Multiple choice

How many class A, B and C network IDs can exist?

  1. 2, 113, 658

  2. 16, 382

  3. 126

  4. 128
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Class A: 2^7 - 2 = 126 IDs (first and last reserved), Class B: 2^14 - 16 = 16,382 IDs, Class C: 2^21 - 256 = 2,097,088 IDs. However, the question asks how many CAN exist - all classes combined: 126 + 16,382 + 2,097,088 = 2,113,596.

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