WAEC - Computer Studies (2020)

• 1

  Which of the following is not a step involved in data conversion?

   

  პასუხი

  (D)

  Transfer
• 2

  The communication of knowledge, concepts and ideas is referred to as? 

  პასუხი

  (B)

  information transmission. 
• 3

  The equivalent of the decimal number 89 in base 4 is? 

  პასუხი

  (D)

  1121.
• 4

  Choose the incorrect statement about microcomputers? 

  პასუხი

  (D)

  Most micros use rigid disk storage devices rather than floppy disk drives.
• 5

  Under classification by data representation. computers can be? 

  პასუხი

  (A)

  analogue, digital and hybrid. 
• 6

  Pascal's calculating machine was useful in? 

  პასუხი

  (A)

  addition and subtraction only. 
• 7

  Arrange the following inventions in chronological order.

  I. Slide Rule ll. Pascaline llI. Analytical Engine IV. Difference Engine

   

  პასუხი

  (D)

  I, II, III and IV
• 8

  Handwritten letters, typeset documents or printout Characters can be read into the computer by? 

  პასუხი

  (D)

  Optical Mark Reader.
• 9

  which of the following logic operations would select a record when at least one condition is satisfied? 

   

  პასუხი

  (D)

  OR
• 10

  

  In Figure 1, the value of Z when X = 1 and Y=0 is? 

   

   

  პასუხი

  (B)

  1. 
• 11

  

  In Figure 1, the value of Z when X = 1 and Y=0 is? 

   

   

   

   

  პასუხი

  (B)

  1. 
• 12

  A data bus that is capable of transferring 8 bytes of data at once can be rated as? 

   

  პასუხი

  (C)

  a 64-bit data bus. 
• 13

  Which of the following memory types are nonvolatile?

  I. PROM II. SRAM II. EEPROM IV. DRAM

   

  პასუხი

  (A)

   I and lll only 
• 14

  A company known as CIBITO has the following memory modules in four of its computers as shown in Table 1.

  Which memory module will be appropriate for graphic design?

   

  Table 1

  Memory Module	Memory Type	Number of Pins
  P	SIMM	30
  Q	SIMM	72
  R	SO DIMM	72
  S	DIMM	168

   

  პასუხი

  (D)

   S
• 15

  One attribute of the Read Only Memory is that it? 

  პასუხი

  (C)

   stores the BIOS. 
• 16

  The operation of a computer and peripherals attached to it is controlled by?

   

  პასუხი

  (D)

   system software 
• 17

  Antivirus software is an example of? 

  პასუხი

  (D)

  utility software.
• 18

  Which of the following devices will not require the use of system software to operate? 

  პასუხი

  (A)

  Analogue camera 
• 19

  Which of the following application packages is most suitable for database management? 

  პასუხი

  (D)

  Fox Pro
• 20

  Files that contain machine language instructions are called? 

  პასუხი

  (B)

  executable files 
• 21

  The following are types of errors in programming except? 

  პასუხი

  (D)

  arithmetic error.
• 22

  The stages of software development do not include? 

  პასუხი

  (B)

   conversion. 
• 23

   

  Express P(1 + \(\frac{R}{100}\))\(^N\) as a BASIC programming notation.

   

  პასუხი

  (D)

  P *(1 + R /100) ^N
• 24

  An algorithm can be described as? 

  პასუხი

  (D)

  a sequence of instructions for solving a problem.
• 25

  The major difference between low level programming language and high level programming language Is that? 

  პასუხი

  (D)

  low level languages do not need translators while high level languages do.
• 26

  What will the following BASIC statement produce? PRINT "Afrikom Computer School" A . 

  პასუხი

  (C)

  Afrikon Computer School displayed on the screen. 
• 27

  A rectangular image consisting of black lines and white spaces representing data which can be optically read is called? 

  პასუხი

  (A)

   barcode. 
• 28

  A rectangular image consisting of black lines and white spaces representing data which can be optically read is called? 

  პასუხი

  (A)

   barcode. 
• 29

  The following are types of data network except? 

  პასუხი

  (A)

  MAC. 
• 30

  The minimum number of computers that can constitute a network is? 

  პასუხი

  (D)

  two.
• 31

  If a computer user wants to access the national database from a remote location, the user will require a? 

  პასუხი

  (C)

  communication software, telephone line and decoder. 
• 32

  

  Which type of network topology is represented in Figure 2 above?

  პასუხი

  (A)

  Hybrid topology
• 33

  In networking, bandwidth means?

  პასუხი

  (C)

  transmission capacity of a communication channel.
• 34

  A pre-designed document coordinating fonts, a layout and a background is also known as? 

  პასუხი

  (D)

  template
• 35

  The following are functions of database management system except? 

  პასუხი

  (C)

  rule enforcement. 
• 36

  To make the entire slides in a presentation to have the same "look" in MS PowerPoint, a user  should? 

  პასუხი

  (C)

  use a presentation design template. 
• 37

  In MS Excel, the average of 10 numbers give B1, B2,...,B10 is? 

  პასუხი

  (D)

  = B1 +B2 +... + B10/10.
• 38

  To centre worksheet titles across a range of cells MS Excel, the user must? 

  პასუხი

  (C)

   select the cells containing the title text and use the fill handle to centre the text across the range of cells. 
• 39

  In graphics, a subscript text refers to a text that is positioned? 

  პასუხი

  (B)

   a little bit below a normal line of text. 
• 40

  In database application, the field length determines the? 

  პასუხი

  (A)

  maximum number of characters the field can accommodate. 
• 41

  Removing a program on a computer properly requires? 

  პასუხი

  (D)

  uninstalling.
• 42

  A feature on the computer desktop that indicates the current active applications is called? 

  პასუხი

  (D)

  task bar.
• 43

  In a Windows operation involving dragging and dropping an item on the desktop, the item will be? 

  პასუხი

  (C)

  moved to a new location. 
• 44

  Digital signals can be represented by: 

  I. Binary Codes

  Il.0 and 1

  III. High and Low Which of the following options is correct?

   

  პასუხი

  (D)

   I, Il and III
• 45

  A single hexadecimal digit is represented by? 

  პასუხი

  (C)

  four bits 
• 46

  The decimal fraction 0.9375 converts to binary? 

  პასუხი

  (C)

   0.1111. 
• 47

  The EBCDIC coding system was developed on? 

  პასუხი

  (A)

   IBM mainframe computers. 
• 48

  Which of the following is not a criterion files? 

  პასუხი

  (C)

  Storage medium 
• 49

  Which of the following options best shows the arrangement of file structure? 

  I File

  ll. Field

  III. Character

  IV, Record

   

  პასუხი

  (A)

  III, II, I and IV 
• 50

   

  Which of the following statements best describes sequential file organization? 

  პასუხი

  (C)

  Records are sorted according to a key field.