Virtual LANs problems
- 1. You want to improve network performance by increasing the bandwidth available to hosts and limit the size of the broadcast domains. Which of the following options will achieve this goal?
Options- A. Managed hubs
- B. Bridges
- C. Switches
- D. Switches configured with VLANs Discuss
Correct Answer: Switches configured with VLANs
Explanation:
By creating and implementing VLANs in your switched network, you can break up broadcast domains at layer 2. For hosts on different VLANs to communicate, you must have a router or layer 3 switch.
- 2. What VTP mode allows you to change VLAN information on the switch?
Options- A. Client
- B. STP
- C. Server
- D. Transparent Discuss
Correct Answer: Server
Explanation:
Only in server mode can you change VTP information on a switch.
- 3. When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?
Options- A. By default, all VLANs are allowed on the trunk.
- B. No VLAN's are allowed, you must configure each VLAN by hand.
- C. Only configured VLAN's are allowed on the link.
- D. Only extended VLAN's are allowed by default. Discuss
Correct Answer: By default, all VLANs are allowed on the trunk.
Explanation:
By default, all VLANs are allowed on the trunk link and you must remove by hand each VLAN that you don't want traversing the trunked link.
- 4. Which of the following modes are valid when a switch port is used as a VLAN trunk?
- Blocking
- Dynamic auto
- Dynamic desirable
- Nonegotiate
- Access
- Learning
Options- A. 1, 2 and 6
- B. 2, 3 and 4
- C. 4, 5 and 6
- D. 2, 4, and 5 Discuss
Correct Answer: 2, 3 and 4
Explanation:
The valid modes of a VLAN trunk on a switch are dynamic auto, dynamic desirable, trunk (on), and nonegotiate.
- 5. Which protocol reduces administrative overhead in a switched network by allowing the configuration of a new VLAN to be distributed to all the switches in a domain?
Options- A. STP
- B. VTP
- C. DHCP
- D. ISL Discuss
Correct Answer: VTP
Explanation:
Virtual Trunk Protocol (VTP) is used to pass a VLAN database to any or all switches in the switched network. The three VTP modes are server, client, and transparent.
- 6. Which of the following protocols are used to configure trunking on a switch?
- VLAN Trunk Protocol
- VLAN
- 802.1Q
- ISL
Options- A. 1 only
- B. 3 only
- C. 3 and 4
- D. 1, 3 and 4 Discuss
Correct Answer: 3 and 4
Explanation:
Cisco has a proprietary trunking protocol called ISL. The IEEE version is 802.1Q.
- 7. Which switching technology reduces the size of a broadcast domain?
Options- A. ISL
- B. 802.1Q
- C. VLANs
- D. STP Discuss
Correct Answer: VLANs
Explanation:
Virtual LANs break up broadcast domains in layer 2 switched internetworks.
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