Which of the following is used in the options field of IPv4 ?
2014
Which of the following is used in the options field of IPv4 ?
Answer: D. All of the above — Answer: All of the above Explanation: The IPv4 header includes an optional 'options' field that can carry various control or recording information. The given…
- A.
Strict source routing
- B.
Loose source routing
- C.
time stamp
- D.
All of the above
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Correct answer: D
Answer: All of the above
Explanation: The IPv4 header includes an optional 'options' field that can carry various control or recording information. The given items are all standard examples of IPv4 options:
Strict source routing: Specifies an exact sequence of intermediate IP addresses that the packet must follow.
Loose source routing: Provides a list of intermediate addresses that should be visited but allows other hops between them.
Timestamp: Records timestamps (and optionally the router addresses) as the packet traverses the network.
Note: IPv4 options exist but are infrequently used in modern networks because they add processing overhead and can create security concerns.