CCNA 640-802 VLAN / VTP Practice Questions

Brief: CCNA exam requires a good understanding of VLAN / VTP concepts, terminology, and implementation using Cisco switches. We have given a few multiple choice questions to gauge your preparedness (yourself) of the subject before taking the exam!

Q1: Match the trunking protocols with respective media:

1. Inter Switch Link A. FDDI
2. LANE B. Fast Ethernet
3. 802.10 C. ATM

Choose the correct choice.

A. 1-> C, 2->B, 3->A B. 1->B, 2->C, 3->A C. 1->B, 2->A, 3->C D. 1->A, 2->B, 3->C

Ans:B

Explanation:

ISL, 802.1Q are the VLAN trunking protocols associated with Fast Ethernet. The VLAN trunking protocol defined by 802.10 is associated with FDDI. LANE (LAN Emulation) is associated with ATM.

Brief: CCNA exam requires a good understanding of VLAN / VTP concepts, terminology, and implementation using Cisco switches. We have given a few multiple choice questions to gauge your preparedness (yourself) of the subject before taking the exam!

Q1: Match the trunking protocols with respective media:

1. Inter Switch Link A. FDDI
2. LANE B. Fast Ethernet
3. 802.10 C. ATM

Choose the correct choice.

A. 1-> C, 2->B, 3->A B. 1->B, 2->C, 3->A C. 1->B, 2->A, 3->C D. 1->A, 2->B, 3->C

Ans:B

Explanation:

ISL, 802.1Q are the VLAN trunking protocols associated with Fast Ethernet. The VLAN trunking protocol defined by 802.10 is associated with FDDI. LANE (LAN Emulation) is associated with ATM.

Q3: You have configured your network to have 3 VLANs. How many broadcast domains do you have?

A. 1 B. 2 C. 3 D. 4

Ans.: C

Explanation: It is important to know the difference between a collision domain and a broadcast domain. When you use Hubs, all the nodes connected to the hub will be in the same collision domain. However, when you use switches and implement VLANs, each VLAN will be in a separate broadcast domain. The packet forwarding between VLANs is achieved through the use of routing.

Q4: Your network has 100 nodes on a single broadcast domain. You have implemented VLANs and segmented the network to have 2 VLANs of 50 nodes each. The resulting broadcast traffic effectively:

A. Increases two fold B. Remains same C. Decreases by half D. Increases 4 fold

Ans: C

Explanation: By implementing VLANs,

1. The effective broadcast traffic decreases, since VLANs do not forward the broadcast traffic from one VLAN to another.

2. The security can be improved by implementing a router (A layer 3 device) to route the packets among VLANs.

Q5: Which of the following are valid VLAN Trunk Protocols over Fast Ethernet? [Select 2].

A. Inter-Switch Link B. 802.10 C. LANE D. 802.1Q

Ans: A, D

Expl.: Inter-Switch Link and 802.1Q are two VLAN Trunking Protocols used with Fast Ethernet, that Cisco supports. LANE is associated with ATM and 802.10 is associated with FDDI. Also, it is important to note that ISL, 802.1Q, and 802.10 use Frame Tagging to identify the VLANs.