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646 Appendix A: Answers to Review Questions
15
What device terminates the bandwidth domain?
Switch.
16
What protocol is recommended for use on the Internet?
TCP/IP.
17
What is media contention?
Media contention relates to excessive collisions on Ethernet or long waits for the token on
a Token Ring network.
18
What protocol is recommended for integrating voice, video, and data?
ATM.
19
True or false: Transport problems are usually caused when the network bandwidth is not
available to deliver the payload that the applications request.
True.
20
Although broadcasts play an important function in network communications, excessive
broadcasts can make the network inefficient. What can the CCDP do to remedy the
problem of excessive broadcasts?
The CCDP should ensure that routers are strategically placed in the campus LAN network
to minimize the impact of broadcast traffic.
21
List two applications that require high-speed Quality of Service transport.
Voice and video.
22
What Cisco IOS features can optimize core layer transport?
Compression and queuing.
23
What is the biggest trade-off of a distributed backbone?
Cost.
24
What is the 80/20 rule? Explain why some people now refer to it as the 20/80 rule.
The 80/20 rule allows for 80 percent of the network traffic to remain on the local subnet.
Some people call it the 20/80 rule because now only 20 percent of the network traffic is
expected to be on the local network.
25
What devices terminate the broadcast domain?
Router.
87200333.book Page 646 Wednesday, August 22, 2001 1:41 PM