How many digits of the DNIC Data network identification code identify the country ........

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How many digits of the DNIC (Data network identification code) identify the country?

First three

First four

First five

First six

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Explanation:

Ans: A. First three

First three digits of the DNIC (Data Network Identification Code) identify the country.

The DNIC has three digits to identify the country (one to identify a zone and two to identify the country within the zone) and one to identify the PDN (allowing only ten in each country). data network identification code (DNIC): In the CCITT International X.121 format, the first four digits of the international data number, the three digits that may represent the data country code, and the 1-digit network code, i.e. , the network digit.

data network identification code (DNIC): In the CCITT International X.121 format, the first four digits of the international data number, the three digits that may represent the data country code, and the 1-digit network code, i.e. , the network digit.