1.Why must IEEE 802.11 wireless networks employ collision avoidance instead of s

Question

1.Why must IEEE 802.11 wireless networks employ collision avoidance instead of simply collision detection?

2.Must all MAC addresses employed worldwide by IEEE 802.11 interface cards in mobile devices and fixed access points, be unique? Why or why not?

3.Briefly describe three distinct types of denial-of-service (DOS) attacks that may be performed on IEEE802.11 wireless networks. Each of the three attacks should be at a different layer of the protocol stack.

4.In an effort to reduce the likelihood of intruders employing passive scanning to assess the security of an IEEE802.11 wireless network, the owner of a wireless access point enables a facility so that only registered MAC addresses may use the access point. Explain why this measure would be ineffective against a determined intruder assessing the network's security.

Explanation / Answer

As, it is chegg policy to answer one question per answer.Hence, I am answering first question and request you to post rest of the question individually.Thankyou.

1.Why must IEEE 802.11 wireless networks employ collision avoidance instead of simply collision detection?

Hence, this is why there arised an need for the CSMA/CA i.e. collision avoidance.

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