Question 1

Fading of the received radio signals in a mobile communication environment occurs because of .....

Accepted Answer

A) direct propagation 
B) multipath propagation 
C) bi-path propagation 
D) none of the above

Question 2

Which is not a variant of S-MAC?

Accepted Answer

A) timeout mac (tmac) 
B) dynamic sensor mac (dsmac) 
C) input-output mac (iomac) 
D) data gathering (dmac)

Question 3

A antenna which attempts to direct all its energy in a particular direction is called as a .............

Accepted Answer

A) directional antenna 
B) one to one antenna 
C) propagation antenna 
D) single direction antenna

Question 4

To avoid collisions on wireless networks, ________was invented.

Accepted Answer

A) csma/ca 
B) csma/cd 
C) either (a) or (b) 
D) both (a) and (b)

Question 5

In _______, collisions are avoided through the use of three strategies: the interframe space, the contention window, and acknowledgments.

Accepted Answer

A) csma/ca 
B) csma/cd 
C) either (a) or (b) 
D) both (a) and (b)

Exam 6: Multiple Access Techniques and Wireless Network Management

Fading of the received radio signals in a mobile communication environment occurs because of .....