WAEC - Data Processing (2023)

  • 1
    The Difference Engine and the Analytical Engine were invented by
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    (D)
    Charles Babbage
  • 2
    A type of file organization that stores data in the order of their arrival is called
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    (D)
    sequential file organization
  • 3
    Which of the following computer types represents data as variable and continuous values?
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    (A)
    Analogue computer
  • 4
    The following feature are found in the toolbox of CorelDraw application except
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    (C)
    marque tool
  • 5
    The ruler feature in MS Word that is used to indent the second and subsequent lines of a paragraph is
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    (B)
    hanging indent
  • 6
    Advantages of parallel database include the following except
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    (D)
    huge resources
  • 7
    The volume of data that can be sent from one point to another in a given time period is called
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    (D)
    bandwidth
  • 8
    One application of ICT in medicine is
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    (B)
    computerized axial tomography
  • 9

    Figure 2 is an email application interface. Use it to answer questions 15 and 16.
    New messages received are save in the part labelled

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    (A)
    II
  • 10

    Figure 2 is an email application interface. Use it to answer questions 15 and 16.

    To send an e-mail, the user must click on the part labelled

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    (B)
    I
  • 11
    Computer malware is detected by
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    (C)
    antivirus
  • 12
    When performing computer recovery operations after a system crash, the startup disk is used to
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    (D)
    recover the system disk from an image file
  • 13
    The speed of access to files in a random access file compared to other file organization methods is
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    (C)
    relatively fast.
  • 14
    Which of the following devices is needed by a technician for protection against electrostatic discharge?
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    (B)
    Wrist strap
  • 15

    Figure 3 is a Microsoft Excel Worksheet. Use it to answer questions 20 and 21.
     

       A  B  C  D  E
     1  IDENTICATION NUMBER  BASIC SALARY (N)  TOTAL ALLOWANCE (N)  TOTAL DEDUCTION (N)

     NET SALARY (N)

     2  WASC/LPT/001  800000  60000  40000  820000
     3  WASC/LPT/002  700000  40000  20000  720000
     4  WASC/LPT/003  300000  10000  5000  305000
     5  WASC/LPT/004  400000  20000  10000  410000

    Figure 3

    What formula will correctly display the total number of individuals involved in the computation as shown in Figure 3?

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    (C)
    =COUNTA(A2:A5)
  • 16

     

    Figure 3 is a Microsoft Excel Worksheet. Use it to answer questions 20 and 21.
     

       A  B  C  D  E
     1  IDENTICATION NUMBER  BASIC SALARY (N)  TOTAL ALLOWANCE (N)  TOTAL DEDUCTION (N)

     NET SALARY (N)

     2  WASC/LPT/001  800000  60000  40000  820000
     3  WASC/LPT/002  700000  40000  20000  720000
     4  WASC/LPT/003  300000  10000  5000  305000
     5  WASC/LPT/004  400000  20000  10000  410000

     

    Figure 3
    What formula will calculate the total number of individuals who earn less than ₦500,000 from the table as shown in Figure 3?

    پاسخ دهید
    (D)
    =COUNTIF(E2:E5,
  • 17

    Figure 4 is an entity relationship diagram in MS Access. Use it to answer questions 22 and 23.
    How many entity are listed in Figure 4?

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    (D)
    5
  • 18

    Figure 4 is an entity relationship diagram in MS Access. Use it to answer questions 22 and 23.
    What kind of relationship exists between users and products as shown in Figure 4?

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    (A)
    One-to-many
  • 19
    Database Administrator is a professional who
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    (B)
    designs, implements and maintains a database
  • 20
    The aim of administering questionaire is to collect
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    (A)
    data
  • 21
    A pointing device that controls cursor movement on the screen is
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    (A)
    trackball
  • 22
    The information processing stage that produces detailed evaluation of data is
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    (C)
    analysis
  • 23
    A digital platform for the delivery of public sector information and seminar to citizens is called
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    (D)
    e-government
  • 24
    The following precautionary measures are taken against virus infection except
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    (A)
    downloading e-mail and attachment before scanning it
  • 25
    Artificial intelligence is a feature of
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    (A)
    fifth generation computers
  • 26
    Macromedia Dreamweaver application is used for
    پاسخ دهید
    (D)
    web design
  • 27
    People who use cathode ray tube monitor without antiglare screen are susceptible to
    پاسخ دهید
    (A)
    blurred vision
  • 28

    Figure 5 is an MS PowerPoint application interface. The part used to apply motion effect to different objects of a slide is labelled

    پاسخ دهید
    (C)
    II
  • 29

    Use Table 1 to answer questions 35 and 36.

    Table 1: TableStudent

     Reg No  House

     Age

     18/001  Yellow  14
     18/002  Blue  15
     18/003  Yellow  15



    Columns 2 and 3 in Table 1 cannot be used as primary key because both fields contain

    پاسخ دهید
    (B)
    duplicate values
  • 30

     

    Use Table 1 to answer questions 35 and 36.

    Table 1: TableStudent
     

     Reg No  House

     Age

     18/001  Yellow  14
     18/002  Blue  15
     18/003  Yellow  15

    The attributes in Table 1 are

     

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    (C)
    Reg. No, House, Age
  • 31
    Computer ethical practises include the following except
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    (D)
    use of other people’s computer without due permission
  • 32
    The process of drawing inference from a piece of information is called
    پاسخ دهید
    (A)
    interpretation
  • 33
    A computer system under use was found to be unusually slow, freezes often and very dusty. What is needed to correct this problem?
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    (D)
    Perform maintenance procedure
  • 34

    The equipment shown in Figure 1 is used for

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    (D)
    radio transmission
  • 35
    Use the information below to answer questions 13 and 14.
    A student in the school hostel was able to upload some personal details on the school portal via the school's WiFi .
    The ISP and the hostel are both domiciled in the school premises.

    What type of network is illustrated above?
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    (C)
    LAN