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Which class of IP address has the first octet range from 1 to 126?

easy📝 Conceptual Q11 of 15
Computer Networks - IP Addressing
Which class of IP address has the first octet range from 1 to 126?
AClass D
BClass B
CClass C
DClass A
Step-by-Step Solution
Solution:
  1. Step 1: Understand IP class ranges

    Class A addresses have the first octet from 1 to 126.
  2. Step 2: Match the range to the class

    Since 1-126 matches Class A, this is the correct class.
  3. Final Answer:

    Class A -> Option D
  4. Quick Check:

    1-126 = Class A [OK]
Quick Trick: Class A starts with 1-126 in first octet [OK]
Common Mistakes:
MISTAKES
  • Confusing Class A with Class B range
  • Including 0 or 127 in Class A range
  • Mixing Class D with Class A

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