Explore topic-wise MCQs in Digital Communications.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.

1.

For a throughput value of 0.20 to 0.67, which has less average delay?

A. S-ALOHA
B. Pure ALOHA
C. R-ALOHA
D. None of the mentioned
Answer» D. None of the mentioned
2.

For a throughput of value less than 0.20, which has less average delay?

A. S-ALOHA
B. Pure ALOHA
C. R-ALOHA
D. None of the mentioned
Answer» B. Pure ALOHA
3.

In which technique, packet size are constant?

A. Pure Aloha
B. Slotted Aloha
C. Pure & Slotted Aloha
D. None of the mentioned
Answer» B. Slotted Aloha
4.

In Aloha technique, the re-transmission takes place immediately.

A. True
B. False
Answer» C.
5.

The minimum packet size of Ethernet is

A. 81 bytes
B. 75 bytes
C. 72 bytes
D. 64 bytes
Answer» D. 64 bytes
6.

IN_WHICH_TECHNIQUE,_PACKET_SIZE_ARE_CONSTANT??$

A. Pure Aloha
B. Slotted Aloha
C. Pure & Slotted Aloha
D. None of the mentioned
Answer» B. Slotted Aloha
7.

For a throughput value of 0.20 to 0.67, which has less average delay?$

A. S-ALOHA
B. Pure ALOHA
C. R-ALOHA
D. None of the mentioned
Answer» D. None of the mentioned
8.

For_a_throughput_of_value_less_than_0.20,_which_has_less_average_delay?$

A. S-ALOHA
B. Pure ALOHA
C. R-ALOHA
D. None of the mentioned
Answer» B. Pure ALOHA
9.

For a higher throughput value which method works efficiently?

A. S-ALOHA
B. Pure ALOHA
C. R-ALOHA
D. None of the mentioned
Answer» D. None of the mentioned
10.

Which method is better suited for large population?

A. Straight polling
B. Binary tree search
C. Straight polling & Binary tree search
D. None of the mentioned
Answer» C. Straight polling & Binary tree search
11.

Binary tree search is used for

A. Multiple users
B. Single users
C. Single & Multiple users
D. None of the mentioned
Answer» B. Single users
12.

In Aloha technique, the re-transmission takes place immediately?

A. True
B. False
Answer» C.
13.

As channel capacity increases, channel throughput

A. Increases
B. Decreases
C. Remains the same
D. None of the mentioned
Answer» B. Decreases
14.

Bit stuffing is done by inserting _____, after ____ consecutive ones.

A. Zero, seven
B. Zero, five
C. One, seven
D. One, five
Answer» B. Zero, five
15.

The interface between the ring and the stations are passive.

A. True
B. False
Answer» C.
16.

The maximum packet size of Ethernet is

A. 1426 bytes
B. 1526 bytes
C. 1256 bytes
D. 1626 bytes
Answer» C. 1256 bytes
17.

LAN uses _________ cables.

A. Low bandwidth
B. High bandwidth
C. Low & High bandwidth
D. None of the mentioned
Answer» C. Low & High bandwidth
18.

A local area network can be used to interconnect

A. Computers
B. Terminals
C. Printers
D. All of the mentioned
Answer» E.