Cisco Systems 2 Answer A, B, D Explanation, What are two purposes for using switches? Choose two

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C.The data packet is independently routed and the service does not guarantee the packet will be processed in order.

D.A data communication path is established between the requesting entity and the peer device on the remote end system.

Answer: A, B, D.

Explanation:

In order to establish a connection-orientated service, the connection must first be established. An example of this would the TCP/IP suites use of the three-way handshake. The sending and receiving of synchronization and acknowledgment packets between the sending system and the receiving system accomplish a three-way handshake. Errors can be corrected when the sender does not receive an acknowledgment, within a specified amount of time, from the receiving system the packet will be resent.

Incorrect Answers:

C is incorrect; due to the acknowledgement of packets, the order that packets are received is ensured.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 29-30.

Q. 225

What are two purposes for using switches? (Choose two)

A.To reduce collisions

B.To increase collisions

C.To increase the number of collision domains

D.To decrease the number of collision domains

E.To decrease the number of broadcast domains

Answer: A, C.

Explanation:

A switch creates multiple collision domains, and reduces the number of nodes in the domain. This results in less contention and interference which in turn reduces the number of collisions.

Incorrect Answers:

B is incorrect; switches are design to REDUCE collisions and not increase them.

D is incorrect; when a switch segments a network it increase the number of domain and it does not reduce them. E is incorrect; a switch neither increase nor decreases the broadcast domains.

Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 30-31.

Q. 226

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