Computer Networking

1509
What Is a Protocol
What Is a Protocol

Now that we've got a bit of a feel for what the Internet is, let's think about another important buzzword in computer networking: protocol. What is a protocol? What does a protocol do?

Tags computer networking, protocol, communicating entities
1833
The Network Edge
The Network Edge

In the preceding section we presented a high-level outline of the Internet and networking protocols. We are now going to look into a bit more deeply into the components of a computer network (and the Internet, particularly). We begin in this section at the edge of a network and

Tags network core, computer networking, end systems
13900
Comparing Transmission and Propagation Delay
Comparing Transmission and Propagation Delay

Newcomers to the field of computer networking often have difficulty understanding the difference between transmission delay and propagation delay. The difference is slight but important. The transmission delay is the amount of time needed for the router to push out the

Tags computer networking, transmission delay, propagation delay
8485
Queuing Delay and Packet Loss
Queuing Delay and Packet Loss

The most complex and interesting element of nodal delay is the queuing delay, dqueue. In reality, queuing delay is so important and interesting in computer networking that thousands of papers and several books have been written about it [Bertsekas 1991; Daigle 1991; Kleinrock 1975, 1976; Ross 1995].

Tags packet loss, queuing delay, computer networking
2296
Protocol Layers and Their Service Models
Protocol Layers and Their Service Models

From our discussion so far, it is obvious that the Internet is very complicated system. We have seen that there are many pieces to the Internet: various applications and protocols, different types of end systems, packet switches, and several types of link-level media. Given

Tags end systems, packet switches, computer networking
1437
Networks Under Attack
Networks Under Attack

The Internet has become mission critical for many institutions today, including large and small companies, universities, and government agencies. Many individuals also depend on the Internet for many of their professional, social, and personal activities. But behind all this utility

Tags network security, computer networking, protocol
954
Recent Developments
Recent Developments

Modernization in computer networking continues at a fast pace. Advances are being made on all fronts, including use of new applications, content distribution, Internet telephony, higher transmission speeds in LANs, and faster routers. But three developments merit special

Tags computer networking, network security, p2p networking
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