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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. | |