7.4 Layer 2 Devices 7.4.1 NICs Instructor Note The purpose of this target indicator is to have the students give a detailed description of a 10Base-T NIC. In Chapter 3, all the devices were introduced. The purpose here is to go deeper, both for understanding and retention. Note that the half-duplex

7.2 Basics of Fiber Distributed Data Interface (FDDI) 7.2.2 FDDI format Instructor Note Again, building upon the generic frame format in Chapter 6 and the Token Ring Frame Format just introduced, present the FDDI frame format. Again a Token flag is present; all the typical aspects of frames are

Overview The previous chapter discussed LAN media and the IEEE model and how the data link layer provides reliable transit of data across a physical link by using the Media Access Control (MAC) addresses. This chapter introduces layer 2 LAN technologies. Ethernet, Fiber Distributed Data Interface

6.5 Media Access Control (MAC) 6.5.1 Definition of MAC Instructor Note The purpose of this target indicator is to introduce an extremely important acronym -- Media Access Control, or MAC. Media Access Control (MAC) refers to protocols that determine which computer on a shared-medium environment

6.4 Framing 6.4.1 Why framing is necessary Instructor Note The purpose of this target indicator is to justify the necessity of frames in data communications. Encoded bit streams on physical media represent a tremendous technological accomplishment, but they, alone, are not enough to make

6.3 MAC Addressing 6.3.1 Data link layer MAC identifiers Instructor Note This target indicator presents a crucial layer two problem: how to differentiate amongst the different computers attached to the medium. The MAC address is introduced as the solution to this problem Without MAC addresses, we

6.2 Hexadecimal Numbers 6.2.1 Hexadecimal numbers as MAC addresses Instructor Note The purpose of this target indicator is to justify for the students the learning of a third number system. While it may seem abstract and of questionable use, the students will need to read hexadecimal numbers when

Overview All data sent out on a network is from a source and is going to a destination. After data is transmitted, the data link layer of the OSI model provides access to the networking media and physical transmission across the media, which enables the data to locate its intended destination on a

Lab 5.3.1 Basic Cable TesterEstimated time: 30 min.Objectives:Use a cable tester to verify that a straight-thru or crossover cable is good or bad Background:UTP Ethernet Cabling: Cabling is one of the most critical areas of network design and implementation. The cabling is expected to last from 10

5.6 Basic Topologies Used in Networking 5.6.1 Network topologies Instructor Note The purpose of this target indicator is to introduce the study of topologies. Emphasize topology as a branch of mathematics, which deals with networks of nodes and links. Pose the following problem: given n nodes, how