0% 2 Quiz no 3 1 / 100 1) Which of the following technique uses modulation? a) Broadband. b) Bitband c) Baseband d) Bandwidth 2 / 100 2) An example of non-numerical data is: a) Marks b) Address c) Bank balance d) Roll No 3 / 100 3) ASCII code was.developed by: a) Duplex b) Simplex transmission c) Full-duplex d) ANSI.. 4 / 100 4) A type of communication that sends data using flow control to synchronize data between sender a) Asynchronous transmission b) .2 c) Isochronous d) Synchronous transmission 5 / 100 5) The number of times a wave repeats during a specific time interval is called a) Phase b) Frequency c) Amplitude d) Frequency 6 / 100 6) Which of the following is not a:data communication mode? a) Auto. b) Full-duplex. c) Half-duplex d) Simplex Half-duplex 7 / 100 7) Digital signal represents a sequence of values. a) Unique b) Continuous. c) Discrete d) Bytes 8 / 100 8) Which of the following can severally affect the quality of satellite transmission? a) Bad weather b) Mountains c) Light rays d) Moon 9 / 100 9) Which of the following features is provided with a modem? a) Speeds b) Self-testing c) All d) Transmission rate 10 / 100 10) Modem stands for: a) Mode/ Modeless b) Modification/demodification c) Modulation/demodulationn d) Modeling/Demonstration 11 / 100 11) A modem allows computers to access other computers through following types of connection a) Offline b) Cable c) Wireless d) Phone lines 12 / 100 12) Which communication technique can transmit the data over long distance? a) Bandwidth b) Baseband c) Bitband d) Broadband 13 / 100 13) The internal transfer of binary data in a computer uses mode. a) Parallel b) Direct c) Serial d) .Sequential 14 / 100 14) Digital signals are commonly known as: a) Broadband b) Band c) Narrowband d) Baseband 15 / 100 15) The types.of signals can be: a) Digital and Analog b) Analog c) Analog d) Digital 16 / 100 16) The number of times a wave repeats during a specific time interval is called a) Phase b) Frequency c) Frequency d) Amplitude 17 / 100 17) IBM stands for: a) Internet Bulletin Machine b) Internat c) International Business machine d) Internet Business Machine 18 / 100 18) The transmission rate of modem can be measured in: a) Characters per second b) Bytes per second c) Bits per second d) Words per second 19 / 100 19) How many characters ASCII 8-bit code can represent? a) 256 b) 500 c) 364 d) 128 20 / 100 20) BCD code is a_ a) 15 b) 4. c) 32 d) .8. 21 / 100 21) Which of the following coding schemes uses 4-bit code? a) BCD b) EBCDIC c) Unicode d) ASCII. 22 / 100 22) Television and radio broadcasts are examples of: a) Simplex transmission b) .Duplex transmission c) Full-duplex transmission d) Half-duplex transmission 23 / 100 23) Bps is short for: a) Baud per second b) Bytes per second c) Binary packets a second d) Bits per second 24 / 100 24) Which type of data consists of words,sentences and paragraphs? a) Numeric b) Video c) Text. d) Audio 25 / 100 25) The electromagnetic or light waves representing data are called: a) Mode b) Coding c) Information d) Signal 26 / 100 26) Internet surfing is an example of: a) Half duplex transmission b) .Full duplex transmission c) Frequency d) Duplex transmission. 27 / 100 27) EBCDIC is a a) 8-bit b) .6-bit c) 4-bit d) 7-bit 28 / 100 28) Which of the following code can represent up to 65,536 symbols? a) ASCII b) Unicode c) BCD d) EBCDIC 29 / 100 29) Which of the following devices uses parallel transmission? a) Printer b) All c) .Keyboard d) Mouse 30 / 100 30) Which modem is used to transmit data signals through air instead of cable? a) All b) Wireless c) Internal d) External 31 / 100 31) code is 7-bit or.8-bit code. a) BCD: b) ASCII c) EBCDIC d) Unicode 32 / 100 32) .The conversation over a walkie-talkie radio is-an example of: a) Simplex transmission b) Half-duplex transmission. c) Full-duplex transmission d) Duplex transmission 33 / 100 33) What binary bits are used to encode digital data? a) Os and 1s. b) .0 to 9 c) 1s d) Os 34 / 100 34) Data is transmitted block by block in: . a) Synchronous transmission b) Analog transmission c) Isochronous transmission d) Asynchronous transmission 35 / 100 35) The time taken by a data signal to reach to moon and then back to earth was about: a) 2-second b) 2 hours c) 2 minutes d) 2 ms 36 / 100 36) Satellite transmission stations that can both send and receive messages are called: a) Jupiter stations b) Mars stations c) Moon stations d) Earth stations 37 / 100 37) Which is the most secure type of transmission medium? a) Twisted-wire pair b) Fiber-optic cable c) Microwave d) .Coaxial cable 38 / 100 38) Analog signal is measured in: a) Volt b) Amplitude c) Hertz d) WATTS 39 / 100 39) Computer transmit data in the form of codes. a) Binary b) Decimal c) None d) Analog 40 / 100 40) Which of the following cables consists of a single core of solid copper? a) Coaxial b) Digital c) Unicode d) Medium 41 / 100 41) BCD stands for: a) Bidirectional coded decimal b) Binary coded decimal c) Byte coded decimal d) Base coded decimal 42 / 100 42) Which of the following is NOT a coding scheme to represent data in computer? a) Unicode b) Bilateral code c) ASCII d) EBCDIC 43 / 100 43) Which of the following is the fastest communication mode a) d.Duplex b) Full duplex c) Simple d) Medium 44 / 100 44) Which of the following is not a communication media? a) Twisted Pair b) Fiber optic c) Microwave d) Modem 45 / 100 45) Which multiplexing technique shifts each signal to a different carrier frequency? a) TDM b) FDM c) TTD d) DFM 46 / 100 46) The chart,graph,pictures and freehand drawing are examples of: a) Text data b) Image data c) Numeric data d) Audio data 47 / 100 47) Which of the following transmission media is used in LAN? a) Microwave b) Coaxial cable c) Satellite d) Telephone line 48 / 100 48) How many characters ASCII 7-bit code can represent? a) 500 b) 128 c) 364 d) 256 49 / 100 49) The communication channels can be divided into_categories: a) Eight b) Four c) Two d) Seven 50 / 100 50) An important property of fiber optic cable is: a) Radiation b) Degradation c) Refraction d) Noise 51 / 100 51) Unicode uses: a) 16-bit b) 32-bit c) 64-bit d) 132-bit’ 52 / 100 52) What is another term for unguided media? a) Wire. b) Radiated c) Infrared d) Unbounded 53 / 100 53) .Which transmission type transmits data one character at a time a) Ethernet. b) Parallel: c) Asynchronous d) Synchronous 54 / 100 54) Full-duplex communication is made. possible by the.devices known as: a) Multiplexer: b) ..Keyboard. c) Modem d) .Mouse 55 / 100 55) The process of transferring data electronically from one place to another is caled a) Data processing b) Data Sequence c) Data communication d) NIC 56 / 100 56) Which of the following converts digital signals to analog and analog to digital? a) Repeater b) . Multiplexer c) Modem d) . Codec 57 / 100 57) Frequency is measured in: a) Amps b) Seconds c) Bps. d) Hertz 58 / 100 58) Which transmission allows data to travel in one direction at a time? a) Duplex transmission b) .Half Duplex transmission c) Full Duplex transmission d) Simplex transmission.. 59 / 100 59) All of the following are guided communications media EXCEPT: a) Coaxial cable b) Fiber-optic cable c) Satellite d) Twisted pair 60 / 100 60) Select unguided media from the following: a) Coaxial b) Fiber optic c) Twisted pair d) Satellite 61 / 100 61) What is another term for guided media? a) Bounded b) Radiated c) Infrared d) Wireless 62 / 100 62) 50.This type of transmission is sometimes called start/stop transmission a) Synchronous b) Isochronous c) Parallel d) .Asynchronous 63 / 100 63) The computers in wide geographical area can be efficiently connected by: a) WiFi b) Twisted pair c) Coaxial cable d) Satellite 64 / 100 64) Each set of bit pattern is called: a) ASCII b) Coding c) Code d) Unicode 65 / 100 65) How many devices can exist between a sending and receiving host? a) 10 b) 2 c) Any. d) 1 66 / 100 66) Transmission that is used without timing signal is called: a) Asynchronous b) Parallel c) Synchronous d) Isochronous 67 / 100 67) The conversation over a walkie-talkie radio is-an example of: a) .Duplex transmission b) Full-duplex transmission c) Half-duplex transmission d) Simplex transmission: 68 / 100 68) The signals produced by a computer to send over phone line must be converted to: a) Analog b) High c) Digital d) Low 69 / 100 69) A telephone conversation is’an example of:. a) .Duplex transmission b) Half-duplex transmission c) Full-duplex transmission: d) Simplex transmission 70 / 100 70) Which of the following is the insulation on a fiber-optic cable? a) Housing b) . Braiding c) Sheathing d) Cladding 71 / 100 71) How many characters can Unicode represcnt? a) 500 b) 10,000 c) 65,536 d) 15,000 72 / 100 72) All of the following are elements of data communication system EXCEPT: a) Sender b) Medium c) Receiver d) Voltage 73 / 100 73) Physical path that connects the source and receiver is known as: a) Encoder b) Decoder c) Communication channel d) Linear medium 74 / 100 74) Which of the following coding schemes primarily.used by IBM? a) ASCII b) BCD c) Unicode d) EBCDIC 75 / 100 75) An advantage of synchronous over asynchronous transmission is: a) Two-way b) Error checking c) Speed d) Simplicity 76 / 100 76) signal is a continuous electrical signal in the form of wave. a) Analog b) Green c) Digital d) Red 77 / 100 77) The height of wave within a given period of time is known as: a) Phase b) Amplitude c) Pulse d) Frequency 78 / 100 78) Which kind of signal is mostly required by telephone lines? a) High b) Analog c) Digital d) Low 79 / 100 79) Which of the following type of data is used to display actions and movement?. a) Audio. b) Video c) Image d) Text 80 / 100 80) Which type of modem can be added to the system unit through expansion slot? a) External b) Wireless c) Internal d) All 81 / 100 81) The diameter of fiber optical cable is: a) 62.5 mm b) 62.5 microns c) 62.5 m d) 62.5 cm 82 / 100 82) The mode that is like a two way street with traffic flowing in both direction at the.same time is ca a) Half Duplex transmission b) Duplex transmission c) Full Duplex transmission d) Simplex transmission 83 / 100 83) Which of the following consists of thin glass to transmit beams of light? a) Microwave b) Twisted pair c) Fiber-optic cable d) Coaxial cable 84 / 100 84) A type of communication that sends that uses a clock to control timing of bits being sent is called: a) Monochronous transmission b) Isochronous transmission c) Synchronous transmission d) Asynchronous transmission 85 / 100 85) The medium in which signals travel through a cable or wire is called: a) International medias b) Unguided media c) Local media d) Guided media 86 / 100 86) Which communications medium requires line-of-sight? a) Coaxial b) Fiber optic. c) Twisted pair d) Microwavec. 87 / 100 87) The’transmission in which data can be received and. sent simultaneously is called: a) Simplex b) Half-duplex c) Full-duplex d) Duplex 88 / 100 88) How many modes of data communication are available? a) 3. b) 3. c) .2 d) 4 89 / 100 89) Transmission media are usually categorized as_ a) Guided or unguided b) Baseband and broadband c) Good and bad d) Fixed or unfixed 90 / 100 90) Which medium transmits voice and data via air as high-frequency radio waves? a) Microwave b) Fiber-optic cable c) Coaxial cable d) Twisted pair 91 / 100 91) The music and speech.represent: a) Audio b) Numeric c) Image d) Text 92 / 100 92) Start/stop bits are not required in this type of transmission. a) Monochronous b) Synchronous c) .Asynchronous d) .Isochronous 93 / 100 93) Transmission from a satellite to its earth-based station is called: a) Baselink b) Downlink c) Uplink d) Geolink 94 / 100 94) The process of converting analog to digital signal is known as: a) Demodulation b) Merging c) Data sequencing d) Modulation 95 / 100 95) The number of frequencies that can fit on a link at one time is called: a) Demodulation b) Modulation c) Codec d) Bandwidth 96 / 100 96) The typical fiber optic cable consists of very narrow strand of glass called: a) Sheet b) Base c) Cladding d) Core 97 / 100 97) Which value in start bit indicates that the transmission line is idle? a) .4 b) .2 c) .3 d) .1 98 / 100 98) Most data .transmitted over telephone lines uses:. a) Parallel transmission b) Sequential transmission c) Direct transmission d) Serial transmission 99 / 100 99) The process of converting a digital signal to an analog signal is called: a) Merging b) Modulation c) Conversion d) Demodulation 100 / 100 100) A fiber-optic cable’s core is measured in: a) AWG b) Microns c) Centimeters d) Inches Your score is LinkedIn Facebook Twitter VKontakte 5403-Unit-01Download5403-Uniit-2Download5403-Uniit-3Download5403-Uniit-4Download5403-Uniit-5Download5403-Uniit-6Download5403-Uniit-7Download5403-Uniit-8Download5403-Uniit-9Download Post Views: 45 Post navigation AIOU Test 04/01/2023 Quiz 4 date 06/01/2023