MCQOPTIONS
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MCQOPTIONS
This section includes 84 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the effect on power if the distance between the sidebands and center frequency increases? |
| A. | power decreases |
| B. | power increases |
| C. | power remains same |
| D. | power becomes twice of its previous value |
| Answer» B. power increases | |
| 2. |
Signal to noise ratio of a frequency modulated system is better than amplitude modulated system. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
FM stereo _________ |
| A. | is implemented using an SCA signal |
| B. | has a higher signal to noise ratio than mono FM |
| C. | is not compatible with mono FM |
| D. | uses DSBSC AM modulation |
| Answer» E. | |
| 4. |
In Circuit Switching, the resources needs to be reserved during the |
| A. | Data transfer phase |
| B. | teardown phase. |
| C. | setup phase |
| D. | propagation phase |
| Answer» D. propagation phase | |
| 5. |
Virtual-Circuit Networks and datagram networks are the sub categories of |
| A. | message-switched networks |
| B. | Packet-switched networks |
| C. | Circuit-Switched Networks |
| D. | None of them |
| Answer» C. Circuit-Switched Networks | |
| 6. |
The phase where the establishment of the channels takes place is |
| A. | setup phase |
| B. | Data transfer phase |
| C. | teardown phase |
| D. | Both a and b |
| Answer» C. teardown phase | |
| 7. |
Datagram switching is done at the |
| A. | network layer |
| B. | physical layer |
| C. | session layer |
| D. | data link layer |
| Answer» B. physical layer | |
| 8. |
Only one packet for each destination is allowed at each tick; if there is more than one, they wait for the next tick in |
| A. | Banyan switch |
| B. | Batcher-banyan switch |
| C. | crossbar switch |
| D. | time-space-time switch |
| Answer» C. crossbar switch | |
| 9. |
The Asynchronous Transfer Mode (ATM) network is an example of |
| A. | Packet switching network |
| B. | Datagram Networks |
| C. | Virtual circuit network |
| D. | message switched network |
| Answer» D. message switched network | |
| 10. |
The network where there is no resource reservation is called |
| A. | Circuit-Switched Networks |
| B. | message-switched networks |
| C. | Packet-switched networks |
| D. | satellite network |
| Answer» D. satellite network | |
| 11. |
The identifier that is actually used for data transfer is called the |
| A. | virtual-circuit identifier |
| B. | global address |
| C. | local address |
| D. | header |
| Answer» B. global address | |
| 12. |
A switch in a datagram network uses a routing table that is based on the |
| A. | source addresses |
| B. | port addresses |
| C. | destination address |
| D. | None |
| Answer» D. None | |
| 13. |
Circuit Switched Networks are used in |
| A. | cellular network |
| B. | satellite network |
| C. | Cable network |
| D. | telephone network |
| Answer» E. | |
| 14. |
In a packet-switched network, resources are allocated |
| A. | randomly |
| B. | on demand |
| C. | reserved already |
| D. | both a and c |
| Answer» C. reserved already | |
| 15. |
Time Division Multiplexing inside a switch, is used by |
| A. | Space division switch |
| B. | crossbar switch |
| C. | packet switch |
| D. | time division switch |
| Answer» E. | |
| 16. |
A switched network consists of a series of interlinked nodes, called |
| A. | endpoints |
| B. | packets |
| C. | switches |
| D. | links |
| Answer» D. links | |
| 17. |
The actual communication in a circuit-switched network requires |
| A. | one phase |
| B. | two phases |
| C. | three phases |
| D. | four phases |
| Answer» D. four phases | |
| 18. |
A circuit-switched network is made of switches connected by physical links, in which each link is divided into |
| A. | n channels |
| B. | n+1 channels |
| C. | 2n channels |
| D. | n-1 channels |
| Answer» B. n+1 channels | |
| 19. |
Three methods of switching are |
| A. | circuit switching, packet switching, and protocol switching |
| B. | circuit switching, packet switching, and message switching |
| C. | Loop switching, packet switching, and message switching |
| D. | Node switching, packet switching, and message switching |
| Answer» C. Loop switching, packet switching, and message switching | |
| 20. |
The term that refers the switch does not keep information about the connection state, is |
| A. | connection setup |
| B. | connectionless |
| C. | switchless |
| D. | teardown |
| Answer» C. switchless | |
| 21. |
Global and local addressing are types of |
| A. | WAN network |
| B. | local area circuit network |
| C. | virtual-circuit network |
| D. | MAN network |
| Answer» D. MAN network | |
| 22. |
A switch that connects n inputs to m outputs in a grid, using electronic micro switches at each cross point is called |
| A. | crossbar |
| B. | crosspoint |
| C. | multistage |
| D. | onstage |
| Answer» B. crosspoint | |
| 23. |
The port that performs the physical and data link functions of the packet switch is called |
| A. | input port |
| B. | output port |
| C. | routing port |
| D. | switching fabric |
| Answer» B. output port | |
| 24. |
Switching in the Internet is done by using the datagram approach to packet switching at the |
| A. | network layer |
| B. | application layer |
| C. | data link layer |
| D. | physical layer. |
| Answer» B. application layer | |
| 25. |
A Virtual-Circuit Network (VCN) is normally implemented in the |
| A. | session layer |
| B. | data link layer |
| C. | network layer |
| D. | physical layer |
| Answer» C. network layer | |
| 26. |
The routing processor searching for the routing table is called |
| A. | switch fabric |
| B. | buffer |
| C. | table lookup |
| D. | rolling table |
| Answer» D. rolling table | |
| 27. |
Which frame completes the entries in the switching tables |
| A. | acknowledgment frame |
| B. | setup frame |
| C. | routing frame |
| D. | None |
| Answer» B. setup frame | |
| 28. |
The ................. of A TSI controls the order of delivering of slot values that are stored in RAM. |
| A. | cross bar |
| B. | cross point |
| C. | control unit |
| D. | transceiver |
| Answer» E. | |
| 29. |
In ................, each packet of a message need not follow the same path from sender to receiver. |
| A. | circuit switching |
| B. | message switching |
| C. | virtual approach to packet switching |
| D. | datagram approach to packet switching |
| Answer» E. | |
| 30. |
A permanent virtual circuit involves ................. |
| A. | Connection establishment |
| B. | Data transfer |
| C. | Connection release |
| D. | Connection check |
| Answer» C. Connection release | |
| 31. |
In a time division switch, a .................. governs the destination of a packet stored in RAM. |
| A. | TDM bus |
| B. | cross bar |
| C. | cross point |
| D. | control unit |
| Answer» E. | |
| 32. |
In ..................... each packet of a message need not follow the same path From sender to receiver. |
| A. | Circuit switching |
| B. | message switching |
| C. | a virtual approach to packet switching |
| D. | The datagram approach to packet switching |
| Answer» E. | |
| 33. |
In .................., each packet of a message follows the same path from sender to receiver. |
| A. | circuit switching |
| B. | message switching |
| C. | virtual approach to packet switching |
| D. | datagram approach to packet switching |
| Answer» B. message switching | |
| 34. |
How many cross points are needed in a single stage switch with 40 inputs and 50 outputs. |
| A. | 40 |
| B. | 50 |
| C. | 90 |
| D. | 2000 |
| Answer» E. | |
| 35. |
Which type of switching uses the entire capacity of a dedicated link? |
| A. | circuit switching |
| B. | datagram packet switching |
| C. | virtual circuit packet switching |
| D. | message switching |
| Answer» E. | |
| 36. |
In ............... circuit switching, delivery of data is delayed because data must be stored and retrieved from RAM. |
| A. | space division |
| B. | time division |
| C. | virtual |
| D. | None of these |
| Answer» C. virtual | |
| 37. |
In which type of switching do all the datagrams of a message follow the same channels of a path? |
| A. | circuit switching |
| B. | datagram packet switching |
| C. | virtual circuit packet switching |
| D. | message switching |
| Answer» D. message switching | |
| 38. |
Type of switching which uses the entire capacity of a dedicated link? |
| A. | Circuit switching |
| B. | datagram packet switching |
| C. | virtual circuit packet switching |
| D. | Message switching |
| Answer» B. datagram packet switching | |
| 39. |
The ................... is a device that connects n inputs to m outputs. |
| A. | cross point |
| B. | cross bar |
| C. | modem |
| D. | RAM |
| Answer» C. modem | |
| 40. |
In a ________ network, two types of addressing are involved: global and local. |
| A. | virtual-circuit |
| B. | datagram |
| C. | circuit-switched |
| D. | none of the above |
| Answer» B. datagram | |
| 41. |
The PSTN is an example of ................. network. |
| A. | packet-switched |
| B. | circuit-switched |
| C. | message-switched |
| D. | TSI |
| Answer» C. message-switched | |
| 42. |
A switched WAN is normally implemented as a _______ network. |
| A. | virtual-circuit |
| B. | datagram |
| C. | circuit-switched |
| D. | none of the above |
| Answer» B. datagram | |
| 43. |
A switch in a datagram network uses a routing table that is based on the ______ address. |
| A. | source |
| B. | destination |
| C. | local |
| D. | none of the above |
| Answer» C. local | |
| 44. |
An example of a medium speed, switched communications service is ................. |
| A. | series 1000 |
| B. | data phone 50 |
| C. | DDD |
| D. | All of the above |
| Answer» D. All of the above | |
| 45. |
The _______ address in the header of a packet in a datagram network normally remains the same during the entire journey of the packet. |
| A. | source |
| B. | destination |
| C. | local |
| D. | none of the above |
| Answer» C. local | |
| 46. |
A ________ switch combines crossbar switches in several (normally three) stages. |
| A. | multistage |
| B. | multiple crossbar |
| C. | multiple path |
| D. | none of the above |
| Answer» B. multiple crossbar | |
| 47. |
In a banyan switch, for 8 inputs and 8 outputs, we have _____ microswitches at each stage. |
| A. | 8 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 48. |
In a one-stage space division switch, if N = 200, the number of crosspoints is ______. |
| A. | 10,000 |
| B. | 20,000 |
| C. | 40,000 |
| D. | 30,000 |
| Answer» D. 30,000 | |
| 49. |
In a three-stage space division switch, if N = 200, the number of crosspoints is ______. |
| A. | 40,000 |
| B. | greater than 40,000 |
| C. | less than 40,000 |
| D. | greater than 100,000 |
| Answer» D. greater than 100,000 | |
| 50. |
A ________ switch combines space-division and time-division technologies to take advantage of the best of both. |
| A. | TST |
| B. | SSS |
| C. | TTT |
| D. | none of the above |
| Answer» B. SSS | |