WAEC - Computer Studies (2019)

  • 1
    The personnel who deals with the computer and its management is called? 
    Trả lời
    (B)
    liveware 
  • 2
    The map of Nigeria is an example of ? 
    Trả lời
    (D)
    graphic data
  • 3
    The hexadecimal number 13, expressed as a binary here is? 
    Trả lời
    (A)
    00010011. 
  • 4

    Which of the following statements are true about computer? 

    I.Constructed from electronic components. II. It has self regeneration capability.

    III. It has facility for storage of data and programs. IV.It has provision tor input and output of data.

     

    Trả lời
    (C)
    I, lII and IV 
  • 5
    Computers are classified using the following criteria except? 
    Trả lời
    (A)
    cost and portability. 
  • 6
    The Slide Rule is accurate to? 
    Trả lời
    (B)
    3-4 decimal places. 
  • 7
    Modern computers compared to earlier computers are? 
    Trả lời
    (B)
    faster and smaller. 
  • 8
    An input device that converts an image into text is known as? 
    Trả lời
    (A)
    Optical Character Reader. 
  • 9
    The type of printer which works on the same principle as a photocopier is? 
    Trả lời
    (B)
    Ink. Jet Printer. 
  • 10
    The output of a NAND gate is 1 when? 
    Trả lời
    (A)
    all inputs are 0. 
  • 11

    A company known as CIBITO has the following memory modules in four of its computers as shown in Table 1 Use the information in Table 1 to answer questions 11 to 13.

    MEMORY MODULE

    MEMORY TYPE

    NUMBER OF PINS

    P SIMM

    30

    Q SIMM

    72

    R SO DIMM

    72

    S DIMM

     168

     Table 1

     Which of the memory modules is appropriate for a notebook computer?  

    Trả lời
    (A)
  • 12

    use the table above to answer this question

    The memory module with the smallest physical size is? 

    Trả lời
    (A)
  • 13

    A company known as CIBITO has the following modules in four of its computers as shown in Table 1. Use the information in Table 1 to answer this question.

    Memory module memory type No of pins
    P SIMM 30
    Q SIMM 72
    R SODIMM 72
    S DIMM 168

    identify the memory module with the largest physical Size?

    Trả lời
    (D)
    S
  • 14
    The scanner and the floppy disk are? 
    Trả lời
    (D)
    input and storage devices respectively.
  • 15
    The set of instructions written by computer experts to solve specific task of the user is called? 
    Trả lời
    (B)
    application software. 
  • 16
    A Collection of software that allows the computer to operate is called? 
    Trả lời
    (C)
    operating system. 
  • 17
    A suite of software that controls and manages the basic operation of a computer is? 
    Trả lời
    (D)
    system software.
  • 18
    The Windows PC and the Apple Macintosh are examples of two different? 
    Trả lời
    (C)
     programs. 
  • 19
    Machine Language instructions are expressed in? 
    Trả lời
    (A)
    binary. 
  • 20
    The following symbols are used in flowcharting except the? 
    Trả lời
    (D)
    close symbol.
  • 21
    Three major types of language translators are? 
    Trả lời
    (B)
     assembler, Compiler and interpreter. 
  • 22
    . Translate 2m\(^2\) + 3n- 9 as a BASIC arithmetic expression. 
    Trả lời
    (B)
    2 * m ^2 +3 * n - 9 
  • 23
    The term compiler in computer programming refers to a? 
    Trả lời
    (D)
    program which translates source program into object program.
  • 24
    The IF...THEN statement in BASIC programming is? 
    Trả lời
    (D)
     a conditional branch statement.
  • 25
    Flexibility of a good program means? 
    Trả lời
    (A)
    handling of any change(s) without having to rewrite the entire program. 
  • 26
    Fibre Optic cable transmits signal in the fom of? 
    Trả lời
    (C)
    Light. 
  • 27
    Data transfer can be initiated through the following media except? 
    Trả lời
    (C)
     trunking pipe. 
  • 28

    The topology represented in figure 1 is? 

    Trả lời
    (A)
    bus topology. 
  • 29

    To send a created MS PowerPoint document using email to a user, the document can be added as? 

     

     

     

     

    Trả lời
    (A)
    Attachment. 
  • 30

    What type of network is represented in Figure 2? 

    Trả lời
    (B)
    Metropolitan Area Network 
  • 31
    The major advantage of free software is that it is? 
    Trả lời
    (A)
     free and contains unlimited components. 
  • 32
    In MS Excel, the cell that contains the pointer or cursor is called? 
    Trả lời
    (A)
    active cell. 
  • 33
    One major difference between paper spreadsheet and electronic spreadsheet is? 
    Trả lời
    (D)
    speed of processing
  • 34
    To hold row and column titles in places so that they do not scroll when the user scrolls a worksheet, click the? 
    Trả lời
    (A)
    freeze panes command on the windows menu. 
  • 35
    In Microsoft PowerPoint, two kinds of sound effect files that can be added to a presentation are? 
    Trả lời
    (A)
     .wav files and .mid files. 
  • 36
    A cell with a red triangle in the top-right comer in a spreadsheet application signifies? 
    Trả lời
    (A)
    an error in the cell. 
  • 37
    Spreadsheet packages can be used for?  .
    Trả lời
    (C)
     budgeting and inventory. 
  • 38

    Which of the following is true when data maintained in MS Excel workbook is linked to a word document? The word document

     

    Trả lời
    (D)
     contains a reference to the original source application.
  • 39
    Data that is copied from an application is stored in the? 
    Trả lời
    (A)
    clipboard. 
  • 40

     After several 'save' and 'delete' operations, there remain many scattered areas of data too small to be used productively. This describes?

     

    Trả lời
    (C)
    fragmentation. 
  • 41
    The disk operating system will label three hard drives as? 
    Trả lời
    (B)
    C, D and E. 
  • 42

    Which of the options labeled I to IV give two stages involved in booting?

    I. Power On self test II. Loading of Operating System IIl. Loading of email IV. Power On Safe Mode

     

    Trả lời
    (A)
     I and Il only 
  • 43
    A bit as used in computing in digital communication is? 
    Trả lời
    (C)
    a bin digit. 
  • 44

    Multiply 101\(_2\) by 11\(_2\) 

     

     

     

    Trả lời
    (D)
    1111\(_2\)
  • 45
    In BCD encoding system, 25, will be represented as? 
    Trả lời
    (C)
    00100101.