Answer:
TDMA: Time-division multiple access (TDMA) will operate effectively.
CSMA: Carrier-sense multiple access (CSMA) will NOT operate properly.
Slotted Aloha: Slotted Aloha will NOT perform effectively.
Token passing: Token passing will operate effectively.
Step-by-step explanation:
Note: This question is not complete. The complete question is therefore provided before answering the question as follows:
Suppose you were charged with putting together a LAN to support IP telephony (only) and that multiple users may want to carry on a phone call at the same time. Recall that IP telephony digitizes and packetizes voice at a constant bit rate when a user is making an IP phone call. How well suited are these four protocols for this scenario?
TDMA:
CSMA:
Slotted Aloha:
Token passing:
Provide a brief explanation of each answer.
The explanation of the answers is now provided as follows:
TDMA: Time-division multiple access (TDMA) will operate effectively in this situation because it provides a consistent bit rate service of one slot every frame.
CSMA: Because of collisions and a changing amount of time to access the channel, Carrier-sense multiple access (CSMA) will NOT operate properly in this situation. Also, the length of time it takes to access a channel is not limited.
Slotted Aloha: Just like CSMA, Slotted Aloha will NOT perform effectively in this situation because of collisions and a different amount of time to access the channel. Also, the length of time it takes to access a channel is limitless.
Token passing: Token passing will operate effectively in this case because each station has a turn to transmit once per token round, resulting in a service with an effectively constant bit rate.