ch04_CE - Guide to Networking Essentials Fifth Edition...

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Guide to Networking Essentials, Fifth Edition 4-1 Chapter 4 Network Interface Cards At a Glance Instructor’s Manual Table of Contents Overview Objectives Teaching Tips Quick Quizzes Class Discussion Topics Additional Projects Additional Resources Key Terms Technical Notes for Hands-On Projects
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Guide to Networking Essentials, Fifth Edition 4-2 Lecture Notes Overview Chapter 4 offers an introduction to network interface cards (NICs). Students learn about a NIC’s function and configurable options, as well as how to select an appropriate network adapter. They also learn about the special-purpose NICs and the role of driver software in network adapters. Objectives Describe a network interface card’s function and configurable options List important factors for selecting network adapters Describe types of special-purpose network interface cards Explain the role of driver software in network adapters Teaching Tips Network Interface Cards (NIC) Basics 1. Explain the role of a NIC (basically, establishing a link between a computer and a network, and then managing that link). Teaching Tip Read more about network cards at: http://en.wikipedia.org/wiki/Network_interface_card . From Parallel to Serial and Vice Versa 1. Use Figure 4-1 to explain why a NIC needs to redistribute data coming serially to parallel lines, and vice versa. Don’t forget to introduce the terms computer bus , parallel transmission , serial transmission , buffer , and bus width . Teaching Tip The process of translating data bits that a computer generates into a suitable form for the network medium is called encoding. Encoding is covered in greater detail in Chapter 5. 2. Use Figure 4-2 to describe the components of an Ethernet NIC. Don’t forget to introduce the terms ISA , adapter slot , and PCI .
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Guide to Networking Essentials, Fifth Edition 4-3 Teaching Tip Read more about computer buses at: http://en.wikipedia.org/wiki/Computer_bus . Additional Functions of a NIC 1. Explain each of the additional functions of a NIC: a. Create, send and receive frames . Teaching Tip Stress that the term “packet” is often used to describe the unit of information sent between network devices, but “frame” is more accurate when discussing the unit of information the NIC handles. b. Deal with frame-level errors and incomplete or unintelligible frame structures. c. Manage access to medium. d. Act as gatekeeper (describe the role of the MAC address and the card’s promiscuous mode ). Teaching Tip Explain that the address on a NIC is called the MAC address because the NIC’s Media Access Control functions handle it. These addresses take the form of six two-digit hexadecimal numbers separated by colons—for example, 00:60:97:33:90:A3 is a MAC address. The first three numbers identify the manufacturer; the second three numbers define a unique address assigned to the NIC. Teaching
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This note was uploaded on 12/19/2011 for the course CSCI 101 taught by Professor Dr.ambrose during the Spring '11 term at Community College of Baltimore County.

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ch04_CE - Guide to Networking Essentials Fifth Edition...

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