Multiple choice

How many digits of NUA are known as DNIC (Data Network Identification Code)?

  1. First 3

  2. First 4

  3. First 5

  4. First 7

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Data Network Identification Code (DNIC) in the X.121 standard consists of the first 4 digits of the Network User Address.