CCNA DC FAQ: VLAN and Trunking Concepts
Q1. In a LAN, which of the following terms best equates to the term VLAN?
a. Collision domain
b. Broadcast domain
d. Single switch
Q2. Imagine a switch with three configured VLANs. How many IP subnets are required, assuming that all hosts in all VLANs want to use TCP/IP?
e. You can’t tell from the information provided.
Q3. Switch SW1 sends a frame to switch SW2 using 802.1Q trunking. Which of the answers describes how SW1 changes or adds to the Ethernet frame before forwarding the frame to SW2?
a. It inserts a 4-byte header and changes the MAC addresses.
b. It inserts a 4-byte header and does not change the MAC addresses.
c. It encapsulates the original frame behind an entirely new Ethernet header
d. None of the other answers is correct.
Q4. For an 802.1Q trunk between two Ethernet switches, which answer most accurately defines which frames do not include an 802.1Q header?
a. Frames in the native VLAN (only one)
b. Frames in extended VLANs
c. Frames in VLAN 1 (not configurable)
d. Frames in all native VLANs (multiple allowed)
Q5. A Nexus switch has some ports assigned to VLAN 11 and some to VLAN 12. Which of the following devices, acting as described in the answers, can forward data between ports in different VLANs? (Choose two answers.)
a. The Nexus switch when acting as a Layer 2 switch
b. The Nexus switch when acting as a Layer 3 switch
c. An external router
d. An external bridge
Q6. A network engineer wants to use VTP to distribute VLAN configuration information to all switches in a data center so that all switches learn a new VLAN configuration when a VLAN configuration change is made. Which of the following modes cannot be used on any of the switches? (Choose two answers.)
Q7. Which of the following answers list configuration information that VTP distributes? (Choose two answers.)
a. VLAN name
b. VLAN assigned to a switch port
c. Ports on which 802.1Q is enabled
d. VLAN ID