Aiou Workshop 5403| Test 4 admin 3 years ago Spread the love /100 99 Aiou Workshop 5403| Test 4 1 / 100 1) Which of the following is a De Facto standard? a) ANSI b) ASCII c) ISO d) SNA 2 / 100 2) The typical fiber optic cable consists of very narrow strand of glass called: a) Base b) Cladding c) Sheet d) Core 3 / 100 3) A modem allows computers to access other computers through following types of connection a) Offline b) Cable c) Wireless d) Phone lines 4 / 100 4) Mobile phone(Cellular) systems often use: a) MAN b) NAN c) LAN d) WAN 5 / 100 5) Which of the following is not a communication media? a) Fiber optic b) Modem c) Microwave d) Twisted Pair 6 / 100 6) Analog signal is measured in: a) Hertz b) Volt c) Amplitude d) WATTS 7 / 100 7) A set collection of a large number of computers all over the world connected to one another is a) Interlink b) Internet 8 / 100 8) A network that transmits data over citywide distance faster than LAN is: a) NAN b) LAN c) MAN d) WAN 9 / 100 9) Which multiplexing technique shifts each signal to a different carrier frequency? a) FDM b) TTD c) TDM d) DFM 10 / 100 10) The network that connects different campuses of a college in city is an example of: a) WAN b) NAN c) MAN d) LAN 11 / 100 11) An important property of fiber optic cable is: a) Noise b) Refraction c) Degradation d) Radiation 12 / 100 12) The ITU was formerly known as: a) ISO b) SNA c) IBM d) CCIT 13 / 100 13) OSI reference model has: a) 9 layers b) 5 layers c) 2 layers d) 7 layers 14 / 100 14) In the OSI model, encryption and decryption are functions of the________? a) presentation layer b) transport layer c) Session layer d) Application layer 15 / 100 15) Which type of network covers a small area? a) MAN b) WAN c) NAN d) LAN 16 / 100 16) Terminators are used in______ topology: a) Star b) Mesh c) Bus d) Tree 17 / 100 17) The height of wave within a given period of time is known as: a) Phase b) Amplitude c) Pulse d) Frequency 18 / 100 18) Satellite transmission stations that can both send and receive messages are called: a) Earth stations b) Moon stations c) Jupiter stations d) Mars stations 19 / 100 19) Ethernet, Token bus and Token Ring have been defined by: a) Microsoft b) CCIT c) ISO d) IEEE 20 / 100 20) Defacto means: a) By nature b) By fact c) By luck d) By law 21 / 100 21) .Which transmission type transmits data one character at a time a) Ethernet. b) Synchronous c) Parallel: d) Asynchronous 22 / 100 22) The network architecture that allows every computer to act as client as well as a server is: a) Client/Server b) Host system c) Server System d) peer-to-peer 23 / 100 23) DSL stands for a) Digital subscriber Line b) Distance Server Line c) Digital Subscriber Link d) Domain System Line 24 / 100 24) Which LAN access method resolves the contention between two or more nodes by collision detection a) CSMA/DR b) CSMA/CR c) CSMA/CD d) CSMA/CS 25 / 100 25) How many types of network standard are there a) 16 b) 8 c) 2 d) 4 26 / 100 26) Which problem occurs when two workstations on shared Ethernet try to access LAN at the same time a) Collision b) Accident c) Termination d) Deadlock 27 / 100 27) The medium in which signals travel through a cable or wire is called: a) Unguided media b) Local media c) International medias d) Guided media 28 / 100 28) Which communications medium requires line-of-sight? a) Twisted pair b) Coaxial c) Microwavec. d) Fiber optic. 29 / 100 29) Sound,light and radio waves are examples of a) Digital b) Pulse c) Analog d) Green 30 / 100 30) Which of the following is not a:data communication mode? a) Auto. b) Simplex Half-duplex c) Half-duplex d) Full-duplex. 31 / 100 31) Television and radio broadcasts are examples of: a) Simplex transmission b) .Duplex transmission c) Full-duplex transmission d) Half-duplex transmission 32 / 100 32) In a typical LAN, each computer on the network is connected through: a) Microwaves b) Phone c) Satellite d) Cables 33 / 100 33) Which of the following topologies uses routers? a) Tree b) star c) bus d) Mesh 34 / 100 34) Internet surfing is an example of: a) Half duplex transmission b) Frequency c) Duplex transmission. d) .Full duplex transmission 35 / 100 35) Which type of data consists of words,sentences and paragraphs? a) Numeric b) Video c) Text. d) Audio 36 / 100 36) Transmission from a satellite to its earth-based station is called: a) Uplink b) Downlink c) Geolink d) Baselink 37 / 100 37) signal is a continuous electrical signal in the form of wave. a) Analog b) Red c) Green d) Digital 38 / 100 38) IBM stands for: a) Internat b) Internet Business Machine c) Internet Bulletin Machine d) International Business machine 39 / 100 39) Which kind of signal is mostly required by telephone lines? a) Analog b) Digital c) High d) Low 40 / 100 40) The layer that is in between of session and application layer is a) physical layer b) Session layer c) transport layer d) presentation layer 41 / 100 41) The layer is used to control how a bit-streams of data is sent and received over physical medium a) Presentation layer b) Session layer c) transport layer d) Physical layer 42 / 100 42) Which of the following is an internet protocol? a) Ethernet b) ARCnet c) Token Ring d) TCP/IP 43 / 100 43) Digital signals are commonly known as: a) Narrowband b) Baseband c) Broadband d) Band 44 / 100 44) Which of the following is NOT a coding scheme to represent data in computer? a) EBCDIC b) ASCII c) Bilateral code d) Unicode 45 / 100 45) Which of the following converts digital signals to analog and analog to digital? a) Repeater b) Modem c) . Multiplexer d) . Codec 46 / 100 46) Select unguided media from the following: a) Coaxial b) Fiber optic c) Twisted pair d) Satellite 47 / 100 47) Which type of modem can be added to the system unit through expansion slot? a) All b) Internal c) Wireless d) External 48 / 100 48) Transmission from Earth to satellite is called: a) downlink b) Uplink c) High link d) Low link 49 / 100 49) In WAN, the communication software that allows a personal computer to appear as terminal is call a) Electronic mail software b) Teleconferencing software c) Bulletin board system d) Terminal emulation software 50 / 100 50) Data link layer lies between the physical layer and the_______layer a) Transport b) Network c) Session d) Presentation 51 / 100 51) A set collection of a large number of computers all over world connected to one another is called a) Group b) Internet c) Collection d) Interlink 52 / 100 52) OSI model was created by: a) IBM b) ISO c) NESPAK d) ANSI 53 / 100 53) The number of frequencies that can fit on a link at one time is called: a) Codec b) Modulation c) Demodulation d) Bandwidth 54 / 100 54) BCD code is a_ a) .8. b) 32 c) 15 d) 4. 55 / 100 55) The act of listening to the medium for a message is called: a) Collision b) Transparency c) Contention d) Carrier sensing 56 / 100 56) Which modem is used to transmit data signals through air instead of cable? a) All b) Wireless c) External d) Internal 57 / 100 57) Cabling on a linear bus topology can be extended using which of following? a) Barrel Connector b) Terminator c) Network adapter card d) Medium attachment 58 / 100 58) The time taken by a data signal to reach to moon and then back to earth was about: a) 2-second b) 2 ms c) 2 minutes d) 2 hours 59 / 100 59) The types.of signals can be: a) Digital and Analog b) Digital c) Analog d) Analog 60 / 100 60) Which of the following is NOT a network topology? a) Bus b) Star c) Tree d) Band 61 / 100 61) ISDN stands for: a) Internet Service Digital Network b) Improved Speed Digital Network c) Improved Speed Down Network d) Integrated Services Digital Network 62 / 100 62) Which is the most secure type of transmission medium? a) .Coaxial cable b) Fiber-optic cable c) Microwave d) Twisted-wire pair 63 / 100 63) The number of times a wave repeats during a specific time interval is called a) Frequency b) Amplitude c) Frequency d) Phase 64 / 100 64) FTP facility is used to: a) Check PC b) Transfer protocol c) File Transfer d) Connect to internet 65 / 100 65) Computer networks are the convergence of two important technologies a) Computing and electrical b) Computing and mechatronics c) Computing and Mechanical d) Computing and telecommunication 66 / 100 66) The communication across WAN occurs using: a) Satellite links b) Microwaves c) Any d) Telephone Line 67 / 100 67) The top most layer of the OSI is called: a) Session b) transport c) Application d) Presentation 68 / 100 68) An example of non-numerical data is: a) Bank balance b) Marks c) Roll No d) Address 69 / 100 69) The communication channels can be divided into_categories: a) Four b) Seven c) Eight d) Two 70 / 100 70) In _________topology, the entire network goes down if the backbone cable fails a) Ring b) Bus c) Tree d) Mesh 71 / 100 71) Layer that is responsible for transferring frames is a) Session layer b) transport layer c) Presentation layer d) Data link layer 72 / 100 72) The primary difference between a LAN and a WAN is: a) Distance b) The variety of hardware devices c) The number of hardware devices d) The number of software programs available 73 / 100 73) A network that covers a limited geographic distance such as an office is called: a) TAN b) WAN c) LAN d) MAN 74 / 100 74) Which of the following technique uses modulation? a) Baseband b) Bandwidth c) Broadband. d) Bitband 75 / 100 75) What is another term for guided media? a) Radiated b) Wireless c) Bounded d) Infrared 76 / 100 76) Star topology is less expensive than: a) star b) Tree c) All d) Mesh 77 / 100 77) Which of the following transmission media is used in LAN? a) Microwave b) Telephone line c) Satellite d) Coaxial cable 78 / 100 78) The process of converting analog to digital signal is known as: a) Data sequencing b) Demodulation c) Modulation d) Merging 79 / 100 79) Which of the following features is provided with a modem? a) Self-testing b) All c) Transmission rate d) Speeds 80 / 100 80) BCD stands for: a) Bidirectional coded decimal b) Base coded decimal c) Binary coded decimal d) Byte coded decimal 81 / 100 81) Data is transmitted block by block in: . a) Analog transmission b) Synchronous transmission c) Asynchronous transmission d) Isochronous transmission 82 / 100 82) Which of the following is communications device a) Router b) Ethernet c) UTP d) USB 83 / 100 83) Which protocol works on the concepts of ring topology and a token? a) ARCnet b) TCP/IP c) Ethernet d) Token Ring 84 / 100 84) A network that covers a large geographic distance such as a country is called a: a) LAN b) PAN c) MAN d) WAN 85 / 100 85) Which of the following coding schemes primarily.used by IBM? a) Unicode b) EBCDIC c) ASCII d) BCD 86 / 100 86) A device used to connect similar networks is called: a) All b) Bus c) Bridge d) Gateway 87 / 100 87) A type of communication that sends that uses a clock to control timing of bits being sent is called: a) Isochronous transmission b) Synchronous transmission c) Monochronous transmission d) Asynchronous transmission 88 / 100 88) A LAN is a combination of: a) LAN software b) Network card c) LAN cables d) ALL 89 / 100 89) The process of transferring a file from remote computer to local computer on network is called a) Pasting b) Downloading c) Uploaading d) Sharing 90 / 100 90) Project 802 defines standard for which layers of the OSI model: a) c. Transport & network layers b) Physical & data link layers c) Physical & session layers d) d. Network & data link layers 91 / 100 91) How many characters ASCII 8-bit code can represent? a) 128 b) 364 c) 500 d) 256 92 / 100 92) Which of the following is a governing body to approve the network standards? a) ASCII b) IEEE c) ALL d) EIA 93 / 100 93) Digital signal represents a sequence of values. a) Unique b) Bytes c) Discrete d) Continuous. 94 / 100 94) Frequency is measured in: a) Hertz b) Bps. c) Seconds d) Amps 95 / 100 95) The layer that provides services that directly support user application: a) Presentation layer b) Session layer c) Application layer d) transport layer 96 / 100 96) The computers in wide geographical area can be efficiently connected by: a) Satellite b) Coaxial cable c) WiFi d) Twisted pair 97 / 100 97) A lab with twenty computers and a laser printer is an example_____ of area network a) Little b) Local c) Line d) Limited 98 / 100 98) Which of the following topology is used by Ethernet protocol? a) Mesh b) Band c) Ring d) Bus 99 / 100 99) The diameter of fiber optical cable is: a) 62.5 cm b) 62.5 m c) 62.5 microns d) 62.5 mm 100 / 100 100) Route determination can be identified by: a) Presentation layer b) Network layer c) Session layer d) transport layer Your score is LinkedIn Facebook Twitter VKontakte {{#message}}{{{message}}}{{/message}}{{^message}}Your submission failed. 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