| A | Full source and destination address |
| B | A short VC number |
| C | Only source address |
| D | Only destination address |
The correct answer is :B
Easy explanation:
In connection-oriented circuit-switched networks, a concise VC number, commonly referred to as a VCID (virtual circuit identifier), assumes a pivotal role. It serves as a distinguishing factor amidst numerous virtual circuits formed within the broader packet-switched network. Each virtual circuit signifies a designated route for communication, thereby enabling seamless data transmission between network endpoints. Through the allocation of a distinct VCID to each virtual circuit, the network adeptly monitors and guarantees the precise delivery of data to its intended destination.
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