Advanced Java

1. What is a transient variable?
   A transient variable is a variable that may not be serialized.
2. Which containers use a border Layout as their default layout?
   The Window, Frame and Dialog classes use a border layout as their default layout.
3. Why do threads block on I/O?
   Threads block on I/O (that is enters the waiting state) so that other threads may execute while the I/O Operation is performed.
   

Networking Interview Questions and Answers

1. Define Network?
   A network is a set of devices connected by physical media links. A network is recursively is a connection of two or more nodes by a physical link or two or more networks connected by one or more nodes.
2. What is a Link?
   At the lowest level, a network can consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. Such a physical medium is called as Link.
3. What is a node?
   A network can consist of two or more computers directly connected by some physical medium such as coaxial cable or optical fiber. Such a physical medium is called as Links and the computer it connects is called as Nodes.