In FDM, how is the channel divided among nodes?
Anonymous Quiz
9%
Based on time slots
5%
Based on unique codes
79%
Based on different frequencies
7%
Based on collision detection
What is the disadvantage of both TDM and FDM?
Anonymous Quiz
40%
Fixed-length slots
20%
Lack of synchronization
8%
Increased collisions
31%
All above
Which random access protocol uses equal-sized slots and assumes synchronized nodes?
Anonymous Quiz
81%
Slotted ALOHA
12%
Pure ALOHA
7%
CSMA
1%
CAM
Which random access protocol has a maximum efficiency of 18%?
Anonymous Quiz
8%
Slotted ALOHA
87%
Pure ALOHA
4%
CSMA
1%
CDMA
In CDMA, how are different nodes distinguished from each other?
Anonymous Quiz
21%
Time slots
5%
Frequencies
42%
Unique codes
33%
All
What is the advantage of slotted ALOHA over pure ALOHA?
Anonymous Quiz
50%
Higher channel efficiency
32%
Lower collision rate
18%
Ability to transmit at full channel rate
Which random access protocol has a higher maximum efficiency: Slotted ALOHA or pure ALOHA?
Anonymous Quiz
79%
Slotted ALOHA
7%
Pure ALOHA
7%
Both have the same maximum efficiency
7%
Neither protocol achieves maximum efficiency
requires one master node to poll each of the nodes in a round-robin fashion.
Anonymous Quiz
5%
Rules protocol
90%
polling protocol
4%
traffic protocol
1%
Corona protocol
collision detection … in wired, … with wireless
Anonymous Quiz
2%
difficult – difficult
16%
difficult – easy
83%
easy – difficult