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MCQOPTIONS
This section includes 216 Mcqs, each offering curated multiple-choice questions to sharpen your Bachelor of Sc in Information Technology knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Find parity bit for 1001011 |
| A. | 0. |
| B. | 1. |
| C. | 2. |
| D. | none. |
| Answer» B. 1. | |
| 152. |
In block coding, we divide our message into blocks, is called |
| A. | code blocks. |
| B. | packet blocks. |
| C. | code words. |
| D. | datawords. |
| Answer» E. | |
| 153. |
To guarantee detection of up to s errors in all cases, minimum hamming distance in a block code must be |
| A. | s. |
| B. | s+1. |
| C. | s-1. |
| D. | 0. |
| Answer» C. s-1. | |
| 154. |
How many bits in data unit has changed in single bit error |
| A. | only 1. |
| B. | two bits. |
| C. | three bits. |
| D. | four bits. |
| Answer» B. two bits. | |
| 155. |
Two computers connected by an Ethernet hub are of |
| A. | lan topology. |
| B. | man topology. |
| C. | wan topology. |
| D. | intranet. |
| Answer» B. man topology. | |
| 156. |
Five components that make up a data communications system are message, sender, receiver, and |
| A. | protocol. |
| B. | medium. |
| C. | connecting device. |
| D. | both a and b. |
| Answer» E. | |
| 157. |
Agreement between communicating devices are called |
| A. | none of the mentioned |
| B. | message. |
| C. | protocol. |
| D. | transmission medium. |
| Answer» D. transmission medium. | |
| 158. |
Mode that is like a two way street with traffic flowing in both direction simultaneously is |
| A. | simplex. |
| B. | full duplex. |
| C. | half duplex. |
| D. | none of above. |
| Answer» C. half duplex. | |
| 159. |
When system delivers data accurately then it is called |
| A. | accuracy. |
| B. | delivery. |
| C. | jitter. |
| D. | timelessness. |
| Answer» C. jitter. | |
| 160. |
Data communications are transfer of data through some |
| A. | transmission medium. |
| B. | linear medium. |
| C. | network lan. |
| D. | protocols. |
| Answer» B. linear medium. | |
| 161. |
Each set of bit pattern is called |
| A. | code. |
| B. | unicode. |
| C. | coding. |
| D. | ascii. |
| Answer» B. unicode. | |
| 162. |
Parameter that refers to recording and broadcasting of picture is |
| A. | text. |
| B. | audio. |
| C. | image. |
| D. | video. |
| Answer» E. | |
| 163. |
Term that is used to compose matrix of pixel is |
| A. | number. |
| B. | image. |
| C. | video. |
| D. | audio. |
| Answer» C. video. | |
| 164. |
Analog-to-analog conversion can be accomplished in |
| A. | one way. |
| B. | three ways. |
| C. | two ways. |
| D. | four ways. |
| Answer» C. two ways. | |
| 165. |
Total bandwidth required for Amplitude Modulation (AM) is |
| A. | 2 |
| B. | 2(1 + ? )b.. |
| C. | 2l. |
| D. | 2f. |
| Answer» B. 2(1 + ? )b.. | |
| 166. |
Example of an analog to analog conversion is |
| A. | radio. |
| B. | video. |
| C. | television. |
| D. | internet. |
| Answer» B. video. | |
| 167. |
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. | |
| 168. |
Multilevel Amplitude Shift Keying (MASK) is not implemented with pure Amplitude Shift Keying (ASK), it is implemented with |
| A. | qam. |
| B. | psk. |
| C. | fsk. |
| D. | binary ask. |
| Answer» B. psk. | |
| 169. |
Primary Colors for Color TV are |
| A. | blue, white, black. |
| B. | red, green, yellow. |
| C. | red, green, black. |
| D. | red, green, blue. |
| Answer» E. | |
| 170. |
In temporal compression, redundant frames are |
| A. | channelized. |
| B. | organized. |
| C. | digitized. |
| D. | removed. |
| Answer» E. | |
| 171. |
According to Nyquist theorem, if highest frequency of signal is f, we need to sample signal |
| A. | 19 times/sed. |
| B. | 20 times/sed. |
| C. | 21 times/sed. |
| D. | 22 times/sed. |
| Answer» D. 22 times/sed. | |
| 172. |
In Real Time Interactive Audio Video, mixing means combining several streams of traffic into |
| A. | 1 stream. |
| B. | 2 stream. |
| C. | 3 stream. |
| D. | 4 stream. |
| Answer» B. 2 stream. | |
| 173. |
Media player uses URL in metafile to access media server to |
| A. | download file. |
| B. | upload file. |
| C. | stored the file. |
| D. | stream file. |
| Answer» B. upload file. | |
| 174. |
Perceptual encoding is based on science of |
| A. | frames. |
| B. | music. |
| C. | rhythm. |
| D. | psychoacoustics. |
| Answer» E. | |
| 175. |
Moving Picture Experts Group (MPEG-1), was designed for a |
| A. | pc. |
| B. | cd. |
| C. | dvd. |
| D. | floppy. |
| Answer» C. dvd. | |
| 176. |
For speech, we need to compress digitize signals at |
| A. | 128 khz. |
| B. | 256 khz. |
| C. | 64 khz. |
| D. | 1152 khz. |
| Answer» D. 1152 khz. | |
| 177. |
Before audio or video signals can be sent on Internet, they need to be |
| A. | channelized. |
| B. | managed. |
| C. | digitized. |
| D. | organized. |
| Answer» D. organized. | |
| 178. |
In Real Time Interactive Audio Video, a sequence number on each packet is required for |
| A. | real-time traffic. |
| B. | real-time playback. |
| C. | real-time pixels. |
| D. | real-time frames. |
| Answer» B. real-time playback. | |
| 179. |
When a caller needs to communicate with callee, caller can use e-mail address instead of IP address in the |
| A. | ok message. |
| B. | bye message. |
| C. | invite message. |
| D. | great message. |
| Answer» D. great message. | |
| 180. |
A compressed audio/video file can be downloaded as a |
| A. | image. |
| B. | video. |
| C. | frame. |
| D. | text file. |
| Answer» E. | |
| 181. |
RTCP stands for |
| A. | real-time transport control program. |
| B. | real-time transport control packet. |
| C. | real-time transport control protocol. |
| D. | real-time transport control path. |
| Answer» D. real-time transport control path. | |
| 182. |
In Session Initiation Protocol (SIP), session can be terminated with a |
| A. | ok message. |
| B. | bye message. |
| C. | terminate message. |
| D. | quit message. |
| Answer» C. terminate message. | |
| 183. |
Real-time Transport Protocol (RTP) is protocol designed to handle real-time traffic on the |
| A. | frames. |
| B. | internet. |
| C. | ip. |
| D. | protocol. |
| Answer» C. ip. | |
| 184. |
In Real Time Interactive Audio Video, to prevent jitter, we can time-stamp packets and separate arrival time from the |
| A. | frame time. |
| B. | playback time. |
| C. | pixels time. |
| D. | packet time. |
| Answer» C. pixels time. | |
| 185. |
In Real Time Interactive Audio Video, data are stored in buffer at a possibly variable |
| A. | pixels. |
| B. | packets. |
| C. | rates. |
| D. | bytes. |
| Answer» D. bytes. | |
| 186. |
Session Initiation Protocol (SIP), is designed to be independent of underlying |
| A. | linear layer. |
| B. | lower layer. |
| C. | transport layer. |
| D. | protocol layer. |
| Answer» D. protocol layer. | |
| 187. |
A simple session using Session Initiation Protocol (SIP), consists of three modules: establishing, communicating, and |
| A. | transmission. |
| B. | system. |
| C. | streaming. |
| D. | terminating. |
| Answer» E. | |
| 188. |
To perform tracking of an IP, Session Initiation Protocol (SIP), uses concept of |
| A. | registration. |
| B. | termination. |
| C. | streaming. |
| D. | translation. |
| Answer» B. termination. | |
| 189. |
In Audio and Video Compression, term RBG expresses |
| A. | red, blue, green. |
| B. | red, black, grey. |
| C. | rate, bit, giga bit. |
| D. | red, bluish, greyish. |
| Answer» B. red, black, grey. | |
| 190. |
In Real-Time Transport Protocol (RTP), A source sends a bye message to shut down a |
| A. | system. |
| B. | frames. |
| C. | ip. |
| D. | stream. |
| Answer» E. | |
| 191. |
In Voice Over IP, Term SIP stands for |
| A. | session initiation protocol. |
| B. | session initiation port. |
| C. | session initiation path. |
| D. | session initiation packet. |
| Answer» B. session initiation port. | |
| 192. |
In Audio and Video Compression, voice is sampled at 8000 samples per second with |
| A. | 5 bits per sample. |
| B. | 6 bits per sample. |
| C. | 7 bits per sample. |
| D. | 8 bits per sample. |
| Answer» E. | |
| 193. |
Session Initiation Protocol (SIP), has a mechanism that finds the |
| A. | domain. |
| B. | way. |
| C. | ip address. |
| D. | terminal. |
| Answer» D. terminal. | |
| 194. |
In Real Time Interactive Audio Video, Jitter is introduced in real-time data by delay between |
| A. | frames. |
| B. | layers. |
| C. | pixels. |
| D. | packets. |
| Answer» E. | |
| 195. |
In Real Time Interactive Audio Video, conferencing requires two way communication between |
| A. | receivers and senders. |
| B. | packet to frames. |
| C. | pixels to packets. |
| D. | frames to pixels. |
| Answer» B. packet to frames. | |
| 196. |
Audio compression can be used for |
| A. | speech or music. |
| B. | voice and data. |
| C. | picture and colors. |
| D. | video and voice. |
| Answer» B. voice and data. | |
| 197. |
In Real-Time Transport Protocol (RTP), source periodically sends a source description message to give additional infonnation about |
| A. | others. |
| B. | itself. |
| C. | protocols. |
| D. | packets. |
| Answer» C. protocols. | |
| 198. |
Sometimes real-time traffic needs |
| A. | organization. |
| B. | traffic. |
| C. | channelizing. |
| D. | translation. |
| Answer» E. | |
| 199. |
For Music, we need to compress digitize signals at |
| A. | 1.41 i-mhz. |
| B. | 1.42 i-mhz. |
| C. | 1.45 i-mhz. |
| D. | 1.48 i-mhz. |
| Answer» B. 1.42 i-mhz. | |
| 200. |
MP3 produces three data rates from 96 Kbps to |
| A. | 128 kbps. |
| B. | 164 kbps. |
| C. | 256 kbps. |
| D. | 320 kbps. |
| Answer» C. 256 kbps. | |