Arrange the following interframe time interval in increasing order. A. PIFS…

2026

Arrange the following interframe time interval in increasing order.

A. PIFS (PCF interframe Spacing)

B. DIFS (DCF interframe Spacing)

C. SIFS (Short interframe Spacing)

D. EIFS (Extended interframe Spacing)

Choose the correct answer from the options given below:

  1. A, B, C, D

  2. B, C, A, D

  3. D, A, B, C

  4. C, A, B, D

  1. A.

    1

  2. B.

    2

  3. C.

    3

  4. D.

    4

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Correct answer: D

In IEEE 802.11 wireless networking, interframe spacing (IFS) durations determine the priority of access to the shared medium. The Short Interframe Spacing (SIFS) is the shortest duration, used for high-priority transmissions like acknowledgments. The PCF Interframe Spacing (PIFS) is slightly longer than SIFS, used by the Point Coordination Function to gain priority over DCF stations. The Distributed Coordination Function Interframe Spacing (DIFS) is longer than PIFS and is the standard waiting time for stations using the contention-based DCF. Finally, the Extended Interframe Spacing (EIFS) is the longest interval, used when a frame is received with errors to allow time for recovery. Therefore, the correct increasing order of these intervals is SIFS (C) < PIFS (A) < DIFS (B) < EIFS (D). This sequence corresponds to Option 4, making it the correct choice.

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