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In a network with dozens of switches, how many root bridges would you have?

A) 1 B) 2 C) 5 D) 12

Discuss

Answer & Solution

Answer: Option A

Solution:

You should have only one root bridge per network.

What PPP protocol provides dynamic addressing, authentication, and multilink?

A) NCP B) HDLC C) LCP D) X.25

Discuss

Answer & Solution

Answer: Option C

Solution:

LCP (Link Control Protocol) is a part of the PPP (Point-to-Point Protocol) suite that provides essential services for the establishment, configuration, and maintenance of the link.

LCP is responsible for dynamic addressing, authentication (like PAP or CHAP), and multilink capabilities, which allow multiple physical connections to be bundled together.

Other protocols like NCP are used for configuring network layer protocols, but LCP handles these specific tasks.

Therefore, LCP is the correct answer.

What is a stub network?

A) A network with more than one exit point. B) A network with more than one exit and entry point. C) A network with only one entry and no exit point. D) A network that has only one entry and exit point.

Discuss

Answer & Solution

Answer: Option D

Solution:

Stub networks have only one connection to an internetwork. Only default routes can be set on a stub network or network loops may occur.

If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link?

A) RouterA (config) #bandwidth 64 B) RouterA (config-if) #bandwidth 64000 C) RouterA (config-if) #clock rate 64 D) RouterA (config-if) #clock rate 64000

Discuss

Answer & Solution

Answer: Option D

Solution:

The clock rate command is two words, and the speed of the line is in bps.

Which one of the following is true regarding VLANs?

A) Two VLANs are configured by default on all Cisco switches. B) VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed. C) You should not have more than 10 switches in the same VTP domain. D) VTP is used to send VLAN information to switches in a configured VTP domain.

Discuss

Answer & Solution

Answer: Option D

Solution:

Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunking Protocol (VTP) is used to propagate VLAN information across a trunk link.

What does a VLAN do?

A) Acts as the fastest port to all servers. B) Provides multiple collision domains on one switch port. C) Breaks up broadcast domains in a layer 2 switch internetwork. D) Provides multiple broadcast domains within a single collision domain.

Discuss

Answer & Solution

Answer: Option C

Solution:

VLANs break up broadcast domains at layer 2.

What is the main reason the OSI model was created?

A) To create a layered model larger than the DoD model. B) So application developers can change only one layer's protocols at a time. C) So different networks could communicate. D) So Cisco could use the model.

Discuss

Answer & Solution

Answer: Option C

Solution:

The primary reason the OSI model was created was so that different networks could inter-operate.

How many collision domains are created when you segment a network with a 12-port switch?

A) 1 B) 2 C) 5 D) 12

Discuss

Answer & Solution

Answer: Option D

Solution:

Layer 2 switching creates individual collision domains.

What command will display the line, protocol, DLCI, and LMI information of an interface?

A) sh pvc B) show interface C) show frame-relay pvc D) show run

Discuss

Answer & Solution

Answer: Option B

Solution:

The show interface command shows the line, protocol, DLCI, and LMI information of an interface.

Which protocol does Ping use?

A) TCP B) ARP C) ICMP D) BootP

Discuss

Answer & Solution

Answer: Option C

Solution:

ICMP is the protocol at the Network layer that is used to send echo requests and replies.

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