MCQOPTIONS
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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. |
RAM is used as a short memory because it is |
| A. | Volatile |
| B. | Has small capacity |
| C. | Is very expensive |
| D. | Is programmable |
| E. | None of the above |
| Answer» B. Has small capacity | |
| 2. |
Which is a device that changes information into digital form? |
| A. | Modem |
| B. | Digitizer |
| C. | Mouse |
| D. | Light pen |
| E. | None of the above |
| Answer» C. Mouse | |
| 3. |
An index register that is automatically incremented or decremented with each use is |
| A. | Auto index |
| B. | Asynchronous |
| C. | Assembler |
| D. | Compiler |
| E. | None of the above |
| Answer» B. Asynchronous | |
| 4. |
Communication between computers is almost always |
| A. | serial |
| B. | parallel |
| C. | series parallel |
| D. | direct |
| E. | None of the above |
| Answer» B. parallel | |
| 5. |
Which of the following is considered a broadband communications channel? |
| A. | coaxial cable |
| B. | fiber optic cable |
| C. | microwave circuits |
| D. | satellites systems |
| E. | All of the above |
| Answer» F. | |
| 6. |
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost. |
| A. | P I (K + 1) |
| B. | KIK (1 + F) |
| C. | 1/ (1 - F) |
| D. | K I (K - P) |
| E. | None of the above |
| Answer» D. K I (K - P) | |
| 7. |
The term "remote job entry" relates to |
| A. | batch processing |
| B. | realtime processing |
| C. | transaction processing |
| D. | distributed processing |
| E. | None of the above |
| Answer» B. realtime processing | |
| 8. |
MAC is |
| A. | a method of determining which device has access to the transmission medium at any time |
| B. | a method access control technique or multiple-access transmission media |
| C. | a very common bit-oriented data link protocol issued to ISO. |
| D. | network access standard for connecting stations to a circuit-switched network |
| E. | None of the above |
| Answer» B. a method access control technique or multiple-access transmission media | |
| 9. |
What is the name of the device that converts computer output into a form that can be transmitted over a telephone line? |
| A. | Teleport |
| B. | Modem |
| C. | Multiplexer |
| D. | Concentrator |
| E. | None of the above |
| Answer» C. Multiplexer | |
| 10. |
Which of the following characteristics is not true of NetBEUI? |
| A. | Highly-customizable |
| B. | Routable |
| C. | Little configuration required |
| D. | Fast for small networks to Self-tuning |
| Answer» C. Little configuration required | |
| 11. |
The difference between a multiplexer and a statistical multiplexer is |
| A. | Statistical multiplexers need buffers while multiplexers do not need buffers |
| B. | Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol |
| C. | Multiplexers often waste the output link capacity while statistical multiplexers optimize its use |
| D. | Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM) |
| E. | None of the above |
| Answer» B. Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol | |
| 12. |
The transport layer protocol is connectionless. |
| A. | NVT |
| B. | FTP |
| C. | TCP |
| D. | UDP |
| E. | None of the above |
| Answer» E. None of the above | |
| 13. |
The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are |
| A. | universal accessibility for private network Data Terminal Equipment (DTE) |
| B. | adequate cost control mechanisms for administration of the private networks |
| C. | to assign address to private network DTEs |
| D. | a and b both |
| E. | None of the above |
| Answer» E. None of the above | |
| 14. |
What is the default subnet mask for a class A network? |
| A. | 127.0.0.1 |
| B. | 255.0.0.0 |
| C. | 255.255.255.0.0 |
| D. | 255.255.255.0 |
| E. | None of the above |
| Answer» C. 255.255.255.0.0 | |
| 15. |
Which of the following is a voiceband channel? |
| A. | Telephone line |
| B. | Telegraph line |
| C. | Coaxial cable |
| D. | Microwave systems |
| E. | None of the above |
| Answer» B. Telegraph line | |
| 16. |
HMP (Host Monitoring Protocol) is: |
| A. | a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address |
| B. | a TCP/IP high level protocol for transferring files from one machine to another. |
| C. | a protocol used to monitor computers |
| D. | a protocol that handles error and control messages |
| E. | None of the above |
| Answer» D. a protocol that handles error and control messages | |
| 17. |
The receive equalizer reduces delay distortions using a |
| A. | tapped delay lines |
| B. | gearshift |
| C. | descrambler |
| D. | difference engine |
| E. | None of the above |
| Answer» B. gearshift | |
| 18. |
Four routers have to be interconnected in a point-to-point Network. Each pair of root us may connected by a high-speed line, a medium speed line or a low speed line. Find the total number of topologies. |
| A. | 12 |
| B. | 81 |
| C. | 48 |
| D. | 729 |
| Answer» E. | |
| 19. |
A network consists of eight NT servers. You are planning to move servers to different segments of your network, what utility should be used at each server to determine which server generates the most traffic? |
| A. | NBTSTAT |
| B. | NETSTAT.EXE |
| C. | Performance Monitor |
| D. | Network Monitor |
| E. | ARP.EXE |
| Answer» E. ARP.EXE | |
| 20. |
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission? |
| A. | Interface |
| B. | Modem |
| C. | Attenuation |
| D. | Teleprocessor |
| E. | None of the above |
| Answer» C. Attenuation | |
| 21. |
What is the usual number of bits transmitted simultaneously in parallel data transmission used by microcomputers? |
| A. | 16 |
| B. | 9 |
| C. | 8 |
| D. | 4 |
| E. | None of the above |
| Answer» C. 8 | |
| 22. |
You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 25 hosts and a maximum number of subnets? |
| A. | 255.255.255.192 |
| B. | 255.255.255.224 |
| C. | 255.255.255.240 |
| D. | 255.255.255.248 |
| E. | 255.255.255.252 |
| Answer» C. 255.255.255.240 | |
| 23. |
FDDI is a |
| A. | ring network |
| B. | star network |
| C. | mesh network |
| D. | bus based network |
| E. | None of the above |
| Answer» B. star network | |
| 24. |
An anticipated result from multiprogramming operations is: |
| A. | reduced computer idle time |
| B. | the handling of more jobs |
| C. | better scheduling of work |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 25. |
A central computer surrounded by one or more satellite computers is called a |
| A. | bus network |
| B. | ring network |
| C. | star network |
| D. | All of the above |
| E. | None of the above |
| Answer» D. All of the above | |
| 26. |
A machine that connects to two or more electronic mail systems and transfers mail messages among them is known as |
| A. | Gateways |
| B. | mail gateway |
| C. | bridges |
| D. | User Agent |
| E. | None of the above |
| Answer» C. bridges | |
| 27. |
In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and |
| A. | PC |
| B. | synchronous port |
| C. | crossover cable |
| D. | asynchronous port |
| E. | None of the above |
| Answer» E. None of the above | |
| 28. |
Which of the following communications service provides message preparation and transmission facilities? |
| A. | Teletex |
| B. | Teletext |
| C. | x400 |
| D. | Fax |
| E. | None of the above |
| Answer» B. Teletext | |
| 29. |
Which of the following refers to the terms "residual error rate"? |
| A. | the number of bit errors per twenty four hours of continuous operation on an asynchronous line |
| B. | The probability that one or more errors will be undetected when an error detection scheme is used |
| C. | the probability that one or more errors will be detected when an error detection mechanism is used |
| D. | signal to noise ratio divided by the ratio of energy per bit to noise per hertz |
| E. | None of the above |
| Answer» C. the probability that one or more errors will be detected when an error detection mechanism is used | |
| 30. |
Which of the following summation operations is performed on the bits to check an error-detecting code? |
| A. | Codec |
| B. | Coder-decoder |
| C. | Checksum |
| D. | Attenuation |
| Answer» D. Attenuation | |
| 31. |
The research and development department at your office has been experimenting with different technologies to help improve the performance of the network. One group has been examining the use of a broadband network versus a based band network. Select the correct statement about broadband and baseband. |
| A. | Broadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel |
| B. | Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable |
| C. | Baseband refers to local area networks, and broadband refers to wide area networks. |
| D. | Baseband operates at a standard bit rate, whereas broadband may operate at different rates as needed |
| E. | Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions |
| Answer» C. Baseband refers to local area networks, and broadband refers to wide area networks. | |
| 32. |
The cheapest modems can transmit |
| A. | 300 bits per second |
| B. | 1,200 bits per second |
| C. | 2,400 bits per second |
| D. | 4,800 bits per second |
| E. | None of the above |
| Answer» B. 1,200 bits per second | |
| 33. |
You are working with a network that is 172.16.0.0 and would like to have the maximum number of hosts per subnet. This assumes support for eight subnets. What subnet mask should you use? |
| A. | 255.255.192.0 |
| B. | 255.255.224.0 |
| C. | 255.255.240.0 |
| D. | 255.255.248.0 |
| E. | 255.255.255.0 |
| Answer» D. 255.255.248.0 | |
| 34. |
The transmission signal coding method of TI carrier is called |
| A. | Bipolar |
| B. | NRZ |
| C. | Manchester |
| D. | Binary |
| E. | None of the above |
| Answer» B. NRZ | |
| 35. |
If the ASCII character G is sent and the character D is received, what type of error is this? |
| A. | single-bit |
| B. | multiple-bit |
| C. | burst |
| D. | recoverable |
| Answer» D. recoverable | |
| 36. |
Which layer of OSI determines the interface of the system with the user? |
| A. | Network |
| B. | Application |
| C. | Data-link |
| D. | Session |
| E. | None of the above |
| Answer» C. Data-link | |
| 37. |
Which utility is useful for finding the local host name? |
| A. | NBTSTAT |
| B. | Netstat |
| C. | PING |
| D. | Hostname |
| E. | None of the above |
| Answer» E. None of the above | |
| 38. |
Which of the following conditions is used to transmit two packets over a medium at the same time? |
| A. | Contention |
| B. | Collision |
| C. | Synchronous |
| D. | Asynchronous |
| Answer» C. Synchronous | |
| 39. |
Bandlimited signal is |
| A. | transmission of signals without modulation |
| B. | a signal all of whose energy is contained within a finite frequency range |
| C. | simultaneous transmission of data to a number of stations |
| D. | All of the above |
| E. | None of the above |
| Answer» C. simultaneous transmission of data to a number of stations | |
| 40. |
Computers in a LAN can be interconnected by radio and infrared technologies. |
| A. | Wireless LANs |
| B. | Network Topologies |
| C. | Multiplexer |
| D. | Modem |
| Answer» B. Network Topologies | |
| 41. |
You have a network ID of 134.57.0.0 and you need to divide it into multiple subnets in which at least 600 host IDs for each subnet are available. You desire to have the largest amount of subnets available. Which subnet mask should you assign? |
| A. | 255.255.224.0 |
| B. | 255.255.240.0 |
| C. | 255.255.248.0 |
| D. | 255.255.255.0 |
| E. | 255.255.255.255 |
| Answer» E. 255.255.255.255 | |
| 42. |
Thorough planning must take place when setting up an 802.3 network. A maximum number of segments can separate any two nodes on the network. What is the maximum number of segments allowed between two nodes? |
| A. | Five |
| B. | Two |
| C. | Four |
| D. | Six |
| E. | Three |
| Answer» B. Two | |
| 43. |
Identify the odd term amongst the following group: |
| A. | Coaxial cable |
| B. | Optical fibre |
| C. | Twisted pair wire |
| D. | Microwaves |
| E. | None of the above |
| Answer» E. None of the above | |
| 44. |
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called? |
| A. | Paperless office |
| B. | Electronic mail |
| C. | Global network |
| D. | Electronic newspaper |
| E. | None of the above |
| Answer» C. Global network | |
| 45. |
The physical layer, in reference to the OSI model, defines |
| A. | data link procedures that provide for the exchange of data via frames that can be sent and received |
| B. | the interface between the X.25 network and packet mode device |
| C. | the virtual circuit interface to packet-switched service |
| D. | All of the above |
| E. | None of the above |
| Answer» C. the virtual circuit interface to packet-switched service | |
| 46. |
HDLC (High-level Data Link Control) is |
| A. | a method of determining which device has access to the transmission medium at any time |
| B. | a method access control technique for multiple-access transmission media |
| C. | a very common bit-oriented data link protocol issued by ISO. |
| D. | network access standard for connecting stations to a circuit-switched network |
| E. | None of the above |
| Answer» D. network access standard for connecting stations to a circuit-switched network | |
| 47. |
A required characteristic of an online real-time system is: |
| A. | more than one CPU |
| B. | offline batch processing |
| C. | no delay in processing |
| D. | All of the above |
| E. | None of the above |
| Answer» D. All of the above | |
| 48. |
How many class A, B, and C network IDs can exist? |
| A. | 2,113,658 |
| B. | 16,382 |
| C. | 126 |
| D. | 128 |
| E. | None of the above |
| Answer» B. 16,382 | |
| 49. |
Which of the following characteristic(s) is/are suited to the PSS applications? |
| A. | bursty traffic and low communications intensity |
| B. | widely dispersed terminals and access to international packets switched services |
| C. | Multiple remote host or applications accessed by a single local access circuit terminal and circuit |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 50. |
Because the configuration infor-mation for a DHCP client is received dynamically, you must use which utility to read the current configuration to verify the settings? |
| A. | PING |
| B. | TRACERT |
| C. | ARP |
| D. | IPCONFIG |
| E. | None of the above |
| Answer» E. None of the above | |