WAEC - Computer Studies (2020)

• 1

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

   

  پاسخ دهید

  (D)

  Transfer
• 2

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

  پاسخ دهید

  (B)

  information transmission. 
• 3

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

  پاسخ دهید

  (D)

  1121.
• 4

  Choose the incorrect statement about microcomputers? 

  پاسخ دهید

  (D)

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

  Under classification by data representation. computers can be? 

  پاسخ دهید

  (A)

  analogue, digital and hybrid. 
• 6

  Pascal's calculating machine was useful in? 

  پاسخ دهید

  (A)

  addition and subtraction only. 
• 7

  Arrange the following inventions in chronological order.

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

   

  پاسخ دهید

  (D)

  I, II, III and IV
• 8

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

  پاسخ دهید

  (D)

  Optical Mark Reader.
• 9

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

   

  پاسخ دهید

  (D)

  OR
• 10

  

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

   

   

  پاسخ دهید

  (B)

  1. 
• 11

  

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

   

   

   

   

  پاسخ دهید

  (B)

  1. 
• 12

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

   

  پاسخ دهید

  (C)

  a 64-bit data bus. 
• 13

  Which of the following memory types are nonvolatile?

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

   

  پاسخ دهید

  (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

   

  پاسخ دهید

  (D)

   S
• 15

  One attribute of the Read Only Memory is that it? 

  پاسخ دهید

  (C)

   stores the BIOS. 
• 16

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

   

  پاسخ دهید

  (D)

   system software 
• 17

  Antivirus software is an example of? 

  پاسخ دهید

  (D)

  utility software.
• 18

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

  پاسخ دهید

  (A)

  Analogue camera 
• 19

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

  پاسخ دهید

  (D)

  Fox Pro
• 20

  Files that contain machine language instructions are called? 

  پاسخ دهید

  (B)

  executable files 
• 21

  The following are types of errors in programming except? 

  پاسخ دهید

  (D)

  arithmetic error.
• 22

  The stages of software development do not include? 

  پاسخ دهید

  (B)

   conversion. 
• 23

   

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

   

  پاسخ دهید

  (D)

  P *(1 + R /100) ^N
• 24

  An algorithm can be described as? 

  پاسخ دهید

  (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? 

  پاسخ دهید

  (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 . 

  پاسخ دهید

  (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? 

  پاسخ دهید

  (A)

   barcode. 
• 28

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

  پاسخ دهید

  (A)

   barcode. 
• 29

  The following are types of data network except? 

  پاسخ دهید

  (A)

  MAC. 
• 30

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

  پاسخ دهید

  (D)

  two.
• 31

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

  پاسخ دهید

  (C)

  communication software, telephone line and decoder. 
• 32

  

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

  پاسخ دهید

  (A)

  Hybrid topology
• 33

  In networking, bandwidth means?

  پاسخ دهید

  (C)

  transmission capacity of a communication channel.
• 34

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

  پاسخ دهید

  (D)

  template
• 35

  The following are functions of database management system except? 

  پاسخ دهید

  (C)

  rule enforcement. 
• 36

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

  پاسخ دهید

  (C)

  use a presentation design template. 
• 37

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

  پاسخ دهید

  (D)

  = B1 +B2 +... + B10/10.
• 38

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

  پاسخ دهید

  (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? 

  پاسخ دهید

  (B)

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

  In database application, the field length determines the? 

  پاسخ دهید

  (A)

  maximum number of characters the field can accommodate. 
• 41

  Removing a program on a computer properly requires? 

  پاسخ دهید

  (D)

  uninstalling.
• 42

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

  پاسخ دهید

  (D)

  task bar.
• 43

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

  پاسخ دهید

  (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?

   

  پاسخ دهید

  (D)

   I, Il and III
• 45

  A single hexadecimal digit is represented by? 

  پاسخ دهید

  (C)

  four bits 
• 46

  The decimal fraction 0.9375 converts to binary? 

  پاسخ دهید

  (C)

   0.1111. 
• 47

  The EBCDIC coding system was developed on? 

  پاسخ دهید

  (A)

   IBM mainframe computers. 
• 48

  Which of the following is not a criterion files? 

  پاسخ دهید

  (C)

  Storage medium 
• 49

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

  I File

  ll. Field

  III. Character

  IV, Record

   

  پاسخ دهید

  (A)

  III, II, I and IV 
• 50

   

  Which of the following statements best describes sequential file organization? 

  پاسخ دهید

  (C)

  Records are sorted according to a key field.