For example, if you’re sending data from Host A to Host B, as shown in Figure 9-1, your bytes leave the application layer on Host A and travel through the transport and network layers on Host A; then they go down to the physical medium, across the medium, and up again through the...
Computer networks are a bit like the army: everything in a network has to be arranged with almost military precision and it has to behave according to very clearly defined rules. In a LAN, for example, you can't connect things together any old how: all the nodes (computers and other ...
A network is a group of connected computers that are able to send data to each other. A computer network is much like a social circle, which is a group of people who all know each other, regularly exchange information, and coordinate activities together. The Internet is a vast, sprawling ...
It brilliantly allowed the whole of the earth's computers to be webbed together and navigated through hyperlinks. But the links were one-way: You knew where the links took you... But if you had a webpage or piece of content, you didn't exactly know who was linking to you or coming...
must define what a "network" is. A network is a group of connected computers that are able to send data to each other. A computer network is much like a social circle, which is a group of people who all know each other, regularly exchange information, and coordinate activities together....
Some people say that the increasing use of computers and mobile phones for communication has had a negative effect on young people's reading and writing skills. To what extent do you agree or disagree? Give reasons for your answer and include any relevant examples from your own knowledge or ...
Packets also enable multiple computers to share the same connection. For example, the same server can transmit different files to multiple computers at the same time. Such flexibility means that different types of data can be transmitted over the same network simultaneously and without data losses....
Using a home network allows you to share files, internet, and games between multiple locally connected computers with nearly non-existent ping, and remotely access printers, cameras, and other devices. There are two ways to create a home network. You can either set up a wired or a wireless...
When the internet was in its infancy, it consisted of a small number of computers hooked together with modems and telephone lines. You could only make connections by providing the IP address of the computer you wanted to establish a link with. For example, a typical IP address might be 216...
Getting Networked Computers to Speak the Same Language When people first started connecting computers together, they had to decide on a common language that computers could understand. Those languages, called network protocols, were developed separately from one another, depending on the types of comput...