MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 415 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
A devices that links two homogeneous packet-broadcast local networks, is |
| A. | gateway |
| B. | repeater |
| C. | bridge |
| D. | hub |
| Answer» D. hub | |
| 402. |
Which of the following device is used to connect two systems, especially if the systems use different protocols? |
| A. | hub |
| B. | bridge |
| C. | gateway |
| D. | repeater |
| Answer» D. repeater | |
| 403. |
How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communications with the host? |
| A. | 16 - bits |
| B. | 32 - bits |
| C. | 48 - bits |
| D. | 64 - bits |
| Answer» C. 48 - bits | |
| 404. |
Modem is used in data transmission. When was it invented and in which country? |
| A. | 1963, USA |
| B. | 1965, Germany |
| C. | 1950, USA |
| D. | 1950, Japan |
| Answer» D. 1950, Japan | |
| 405. |
Which of the following condition is used to transmit two packets over a medium at the same time? |
| A. | Contention |
| B. | Collision |
| C. | Synchronous |
| D. | Asynchronous |
| Answer» C. Synchronous | |
| 406. |
Contention is |
| A. | One or more conductors that serve as a common connection for a related group of devices |
| B. | a continuous frequency capable of being modulated or impressed with a second signal |
| C. | the condition when two or more stations attempt to use the same channel at the same time |
| D. | a collection of interconnected functional units that provides a data communications service among stations attached to the network |
| Answer» D. a collection of interconnected functional units that provides a data communications service among stations attached to the network | |
| 407. |
In a synchronous modem, the receive equalizer is known as |
| A. | adaptive equalizer |
| B. | impairment equalizer |
| C. | statistical equalizer |
| D. | compromise equalizer |
| Answer» B. impairment equalizer | |
| 408. |
What is the port number for NNTP? |
| A. | 119 |
| B. | 80 |
| C. | 79 |
| D. | 70 |
| Answer» B. 80 | |
| 409. |
The geostationary satellite used for communication systems |
| A. | rotates with the earth |
| B. | remains stationary relative to the earth |
| C. | is positioned over equator |
| D. | All of the above |
| Answer» E. | |
| 410. |
Most networks are connected to other local area or wide area networks. Select the best fit for answer: |
| A. | Internet works |
| B. | The Internet |
| C. | Internet revolution |
| D. | Internet technologies |
| Answer» B. The Internet | |
| 411. |
The Internet Control Message Protocol (ICMP) |
| A. | allows gateways to send error a control messages to other gateways or hosts |
| B. | provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another |
| C. | reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem |
| D. | All of the above |
| Answer» E. | |
| 412. |
A station in a network forwards incoming packets by placing them on its shortest output queue. What routing algorithm is being used? |
| A. | hot potato routing |
| B. | flooding |
| C. | static routing |
| D. | delta routing |
| Answer» B. flooding | |
| 413. |
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 |
| Answer» C. the probability that one or more errors will be detected when an error detection mechanism is used | |
| 414. |
Carrier is |
| A. | One or more conductors that serve as a common connection for a related group of devices |
| B. | a continuous frequency capable of being modulated or impressed with a second signal |
| C. | the condition when two or more sections attempt to use the same channel at the same time |
| D. | a collection of interconnected functional units that provides a data communications service among stations attached to the network |
| Answer» C. the condition when two or more sections attempt to use the same channel at the same time | |
| 415. |
How many digits of the DNIC (Data Network Identification Code) identify the country? |
| A. | first three |
| B. | first four |
| C. | first five |
| D. | first six |
| Answer» B. first four | |