CCNA 2 SRWE – Switching, Routing, and Wireless Essentials (Version 7.00) – Modules 1 – 4 – Switching Concepts, VLANs, and Inter-VLAN Routing Exam Answers 2022 2023 Full 100%

CCNA 2 SRWE v7.0 & v7.02 – Switching, Routing, and Wireless Essentials (Version 7.00) – Modules 1 – 4 – Switching Concepts, VLANs, and Inter-VLAN Routing Exam Answers 2022 2023 Full 100%

Cisco Netacad SRWE Version 7.00 CCNA 2 v7 Modules 1 – 4 – Switching Concepts, VLANs, and Inter-VLAN Routing Exam Answers 2022 2023 – Switching, Routing, and Wireless Essential

1. Which command displays information about the auto-MDIX setting for a specific interface?​

   • show interfaces
   • show controllers
   • show processes
   • show running-config
     

     Answers Explanation & Hints: To examine the auto-MDIX setting for a specific interface, the show controllers ethernet-controller command with the phy keyword should be used.

2. If one end of an Ethernet connection is configured for full duplex and the other end of the connection is configured for half duplex, where would late collisions be observed?

   • on both ends of the connection
   • on the full-duplex end of the connection
   • only on serial interfaces
   • on the half-duplex end of the connection
     

     Answers Explanation & Hints: Full-duplex communications do not produce collisions. However, collisions often occur in half-duplex operations. When a connection has two different duplex configurations, the half-duplex end will experience late collisions. Collisions are found on Ethernet networks. Serial interfaces use technologies other than Ethernet.

3. Which command is used to set the BOOT environment variable that defines where to find the IOS image file on a switch?

   • config-register
   • boot system
   • boot loader
   • confreg
     

     Answers Explanation & Hints: The boot system command is used to set the BOOT environment variable. The config-register and confreg commands are used to set the configuration register. The boot loader command supports commands to format the flash file system, reinstall the operating system software, and recover from a lost or forgotten password.

4. What does a switch use to locate and load the IOS image?

   • BOOT environment variable
   • IOS image file
   • POST
   • startup-config
   • NVRAM
     

     Answers Explanation & Hints: The BOOT environment variable contains the information about where to find the IOS image file.

5. Which protocol adds security to remote connections?

   • FTP
   • HTTP
   • NetBEUI
   • POP
   • SSH
     

     Answers Explanation & Hints: SSH allows a technician to securely connect to a remote network device for monitoring and troubleshooting. HTTP establishes web page requests. FTP manages file transfer. NetBEUI is not routed on the Internet. POP downloads email messages from email servers.

6. What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​

   • The no shutdown command is required to place this interface in an UP state.​
   • It is a logical interface internal to the router.
   • Only one loopback interface can be enabled on a router.​
   • It is assigned to a physical port and can be connected to other devices.
     

     Answers Explanation & Hints: The loopback interface is a logical interface internal to the router and is automatically placed in an UP state, as long as the router is functioning. It is not assigned to a physical port and can therefore never be connected to any other device. Multiple loopback interfaces can be enabled on a router.

7. What is the minimum Ethernet frame size that will not be discarded by the receiver as a runt frame?

   • 64 bytes
   • 512 bytes
   • 1024 bytes
   • 1500 bytes
     

     Answers Explanation & Hints: The minimum Ethernet frame size is 64 bytes. Frames smaller than 64 bytes are considered collision fragments or runt frames and are discarded.

8. After which step of the switch bootup sequence is the boot loader executed?

   • after CPU initialization
   • after IOS localization
   • after flash file system initialization
   • after POST execution
     

     Answers Explanation & Hints: The correct bootup sequence order is as follows: 1.- The switch loads and executes the POST. 2.- The switch loads the boot loader software. 3.- The boot loader performs low-level CPU initialization. 4.- The boot loader initializes the flash memory. 5.- The boot loader locates and loads the default IOS image.

9. Which impact does adding a Layer 2 switch have on a network?

   • an increase in the number of dropped frames
   • an increase in the size of the broadcast domain
   • an increase in the number of network collisions
   • an increase in the size of the collision domain
     

     Answers Explanation & Hints: Adding a Layer 2 switch to a network increases the number of collision domains and increases the size of the broadcast domain. Layer 2 switches do not decrease the amount of broadcast traffic, do not increase the amount of network collisions and do not increase the number of dropped frames.

10. Which characteristic describes cut-through switching?

    • Error-free fragments are forwarded, so switching occurs with lower latency.
    • Frames are forwarded without any error checking.
    • Only outgoing frames are checked for errors.
    • Buffering is used to support different Ethernet speeds.
      

      Answers Explanation & Hints: Cut-through switching reduces latency by forwarding frames as soon as the destination MAC address and the corresponding switch port are read from the MAC address table. This switching method does not perform any error checking and does not use buffers to support different Ethernet speeds. Error checking and buffers are characteristics of store-and-forward switching.

11. What is the significant difference between a hub and a Layer 2 LAN switch?

    • A hub extends a collision domain, and a switch divides collision domains.
    • A hub divides collision domains, and a switch divides broadcast domains.
    • Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.
    • A hub forwards frames, and a switch forwards only packets.
      

      Answers Explanation & Hints: Hubs operate only at the physical layer, forwarding bits as wire signals out all ports, and extend the collision domain of a network. Switches forward frames at the data link layer and each switch port is a separate collision domain which creates more, but smaller, collision domains. Switches do not manage broadcast domains because broadcast frames are always forwarded out all active ports.

12. Which statement is correct about Ethernet switch frame forwarding decisions?

    • Frame forwarding decisions are based on MAC address and port mappings in the CAM table.
    • Cut-through frame forwarding ensures that invalid frames are always dropped.
    • Only frames with a broadcast destination address are forwarded out all active switch ports.
    • Unicast frames are always forwarded regardless of the destination MAC address.
      

      Answers Explanation & Hints: Cut-through frame forwarding reads up to only the first 22 bytes of a frame, which excludes the frame check sequence and thus invalid frames may be forwarded. In addition to broadcast frames, frames with a destination MAC address that is not in the CAM are also flooded out all active ports. Unicast frames are not always forwarded. Received frames with a destination MAC address that is associated with the switch port on which it is received are not forwarded because the destination exists on the network segment connected to that port.

13. How do switch buffers affect network performance?

    • They provide error checking on the data received.
    • They store frames received, thus preventing premature frame discarding when network congestion occurs.
    • They provide extra memory for a particular port if autonegotiation of speed or duplex fails.
    • They hold data temporarily when a collision occurs until normal data transmission resumes.
      

      Answers Explanation & Hints: Switches have large frame buffers that allow data waiting to be transmitted to be stored so the data will not be dropped. This feature is beneficial especially if the incoming traffic is from a faster port than the egress port used for transmitting.

14. Which switch characteristic helps keep traffic local and alleviates network congestion?

    • high port density
    • fast port speed
    • large frame buffers
    • fast internal switching
      

      Answers Explanation & Hints: Switches that have a lot of ports (high port density) reduce the number of switches required and keep some of the traffic locally on the switch, thus removing the need to send it between switches.

15. Which switch component reduces the amount of packet handling time inside the switch?

    • ASIC
    • dual processors
    • large buffer size
    • store-and-forward RAM
      

      Answers Explanation & Hints: Application-specific integrated circuits (ASICs) are used in Cisco switches to speed up switch operations so that the switch can have an increased number of ports without degrading switch performance.

16. Refer to the exhibit. A switch receives a Layer 2 frame that contains a source MAC address of 000b.a023.c501 and a destination MAC address of 0050.0fae.75aa. Place the switch steps in the order they occur. (Not all options are used.)

    

    

    Answers Explanation & Hints: The first step a switch does when processing a frame is to see if the source MAC address is in the MAC address table. If the address is not there, the switch adds it. The switch then examines the destination MAC address and compares it to the MAC address table. If the address is in the table, the switch forwards the frame out the corresponding port. If the address is missing from the table, the switch will forward the frame to all ports except the port through which the frame arrived.

17. What information is added to the switch table from incoming frames?

    • source MAC address and incoming port number
    • destination MAC address and incoming port number
    • source IP address and incoming port number
    • destination IP address and incoming port number
      

      Answers Explanation & Hints: A switch “learns” or builds the MAC address table based on the source MAC address as a frame comes into the switch. A switch forwards the frame onward based on the destination MAC address.

18. Which switching method ensures that the incoming frame is error-free before forwarding?

    • cut-through
    • FCS
    • fragment free
    • store-and-forward
      

      Answers Explanation & Hints: Two methods used by switches to transmit frames are store-and-forward and cut-through switching. The store-and-forward method performs error checking on the frame using the frame check sequence (FCS) value before sending the frame. In contrast, cut-through switching sends the frame as soon as the destination MAC address part of the header has been read and processed.

19. Refer to the exhibit. How many broadcast domains are displayed?

    

    • 1
    • 4
    • 8
    • 16
    • 55
      

      Answers Explanation & Hints: A router defines a broadcast boundary, so every link between two routers is a broadcast domain. In the exhibit, 4 links between routers make 4 broadcast domains. Also, each LAN that is connected to a router is a broadcast domain. The 4 LANs in the exhibit result in 4 more broadcast domains, so there are 8 broadcast domains in all.

20. Under which two occasions should an administrator disable DTP while managing a local area network? (Choose two.)

    • when connecting a Cisco switch to a non-Cisco switch
    • when a neighbor switch uses a DTP mode of dynamic auto
    • when a neighbor switch uses a DTP mode of dynamic desirable
    • on links that should not be trunking
    • on links that should dynamically attempt trunking
      

      Answers Explanation & Hints: Cisco best practice recommends disabling DTP on links where trunking is not intended and when a Cisco switch is connected to a non-Cisco switch. DTP is required for dynamic trunk negotiation.

21. Which two characteristics describe the native VLAN? (Choose two.)

    • Designed to carry traffic that is generated by users, this type of VLAN is also known as the default VLAN.
    • The native VLAN traffic will be untagged across the trunk link.
    • This VLAN is necessary for remote management of a switch.
    • High priority traffic, such as voice traffic, uses the native VLAN.
    • The native VLAN provides a common identifier to both ends of a trunk.
      

      Answers Explanation & Hints: The native VLAN is assigned to 802.1Q trunks to provide a common identifier to both ends of the trunk link. Whatever VLAN native number is assigned to a port, or if the port is the default VLAN of 1, the port does not tag any frame in that VLAN as the traffic travels across the trunk. At the other end of the link, the receiving device that sees no tag knows the specific VLAN number because the receiving device must have the exact native VLAN number. The native VLAN should be an unused VLAN that is distinct from VLAN1, the default VLAN, as well as other VLANs. Data VLANs, also known as user VLANs, are configured to carry user-generated traffic, with the exception of high priority traffic, such as VoIP. Voice VLANs are configured for VoIP traffic. The management VLAN is configured to provide access to the management capabilities of a switch.

22. On a switch that is configured with multiple VLANs, which command will remove only VLAN 100 from the switch?

    • Switch# delete flash:vlan.dat
    • Switch(config-if)# no switchport access vlan 100
    • Switch(config-if)# no switchport trunk allowed vlan 100
    • Switch(config)# no vlan 100
      

      Answers Explanation & Hints: To remove all VLANs from a switch, the delete flash:vlan.dat command would be used. To change the assigned VLAN for an interface, the no switchport access vlan 100 interface configuration command would be used. To remove VLAN 100 as an allowed VLAN on a trunk, the no switchport trunk allowed vlan 100 would be used, but this would not remove the VLAN from the switch. To delete a single VLAN, such as VLAN 100, the no vlan 100 global configuration command would be used.

23. Refer to the exhibit. A network administrator is reviewing port and VLAN assignments on switch S2 and notices that interfaces Gi0/1 and Gi0/2 are not included in the output. Why would the interfaces be missing from the output?

    

    • There is a native VLAN mismatch between the switches.
    • There is no media connected to the interfaces.
    • They are administratively shut down.
    • They are configured as trunk interfaces.
      

      Answers Explanation & Hints: Interfaces that are configured as trunks do not belong to a VLAN and therefore will not show in the output of the show vlan brief commands.

24. A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

    • All devices in all VLANs see the frame.
    • Devices in VLAN 20 and the management VLAN see the frame.
    • Only devices in VLAN 20 see the frame.
    • Only devices that are connected to the local switch see the frame.
      

      Answers Explanation & Hints: VLANs create logical broadcast domains that can span multiple VLAN segments. Ethernet frames that are sent by a device on a specific VLAN can only be seen by other devices in the same VLAN.

25. Refer to the exhibit. All workstations are configured correctly in VLAN 20. Workstations that are connected to switch SW1 are not able to send traffic to workstations on SW2. What could be done to remedy the problem?

    

    • Allow VLAN 20 on the trunk link.
    • Enable DTP on both ends of the trunk.
    • Configure all workstations on SW1 to be part of the default VLAN.
    • Configure all workstations on SW2 to be part of the native VLAN.
      

      Answers Explanation & Hints: Enabling DTP on both switches simply allows negotiation of trunking. The “Negotiation of Trunking” line in the graphic shows that DTP is already enabled. The graphic also shows how the native VLAN is 1, and the default VLAN for any Cisco switch is 1. The graphic shows the PCs are to be in VLAN 20.

26. What happens to switch ports after the VLAN to which they are assigned is deleted?

    • The ports are disabled.
    • The ports are placed in trunk mode.
    • The ports are assigned to VLAN1, the default VLAN.
    • The ports stop communicating with the attached devices.  
      

      Answers Explanation & Hints: The affected ports must be reconfigured for an active VLAN.

27. Match the IEEE 802.1Q standard VLAN tag field with the description. (Not all options are used.)

    

    Answers Explanation & Hints: The IEEE 802.1Q standard header includes a 4-byte VLAN tag: Type – A 2-byte value called the tag protocol ID (TPID) value. User priority – A 3-bit value that supports level or service implementation. Canonical Format Identifier (CFI) – A 1-bit identifier that enables Token Ring frames to be carried across Ethernet links. VLAN ID (VID) – A 12-bit VLAN identification number that supports up to 4096 VLAN IDs.

28. Refer to the exhibit. In what switch mode should port G0/1 be assigned if Cisco best practices are being used?

    

    • access
    • trunk
    • native
    • auto
      

      Answers Explanation & Hints: The router is used to route between the two VLANs, thus switch port G0/1 needs to be configured in trunk mode.

29. Match the DTP mode with its function. (Not all options are used.)

    

    Answers Explanation & Hints: The dynamic auto mode makes the interface become a trunk interface if the neighboring interface is set to trunk or desirable mode. The dynamic desirable mode makes the interface actively attempt to convert the link to a trunk link. The trunk mode puts the interface into permanent trunking mode and negotiates to convert the neighboring link into a trunk link. The nonegotiate mode prevents the interface from generating DTP frames.

30. Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?

    • Port Fa0/11 will be shutdown.
    • An error message would be displayed.
    • Port Fa0/11 will be returned to VLAN 1.
    • VLAN 30 will be deleted.
      

      Answers Explanation & Hints: When the no switchport access vlan command is entered, the port is returned to the default VLAN 1. The port will remain active as a member of VLAN 1, and VLAN 30 will still be intact, even if no other ports are associated with it.

31. Which command displays the encapsulation type, the voice VLAN ID, and the access mode VLAN for the Fa0/1 interface?

    • show vlan brief
    • show interfaces Fa0/1 switchport
    • show mac address-table interface Fa0/1
    • show interfaces trunk
      

      Answers Explanation & Hints: The show interfaces switchport command displays the following information for a given port: Switchport Administrative Mode Operational Mode Administrative Trunking Encapsulation Operational Trunking Encapsulation Negotiation of Trunking Access Mode VLAN Trunking Native Mode VLAN Administrative Native VLAN tagging Voice VLAN

32. Refer to the exhibit. A technician is programming switch SW3 to manage voice and data traffic through port Fa0/20. What, if anything, is wrong with the configuration?

    

    • There is nothing wrong with the configuration.
    • Interface Fa0/20 can only have one VLAN assigned.
    • The mls qos trust cos command should reference VLAN 35.
    • The command used to assign the voice VLAN to the switch port is incorrect.
      

      Answers Explanation & Hints: The voice VLAN should be configured with the switchport voice vlan 150 command. A switch interface can be configured to support one data VLAN and one voice VLAN. The mls qos trust cos associates with the interface. Voice traffic must be trusted so that fields within the voice packet can be used to classify it for QoS.

33. Which four steps are needed to configure a voice VLAN on a switch port? (Choose four).

    • Configure the interface as an IEEE 802.1Q trunk.
    • Assign the voice VLAN to the switch port.
    • Activate spanning-tree PortFast on the interface.
    • Ensure that voice traffic is trusted and tagged with a CoS priority value.
    • Add a voice VLAN.
    • Configure the switch port interface with subinterfaces.
    • Assign a data VLAN to the switch port.
    • Configure the switch port in access mode.
      

      Answers Explanation & Hints: To add an IP phone, the following commands should be added to the switch port: SW3(config-vlan)# vlan 150 SW3(config-vlan)# name voice SW3(config-vlan)# int fa0/20 SW3(config-if)# switchport mode access SW3(config-if)# mls qos trust cos SW3(config-if)# switchport access vlan 150

34. Refer to the exhibit. PC1 is unable to communicate with server 1. The network administrator issues the show interfaces trunk command to begin troubleshooting. What conclusion can be made based on the output of this command?

    

    • Interface G0/2 is not configured as a trunk.
    • VLAN 20 has not been created.
    • The encapsulation on interface G0/1 is incorrect.
    • The DTP mode is incorrectly set to dynamic auto on interface G0/1.
      

      Answers Explanation & Hints: In the show interfaces trunk output, the G0/2 interface of DLS1 is not listed. This indicates the interface has probably not been configured as a trunk link.

35. Refer to the exhibit. What is the cause of the error that is displayed in the configuration of inter-VLAN routing on router CiscoVille?

    

    • The gig0/0 interface does not support inter-VLAN routing.
    • The no shutdown command has not been configured.
    • The IP address on CiscoVille is incorrect.
    • The encapsulation dot1Q 20 command has not been configured.​  
      

      Answers Explanation & Hints: The steps to configure inter-VLAN routing must be completed in a specific order. Before configuring an IP address on a subinterface, the encapsulation dot1q VLAN_id command must be specified first.

36. Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What command will be required on a switch that is connected to the Gi0/0 interface on router CiscoVille to allow inter-VLAN routing?​

    

    • switchport mode access
    • no switchport
    • switchport mode trunk
    • switchport mode dynamic desirable
      

      Answers Explanation & Hints: When they are configured for inter-VLAN routing, routers do not support the dynamic trunking protocol that is used by switches. For router-on-a-stick configurations to function, a connected switch must use the command switchport mode trunk .

37. A high school uses VLAN15 for the laboratory network and VLAN30 for the faculty network. What is required to enable communication between these two VLANs while using the router-on-a-stick approach?

    • A multilayer switch is needed.
    • A router with at least two LAN interfaces is needed.
    • Two groups of switches are needed, each with ports that are configured for one VLAN.
    • A switch with a port that is configured as a trunk is needed when connecting to the router.
      

      Answers Explanation & Hints: With router-on-a-stick, inter-VLAN routing is performed by a router with a single router interface that is connected to a switch port configured with trunk mode. Multiple subinterfaces, each configured for a VLAN, can be configured under the single physical router interface. Switches can have ports that are assigned to different VLANs, but communication between those VLANs requires routing function from the router. A multilayer switch is not used in a router-on-a-stick approach to inter-VLAN routing.

38. When routing a large number of VLANs, what are two disadvantages of using the router-on-a-stick inter-VLAN routing method rather than the multilayer switch inter-VLAN routing method? (Choose two.)

    • Multiple SVIs are needed.
    • A dedicated router is required.
    • Router-on-a-stick requires subinterfaces to be configured on the same subnets.
    • Router-on-a-stick requires multiple physical interfaces on a router.
    • Multiple subinterfaces may impact the traffic flow speed.
      

      Answers Explanation & Hints: With the router-on-a-stick inter-VLAN routing method, a dedicated router is required. It only needs one physical interface on the router to route traffic among multiple VLANs, by using subinterfaces on one physical interface. On the other hand, since traffic of all VLANs will have to go through the same physical interfaces, the throughput will be impacted. Also, a multilayer switch can use multiple SVIs to perform inter-VLAN routing.

39. Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PCs on different VLANs cannot communicate. Based on the output, what are two configuration errors on switch interface Gi1/1? (Choose two.)

    

    • Gi1/1 is in the default VLAN.
    • Voice VLAN is not assigned to Gi1/1.
    • Gi1/1 is configured as trunk mode.
    • Negotiation of trunking is turned on on Gi1/1.
    • The trunking encapsulation protocol is configured wrong.
      

      Answers Explanation & Hints: With legacy inter-VLAN routing methods, the switch ports that connect to the router should be configured as access mode and be assigned appropriate VLANs. In this scenario, the Gi1/1 interface should be in access mode with VLAN 10 assigned. The other options are default settings on the switch and have no effect on legacy inter-VLAN routing.

40. Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?

    

    • Gi0/0 is not configured as a trunk port.
    • The command interface GigabitEthernet0/0.5 was entered incorrectly.
    • There is no IP address configured on the interface Gi0/0.
    • The no shutdown command is not entered on subinterfaces.
    • The encapsulation dot1Q 5 command contains the wrong VLAN. 
      

      Answers Explanation & Hints: In router-on-a-stick, the subinterface configuration should match the VLAN number in the encapsulation command, in this case, the command encapsulation dot1Q 10 should be used for VLAN 10. Since subinterfaces are used, there is no need to configure IP on the physical interface Gi0/0. The trunk mode is configured on the switch port that connects to the router. The subinterfaces are turned on when they are added.

41. Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What type of port will be required on a switch that is connected to Gi0/0 on router CiscoVille to allow inter-VLAN routing?

    

    • routed port
    • access port
    • trunk port
    • SVI
      

      Answers Explanation & Hints: To allow a router-on-a-stick configuration to function, a switch must be connected to the router via a trunk port to carry the VLANs to be routed. An SVI would be used on a multilayer switch where the switch is performing inter-VLAN routing.

42. Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router configuration, what is causing the problem?

    

    • Interface Fa0/0 is missing IP address configuration information.
    • IP addresses on the subinterfaces are incorrectly matched to the VLANs.
    • Each subinterface of Fa0/0 needs separate no shutdown commands.
    • Routers do not support 802.1Q encapsulation on subinterfaces.
      

      Answers Explanation & Hints: Since Host 1 (in VLAN 20) has the IP 172.18.1.10/27, the subinterface Fa0/0.1 should be configured with an IP address in the network 172.168.1.0/27. Similarly, Fa0/0.2 should be with an IP address in the network 172.168.1.64/27 and Fa0/0.3 should be with an IP address in the network 172.168.1.96/27.

43. Refer to the exhibit. A router-on-a-stick configuration was implemented for VLANs 15, 30, and 45, according to the show running-config command output. PCs on VLAN 45 that are using the 172.16.45.0 /24 network are having trouble connecting to PCs on VLAN 30 in the 172.16.30.0 /24 network. Which error is most likely causing this problem?​

    

    • The wrong VLAN has been configured on GigabitEthernet 0/0.45.
    • The command no shutdown is missing on GigabitEthernet 0/0.30.
    • The GigabitEthernet 0/0 interface is missing an IP address.
    • There is an incorrect IP address configured on GigabitEthernet 0/0.30.
      

      Answers Explanation & Hints: he subinterface GigabitEthernet 0/0.30 has an IP address that does not correspond to the VLAN addressing scheme. The physical interface GigabitEthernet 0/0 does not need an IP address for the subinterfaces to function. Subinterfaces do not require the no shutdown command.

44. What is a characteristic of a routed port on a Layer 3 switch?

    • It supports trunking.
    • It is not assigned to a VLAN.
    • It is commonly used as a WAN link.
    • It cannot have an IP address assigned to it.
      

      Answers Explanation & Hints: A routed port on a Layer 3 switch is commonly used for connecting between distribution and core layer switches or between a Layer 3 switch and a router. This port does not get VLAN or trunking commands assigned to it. Instead, the port is programmed with an IP address. This is commonly used when static routing is configured on the switch or when a routing protocol is being run between the Layer 3 switch and the router or another Layer 3 switch.

45. Refer to the exhibit. A network administrator needs to configure router-on-a-stick for the networks that are shown. How many subinterfaces will have to be created on the router if each VLAN that is shown is to be routed and each VLAN has its own subinterface?

    

    • 1
    • 2
    • 3
    • 4
    • 5
      

      Answers Explanation & Hints: Based on the IP addresses and masks given, the PC, printer, IP phone, and switch management VLAN are all on different VLANs. This situation will require four subinterfaces on the router.

46. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# mdix auto command?

    • It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.
    • It applies an IPv4 address to the virtual interface.
    • It applies an IPv6 address to the virtual interface.
    • It permits an IPv6 address to be configured on a switch physical interface.
    • It updates the MAC address table for the associated port.

    • Answers Explanation & Hints: The “mdix auto” command is used to configure the auto-MDIX feature on a switch port. This feature automatically detects the type of cable (straight-through or crossover) that is connected to the port and configures the connection appropriately. In other words, issuing the “mdix auto” command allows the port to adjust automatically to either a straight-through or a crossover cable, depending on what type of cable is connected. Therefore, the correct answer is: “It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.”

47. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ip address 172.18.33.88 255.255.255.0 command?

    • It applies an IPv4 address to the virtual interface.
    • It applies an IPv6 address to the virtual interface.
    • It activates a virtual or physical switch interface.
    • It permits an IPv6 address to be configured on a switch physical interface.
    • It updates the MAC address table for the associated port.

    • Answers Explanation & Hints: The “ip address” command is used to assign an IP address to a switch interface. In this case, the command “BranchSw(config-if)# ip address 172.18.33.88 255.255.255.0” assigns the IPv4 address 172.18.33.88 with a subnet mask of 255.255.255.0 to the switch interface configured in interface configuration mode (config-if). Therefore, the correct answer is: “It applies an IPv4 address to the virtual interface.”

48. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw# configure terminal command?

    • It enters the global configuration mode.
    • It enters configuration mode for a switch virtual interface.
    • It applies an IPv4 address to the virtual interface.
    • It updates the MAC address table for the associated port.
    • It permits an IPv6 address to be configured on a switch physical interface.

    • Answers Explanation & Hints: The “configure terminal” command is used to enter global configuration mode on a Cisco switch. This mode allows the technician to configure various aspects of the switch, including interfaces, VLANs, security settings, and more. In global configuration mode, the technician can enter specific configuration modes for individual interfaces, such as “interface configuration mode” to configure a specific switch interface or “VLAN configuration mode” to configure a VLAN. Therefore, the correct answer is: “It enters the global configuration mode.”

49. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw# configure terminal command?

    • It enters the global configuration mode.
    • It saves the running configuration to NVRAM.
    • It disables a virtual or physical switch interface.
    • It updates the MAC address table for the associated port.
    • It saves the startup configuration to the running configuration.

    • Answers Explanation & Hints: The “configure terminal” command is used to enter global configuration mode on a Cisco switch. This mode allows the technician to configure various aspects of the switch, including interfaces, VLANs, security settings, and more. Entering global configuration mode does not save the running configuration to NVRAM or disable a virtual or physical switch interface. It also does not update the MAC address table for the associated port. Additionally, the “configure terminal” command does not automatically save the running configuration to the startup configuration. To do that, the technician would need to issue the “copy running-config startup-config” command. Therefore, the correct answer is: “It enters the global configuration mode.”

50. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# shutdown command?

    • It disables a virtual or physical switch interface.
    • It saves the running configuration to NVRAM.
    • It activates a virtual or physical switch interface.
    • It updates the MAC address table for the associated port.
    • It saves the startup configuration to the running configuration.

    • Answers Explanation & Hints: The “shutdown” command is used to disable a virtual or physical switch interface on a Cisco switch. When a switch interface is shut down, it stops forwarding traffic and becomes administratively down. Therefore, the correct answer is: “It disables a virtual or physical switch interface.”

51. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# shutdown command?

    • It disables a virtual or physical switch interface.
    • It applies an IPv6 address to the virtual interface.
    • It applies an IPv4 address to the virtual interface.
    • It permits an IPv6 address to be configured on a switch physical interface.
    • It updates the MAC address table for the associated port.

    • Answers Explanation & Hints: The “shutdown” command is used to disable a virtual or physical switch interface on a Cisco switch. When a switch interface is shut down, it stops forwarding traffic and becomes administratively down. Therefore, the correct answer is: “It disables a virtual or physical switch interface.” The “shutdown” command does not apply an IPv6 or IPv4 address to the virtual interface, permit an IPv6 address to be configured on a switch physical interface, or update the MAC address table for the associated port.

52. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ipv6 address 2001:db8:a2b4:88::1/64 command?

    • It applies an IPv6 address to the virtual interface.
    • It activates a virtual or physical switch interface.
    • It applies an IPv4 address to the virtual interface.
    • It permits an IPv6 address to be configured on a switch physical interface.
    • It updates the MAC address table for the associated port.

    • Answers Explanation & Hints: The “ipv6 address” command is used to assign an IPv6 address to a switch interface. In this case, the command “BranchSw(config-if)# ipv6 address 2001:db8:a2b4:88::1/64” assigns the IPv6 address 2001:db8:a2b4:88::1 with a prefix length of 64 to the switch interface configured in interface configuration mode (config-if). Therefore, the correct answer is: “It applies an IPv6 address to the virtual interface.” The “ipv6 address” command does not apply an IPv4 address to the virtual interface, activate a virtual or physical switch interface, permit an IPv6 address to be configured on a switch physical interface, or update the MAC address table for the associated port.

53. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# exit command?

    • It returns to global configuration mode.
    • It returns to privileged mode.
    • It configures the default gateway for the switch.
    • It enters user mode.
    • It saves the startup configuration to the running configuration.

    • Answers Explanation & Hints: The “exit” command is used to exit out of interface configuration mode on a Cisco switch and return to global configuration mode. Interface configuration mode is used to configure settings for a specific interface, such as VLAN membership, IP addressing, and port security. Therefore, the correct answer is: “It returns to global configuration mode.” The “exit” command does not return to privileged mode, configure the default gateway for the switch, enter user mode, or save the startup configuration to the running configuration.

54. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw> enable command?

    • It enters privileged mode.
    • It enters the global configuration mode.
    • It enters configuration mode for a switch virtual interface.
    • It updates the MAC address table for the associated port.
    • It permits an IPv6 address to be configured on a switch physical interface.

    • Answers Explanation & Hints: The “enable” command is used to enter privileged mode on a Cisco switch. Privileged mode is a command level that provides access to all configuration commands, including those used for managing the switch and troubleshooting issues. Therefore, the correct answer is: “It enters privileged mode.” The “enable” command does not enter the global configuration mode, configuration mode for a switch virtual interface, update the MAC address table for the associated port, or permit an IPv6 address to be configured on a switch physical interface.

55. A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# duplex full command?

    • It allows data to flow in both directions at the same time on the interface.
    • It allows data to flow in only one direction at a time on the interface
    • It automatically adjusts the port to allow device connections to use either a straight-through or a crossover cable.
    • It configures the switch as the default gateway.
    • It encrypts user-mode passwords when users connect remotely.

    • Answers Explanation & Hints: The “duplex full” command is used to set the duplex mode of an interface on a Cisco switch to full-duplex. Full-duplex mode allows data to flow in both directions simultaneously on the interface, effectively doubling the potential bandwidth. Therefore, the correct answer is: “It allows data to flow in both directions at the same time on the interface.” The “duplex full” command does not allow data to flow in only one direction at a time on the interface, automatically adjust the port to allow device connections to use either a straight-through or a crossover cable, configure the switch as the default gateway, or encrypt user-mode passwords when users connect remotely.

56. What type of VLAN should not carry voice and network management traffic?

    • data VLAN
    • voice VLAN
    • management VLAN
    • security VLAN

    • Answers Explanation & Hints: The management VLAN should not carry voice and network management traffic. A management VLAN is used to manage network devices, such as switches and routers, and to access their management interfaces. This VLAN is typically isolated from user traffic and other VLANs to ensure the security and reliability of the network. Voice traffic is carried on a separate voice VLAN to ensure quality of service (QoS) for voice communications. This allows for proper prioritization and bandwidth allocation to ensure that voice traffic is not impacted by other types of traffic on the network. Similarly, network management traffic should be carried on a separate VLAN to ensure that it is not impacted by other types of traffic and to provide secure and reliable access to network devices. Data VLANs carry user data and are typically separated from other VLANs to provide security and to help manage network traffic. Security VLANs are used to provide additional security measures and to isolate sensitive data or devices from other parts of the network.

57. What type of VLAN should not carry voice and network management traffic?

    • data VLAN
    • trunk VLAN
    • security VLAN
    • voice VLAN

    • Answers Explanation & Hints: The management VLAN should not carry voice and network management traffic. A management VLAN is used to manage network devices, such as switches and routers, and to access their management interfaces. This VLAN is typically isolated from user traffic and other VLANs to ensure the security and reliability of the network. Voice traffic is carried on a separate voice VLAN to ensure quality of service (QoS) for voice communications. This allows for proper prioritization and bandwidth allocation to ensure that voice traffic is not impacted by other types of traffic on the network. Similarly, network management traffic should be carried on a separate VLAN to ensure that it is not impacted by other types of traffic and to provide secure and reliable access to network devices. Data VLANs carry user data and are typically separated from other VLANs to provide security and to help manage network traffic. Security VLANs are used to provide additional security measures and to isolate sensitive data or devices from other parts of the network.

58. What type of VLAN is designed to reserve bandwidth to ensure IP Phone quality?

    • voice VLAN
    • trunk VLAN
    • security VLAN
    • management VLAN

    • Answers Explanation & Hints: A voice VLAN is a type of VLAN that is specifically designed to carry voice traffic for Voice over IP (VoIP) communication. It is configured on a switch port that is connected to an IP phone, which in turn is connected to a PC. When a device is connected to a voice VLAN-enabled switch port, the port automatically assigns the device to the voice VLAN, which is typically given a higher priority over other data traffic. This ensures that voice traffic receives sufficient bandwidth and quality of service (QoS) to minimize latency, jitter, and packet loss. By reserving bandwidth for voice traffic, the voice VLAN helps ensure that phone calls remain clear and uninterrupted, even during periods of high network traffic. This is particularly important for organizations that rely heavily on phone communication, such as call centers or customer support departments. The voice VLAN also simplifies network management by allowing voice and data traffic to be separated onto different VLANs, making it easier to prioritize and manage network traffic.

59. What type of VLAN is initially the management VLAN?

    • default VLAN
    • native VLAN
    • data VLAN
    • management VLAN

    • Answers Explanation & Hints: The default VLAN is initially the management VLAN on Cisco switches. When a switch is powered on, all ports are members of the default VLAN (VLAN 1) by default, and it is used for management and administrative traffic. However, it is recommended to change the VLAN ID for security reasons and to avoid potential network issues that can arise from using the default VLAN.

60. What type of VLAN is designed to have a delay of less than 150 ms across the network?

    • voice VLAN
    • desirable VLAN
    • trunk VLAN
    • security VLAN

    • Answers Explanation & Hints: There is no specific VLAN designed to have a delay of less than 150 ms across the network. The choice of VLAN does not directly impact network latency or delay. However, a well-designed network with appropriate VLAN configuration can help minimize network latency and ensure efficient data flow. VLANs are typically used to segment network traffic and improve network performance, security, and manageability.

61. What type of VLAN is used to separate the network into groups of users or devices?

    • data VLAN
    • management VLAN
    • voice VLAN
    • native VLAN

    • Answers Explanation & Hints: Virtual Local Area Networks (VLANs) are a way to logically separate a physical network into multiple logical networks. Each VLAN is a broadcast domain, which means that a broadcast sent by a device in one VLAN will not be forwarded to devices in another VLAN. VLANs are used to group devices with similar network requirements, such as departmental or functional groups, and to enhance network security by restricting communication between devices in different VLANs. Data VLANs are the most common type of VLAN and are used to separate user devices, such as computers, printers, and servers, from each other. By default, all ports on a switch are assigned to the data VLAN, which carries normal user traffic. Voice VLANs are designed to provide a high-quality voice over IP (VoIP) experience by reserving bandwidth and applying quality of service (QoS) policies to prioritize voice traffic. Voice VLANs are used to separate VoIP traffic from normal data traffic and ensure that voice packets receive priority over other types of traffic. Management VLANs are used to separate network management traffic, such as Simple Network Management Protocol (SNMP), Telnet, and SSH, from normal data traffic. This helps to improve security by restricting access to network management functions and provides better performance for network management tasks. Native VLANs are used to carry untagged traffic, such as traffic from legacy devices or devices that do not support VLAN tagging. By default, the native VLAN on a Cisco switch is VLAN 1, but it is recommended to change this to improve security. Overall, VLANs provide a flexible and powerful way to manage network traffic and improve network performance and security.

62. What type of VLAN is configured specifically for network traffic such as SSH, Telnet, HTTPS, HHTP, and SNMP?

    • management VLAN
    • security VLAN
    • trunk VLAN
    • voice VLAN

    • Answers Explanation & Hints: The VLAN configured specifically for network traffic such as SSH, Telnet, HTTPS, HTTP, and SNMP is the Management VLAN. This VLAN is used for managing network devices and accessing them remotely. It is a best practice to separate management traffic from other user traffic for security and performance reasons. By isolating management traffic, administrators can limit access to sensitive network devices and monitor network activity more easily.

63. What type of VLAN is configured specifically for network traffic such as SSH, Telnet, HTTPS, HHTP, and SNMP?

    • management VLAN
    • voice VLAN
    • security VLAN
    • native VLAN

    • Answers Explanation & Hints: The VLAN configured specifically for network traffic such as SSH, Telnet, HTTPS, HTTP, and SNMP is the Management VLAN. This VLAN is used for managing network devices and accessing them remotely. It is a best practice to separate management traffic from other user traffic for security and performance reasons. By isolating management traffic, administrators can limit access to sensitive network devices and monitor network activity more easily.

64. What type of VLAN supports untagged traffic?

    • native VLAN
    • voice VLAN
    • security VLAN
    • management VLAN

    • Answers Explanation & Hints: The type of VLAN that supports untagged traffic is the native VLAN. The native VLAN is a VLAN that carries untagged traffic, meaning it does not have an 802.1Q tag. By default, the native VLAN on a Cisco switch is VLAN 1, but it can be changed to any other VLAN. The native VLAN is used for communication between switches or between a switch and an end device that does not support VLAN tagging.

65. What type of VLAN supports untagged traffic?

    • native VLAN
    • desirable VLAN
    • trunk VLAN
    • security VLAN

    • Answers Explanation & Hints: A native VLAN is a default VLAN that is assigned to an 802.1Q trunk port without being tagged with an additional VLAN tag. This means that any untagged traffic arriving on the trunk port is assumed to belong to the native VLAN. By default, the native VLAN is VLAN 1, but it can be changed to any other VLAN ID. It is important to ensure that the same native VLAN is configured on both ends of a trunk link to avoid any VLAN mismatches or security issues. The native VLAN can be used for untagged traffic, such as traffic from non-802.1Q devices, including legacy devices or devices that do not support VLAN tagging. It can also be used for management traffic, as well as for carrying traffic between switches in a VTP domain. However, it is important to note that the native VLAN can also be a security risk if not properly configured. An attacker can potentially gain access to the native VLAN and then use that access to attack other VLANs in the network. Therefore, best practices recommend changing the native VLAN to a non-default VLAN ID and implementing appropriate security measures to protect the network.

66. Refer to the exhibit. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up?

    

    • IPv6 enable
    • clockrate 128000
    • end
    • no shutdown
      

      Answers Explanation & Hints: By default all router interfaces are shut down. To bring the interfaces up, an administrator must issue the no shutdown command in interface mode.

67. Refer to the exhibit. The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement?

    

    • Use SSH version 1.
    • Reconfigure the RSA key.
    • Configure SSH on a different line.
    • Modify the transport input command.

    • Answers Explanation & Hints: The network administrator should modify the transport input command to allow SSH connections and prohibit Telnet connections. Currently, the transport input command is set to “transport input telnet”, which allows Telnet connections. To allow SSH connections and prohibit Telnet connections, the command should be changed to “transport input ssh”. The modified configuration for Switch1 should be as follows: Switch1(config)# line vty 0 15 Switch1(config-line)# transport input ssh This configuration change will allow only SSH connections to the VTY lines on Switch1.

68. Which solution would help a college alleviate network congestion due to collisions?

    • a firewall that connects to two Internet providers
    • a high port density switch
    • a router with two Ethernet ports
    • a router with three Ethernet ports
      

      Answers Explanation & Hints: Switches provide microsegmentation so that one device does not compete for the same Ethernet network bandwidth with another network device, thus practically eliminating collisions. A high port density switch provides very fast connectivity for many devices.

69. Which two statements are correct with respect to SVI inter-VLAN routing? (Choose two.)

    • Switching packets is faster with SVI.
    • There is no need for a connection to a router.
    • Virtual interfaces support subinterfaces.
    • SVIs can be bundled into EtherChannels.
    • SVIs eliminate the need for a default gateway in the hosts.
      

      Answers Explanation & Hints: The SVI inter-VLAN routing method is faster than other methods. The switch can route the existing VLANs without the need for a router.

70. Refer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic?

    

    • It identifies the subinterface.
    • It identifies the VLAN number.
    • It identifies the native VLAN number.
    • It identifies the type of encapsulation that is used.
    • It identifies the number of hosts that are allowed on the interface.
      

      Answers Explanation & Hints: The completed command would be encapsulation dot1q 7 . The encapsulation dot1q part of the command enables trunking and identifies the type of trunking to use. The 7 identifies the VLAN number.

71. Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?

    • data
    • default
    • native
    • management
      

      Answers Explanation & Hints: A native VLAN is the VLAN that does not receive a VLAN tag in the IEEE 802.1Q frame header. Cisco best practices recommend the use of an unused VLAN (not a data VLAN, the default VLAN of VLAN 1, or the management VLAN) as the native VLAN whenever possible.

72. A network administrator issues the show vlan brief command while troubleshooting a user support ticket. What output will be displayed?

    • the VLAN assignment and membership for device MAC addresses
    • the VLAN assignment and membership for all switch ports
    • the VLAN assignment and trunking encapsulation
    • the VLAN assignment and native VLAN
      

      Answers Explanation & Hints: The show vlan brief command will provide information displaying the VLAN assignment and membership for all switch ports on a switch.

73. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

    

    

    Which message is displayed when 10.10.10.1 is entered into the PC1 Web Browser address bar?

    • Local Server
    • Test Server
    • File Server
    • Cisco Server
      

      Answers Explanation & Hints: Examining the configuration of switch SW1 shows that interface Gi0/1 is not configured as a trunk. Issuing the interface configuration command switchport mode trunk on this interface will enable communications between PC1 and Server1.