MCQOPTIONS
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MCQOPTIONS
This section includes 310 Mcqs, each offering curated multiple-choice questions to sharpen your Networking knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In representation of text symbols, each set of the bit pattern is called |
| A. | Code |
| B. | Unicode |
| C. | Coding |
| D. | sequence |
| Answer» B. Unicode | |
| 2. |
Transmission media are directly controlled by the |
| A. | physical layer |
| B. | data link layer |
| C. | network layer |
| D. | session layer |
| Answer» B. data link layer | |
| 3. |
What would be the minimum bandwidth of Manchester and differential Manchester? |
| A. | 4 times that of NRZ |
| B. | 4times that of RZ |
| C. | 2times that of NRZ |
| D. | 8times that of RZ |
| Answer» D. 8times that of RZ | |
| 4. |
Baseline wandering is prevented by the |
| A. | Scrambling technique |
| B. | block coding scheme |
| C. | Line coding scheme |
| D. | None of the above |
| Answer» D. None of the above | |
| 5. |
In 8B6T, each signal pattern has a weight of 0 or |
| A. | 1 |
| B. | -1 |
| C. | -2 |
| D. | infinity |
| Answer» B. -1 | |
| 6. |
Which technique is always needed in digital to digital conversion |
| A. | Scrambling |
| B. | Block coding |
| C. | Line coding |
| D. | both b and c |
| Answer» D. both b and c | |
| 7. |
The long-distance communication using electric signals was started with the invention of the telegraph by Morse in |
| A. | 19th century |
| B. | 18th century |
| C. | 20th century |
| D. | middle of 18 and 19 century |
| Answer» B. 18th century | |
| 8. |
In asynchronous transmission, we send one start bit that is |
| A. | 0 |
| B. | 1 |
| C. | 10 |
| D. | 11 |
| Answer» B. 1 | |
| 9. |
The extra bit in modem is used for |
| A. | error correction |
| B. | error detection |
| C. | noise |
| D. | distortion |
| Answer» C. noise | |
| 10. |
The last step in Pulse Code Modulation (PCM) is |
| A. | Quantization |
| B. | Sampling |
| C. | Encoding |
| D. | Modulation |
| Answer» D. Modulation | |
| 11. |
In synchronous transmission, we send bits one after the another without |
| A. | Start bit |
| B. | Stop bit |
| C. | gap bit |
| D. | All of the above |
| Answer» E. | |
| 12. |
The relationship between data rate and signal rate depends on the value of |
| A. | data rate (N) |
| B. | case factor (c) |
| C. | ratio ( r ) |
| D. | signal element(s) |
| Answer» D. signal element(s) | |
| 13. |
In the electromagnetic spectrum for wireless communication, the reserved range for Radio waves and microwaves is known as |
| A. | ground propagation |
| B. | sky propagation |
| C. | line-of-sight propagation |
| D. | None |
| Answer» B. sky propagation | |
| 14. |
Microwaves having frequency between |
| A. | I and 300 GHz |
| B. | 3 kHz and 1 GHz |
| C. | 300 kHz and 1 GHz |
| D. | 1GHz and 300 GHz |
| Answer» B. 3 kHz and 1 GHz | |
| 15. |
The bandwidth of analog switched service in between |
| A. | 300 and 3300 Hz |
| B. | 0 and 4000 Hz |
| C. | 600 to 3000 Hz |
| D. | 2400Hz |
| Answer» C. 600 to 3000 Hz | |
| 16. |
Omni directional waves are propagated in |
| A. | one direction |
| B. | all directions |
| C. | depends on situation |
| D. | both a and c |
| Answer» C. depends on situation | |
| 17. |
In Signaling System Seven (SS7), the transport layer of OSI model is equivalent to |
| A. | SCCP |
| B. | TUP |
| C. | TCAP |
| D. | ISUP |
| Answer» B. TUP | |
| 18. |
When Amplitude Shift Keying (ASK) is implemented using only two levels then it is called |
| A. | Half Duplex ASK |
| B. | Multilevel ASK |
| C. | Binary ASK |
| D. | Duplex ASK |
| Answer» D. Duplex ASK | |
| 19. |
The transmission mode in which multiple bits are sent with each clock trick is |
| A. | Parallel |
| B. | serial |
| C. | synchronous |
| D. | Asynchronous |
| Answer» B. serial | |
| 20. |
A signal that is the result of a conversion of data from another form is known as |
| A. | transmission medium |
| B. | data |
| C. | information |
| D. | communication |
| Answer» D. communication | |
| 21. |
The Quadrature Amplitude Modulation (QAM) has the same advantages as |
| A. | ASK and FSK |
| B. | ASK and PSK |
| C. | FSK and PSK |
| D. | None of the above |
| Answer» C. FSK and PSK | |
| 22. |
The coding scheme that was designed to be used in combination with None Return to Zero- Invert (NRZ-I) is |
| A. | BSZS |
| B. | 8RIlOR |
| C. | 4D/5D |
| D. | R8ZS |
| Answer» D. R8ZS | |
| 23. |
Bipolar with S-Zero Substitution (BSZS) is commonly used in |
| A. | South America |
| B. | Central America |
| C. | North America |
| D. | Latin America |
| Answer» D. Latin America | |
| 24. |
If the delta is positive, the modulator process records |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | infinity |
| Answer» C. -1 | |
| 25. |
The type of signaling that have the same circuit and is used for both signaling and voice communication is called |
| A. | out-band |
| B. | in-band |
| C. | signal transport ports |
| D. | signal points |
| Answer» C. signal transport ports | |
| 26. |
B8ZS substitutes eight consecutive zeros with |
| A. | OOOVB1VB |
| B. | OOOVBOVB |
| C. | 111VBOVB |
| D. | O1OVBOVB |
| Answer» C. 111VBOVB | |
| 27. |
Radio waves are |
| A. | unidirectional |
| B. | omnidirectional |
| C. | bidirectional |
| D. | directional |
| Answer» C. bidirectional | |
| 28. |
In telecommunications, transmission media can be divided into |
| A. | four broad categories |
| B. | three broad categories |
| C. | two broad categories |
| D. | None |
| Answer» D. None | |
| 29. |
HFC stands for |
| A. | High Fiber cable |
| B. | High Frequency Cable |
| C. | Hybrid Fiber-Coaxial |
| D. | Hybrid Frequency Cable |
| Answer» D. Hybrid Frequency Cable | |
| 30. |
Communication in the traditional cable TV network is |
| A. | bidirectional |
| B. | unidirectional. |
| C. | omnidirectional |
| D. | None |
| Answer» C. omnidirectional | |
| 31. |
The parameter that refers to uneven delay of data packets in the delivery is |
| A. | Jitter |
| B. | Timelessness |
| C. | Accuracy |
| D. | Transmission medium |
| Answer» B. Timelessness | |
| 32. |
HDB3 substitutes four consecutive zeros with OOOV or BOOV depending on the number of nonzero pulses after |
| A. | middle substitution |
| B. | first substitution |
| C. | last substitution |
| D. | both b and c |
| Answer» D. both b and c | |
| 33. |
The term that is used as an alternative to None Return to Zero (NRZ) is |
| A. | Polar |
| B. | Unipolar |
| C. | multi transition |
| D. | bipolar |
| Answer» E. | |
| 34. |
Keyboard and traditional monitors are examples of |
| A. | Simplex devices |
| B. | Duplex devices |
| C. | Half Duplex devices |
| D. | Full Duplex devices |
| Answer» B. Duplex devices | |
| 35. |
The modulation technique that has become standard for Asymmetric Digital Subscriber Line (ADSL) is called the |
| A. | discrete multitoned technique |
| B. | adaptive technique |
| C. | quantity asynchronous modulation |
| D. | Frequency modulation |
| Answer» B. adaptive technique | |
| 36. |
The upstream data bandwidth is |
| A. | 41 MHz |
| B. | 37 MHz |
| C. | 12 MHz |
| D. | 30 MHz |
| Answer» C. 12 MHz | |
| 37. |
A constellation diagram can help us to define the signal's |
| A. | Frequency and amplitude |
| B. | amplitude and phase |
| C. | amplitude and frequency |
| D. | Frequency and phase |
| Answer» C. amplitude and frequency | |
| 38. |
7/125 is the fiber type used in propagation mode: |
| A. | single mode |
| B. | multimode |
| C. | multimode, step index |
| D. | multimode, graded index |
| Answer» B. multimode | |
| 39. |
The High-bit-rate Digital Subscriber Line (HDSL) was designed as an alternative to |
| A. | ADSL |
| B. | T-1line |
| C. | DSL |
| D. | DMT |
| Answer» C. DSL | |
| 40. |
Wireless communication started in |
| A. | 1869 |
| B. | 1895 |
| C. | 1879 |
| D. | 1885 |
| Answer» C. 1879 | |
| 41. |
NRZ-L and NRZ-I both have an average signal rate of |
| A. | N |
| B. | N/8 |
| C. | N/4 |
| D. | N/2 |
| Answer» C. N/4 | |
| 42. |
Which of the following is not guided as computer communication media? |
| A. | twisted pair cables |
| B. | fiber optic cables |
| C. | coaxial cables |
| D. | satellite |
| Answer» E. | |
| 43. |
The average signal rate of 2BlQ is |
| A. | N |
| B. | N/2 |
| C. | N/4 |
| D. | N/6 |
| Answer» D. N/6 | |
| 44. |
The mode in which each station can send and receive data but not at the same time is called |
| A. | Half Duplex |
| B. | Simplex |
| C. | Full Duplex |
| D. | Duplex |
| Answer» B. Simplex | |
| 45. |
The High-bit-rate Digital Subscriber Line (HDSL) uses two twisted pairs to achieve |
| A. | full-duplex transmission |
| B. | half-duplex transmission |
| C. | decoding |
| D. | encoding |
| Answer» B. half-duplex transmission | |
| 46. |
The minimum bandwidth of Manchester and differential Manchester is |
| A. | 2 times that of NRZ |
| B. | 2 times that of NRZ-L |
| C. | 2 times that of NRZ-I |
| D. | 2 times that of RZ |
| Answer» B. 2 times that of NRZ-L | |
| 47. |
The transmission that is used without the timing signal is called |
| A. | synchronous |
| B. | asynchronous |
| C. | parallel |
| D. | isochronous |
| Answer» C. parallel | |
| 48. |
The standard V92 can upload data at the rate of |
| A. | 144 kbps |
| B. | 33.6 kbps |
| C. | 48 kbps |
| D. | 56 kbps |
| Answer» D. 56 kbps | |
| 49. |
Transmission media which can be used in LAN is |
| A. | satellite |
| B. | microwave |
| C. | coaxial cable |
| D. | fiber optics |
| Answer» D. fiber optics | |
| 50. |
Line-of-sight propagation lies above |
| A. | 3 KHz |
| B. | 30 MHz |
| C. | 15 MHz |
| D. | 2 KHz |
| Answer» C. 15 MHz | |