Computer Science for IGCSE & O level - Programming (Section 8)

• 1

  What does the acronym "IDE" stand for?

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  (A)

  Integrated Development Environment
• 2

  What is the purpose of a comment in a programming language?

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  (B)

  To provide explanations and notes within the code.
• 3

  Which operator will give you the quotient when two numbers are divided?

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  (B)

  %
• 4

  What will the following code print? `print "Hello"[1]`

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  (B)

  e
• 5

  How does using clear identifier names help improve code quality?

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  (C)

  It makes the code more readable and easier to maintain.
• 6

  Which statement will output the sum of two numbers?

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  (A)

  Calculate Number1 + Number2
• 7

  What is the role of an `AND` operator in a conditional statement?

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  (B)

  It executes code only if all conditions are true.
• 8

  In pseudocode, what is the common keyword used for selection?

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  (B)

  IF
• 9

  What is the primary purpose of a loop in programming?

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  (B)

  To execute a block of code repeatedly.
• 10

  Which of the following are common components of a function's definition?

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  A

  B

  C
• 11

  What data type is the best choice for storing a person's age?

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  (C)

  Integer
• 12

  What is the term for a step-by-step procedure for solving a problem?

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  (B)

  Algorithm
• 13

  What does a `CASE` statement do?

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  (D)

  It performs different actions based on the value of a variable.
• 14

  What does the term 'algorithm' refer to in computer science?

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  (B)

  A set of instructions to solve a problem.
• 15

  What is the function of 'input' in the context of programming?

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  (A)

  To get information from the user.
• 16

  Which concept is demonstrated by using the 'IF' statement in a program?

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  (C)

  Selection
• 17

  What will this code print? `print "Hello".length()` (Assuming a language where length is a method of strings)

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  (B)

  5
• 18

  Which of the following is NOT a data type?

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  (D)

  Loop
• 19

  Which data type is the best fit for representing a person's height?

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  (B)

  REAL
• 20

  What is the primary purpose of an `IF` statement in a programming language?

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  (C)

  To execute a block of code conditionally.
• 21

  In most programming languages, what does `!=` represent?

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  (B)

  Not equal to
• 22

  In Python, what will be the output of `print(15 % 4)`?

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  (C)

  3
• 23

  Which is the core feature that differentiates a function from a procedure?

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  (B)

  Functions always return a value.
• 24

  What is the purpose of code testing?

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  (C)

  To check for and fix any errors (bugs).
• 25

  Which operator is used to check equality?

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  (B)

  ==
• 26

  What is the purpose of an `IF...ELSE IF...ELSE` statement?

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  (B)

  To check for multiple conditions and execute different code blocks based on which condition is met.
• 27

  What is the keyword used in Python to define a function?

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  (C)

  def
• 28

  How does the use of procedures improve the structure of a program?

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  (C)

  By breaking a larger task into smaller, manageable units.
• 29

  Which programming practice significantly enhances the organization and reusability of code?

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  (C)

  Employing modular design principles.
• 30

  What does an 'operator' do in a programming context?

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  (B)

  Performs an action on operands.
• 31

  What will be the result of "cat" < "dog" in most programming languages?

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  (A)

  True
• 32

  What is code testing primarily used for?

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  (B)

  To identify and fix errors.
• 33

  What is the purpose of an 'input' statement in a program?

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  (B)

  To receive data from the user.
• 34

  What does modular programming emphasize?

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  (B)

  Creating smaller, reusable blocks of code.
• 35

  When using an `IF-ELSE` statement, what does the `ELSE` block contain?

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  (A)

  Code to be executed if the `IF` condition is false.
• 36

  When should you use a conditional statement (e.g., `IF` statement)?

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  (B)

  To execute different code blocks based on a condition.
• 37

  What is the function of the `Substring` method?

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  (C)

  To extract a portion of a string.
• 38

  Which operator is used to perform an assignment?

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  (A)

  =
• 39

  What does 'compiling' a program mean?

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  (B)

  Translating source code into machine code.
• 40

  How is the `RANDOM` routine typically used?

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  (A)

  To generate a random number.
• 41

  What will be the output from the code below? `IF age >= 18 THEN PRINT "You are an adult" ENDIF`

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  A

  D
• 42

  Which of the following is an example of a valid loop in Python?

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  (C)

  for i in range(5):
• 43

  Which type of code contains only one single value?

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  (A)

  char
• 44

  What is the purpose of the `OUTPUT` statement in pseudo-code?

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  (B)

  To display information to the user.
• 45

  What is the main difference between a compiler and an interpreter?

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  (B)

  A compiler translates the entire code at once, while an interpreter translates code line by line.
• 46

  In a programming context, what is a 'function'?

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  (A)

  A named block of code that performs a specific task.
• 47

  What does the 'print' function usually do?

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  (B)

  Displays information on the screen.
• 48

  What is the difference between '==' and '=' in programming?

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  (C)

  '==' is for comparison, '=' is for assignment.
• 49

  What do you use when storing numbers with fractions or decimals?

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  (D)

  Real/Double
• 50

  Which concept is being implemented in a program when a conditional statement is employed?

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  (B)

  Selection