114
Chapter 2
Protocol Attributes
Answers to Review Questions
1.
B. Connection-oriented is a protocol type, in addition, it provides
error and flow control. Connectionless protocols, such as IP and UDP,
do not.
2.
A, C, E, F. UDP and IP are both connectionless protocols.
3.
B, D, F, G. Frame Relay, PPP, and SDLC are all connection-oriented
protocols.
4.
A. ICMP provides environmental statistics for IP networks. The other
protocols do not.
5.
C. Window sizes are transmission sizes. Once the window size is
reached, the sending computer awaits an ACK packet, informing the
sending computer that the receiving computer received the entire
transmission.
6.
D. Due to the simplicity of connectionless protocols, they create less
overhead and also use less bandwidth.
7.
A. The hop count indicates limitations on how far a packet could go.
8.
B, E, G. IGRP classifies the different routes that it can learn into the
categories of Interior, System, and Exterior.
9.
A, C, D. These features help maintain stable routes within IGRP and
EIGRP.
10.
B, C, E, G. These items were added to EIGRP to allow it to scale bet-
ter as well as respond more quickly.
11.
A, B. EIGRP is a hybrid protocol that does not use areas. Both OSPF
and EIGRP maintain topology databases and use incremental updates.
12.
C. A peer cannot connect if there is not a TCP connection first.
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