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Category: 640-721

Cisco Certified Network Associate Wireless (CCNA® Wireless)

What is the reason behind this problem?

You work as a Network Administrator for Tech Perfect Inc. You have to implement a wireless LAN
network for the company. After implementing the network, you check all the functions and find that
most of its clients try to send data on the same channel at the same time. As a result, a collision
occurs in the network and it affects the communication. What is the reason behind this problem?

Which physical layer function can a network administrator perform todetermine whether or not any device is sen

A company has a wireless network. In this network, collisions occur when more than one device
sends data at the same time. Which physical layer function can a network administrator perform to
determine whether or not any device is sending data to the channel?

Which of the following vulnerabilities may occurwhile the client and the AP exchange the challenge text over t

John works as a network administrator for Web Perfect Inc. The company has a wireless LAN
network. John has configured shared key authentication on a client. The client and the AP start
exchanging the frames to enable authentication. Which of the following vulnerabilities may occur
while the client and the AP exchange the challenge text over the wireless link?


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