MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The protocol that is used in the signaling network is called |
| A. | signal transport ports |
| B. | signaling network |
| C. | Signaling System Seven |
| D. | service control point |
| Answer» D. service control point | |
| 2. |
Find the bandwidth for the AM if we need to modulate a 5-KHz voice |
| A. | 10 KHz |
| B. | 20 KHz |
| C. | 30 KHz |
| D. | 40 KHz |
| Answer» B. 20 KHz | |
| 3. |
The theoretical downstream data rate is |
| A. | 10 Mbps |
| B. | 20 Mbps |
| C. | 30 Mbps |
| D. | 40 Mbps |
| Answer» D. 40 Mbps | |
| 4. |
The effective bandwidth of a telephone line being used for data transmission is |
| A. | 30 Hz |
| B. | 300Hz |
| C. | 600Hz |
| D. | 2400Hz |
| Answer» E. | |
| 5. |
The loss in signal power as light travels down the fiber is called ............... |
| A. | attenuation |
| B. | propagation |
| C. | scattering |
| D. | interruption |
| Answer» B. propagation | |
| 6. |
Avalanche photodiode receivers can detect bits of transmitted data by receiving |
| A. | 100 photons |
| B. | 200 photons |
| C. | 2000 photons |
| D. | 300 photons |
| Answer» C. 2000 photons | |
| 7. |
Which ISDN plane is associated with signaling another D channel? |
| A. | user |
| B. | control |
| C. | management |
| D. | supervise |
| Answer» B. control | |
| 8. |
Multipath fading .................. the signal. |
| A. | enhances |
| B. | adds to |
| C. | cancels |
| D. | maximizes |
| Answer» D. maximizes | |
| 9. |
A television broadcast is an example of ....................... transmission. |
| A. | Simplex |
| B. | half-duplex |
| C. | full-duplex |
| D. | automatic |
| Answer» B. half-duplex | |
| 10. |
Which of the following is considered a broad band communication channel? |
| A. | coaxial cable |
| B. | fiber optics cable |
| C. | microwave circuits |
| D. | all of the above |
| Answer» E. | |
| 11. |
Which of the following is not a transmission medium? |
| A. | telephone lines |
| B. | coaxial cables |
| C. | modem |
| D. | microwave systems |
| Answer» D. microwave systems | |
| 12. |
In ................... transmission, the channel capacity is shared by both communicating devices at all times. |
| A. | simplex |
| B. | half-duplex |
| C. | full-duplex |
| D. | automatic |
| Answer» D. automatic | |
| 13. |
The receive equalizer reduces delay distortions using a ............... |
| A. | tapped delay lines |
| B. | gearshift |
| C. | descrambler |
| D. | difference engine |
| Answer» B. gearshift | |
| 14. |
In computer, communication media includes |
| A. | standard telephone lines |
| B. | coaxial cables |
| C. | microwave transmission |
| D. | all of these |
| Answer» E. | |
| 15. |
................. is a measure of how much the strength of the signal is reduced in passing through a medium. |
| A. | Attenuation |
| B. | Amplification |
| C. | Bandwidth |
| D. | Frequency |
| Answer» B. Amplification | |
| 16. |
In Discrete Multitone Technique (DMT), Channel 1-5 is used for |
| A. | idle position |
| B. | voice communication |
| C. | data communication |
| D. | error detection |
| Answer» B. voice communication | |
| 17. |
In OOOVBOVB, V stands for violation and B stands for |
| A. | Bit |
| B. | Baud |
| C. | Bandwidth |
| D. | Bipolm |
| Answer» E. | |
| 18. |
A switch connects several local loops or trunks and allows a connection between different |
| A. | switches |
| B. | loops |
| C. | trunks |
| D. | subscribers |
| Answer» E. | |
| 19. |
The omnidirectional antennas send out signals in |
| A. | one direction |
| B. | 2 directions |
| C. | no direction |
| D. | all directions |
| Answer» E. | |
| 20. |
In a constellation diagram, a signal element type is represented as a |
| A. | Dot |
| B. | line |
| C. | x component |
| D. | y component |
| Answer» B. line | |
| 21. |
The distance of the Symmetric Digital Subscriber Line (SDSL) is |
| A. | 18000 |
| B. | 12000 |
| C. | 10000 |
| D. | 30000 |
| Answer» C. 10000 | |
| 22. |
The agreement between the communicating devices are called |
| A. | Data |
| B. | Message |
| C. | Protocol |
| D. | Transmission Medium |
| Answer» D. Transmission Medium | |
| 23. |
The term that refers to as mBlnB coding, it replaces each m bit group with an n bit group is called |
| A. | Multilevel technique |
| B. | Polar techniques |
| C. | Scrambling technique |
| D. | block coding scheme |
| Answer» E. | |
| 24. |
The example of an analog to analog conversion is |
| A. | radio |
| B. | Video |
| C. | Television |
| D. | internet |
| Answer» B. Video | |
| 25. |
Hybrid network includes combination of |
| A. | Nodes |
| B. | Devices |
| C. | topologies |
| D. | None of the above |
| Answer» D. None of the above | |
| 26. |
The term that means data is sent over four wires at the same time is |
| A. | 4S |
| B. | 4D |
| C. | 4W |
| D. | 4R |
| Answer» C. 4W | |
| 27. |
The 8BIlOB block coding is a combination of |
| A. | 5B/6B and 3B/3B |
| B. | 5B/6B and 3B/4B |
| C. | 5B/6B and 4B/4B |
| D. | 4B/5B and 3B/4B |
| Answer» C. 5B/6B and 4B/4B | |
| 28. |
Parallel transmission is good in speed but it is very |
| A. | cheap |
| B. | costly |
| C. | time consuming |
| D. | Both b and c |
| Answer» C. time consuming | |
| 29. |
Microwaves transmission, coaxial cables and fiber optics are examples of |
| A. | modems |
| B. | routers |
| C. | transmission media |
| D. | ring networks |
| Answer» D. ring networks | |
| 30. |
Which of the following severally affects the quality of satellite transmission? |
| A. | bad weather |
| B. | mountains |
| C. | light rays |
| D. | Moon |
| Answer» B. mountains | |
| 31. |
Path through which computer data is transmitted from one place to another is called |
| A. | communication media |
| B. | transmission media |
| C. | channel |
| D. | all of these |
| Answer» E. | |
| 32. |
Important property of fiber optic cable is |
| A. | noise |
| B. | reflection |
| C. | interference |
| D. | attenuation |
| Answer» C. interference | |
| 33. |
The telephone network is made of ______ major components. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 34. |
Time taken by a computer data signal to reach to moon and then back to earth is about |
| A. | 2 minutes |
| B. | 2 seconds |
| C. | 2 ms |
| D. | 2 hours |
| Answer» C. 2 ms | |
| 35. |
Cable which is comprised of two separate insulated copper wires that are twisted together is called |
| A. | fiber optics |
| B. | twisted pair cable |
| C. | microwave |
| D. | coaxial cable |
| Answer» C. microwave | |
| 36. |
Communication medium which requires line-of-sight is |
| A. | microwave |
| B. | fiber optic cable |
| C. | twisted pair cable |
| D. | coaxial cable |
| Answer» B. fiber optic cable | |
| 37. |
Which of the following is not a communication media? |
| A. | twisted pair |
| B. | UTP |
| C. | microwave |
| D. | modem |
| Answer» E. | |
| 38. |
The B-channel is capable of carrying both |
| A. | Voice |
| B. | Data |
| C. | Both a & b |
| D. | None of these |
| Answer» D. None of these | |
| 39. |
Transmission media which consists of thin glass to transmit beams of light is |
| A. | twisted pair |
| B. | coaxial cable |
| C. | fiber optics cable |
| D. | satellite |
| Answer» D. satellite | |
| 40. |
The second generation of cable networks is called a(n) _________ network. |
| A. | HFC |
| B. | HCF |
| C. | CFH |
| D. | none of the above |
| Answer» B. HCF | |
| 41. |
The traditional cable TV system used ________cable end to end. |
| A. | twisted-pair |
| B. | coaxial |
| C. | fiber-optic |
| D. | none of the above |
| Answer» C. fiber-optic | |
| 42. |
To use a cable network for data transmission, we need two key devices: a ______ and a _________. |
| A. | CM; CMS |
| B. | CT; CMTS |
| C. | CM; CMTS |
| D. | none of the above |
| Answer» D. none of the above | |
| 43. |
The two most common digital services are ________ service and ______. |
| A. | switched/56; switched/64 |
| B. | switched/56; DDS |
| C. | DDS; swiched 64 |
| D. | leased; out-of-band |
| Answer» C. DDS; swiched 64 | |
| 44. |
The HFC network uses _______ cable. |
| A. | twisted-pair |
| B. | coaxial |
| C. | fiber-optic |
| D. | a combination of (b) and (c) |
| Answer» E. | |
| 45. |
Telephone companies provide two types of analog services: analog _______ services and analog _____services. |
| A. | switched; in-band |
| B. | out-of-band; in-band |
| C. | switched; leased |
| D. | leased; out-of-band |
| Answer» D. leased; out-of-band | |
| 46. |
______technology is a set of technologies develpoed by the telephone companies to provide high data rate transmission. |
| A. | ASL |
| B. | DSL |
| C. | LDS |
| D. | none of the above |
| Answer» C. LDS | |
| 47. |
Most popular modems available are based on the ________standards. |
| A. | V-series |
| B. | X-series |
| C. | VX-series |
| D. | none of the above |
| Answer» B. X-series | |
| 48. |
The term modem is a composite word that refers to the two functional entities that make up the device: a signal _______ and a signal _______. |
| A. | modulator; demodulator |
| B. | demodulator; modulator |
| C. | modern; demo |
| D. | none of the above |
| Answer» B. demodulator; modulator | |
| 49. |
_______ is suitable for businesses that require comparable upstream and downstream data rates. |
| A. | VDSL |
| B. | ADSL |
| C. | SDSL |
| D. | both (a) and (b) |
| Answer» D. both (a) and (b) | |
| 50. |
This is ordinary telephone twisted pair wire, one of several physical media specified in the IEEE 802.3 standard for Ethernet local area networks (LANs). |
| A. | 10BASE-T |
| B. | 10BASE-F |
| C. | 5BASE-T |
| D. | 100BASE-T |
| Answer» B. 10BASE-F | |