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. A network administrator wants to prevent a rogue switch from becoming a VTP server. Which action should be taken?

    Answer: Set all switches to VTP transparent mode

    VTP transparent mode switches do not participate in VTP synchronization, so a rogue switch in transparent mode cannot update the VLAN database.

  2. Which command assigns ports Fa0/1 through Fa0/5 to VLAN 30 in a single step on a Cisco switch?

    Answer: interface range FastEthernet 0/1-5 then switchport access vlan 30

    The 'interface range' command selects multiple interfaces simultaneously, and 'switchport access vlan 30' assigns them all to VLAN 30.

  3. What does the 802.1Q tag inserted into an Ethernet frame contain?

    Answer: VLAN ID and a 3-bit priority field (CoS)

    The 4-byte 802.1Q tag includes a 12-bit VLAN ID (supporting VLANs 1–4094) and a 3-bit Class of Service (CoS) priority field.

  4. An administrator issues 'switchport trunk allowed vlan 10,20,30' on a trunk interface. What is the effect?

    Answer: Only VLANs 10, 20, and 30 are allowed; all others are pruned

    Using 'switchport trunk allowed vlan' (without 'add') replaces the entire allowed list with only the specified VLANs.

  5. Which VTP mode allows a switch to create and modify VLANs locally but does not propagate changes to other switches?

    Answer: Transparent mode

    VTP transparent mode lets a switch manage its own local VLAN database without advertising changes to or accepting updates from other VTP devices.

  6. What is VLAN pruning in the context of VTP?

    Answer: Blocking flooded traffic for VLANs not needed on a trunk

    VTP pruning restricts broadcast, multicast, and unknown unicast traffic from traversing trunk links to switches that have no ports in that VLAN.

  7. Which command would you use to configure VLAN 50 with the name 'SERVERS' on a Cisco switch?

    Answer: Both A and C are valid methods depending on IOS version

    Modern IOS uses 'vlan 50' followed by 'name SERVERS' in global config mode; older IOS uses the 'vlan database' mode — both are valid.