JAMIA 2026 — Computer PYQ

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Question

JAMIA 2026 — Computer PYQ

JAMIA | Computer | 2026

Which of the following should be an invalid IP address in IPv4?

Choose the correct answer:

Explanation

Correct Answer: (d) 172.260.255.253

Detailed Explanation

As seen in image_8d559a.png, the objective is to determine which option does not conform to the rules of a standard IPv4 address configuration.

IPv4 Structure: An Internet Protocol version 4 ( $IPv4$ ) address consists of $32$ bits structured into four 8-bit blocks called octets, separated by dots (dotted-decimal notation).
The Mathematical Constraint: Since each octet contains exactly $8$ bits, the numeric value for any individual octet can only range from a minimum of $0$ to a maximum of $2^{8} - 1$ , which translates mathematically to:
$Valid Octet Range = [0, 255]$
Why Option (d) is Invalid: Looking closely at the address $172.260.255.253$ , the second octet value is 260. Because $260 > 255$ , it is mathematically impossible to represent this number within an 8-bit binary limit, making it a completely invalid IPv4 address.