adplus-dvertising
frame-decoration

Question

Packet radio uses _________ and __________ signals for perfect feedback.

a.

Forward, reverse

b.

ACK, NACK

c.

Active, passive

d.

Linear, non linear

Answer: (b).ACK, NACK

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Packet radio uses _________ and __________ signals for perfect feedback.

Similar Questions

Discover Related MCQs

Q. Packet radio has high spectral efficiency.

Q. ___________ is defined as average number of messages successfully transmitted per unit time in packet radio multiple access technique.

Q. What is the time period during which the packets are susceptible to collisions with transmissions from other users?

Q. For a PR multiple access technique, packet transmissions occur with __________ distribution.

Q. If λ is mean arrival rate and τ is the packet duration, then traffic occupancy of a packet radio network is equal to _________

Q. Pure ALOHA is __________

Q. For pure ALOHA protocol, the vulnerable period is ___________ the packet duration.

Q. The vulnerable period of slotted ALOHA is _________ packet duration.

Q. In slotted ALOHA, time is divided into different length of time slots.

Q. CSMA stands for _________

Q. __________ is the time required for a terminal to sense whether or not the channel is idle.

Q. Which of the following is based on time division multiplexing?

Q. Discrete packet time technique, PRMA stands for _________

Q. ____________ is the maximum number of channels that can be provided in a fixed frequency band.

Q. Which of the following measures spectrum efficiency of a wireless system?

Q. If D is the distance between co-channel cells and R be the cell radius, co-channel reuse ratio is given by __________

Q. __________ is the interference at a base station receiver that comes from the subscriber units in the surrounding cells.

Q. In practice, TDMA systems improve capacity by ____________ compared to analog cellular systems.

Q. __________ allows subscribers to monitor neighbouring base stations.

Q. Time division multiple access introduces ACA, which stands for ________