CCNA – Vlan Questions

10 Questions
CCNA  vlan questions

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Questions and Answers
  • 1. 
    What are three benefits of implementing VLANs? (Choose three)
    • A. 

      A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure

    • B. 

      Broadcast storms can be mitigated by decreasing the number of broadcast domains,thus increasing their size.

    • C. 

      A higher level of network security can be reached by separating sensitive data traffic from other network traffic.

    • D. 

      Port-based vlans increase switch-port use efficient,thanks to 802.1Q trunks

    • E. 

      A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure.

    • F. 

      Broadcast storms can be mitigated by increasing the number of broadcast domains,thus reducing their size.

    • G. 

      VLANs make it easier for IT staff to configure new logical groups,because the vlans all belong to the same broadcast domain.

  • 2. 
    • A. 

      The command is accepted and the respective VLAN is added to vlan.dat.

    • B. 

      The command is rejected.

    • C. 

      The command is accepted and you must configure the VLAN manually.

    • D. 

      The port turns amber.

  • 3. 
    What are three advantages of VLANs? (Choose three)
    • A. 

      VLANs establish broadcast domains in switched networks.

    • B. 

      VLANs utilize packet filtering to enhance network security.

    • C. 

      VLANs provide a method of conserving IP addresses in large networks.

    • D. 

      VLANs provide a low-latency internetworking alternative to routed networks.

    • E. 

      VLANs allow access to network services based on department, not physical location.

    • F. 

      VLANs can greatly simplify adding, moving, or changing hosts on the network.

  • 4. 
    On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?
    • A. 

      A router with subinterfaces configured on the physical interface that is connected to the switch

    • B. 

      A router with an IP address on the physical interface connected to the switch

    • C. 

      A switch with an access link that is configured between the switches

    • D. 

      A switch with a trunk link that is configured between the switches

  • 5. 
    • A. 

      802.1Q giants frames could saturate the link.

    • B. 

      VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.

    • C. 

      A native VLAN mismatch error message will appear.

    • D. 

      VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames.

  • 6. 
    Which of the following are benefits of VLANs? (Choose three)
    • A. 

      They increase the size of collision domains.

    • B. 

      They allow logical grouping of users by function.

    • C. 

      They can enhance network security.

    • D. 

      They increase the size of broadcast domains while decreasing the number of collision domains.

    • E. 

      They increase the number of broadcast domains while decreasing the size of the broadcast domains.

    • F. 

      They simplify switch administration.

  • 7. 
    • A. 

      Trunk mode mismatches

    • B. 

      Vlans that do not correspond to a unique IP subnet

    • C. 

      Native vlan mismatches

    • D. 

      Allowing only vlan 2 on the destination.

  • 8. 
    • A. 

      When a packet is received from an 802.1Q trunk, the vlan id can be determined from the source MAC address table.

    • B. 

      Unknown unicast frames are retransmitted only to the ports that belong to the same vlan.

    • C. 

      Ports between switches should be configured in access mode so that vlans can span across the ports.

    • D. 

      Broadcast and multicast frames are retransmitted to ports that are configured on different vlan.

  • 9. 
    Which two benefits are provided by creating VLANs? (Choose two)
    • A. 

      Added security

    • B. 

      Dedicated bandwidth

    • C. 

      Provides segmentation

    • D. 

      Allows switches to route traffic between subinterfaces

    • E. 

      Contains collisions

  • 10. 
    • A. 

      2 through 1001

    • B. 

      1 through 1001

    • C. 

      1 through 1002

    • D. 

      2 through 1005