0% 0 Quiz no 4 1 / 100 1) Which kind of signal is mostly required by telephone lines? a) Digital b) High c) Analog d) Low 2 / 100 2) Which of the following is the fastest communication mode a) Medium b) Simple c) d.Duplex d) Full duplex 3 / 100 3) The difference between ROM and RAM is: a) ROM is larger b) ROM is read only c) ROM is nonvolatile & ROM is read only d) ROM is larger 4 / 100 4) Which of the following consists of two insulated copper wires twisted together? a) Fiber optic b) Submarine c) Twisted-pair wire d) Coaxial cables 5 / 100 5) The signals produced by a computer to send over phone line must be converted to: a) Digital b) High c) Analog d) Low 6 / 100 6) A bus line consists of: a) Parallel lines b) Registers c) Accumulators 7 / 100 7) OSI reference model has: a) 5 layers b) 9 layers c) 2 layers d) 7 layers 8 / 100 8) Physical path that connects the source and receiver is known as: a) Decoder b) Encoder c) Communication channel d) Linear medium 9 / 100 9) Which of the following converts digital signals to analog and analog to digital? a) . Multiplexer b) Modem c) Repeater d) . Codec 10 / 100 10) BCD code is a_ a) 4. b) 32 c) 15 d) .8. 11 / 100 11) The type of conversion in which a subset of users migrate to new system while others continue to use a) Direct b) Pilot c) Phased d) Parallel 12 / 100 12) Terminators are used in______ topology: a) Tree b) Star c) Bus d) Mesh 13 / 100 13) Computer networks are the convergence of two important technologies a) Computing and telecommunication b) Computing and mechatronics c) Computing and Mechanical d) Computing and electrical 14 / 100 14) The conversation over a walkie-talkie radio is-an example of: a) Half-duplex transmission b) .Duplex transmission c) Simplex transmission: d) Full-duplex transmission 15 / 100 15) The microphone converts the sound into: a) Computer file b) Software c) Mechanical signals d) Electrical signal 16 / 100 16) Transfers data between main memory and I/O devices without using CPU? a) BRA b) DMA c) DDA d) Port 17 / 100 17) NIC allows direct connection to: a) Network b) Modem c) Moniter d) Printer 18 / 100 18) Which computer memory is used to store programs and data being processed by the a) EEPROM b) ROM c) EPROM d) RAM 19 / 100 19) The communication across WAN occurs using: a) Telephone Line b) Satellite links c) Any d) Microwaves 20 / 100 20) System requirements are created during : a) Preliminary Investigation b) Development c) Analysis d) Design 21 / 100 21) XGA supports colors up to: a) 1 billion b) 16.7 million c) 1 million d) 16.7 billion 22 / 100 22) Which type of flat-panel computer screen provides the highest-quality image? a) CRT b) LCD c) Gas plasma d) ELD 23 / 100 23) Data link have two separate sub-layers known as: a) CS And MA b) LLC and MAC c) TOKEN and RING d) Ethernet 24 / 100 24) Testing all program components together is called : a) Volume testing b) Group testing c) Composite testing d) System testing 25 / 100 25) The network that connects different campuses of a college in city is an example of: a) LAN b) MAN c) WAN d) NAN 26 / 100 26) The binary number 0 and 1 is represented by a : a) Byte b) Word c) Character d) Bit 27 / 100 27) How many types of Language tntmlator are there? a) 2 b) 1 c) 4 d) 3 28 / 100 28) A set collection of a large number of computers all over the world connected to one another is a) Interlink b) Internet 29 / 100 29) CPU includes all of the following components EXCEPT a) Primary storage b) ALU c) Control Unit d) Register 30 / 100 30) The act of listening to the medium for a message is called: a) Collision b) Carrier sensing c) Transparency d) Contention 31 / 100 31) Which of the following memories allows simultaneous read and write operations? a) EPROM b) EEPROM c) ROM d) RAM 32 / 100 32) The World Wide Web was introduced in: a) Mid-1970s b) 1989 c) 2000 d) 1960s 33 / 100 33) CPU places address in______if memory location is to be read: a) MBR b) Accumulator c) MAR d) PC 34 / 100 34) Which of the following is NOT a benefit of computer networks? a) Reduce hardware costs b) Connect people c) Produce high quality programs d) Enable shared applications 35 / 100 35) What layer of OSI models performs data compression? a) Physical layer b) Session layer c) Transport layer d) Presentation layer 36 / 100 36) Which of the following is used to find information on the World Wide Web? a) Web Browser b) Website c) Web server d) Search engine 37 / 100 37) Which component is used to connect different parts of computer together? a) Power Supply b) Main memory c) Control Unit d) Bus Interconnection 38 / 100 38) What type of device translates data into a form that we can understand? a) Input b) Network c) Output d) Storage 39 / 100 39) BCD stands for: a) Byte coded decimal b) Binary coded decimal c) Bidirectional coded decimal d) Base coded decimal 40 / 100 40) How many characters can Unicode represcnt? a) 65,536 b) 10,000 c) 15,000 d) 500 41 / 100 41) Start/stop bits are not required in this type of transmission. a) Synchronous b) .Isochronous c) Monochronous d) .Asynchronous 42 / 100 42) Information technology is a combination of : a) Computing and electrical technology b) Computing and Communication technology c) Computing and mechatronics technology d) Computing and mechanical technology 43 / 100 43) The number of frequencies that can fit on a link at one time is called: a) Codec b) Bandwidth c) Demodulation d) Modulation 44 / 100 44) Defacto means: a) By law b) By nature c) By fact d) By luck 45 / 100 45) TB is approximately : a) 1024MB b) 1024GB c) 100MB d) 1000KB 46 / 100 46) The most widely used secondary storage in a comuter is : a) Compact disk b) Diskettes c) Magnetic tape d) Hard disks 47 / 100 47) The hardware device that temporarily holds data and program is called : a) Secondary storage b) Output c) CPU d) Primary storage 48 / 100 48) Transmission from a satellite to its earth-based station is called: a) Uplink b) Baselink c) Geolink d) Downlink 49 / 100 49) A computer network in which all computers have equal status and no one have control over others: a) Peer-to-peer b) Client-server c) Client-to-client d) Dedicated 50 / 100 50) Which of the following is NOT an example of System software : a) MS-Word b) Utility program c) Operating system d) Drives 51 / 100 51) The set of rules to exchange data in a communications network is called: a) Token b) Method c) Procedure d) Protocol 52 / 100 52) Which type of printer operates most like a photocopy machine : a) Inkjet printer b) Dot-Matrix printer c) Line printer d) Laser printer 53 / 100 53) Which of the following transmission media is used in LAN? a) Telephone line b) Coaxial cable c) Satellite d) Microwave 54 / 100 54) Cache memory works between: a) MMU and Hard disk b) CPU and RAM c) RAM and ROM d) CPU and Hard Disk 55 / 100 55) DSL stands for a) Digital Subscriber Link b) Distance Server Line c) Digital subscriber Line d) Domain System Line 56 / 100 56) The resolution of a monitor depends on: a) Number of pixels displayed b) All c) Number of bits representing a pixel d) Dot pitch of the monitor 57 / 100 57) Digital signals are commonly known as: a) Narrowband b) Baseband c) Broadband d) Band 58 / 100 58) Expansion cards are inserted into: a) Slots b) Buses c) CPU d) Plugs 59 / 100 59) Transmission media are usually categorized as_ a) Guided or unguided b) Baseband and broadband c) Fixed or unfixed d) Good and bad 60 / 100 60) A device that connect multiple network using similar or different protocol is: a) Ethernet b) Modem c) Router d) LAN 61 / 100 61) An online area where users write discussions about a particular subject is called: a) FTP b) Protocol c) Email d) Newsgroup 62 / 100 62) Which LAN access method resolves the contention between two or more nodes by collision detection a) CSMA/DR b) CSMA/CD c) CSMA/CR d) CSMA/CS 63 / 100 63) The type of reader commonly used to read bank checks is a (n). a) Optical-mark reader b) Bar.code reader c) Magnetic-ink character reader d) Bank check reader 64 / 100 64) The layer is used to control how a bit-streams of data is sent and received over physical medium a) Presentation layer b) transport layer c) Session layer d) Physical layer 65 / 100 65) An important characteristic of RAM is that it is. a) Volatile b) Nonvolatile c) Write only d) Read only 66 / 100 66) The services on the Internet include a) ALL b) FTP c) WWW d) E-MAIL 67 / 100 67) All of the following are examples of pointing devices EXCEPT : a) Joystick b) Touch screen c) Keyboard d) Trackball 68 / 100 68) A computer can be linked to the Internet through: a) Phone-line modem b) DSL c) Cable Modem d) All 69 / 100 69) Hypertext document is also called: a) Hyperlink b) Website c) Web page d) Email server 70 / 100 70) A disadvantage of the laser printer is that : a) It is quieter than impact printer b) Its output is of a lower quality c) It is very slow d) None 71 / 100 71) The type of conversion in which both new and old systems operate together for a period of time is : a) Parallel b) Direct c) Pilot d) Parallel 72 / 100 72) Which one look like credit card that contains thin microprocessor and memory embedded in it: a) Plastic card b) Smartcard c) Sound card d) Magnetic-strip card 73 / 100 73) .The conversation over a walkie-talkie radio is-an example of: a) Full-duplex transmission b) Half-duplex transmission. c) Duplex transmission d) Simplex transmission 74 / 100 74) The step that translates instruction into individual commands is called: a) Fetch b) Decode c) Execute d) Get 75 / 100 75) A standard IP address is composed of a total of: a) 256 bits b) 4 bits c) 16 bits d) 32 bits 76 / 100 76) Two dissimilar networks can be connected by a: a) a and b b) Bus c) Bridge d) Gateway 77 / 100 77) The central processing unit: a) Communicates with other parts of the computer system b) Interprets and executes instructions c) All of the these d) Does arithmetic and logic operations 78 / 100 78) What happens first when CPU executes an instruction? a) Execute instruction b) All c) Instruction fetch d) Decode instruction 79 / 100 79) Which memory retains its contents without constant electronic refreshment: a) Static RAM b) Dynamic RAM c) Dynamic ROM d) Static ROM 80 / 100 80) Which of the following is mostly used on different products in the market? a) MICR b) OMR c) UPC d) OCR 81 / 100 81) The hardware component that permanently holds data and program is called : a) Secondary storage b) CPU c) Primary storage d) Output 82 / 100 82) The process of modifying information system to meet changing needs is called : a) System upkeep b) System maintenance c) System management d) System modification 83 / 100 83) Which of the following keys is used to cancel an operation : a) Pause b) Enter c) Del d) Esc 84 / 100 84) The process of transferring a file from our own computer to the remote computer on a network: a) Downloading b) Sharing c) Uploading d) Pasting 85 / 100 85) What is another term for unguided media? a) Infrared b) Radiated c) Wire. d) Unbounded 86 / 100 86) The bus used to connect the CPU to memory on the system board is called: a) Processor bus b) System bus c) Memory bus d) Word bus 87 / 100 87) EEPROM stand for a) Electronically Erasable Programmable Read Only Memory b) Easily Erasable Programmable Read Only Memory c) Electrically Erasable Programmable Read Only Memory d) Electrically Enriched Programmable Read Only Memory 88 / 100 88) The four numbers in an IP address are called:: a) Codec b) Octal c) Octets d) Bytes 89 / 100 89) The network architecture that allows every computer to act as client as well as a server is: a) peer-to-peer b) Client/Server c) Server System d) Host system 90 / 100 90) Every host computer on the Internet has a(n): a) Common name and number b) Unique 15-digit number c) Similar IP address d) Unique IP address 91 / 100 91) Terminal is a: a) Device to give power to computer b) Point where data leaves the computer c) The last instruction in a program d) Any input/output device 92 / 100 92) The message sent on a ____ network can take any of several possible paths from source to destination a) Ring b) Star c) Mesh d) Tree 93 / 100 93) Exhaustive data gathering is done during : a) Design b) Analysis c) Development d) Preliminary Investigation 94 / 100 94) A LAN protocol in which all computers and devices on the network pass a special signal known as: a) Ethernet b) Token c) TCP/IP d) ARCnet 95 / 100 95) Who owns the Internet? a) None b) Pak Telecom c) United Nations d) U.S. Government 96 / 100 96) Was a wide area network connecting a small number of users. a) ISP b) ARPANET c) ARPA d) Internet 97 / 100 97) A cathode-ray tube has a: a) Glass tube b) Rubber tub c) Vacuum tube d) Coaxial tube 98 / 100 98) FTP facility is used to: a) File Transfer b) Check PC c) Transfer protocol d) Connect to internet 99 / 100 99) What binary bits are used to encode digital data? a) Os b) .0 to 9 c) Os and 1s. d) 1s 100 / 100 100) Which type of network covers a small area? a) WAN b) LAN c) NAN d) MAN Your score is LinkedIn Facebook Twitter VKontakte Post Views: 60 Post navigation AIOU test 5/01/2023 National University of Modern Languages Sector H-9, Islamabad Job Opportunities