WAEC - Data Processing (2023)

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

    Antwoord
    (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

    Antwoord
    (B)
    I
  • 11
    Computer malware is detected by
    Antwoord
    (C)
    antivirus
  • 12
    When performing computer recovery operations after a system crash, the startup disk is used to
    Antwoord
    (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
    Antwoord
    (C)
    relatively fast.
  • 14
    Which of the following devices is needed by a technician for protection against electrostatic discharge?
    Antwoord
    (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?

    Antwoord
    (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?

    Antwoord
    (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?

    Antwoord
    (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?

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

    Antwoord
    (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

    Antwoord
    (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

     

    Antwoord
    (C)
    Reg. No, House, Age
  • 31
    Computer ethical practises include the following except
    Antwoord
    (D)
    use of other people’s computer without due permission
  • 32
    The process of drawing inference from a piece of information is called
    Antwoord
    (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?
    Antwoord
    (D)
    Perform maintenance procedure
  • 34

    The equipment shown in Figure 1 is used for

    Antwoord
    (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?
    Antwoord
    (C)
    LAN