Understanding Data Communications and Networks
Thoroughly updated for currency, this book offers a clear presentation of data communications and network fundamentals. Featuring a wide array of applications, the book fully explains concepts and supports them with case studies or descriptions of specific software and other products. Students learn the protocols of analog and digital signals, data compression, data integrity, data security, local area networks, asynchronous transfer mode (ATM), and much more. The third edition includes important information on the latest developments of the Internet.
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lntroduction to Communications Standards
Fully Connected Topology 12 Combined
Network Layer 30 Transport Layer 31
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acknowledgment algorithm allows amplitude analog signal application area networks arrive binary bit string bridge buffer bytes cable channel character collision command communications connection contains cost data frame data link data link layer data rate defines destination detect devices discussed encoding encryption error Ethernet example Figure flow control frame number frequency functions go-back-n HDLC header Huffman code interface Internet ISDN Kermit modem modulation multiplexing NetWare node number of bits occur optical fiber packet parity bit parity checks priority problem protocol remote request response router routing table satellite Section sender sends frames sent session session layer slot specified standard stored Suppose synchronization TCP/IP telephone TELNET terminal timer tion token bus token ring topology TPDU transfer transmission transmitted transport layer typically virtual circuit wait window