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