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.
| 101. |
Super High frequency (SHF) is used in |
| A. | FM radio |
| B. | satellite communication |
| C. | AM radio |
| D. | cellular phones |
| Answer» C. AM radio | |
| 102. |
The actual bandwidth of a digital signal is infinite, the effective band width would be |
| A. | Finite |
| B. | Infinite |
| C. | Always Zero |
| D. | None |
| Answer» B. Infinite | |
| 103. |
ADSL is an asymmetric communication technology designed for |
| A. | students |
| B. | businesses |
| C. | residential users |
| D. | None of the above |
| Answer» D. None of the above | |
| 104. |
Which of the following is a voice band channel? |
| A. | Coaxial cable |
| B. | Telephone line |
| C. | Telegraph line |
| D. | Microwave systems |
| Answer» C. Telegraph line | |
| 105. |
Which of the following statement is correct? |
| A. | Satellite transponders contain a device that echos the radiation without change from one point on earth to another |
| B. | Satellite transponders contain a receiver and transmitter designed to relay microwave transmissions from one point on earth to another |
| C. | Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations |
| D. | Satellite transponder contains devices that transform the message sent from one location on earth to a different code for transmission to another location |
| Answer» C. Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations | |
| 106. |
The electromagnetic spectrum is divided into 8 ranges called |
| A. | bands |
| B. | propagation |
| C. | channel |
| D. | Chains |
| Answer» B. propagation | |
| 107. |
The Ultra High Frequency (UHF) is using the propagation method of |
| A. | Sky |
| B. | Ground |
| C. | Line of sight |
| D. | Sky, Line of sight |
| Answer» D. Sky, Line of sight | |
| 108. |
In bipolar encoding, we use three levels: positive, zero and |
| A. | one |
| B. | negative |
| C. | two |
| D. | None |
| Answer» C. two | |
| 109. |
The parameter that refers to the recording and broadcasting of the picture is |
| A. | Text |
| B. | Audio |
| C. | Image |
| D. | Video |
| Answer» E. | |
| 110. |
In the case of Phase Modulation (PM), the value of beta (β) is |
| A. | Lower |
| B. | Greater |
| C. | 0 |
| D. | Infinity |
| Answer» B. Greater | |
| 111. |
In Multilevel Frequency Shift Keying (MFSK), to send 3 bits at a time we can use |
| A. | 2 frequencies |
| B. | 4 frequencies |
| C. | 8 frequencies |
| D. | 10 frequencies |
| Answer» D. 10 frequencies | |
| 112. |
Information can be represented as a sequence of |
| A. | byte patterns |
| B. | characters |
| C. | bit patterns |
| D. | images |
| Answer» D. images | |
| 113. |
In mesh topology, the devices are connected via |
| A. | Multipoint link |
| B. | Point to point link |
| C. | No Link |
| D. | None of the above |
| Answer» C. No Link | |
| 114. |
An internet is a |
| A. | Collection of WANS |
| B. | Network of networks |
| C. | collection of LANS |
| D. | Collection of identical LANS and WANS |
| Answer» C. collection of LANS | |
| 115. |
In Return to Zero (RZ), the signal changes not between bits but |
| A. | before the bit |
| B. | after the bit |
| C. | doesn |
| D. | during the bit |
| Answer» E. | |
| 116. |
In downstream sharing, if the address matches then the data are |
| A. | kept |
| B. | discarded |
| C. | removed |
| D. | sent |
| Answer» B. discarded | |
| 117. |
In alternate mark inversion, mark means |
| A. | 0 |
| B. | 1 |
| C. | infinity |
| D. | None of the above |
| Answer» C. infinity | |
| 118. |
The wireless transmission is divided into |
| A. | 3 broad groups |
| B. | 6 broad groups |
| C. | 9 broad groups |
| D. | 8 broad groups |
| Answer» B. 6 broad groups | |
| 119. |
Unshielded Twisted-Pair cables are used in |
| A. | telephone lines |
| B. | DSL lines |
| C. | LAN |
| D. | All of the above |
| Answer» E. | |
| 120. |
The term that is used to measure of the thickness of the wire is |
| A. | decibels |
| B. | hertz |
| C. | gauge |
| D. | diameter |
| Answer» D. diameter | |
| 121. |
Performance, reliability and security are criteria of |
| A. | Efficient network |
| B. | intranet |
| C. | Ethernet |
| D. | None of Above |
| Answer» B. intranet | |
| 122. |
Unguided medium is |
| A. | twisted pair cable |
| B. | coaxial cable |
| C. | fiber optic cable |
| D. | free space |
| Answer» E. | |
| 123. |
V.90 modems with a bit rate of 56,000 bps are called |
| A. | 56K modem |
| B. | 56000 modem |
| C. | 56 modem |
| D. | 5600 Modem |
| Answer» B. 56000 modem | |
| 124. |
The Quadrature means |
| A. | below phase |
| B. | above phase |
| C. | in phase |
| D. | out-of-phase |
| Answer» E. | |
| 125. |
Line coding converts a sequence of |
| A. | Frames to digital signal |
| B. | bits to a digital signal |
| C. | Bytes to digital signal |
| D. | Packets of data to digital signals |
| Answer» C. Bytes to digital signal | |
| 126. |
The cable modem transmission system receives data from the internet and passes them to the |
| A. | combiner |
| B. | subscriber |
| C. | destination address |
| D. | internet |
| Answer» B. subscriber | |
| 127. |
The change or lack of change in the level of the voltage determines the value of the bit is known as |
| A. | NRZ |
| B. | NRZ-L |
| C. | NRZ-I |
| D. | RZ |
| Answer» D. RZ | |
| 128. |
Communication is bidirectional in |
| A. | Traditional cable TV |
| B. | Hybrid Fiber Coaxial TV network |
| C. | radio networks |
| D. | Both b and c |
| Answer» C. radio networks | |
| 129. |
The block coding scheme that provides greater error detection capability than 4B/5B is |
| A. | 8RIlOR |
| B. | R8ZS |
| C. | NRZ-L |
| D. | NRZ-I |
| Answer» B. R8ZS | |
| 130. |
RG-59 is used in |
| A. | radio |
| B. | thick Ethernet |
| C. | thin Ethernet |
| D. | cable TV |
| Answer» E. | |
| 131. |
Telephone networks use |
| A. | message switching |
| B. | packet switching |
| C. | circuit switching |
| D. | None |
| Answer» D. None | |
| 132. |
In single mode, the decrease in density results in a critical angle that is close enough to |
| A. | 180 degree |
| B. | 360 degree |
| C. | 0 degree |
| D. | 90 degree |
| Answer» E. | |
| 133. |
Line coding, block coding and scrambling are the techniques of converting the |
| A. | analog data to analog signals |
| B. | Digital data to digital signals |
| C. | analog data to digital signals |
| D. | digital signals to digital data |
| Answer» C. analog data to digital signals | |
| 134. |
A sequence that creates the constant zero voltage does not have a |
| A. | Error detection |
| B. | Synchronization |
| C. | DC component |
| D. | Complexity |
| Answer» D. Complexity | |
| 135. |
Baud rate is the number of |
| A. | signal elements per second |
| B. | bits per second |
| C. | Frames per second |
| D. | None |
| Answer» B. bits per second | |
| 136. |
In multimode propagation, the term step index refers to the |
| A. | index of refraction |
| B. | sudden change of signal |
| C. | index of density |
| D. | index of light rays |
| Answer» C. index of density | |
| 137. |
Block coding is normally referred to as mBlnB coding; it replaces each m-bit group with an |
| A. | n-bit group |
| B. | n-1 bit group |
| C. | n+1 bit group |
| D. | None |
| Answer» B. n-1 bit group | |
| 138. |
The downstream data occupies |
| A. | upper band |
| B. | lower band |
| C. | middle band |
| D. | None of the above |
| Answer» B. lower band | |
| 139. |
Transmission media which transmits voice and data through air as high frequency radio waves is |
| A. | twisted pair |
| B. | coaxial cable |
| C. | satellite |
| D. | microwaves |
| Answer» E. | |
| 140. |
The most common twisted-pair cable used in communications are |
| A. | UTP |
| B. | STP |
| C. | normal twisted copper pair cables |
| D. | None |
| Answer» B. STP | |
| 141. |
The cable modem for data transmission, is similar to |
| A. | high-bit-rate digital subscriber |
| B. | asymmetric DSL modem |
| C. | very high-bit-rate digital subscriber line modem |
| D. | asymmetric DSL lite |
| Answer» C. very high-bit-rate digital subscriber line modem | |
| 142. |
Unguided signals can travel from the source to destination in |
| A. | one way |
| B. | two ways |
| C. | three ways |
| D. | four ways |
| Answer» D. four ways | |
| 143. |
What is the number of bits per baud for PSK with four different phases |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» D. 5 | |
| 144. |
Fast Ethernet uses |
| A. | Free space |
| B. | Twisted pair cable |
| C. | fiber optic cable |
| D. | Coaxial cable |
| Answer» D. Coaxial cable | |
| 145. |
The term that refers to the shortest unit and carries data elements is called |
| A. | Signal element |
| B. | data carrier |
| C. | Single element |
| D. | both a and b |
| Answer» B. data carrier | |
| 146. |
In which scheme all the signal levels are on one side of the time axis? |
| A. | Unipolar |
| B. | Bipolar |
| C. | Polar |
| D. | Multi level |
| Answer» B. Bipolar | |
| 147. |
The 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 the above |
| Answer» C. Half Duplex | |
| 148. |
In analog-to-analog conversion, the terms that are usually categorized together is |
| A. | AM and FM |
| B. | AM and PM |
| C. | PM AND FM |
| D. | None of the above |
| Answer» D. None of the above | |
| 149. |
The cable that accepts and transports signals in the form of light is |
| A. | Unwired |
| B. | fiber optic cable |
| C. | coaxial cable |
| D. | twisted pair cable |
| Answer» C. coaxial cable | |
| 150. |
Infrared waves, that can be used for short range communication have frequencies between |
| A. | 300 GHz to 700 THz |
| B. | 300 GHz to 800 THz |
| C. | 300 GHz to 100 THz |
| D. | 300 GHz to 400 THz |
| Answer» E. | |