Question Bank - Computer Networks

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How many digits of the Network User Address are known as the DNIC (Data NetworkIdentification Code)?

A.
first three
B.
first four
C.
first five
D.
first seven

Solution:

DNIC (Data Network Identification Code) in which data country codes are assigned by ITU. The ITU “ T recommendation X. 121 stipulates that the assignment of data country codes is administered by the ITU.X.121 is called as international data number. It is an address of an end node that is connected to an X.25 data network.In X.121 address, first four digits of network user address are known as DNIC.Diagram:

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