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104
Chapter 2
Protocol Attributes
Summary
A
great deal of information was covered in this chapter. The focus of
the chapter has been on Network and Data-Link Layer protocols. It is
important to understand this information to facilitate troubleshooting. If
you do not sufficiently understand the protocols present in Layers 2 and 3 of
the OSI model, you should study them in depth. The majority of networking
problems occur in these two layers.
Let's review what was covered:
Connectionless vs. Connection-Oriented Protocols You learned that
connection-oriented protocols use flow and error control information to
ensure error-free data transfer. Connectionless protocols do not provide
such features.
Network Layer Protocols We discussed IP and other members of the IP
suite, such as ICMP and TCP. Routing protocols were also discussed.
Data-Link Layer protocols and technologies This section included
information on all major Layer 2 technologies, such as Ethernet, Frame
Relay, FDDI, X.25, ISDN, and SDLC.
Key Terms
Before you take the exam, be certain you are familiar with the following
terms:
Active Monitor
AppleTalk Address Resolution Protocol (AARP)
Basic Rate Interface (BRI)
Border Gateway Protocol (BGP)
carrier sense, multiple access/collision detection (CSMA/CD)
connectionless protocols
connection-oriented protocols
Datagram Delivery Protocol (DDP)
Enhanced IGRP
error control
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