Match List - I with List - II. List - I (IP Address) List - II (Class) (A)…
2024
Match List - I with List - II.
List - I (IP Address) | List - II (Class) |
(A) 10.20.30.40 | (I) Class E |
(B) 210.20.30.3 | (II) Class B |
(C) 180.30.100.10 | (III) Class A |
(D) 252.5.15.11 | (IV) Class C |
Choose the correct answer from the options given below:
- A.
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
- B.
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
- C.
(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- D.
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
Attempted by 914 students.
Show answer & explanation
Correct answer: D
Key insight: determine the class from the first octet of the IPv4 address.
Class A: first octet 1–126 (example: 10.x.x.x)
Class B: first octet 128–191 (example: 180.x.x.x)
Class C: first octet 192–223 (example: 210.x.x.x)
Class D: first octet 224–239 (multicast)
Class E: first octet 240–255 (experimental/reserved)
Apply the rule to each IP address:
10.20.30.40 — first octet 10 is in 1–126, so this is Class A.
210.20.30.3 — first octet 210 is in 192–223, so this is Class C.
180.30.100.10 — first octet 180 is in 128–191, so this is Class B.
252.5.15.11 — first octet 252 is in 240–255, so this is Class E.
Final matching: 10.20.30.40 → Class A; 210.20.30.3 → Class C; 180.30.100.10 → Class B; 252.5.15.11 → Class E.
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