Question

In ATM networks for 24-bits UNI, the size of VCI is:

Answer 1

Answer:

Explanation:

In a UNI, the VPI is 8 bits, whereas in an NNI, the VPI is 12 bits. The length of the VCI is the same in both interfaces (16 bits). We therefore can say that a virtual connection is identified by 24 bits in a UNI and by 28 bits in an NNI.

ATM transports voice, data, or video information in fixed length units called cells. Each cell is 53 bytes long and contains cell header and payload fields.

VPI—The Virtual Path Identifier is an 8- or 12-bit field used to identify paths between sites on the ATM network. ... VCI—The Virtual Connection Identifier is a 16-bit field used to identify paths between individual devices on the ATM network.

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