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QUESTION NO:4

Which device would you select to partition a network into VLANs?

A. repeater

B. bridge

C. switch

D. router

E. hub

Answer: C

QUESTION NO:13

What are two features of a bridge? (Choose two.)

A. Reliable transmission

B. Operate at OSI Layer 2

C. Operate at OSI Layer 3

D. Create multiple broadcast domains

E. Create multiple collision domains

F. Flood input packets to all ports

G. Drop IP packets with invalid destination ports

Answer: B,E

Explanation:

“- a bridge is a two interfaces device that creates 2 collision domains, since it forwards the traffic it receivesfrom one interface only to the interface where the destination layer 2 device (based on his mac address) isconnected to. A bridge is considered as an “intelligent hub” since it reads the destination mac address in orderto forward the traffic only to the interface where it is connected” https://learningnetwork.cisco.com/thread/1734

QUESTION NO:9

Which two layers of the OSI model are combined in the Internet protocol suite application layer? (Choose two.)

A. 2

B. 3

C. 4

D. 5

E. 6

F. 7

Answer: D,E Explanation:

http://en.wikipedia.org/wiki/Internet_protocol_suite

QUESTION NO:7

Which layer of the OSI model is associated with the reliable transmission of datagrams?

A. Datagram

B. Routing

C. Network

D. Data link

E. Transport

F. Transmission

G. Session

Answer: E

Explanation:

http://en.wikipedia.org/wiki/Transport_layer

QUESTION NO:18

Which four statements indicate unique properties of VLAN 1 on Cisco Nexus switches? (Choose four.)

A. VLAN 1 is used to flood multicast traffic.

B. VLAN 1 cannot be deleted.

C. VLAN 1 is used for Cisco Discovery Protocol.

D. VLAN 1 is used for VTP advertisements.

E. VLAN 1 defines a collision domain.

F. VLAN 1 defines a broadcast domain.

Answer: B,C,D,F

Explanation:

http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/layer2/configuration/guide/Cisco_Nexus_7000_Series_NX-S_Layer_2_Switching_Configuration_Guide_Release_5.x_chapter4.html

QUESTION NO:3

Which two network topologies are the most popular in switching? (Choose two.)

A. Bus

B. Token passing bus

C. Star

D. Extended star

E. Ring

Answer: C,D

Explanation:

http://en.wikipedia.org/wiki/Network_topology

QUESTION NO:10

Which two layers of the OSI model are combined in the Internet protocol suite network access layer? (Choose two.)

A. 1

B. 2

C. 3

D. 4

E. 5

F. 6

G. 7

Answer: A,B

Explanation:

http://en.wikipedia.org/wiki/Internet_protocol_suite

QUESTION NO:8

Which three terms are used to describe data at Layers 1, 2, and 4 of the OSI model? (Choose three.)

A. PDUs

B. Bits

C. Sequences

D. Segments

E. Packets

F. Frames

Answer: B,D,F

Explanation:

Bits -1 layer Frames – 2 layer Segments – 4 layer http://en.wikipedia.org/wiki/OSI_model

QUESTION NO:15

What action does a switch take if the destination MAC address is unknown?

A. Discard frame

B. Send ICMP unreachable message to source

C. Flood packet on all ports

D. Compare destination IP address against an ACL to determine if it is permitted

E. Send gratuitous ARP on all ports and wait for reply before forwarding

Answer: C

Explanation:

“What happens though when the switch receives a frame with a destination MAC address that is not includedin the table? In that case the switch will just broadcast/flood the frame with the unknown destination address toall of its ports (apart from the port where the frame came from). This process is called unknown unicastflooding. ” http://telconotes.wordpress.com/2013/03/09/how-a-switch-works/

QUESTION NO:5

At which layer of the OSI model does TCP operate?

A. 1

B. 2

C. 3

D. 4

E. 5

Answer: D Explanation:

http://en.wikipedia.org/wiki/OSI_model

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