WAEC - Data Processing (2023)

• 1

  The Difference Engine and the Analytical Engine were invented by

  回答

  (D)

  Charles Babbage
• 2

  A type of file organization that stores data in the order of their arrival is called

  回答

  (D)

  sequential file organization
• 3

  Which of the following computer types represents data as variable and continuous values?

  回答

  (A)

  Analogue computer
• 4

  The following feature are found in the toolbox of CorelDraw application except

  回答

  (C)

  marque tool
• 5

  The ruler feature in MS Word that is used to indent the second and subsequent lines of a paragraph is

  回答

  (B)

  hanging indent
• 6

  Advantages of parallel database include the following except

  回答

  (D)

  huge resources
• 7

  The volume of data that can be sent from one point to another in a given time period is called

  回答

  (D)

  bandwidth
• 8

  One application of ICT in medicine is

  回答

  (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

  回答

  (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

  回答

  (B)

  I
• 11

  Computer malware is detected by

  回答

  (C)

  antivirus
• 12

  When performing computer recovery operations after a system crash, the startup disk is used to

  回答

  (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

  回答

  (C)

  relatively fast.
• 14

  Which of the following devices is needed by a technician for protection against electrostatic discharge?

  回答

  (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?

  回答

  (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?

  回答

  (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?

  回答

  (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?

  回答

  (A)

  One-to-many
• 19

  Database Administrator is a professional who

  回答

  (B)

  designs, implements and maintains a database
• 20

  The aim of administering questionaire is to collect

  回答

  (A)

  data
• 21

  A pointing device that controls cursor movement on the screen is

  回答

  (A)

  trackball
• 22

  The information processing stage that produces detailed evaluation of data is

  回答

  (C)

  analysis
• 23

  A digital platform for the delivery of public sector information and seminar to citizens is called

  回答

  (D)

  e-government
• 24

  The following precautionary measures are taken against virus infection except

  回答

  (A)

  downloading e-mail and attachment before scanning it
• 25

  Artificial intelligence is a feature of

  回答

  (A)

  fifth generation computers
• 26

  Macromedia Dreamweaver application is used for

  回答

  (D)

  web design
• 27

  People who use cathode ray tube monitor without antiglare screen are susceptible to

  回答

  (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

  回答

  (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

  回答

  (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

   

  回答

  (C)

  Reg. No, House, Age
• 31

  Computer ethical practises include the following except

  回答

  (D)

  use of other people’s computer without due permission
• 32

  The process of drawing inference from a piece of information is called

  回答

  (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?

  回答

  (D)

  Perform maintenance procedure
• 34

  

  The equipment shown in Figure 1 is used for

  回答

  (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?

  回答

  (C)

  LAN