640 - 607
Explanation: Connection oriented protocols are reliable as the usually acknowledge the receipt of data packets. TCP is connection oriented.
Incorrect Answers:
A is incorrect; TCP is connection oriented and guarantees packet delivery and order.
B is incorrect; TCP is connection oriented, and guarantees packet ordering
C is incorrect; TCP does not mix with UDP, a different transport protocol.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 29 and 207.
Q. 202
Which command sets IGRP as the routing protocol for autonomous system 100?
A.Router(config)# igrp 100
B.Router(config)# network 100
C.Router(config)# router igrp 100
D.Router(config)# enable igrp 100
Answer: C
Explanation: To enable IGRP as a routing process one uses the router igrp command. This command must include the AS number within it. Thus the command to set IGPR for AS 100 is:
router igrp 100
Incorrect Answers:
A is incorrect; igrp 100 is not a valid command.
B is incorrect; the network command it used to identify what network the AS is directly connected to. In this case (network 100) the command is wrong as it contain the AS number and not the network number.
D is incorrect; the enable command is used for entering privilege mode. Further the enable command does not use the AS number.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages
Q. 203
The ICMP (referred to in RFC 1700) is implemented by all TCP/IP hosts?
A.TRUE
B.FALSE
Answer: A
Explanation: This is a requirement because ICMP is has other uses besides ping, for example destination unreachable or when ICMP is sent to provide better routing information.
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