Understanding Data Communications and NetworksThe explosion of the World Wide Web has created greater awareness of computer networks, and has made understanding network fundamentals and data communications essential. The Second Edition of Shay's best-selling book combines a solid and well-respected presentation of data communications and network fundamentals, with important information on the state-of-the-art developments that support the World Wide Web. New topics include asynchronous transfer mode (ATM), modems, and new topics in encryption and network security. Expanded coverage of LAN/WAN systems and protocols includes the Netware LAN operating system and TCP/IP and IPv4 WAN protocols, with new coverage of the IPv6 WAN protocol. Dr. Shay presents these fundamentals, and a wide array of specific applications, at exactly the right level for Junior CS and CIS majors intending to be information systems professionals. |
From inside the book
Results 1-3 of 58
Page 17
... Data Encryption Standard ( DES ) , a method of encrypting or changing information ... layer model ( Figure 1.11 ) . Each layer performs spe- cific functions and ... link layer and physical layer perform separate functions . The physical ...
... Data Encryption Standard ( DES ) , a method of encrypting or changing information ... layer model ( Figure 1.11 ) . Each layer performs spe- cific functions and ... link layer and physical layer perform separate functions . The physical ...
Page 22
... data ? Or does it consist of many intermittent transfers ? The telephone network is ... layer above . One problem is that if the packets follow different routes ... link layer supervises the flow of information between adjacent net- work ...
... data ? Or does it consist of many intermittent transfers ? The telephone network is ... layer above . One problem is that if the packets follow different routes ... link layer supervises the flow of information between adjacent net- work ...
Page 28
... connection strategies we have presented . DATA LINK Layer While the physical layer sends and receives data , the data link layer sits above it and makes sure that it works correctly . For example , what happens if two nodes simulta ...
... connection strategies we have presented . DATA LINK Layer While the physical layer sends and receives data , the data link layer sits above it and makes sure that it works correctly . For example , what happens if two nodes simulta ...
Contents
INTRODUCTION TO COMMUNICATIONS STANDARDS | 1 |
1 | 7 |
Topologies | 13 |
Copyright | |
20 other sections not shown
Common terms and phrases
acknowledgment algorithm allows analog signal applications area network arrive bit rate bridge buffer bytes cable called cell channel character client collision commands communications compression connection contains cost data frame data link data link layer data rate decryption defines destination devices discussed encryption Ethernet example Figure flow control format frequency functions HDLC header interface Internet IPv4 IPv6 ISDN local area network modem modulation multiplexer NetWare node number of bits optical fiber packet parity bit phase shift problem protocol receiver remote request response router routing table satellite Section segment sender sends frames sent sequence number server session layer slot socket specified standard station stored switching synchronization telephone terminal timer tion token bus token ring topology TPDU transfer transmission transmitted types typically virtual circuit wait window