Business Data Communications and Networking, 10th Edition by Jerry FitzGerald, Alan Dennis

By Jerry FitzGerald, Alan Dennis

Over the last few years, many primary alterations have happened in information communications and networking that would form the longer term for many years to come.Updated with the most recent advances within the field, Jerry FitzGerald and Alan Dennis' tenth variation of industrial info Communications and Networking keeps to supply the basic techniques and state-of-the-art assurance functions that scholars have to achieve this fast-moving field. Authors FitzGerald and Dennis have built a origin and balanced presentation from which new applied sciences and functions will be simply understood, evaluated, and in comparison.

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Bank (BEB). BEB has just purchased Ohio Bank (OB), a small regional bank that has 30 branches spread over Ohio. OB has a WAN connecting five cities, in which it has branches, to OB’s main headquarters in Columbus. It has a series of MANs in those cities, which in turn connect to the LANs in each of the branches. The OB network is adequate but uses very different 34 CHAPTER 1 INTRODUCTION TO DATA COMMUNICATIONS data link, network, and transport protocols than those used by BEB’s network. Smith’s task is to connect OB’s network with BEB’s network.

323 (audio/video) SMTP, IMAP, POP (e-mail) 4. Transport layer TCP (Internet and LANs) SPX (Novell LANs) 3. Network layer IP (Internet and LANs) IPX (Novell LANs) 2. Data link layer Ethernet (LAN) Frame relay (WAN) T1 (MAN and WAN) 1. 5 Some common data communications standards. HTML = Hypertext Markup Language; HTTP = Hypertext Transfer Protocol; IMAP = Internet Message Access Protocol; IP = Internet Protocol; IPX = internetwork package exchange; LAN = local area network; MPEG = Motion Picture Experts Group; POP = Post Office Protocol; SPX = sequenced packet exchange; TCP = Transmission Control Protocol 26 CHAPTER 1 INTRODUCTION TO DATA COMMUNICATIONS another one at the physical layer.

Com and sign-up for Yahoo Instant Messenger; then download and install it—or use the IM tool of your choice. Buy an inexpensive Webcam with a built-in microphone. 2. Get your parents to do the same. 3. 8). It’s free, so there’s no phone bill to worry about, and the video will make everyone feel closer. If you want to feel even closer, connect to them and just leave the voice and video on while you do your homework; no need to talk, just spend time together online. 8 Voice, video, and data in Yahoo Instant Messenger Part Two FUNDAMENTAL CONCEPTS Courtesy Cisco Systems, Inc.

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