COMPUTER NETWORKING

Detailed explanation-1: -Explanation: A short VC number also called as VCID (virtual circuit identifier) is a type of identifier which is used to distinguish between several virtual circuits in a connection oriented circuit switched network. Each virtual circuit is used to transfer data over a larger packet switched network.

Detailed explanation-2: -A virtual circuit (VC) is a means of transporting data over a data network, based on packet switching and in which a connection is established within the network between two endpoints.

Detailed explanation-3: -Suppose the VC number is an 8-bit field. a. What is the maximum number of virtual circuits that can be carried over a link? Maximum number of VCs over a link = 28 = 256.

Detailed explanation-4: -The identifier that is actually used for data transfer is called the virtual-circuit identifier (VCI). A VCI, unlike a global address, is a small number that has only switch scope. It is used by a frame between two switches. When a frame arrives at a switch, it has a VCI; when it leaves, it has a different VCI.