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Exam CWAP-402 topic 1 question 15 discussion

Actual exam question from CWNP's CWAP-402
Question #: 15
Topic #: 1
[All CWAP-402 Questions]

What is the Extended IFS used in 802.11 contention?

  • A. When the higher data rates are used and you want the fastest medium access times
  • B. When the lower data rates are used and you want the fastest medium access times
  • C. When 802.11ac must coexist with 802.11n
  • D. When a frame reception begins but the received frame is incomplete or corrupted based on the FCS
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Suggested Answer: C

Comments

Truthliswhat
3 weeks, 3 days ago
Answer is D - When a frame is received with errors or corrupted the receiver will respond with EIFS which tells the sender to wait for a longer period so it can see if the packet was delivered correctly. Once this happens, it will start go back to using a normal DIFS or AIFS
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