Networking Basics - Networking Basics (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.

Answer: Option C

Explanation:

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

10.

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.

Answer: Option C

Explanation:

VLANs break up broadcast domains at layer 2.

11.

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.

Answer: Option D

Explanation:

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.

12.

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

Answer: Option D

Explanation:

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

13.

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.

Answer: Option D

Explanation:

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

14.

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

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

Answer: Option C

Explanation:

Link Control Protocol in the PPP stack provides dynamic addressing, authentication, and multilink.

15.

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

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

Answer: Option A

Explanation:

You should have only one root bridge per network.

16.

Which class of IP address has the most host addresses available by default?

A.	A
B.	B
C.	C
D.	A and B

Answer: Option A

Explanation:

Class A addressing provides 24 bits for host addressing.

Networking Basics - Networking Basics (2)

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