Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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VLAN Management Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which command verifies that VLAN 10 exists in a switch's VLAN database?

    Answer: show vlan brief

    The 'show vlan brief' command displays all VLANs in the VLAN database along with their names and assigned ports.

  2. What happens to a port's VLAN membership if you delete its assigned VLAN from the VLAN database?

    Answer: The port becomes inactive and stops forwarding traffic

    If a VLAN is deleted from the database while ports are still assigned to it, those ports go inactive because they belong to a non-existent VLAN.

  3. On a Cisco switch, which file stores VLAN configuration by default when VTP is in server or client mode?

    Answer: vlan.dat

    VLAN information is stored in the vlan.dat file in flash memory, separate from the startup-config.

  4. A switch port is configured as 'switchport mode access' on VLAN 20. Which statement is true?

    Answer: The port carries untagged frames belonging to VLAN 20

    Access ports carry untagged Ethernet frames; the switch internally assigns those frames to the configured access VLAN.

  5. Which VLAN range is reserved for Cisco internal use and cannot be created or deleted?

    Answer: VLAN 1002–1005

    VLANs 1002–1005 are reserved by Cisco for legacy Token Ring and FDDI and cannot be modified or deleted.

  6. What is the purpose of the 'switchport nonegotiate' command on a trunk port?

    Answer: Disables DTP so the port does not send DTP frames

    'switchport nonegotiate' prevents the port from sending DTP frames, which is a security best practice on trunk links to non-Cisco devices.

  7. Which VLAN is used to carry native (untagged) traffic on an 802.1Q trunk by default?

    Answer: VLAN 1

    By default, 802.1Q trunks use VLAN 1 as the native VLAN, meaning frames in VLAN 1 are transmitted without a tag.