Basic Network interview questions

What is the advantage of a network?

The main advantage of a network is that it makes resource sharing possible among the connected systems, thus helping in better utilization of resources

Which is the most widely used protocol on Internet?

Hypertext transfer protocol (http) is the most used protocol on Internet. The next on internet is sent of received from one machine to another using this protocol only

What is the difference between an executable file and a class file?

Exe file contains machine language instructions for the microprocessor and is system dependent class file contains byte code instructions for the JVM and is system independent