MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Networks knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________ |
| A. | piggybacking |
| B. | cyclic redundancy check |
| C. | fletcher’s checksum |
| D. | parity check |
| Answer» B. cyclic redundancy check | |
| 2. |
When 2 or more bits in a data unit has been changed during the transmission, the error is called ____________ |
| A. | random error |
| B. | burst error |
| C. | inverted error |
| D. | double error |
| Answer» C. inverted error | |
| 3. |
The data link layer takes the packets from _________ and encapsulates them into frames for transmission. |
| A. | network layer |
| B. | physical layer |
| C. | transport layer |
| D. | application layer |
| Answer» B. physical layer | |
| 4. |
Home broadband connections that work on DSL (Digital Subscriber Line) use ___ protocol. |
| A. | PPPoE (PPP over Ethernet) |
| B. | PPPoA (PPP over ATM) |
| C. | Bridge protocol |
| D. | All the above |
| Answer» E. | |
| 5. |
The Dial-up connections to access the internet uses ___ protocol. |
| A. | PPP (Point to Point protocol) |
| B. | X.25 protocol |
| C. | PLIP protocol |
| D. | None |
| Answer» B. X.25 protocol | |
| 6. |
Which protocols adopted the standards of HDLC (High-Level Link Control) protocol? |
| A. | X.25 protocol as LAPB (Link Access Procedure Balanced), V.42 protocol as LAPM (Link Access Procedure for Modems) |
| B. | Frame Relay protocol as LAPF (Link Access Procedure for Frame Relay) |
| C. | ISDN (Integrated Services Digital Network) protocol as LAPD (Link Access Procedure on D-channel) |
| D. | All the above |
| Answer» E. | |
| 7. |
Which is the protocol that maps varying IP addresses to the Physical MAC Address of a machine in a LAN network? |
| A. | ARQ (Automatic Repeat Request) |
| B. | ARP (Address Resolution Protocol) |
| C. | SLIP (Serial Line Internet Protocol) |
| D. | PLIP (Parallel Line Internet Protocol) |
| Answer» C. SLIP (Serial Line Internet Protocol) | |
| 8. |
Choose the Protocols used in the Data Link Control layer of OSI model below? |
| A. | SLIP (Serial Line Internet Protocol), CSLIP(Compressed SLIP), PLIP (Parallel Line Internet Protocol) |
| B. | PPP (Point to Point Protocol) |
| C. | X.25, ITU-T G.hn DLL |
| D. | All the above |
| Answer» E. | |
| 9. |
Choose the Protocols working in the Data Link Control Layer of OSI model below. |
| A. | ATM (Asynchronous Transfer Mode), Frame Relay |
| B. | HDLC (High-Level Data Link Control), SDLC (Synchronous Data Link Control) |
| C. | ARP (Address Resolution Protocol), IEEE-802.3 |
| D. | All the above |
| Answer» E. | |
| 10. |
The physical address to each machine is provided by which layer in an OSI reference model? |
| A. | Physical layer |
| B. | Data Link Layer |
| C. | Network Layer |
| D. | Transport Layer |
| Answer» C. Network Layer | |
| 11. |
A Token Ring implementation works on the __ mode. |
| A. | Contention |
| B. | Reservation |
| C. | Round Robin |
| D. | None |
| Answer» D. None | |
| 12. |
The contention mode of MAC implementation is best suited for __ traffic. |
| A. | Low |
| B. | Medium |
| C. | High |
| D. | Very High |
| Answer» B. Medium | |
| 13. |
In a Contention mode of MAC implementation, different stations can have different priorities set by the admin. State TRUE/FALSE. |
| A. | TRUE |
| B. | FALSE |
| C. | - |
| D. | - |
| Answer» B. FALSE | |
| 14. |
In a contention mode of MAC implementation, each station in the network ___ data at the same time whether a collision occurs or not. |
| A. | can transmit |
| B. | can not transmit |
| C. | - |
| D. | - |
| Answer» B. can not transmit | |
| 15. |
In Reservation mode of MAC, each station in the network ___ a time slot for a finite or infinite amount of time to access the shared medium. |
| A. | should reserve |
| B. | need not reserve |
| C. | - |
| D. | - |
| Answer» B. need not reserve | |
| 16. |
In Round-robin mode of MAC, each station gets ___ priority whether access to the medium is needed or not. |
| A. | different |
| B. | equal |
| C. | - |
| D. | - |
| Answer» C. - | |
| 17. |
The modes of a MAC to share a transmission medium are ___. |
| A. | Round Robin |
| B. | Reservation |
| C. | Contention |
| D. | All the above |
| Answer» E. | |
| 18. |
The types of Medium Access Control are ___. |
| A. | Centrally Access Control |
| B. | Distributed Access Control |
| C. | Both option-A and option-B |
| D. | None |
| Answer» D. None | |
| 19. |
Every Computer or an Internet device has a unique MAC address. State TRUE/FALSE. |
| A. | TRUE |
| B. | FALSE |
| C. | - |
| D. | - |
| Answer» B. FALSE | |
| 20. |
Which is the layer that is responsible for sharing the physical media (transmission medium) among many computers or devices? |
| A. | LLC (Logical Link Control) layer |
| B. | MAC (Medium Access Control) layer |
| C. | - |
| D. | - |
| Answer» C. - | |
| 21. |
The types of data services offered by an LLC (Logical Link Control) layer are ___. |
| A. | Connectionless which is fast and unreliable |
| B. | Connection-Oriented which is slow and reliable |
| C. | Both OptionA and optionB. |
| D. | None |
| Answer» D. None | |
| 22. |
The functions of a Logical Link Layer (LLC) are ___. |
| A. | Error control |
| B. | Flow control |
| C. | Creating and managing the communication link between two devices with the help of the Transport layer. |
| D. | All the above |
| Answer» E. | |
| 23. |
Which is the sub-layer that accepts frames from the upper layer that is Network Layer? |
| A. | LLC (Logical Link Control Layer) |
| B. | MAC (Medium Access Control) layer |
| C. | - |
| D. | - |
| Answer» B. MAC (Medium Access Control) layer | |
| 24. |
The two sub-layers of a Data Link layer are ___. |
| A. | LLC - Logical Link Control Layer |
| B. | MAC - Medium Access Control Layer |
| C. | Both A and B |
| D. | Data Layer |
| Answer» D. Data Layer | |
| 25. |
A Data Link Layer converts a packet of data into __ finally. |
| A. | Frames |
| B. | Bits |
| C. | - |
| D. | - |
| Answer» C. - | |
| 26. |
WHICH_ONE_OF_THE_FOLLOWING_IS_THE_MULTIPLE_ACCESS_PROTOCOL_FOR_CHANNEL_ACCESS_CONTROL??$ |
| A. | CSMA/CD |
| B. | CSMA/CA |
| C. | Both CSMA/CD & CSMA/CA |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 27. |
The_technique_of_temporarily_delaying_outgoing_acknowledgements_so_that_they_can_be_hooked_onto_the_next_outgoing_data_frame_is_called$ |
| A. | piggybacking |
| B. | cyclic redundancy check |
| C. | fletcher’s checksum |
| D. | none of the mentioned |
| Answer» B. cyclic redundancy check | |
| 28. |
CRC stands for |
| A. | cyclic redundancy check |
| B. | code repeat check |
| C. | code redundancy check |
| D. | cyclic repeat check |
| Answer» B. code repeat check | |
| 29. |
Which one of the following task is not done by data link layer? |
| A. | framing |
| B. | error control |
| C. | flow control |
| D. | channel coding |
| Answer» E. | |