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Y9: Algorithms

Quiz by Teran Subasinghe

GCSE (OCR)
Computer Science (9-1), J277
English National Curriculum

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20 questions
Show answers
  • Q1
    Which of the following best describes pseudocode?
    A low-level programming language used for direct hardware manipulation.
    A notational system for algorithms that mimics a real programming language without being constrained by any specific syntax.
    A specific programming language used for rapid software development.
    A graphical representation of the step-by-step execution of an algorithm.
    30s
    2.1.2c
  • Q2
    In a flowchart, what does a diamond shape represent?
    A process or an action to be executed.
    A decision point where the flow can branch based on a condition.
    Data input or output.
    The start or end point of the algorithm.
    30s
    2.1.2c
  • Q3
    Which high-level programming construct is used to repeat a block of code multiple times?
    Function
    Class
    Array
    Loop
    30s
    2.1.2c
  • Q4
    What does a flowchart's rectangular box typically represent?
    Data input or output.
    A process or operation to be performed.
    The start or end of the algorithm.
    A decision to be made based on a condition.
    30s
    2.1.2c
  • Q5
    Which of these is NOT a feature of high-level programming languages?
    Abstraction from hardware details
    Direct manipulation of hardware
    Use of natural language elements
    Support for object-oriented programming
    30s
    2.1.2c
  • Q6
    What is the main purpose of using pseudocode?
    To compile code into machine language.
    To debug actual codes in a high-level programming language.
    To create graphical representations of algorithms.
    To outline an algorithm in a language-agnostic format.
    30s
    2.1.2c
  • Q7
    What is the function of a flowchart?
    To generate the final code for an algorithm.
    To directly execute algorithms without coding.
    To visually represent the steps of an algorithm.
    To evaluate the complexity of an algorithm.
    30s
    2.1.2c
  • Q8
    Which statement best describes the role of a compiler in software development?
    It checks for syntax errors in the code without executing it.
    It enhances the performance of high-level code by optimizing it for runtime execution without translation.
    It executes high-level code line by line and displays output immediately.
    It translates high-level code into machine code that the computer can execute.
    30s
    2.1.2c
  • Q9
    Which of the following best describes the function of a loop in programming?
    To define a new data type.
    To check whether a condition is true or false once.
    To store a collection of values under a single name.
    To execute a block of code multiple times based on a condition.
    30s
    2.1.2c
  • Q10
    In the context of algorithms and programming, what does the term 'refactoring' refer to?
    The initial writing of the code for an algorithm.
    The debugging of code to identify and remove errors.
    The act of compiling code into an executable program.
    The process of restructuring existing code without changing its external behavior.
    30s
    2.1.2c
  • Q11
    In a temperature conversion application, what is the process?
    Entering the temperature to be converted
    Choosing the type of temperature scale to convert from
    Displaying the converted temperature
    Applying the formula to convert temperatures
    30s
    2.1.2a
  • Q12
    In an online shopping system, what is considered an output?
    The confirmation email sent to the customer
    Calculating the total price including tax
    The customer's selection of items to purchase
    Storing customer payment information securely
    30s
    2.1.2a
  • Q13
    In a basic calculator program, what is the input?
    The numbers and operation to be performed
    The result of the calculation
    Displaying the calculation on the screen
    Storing the result in memory for future calculations
    30s
    2.1.2a
  • Q14
    In a simple online quiz system, what represents the process step?
    Selecting the answers to each question
    Checking the answers against the correct ones
    Loading the quiz questions from the database
    Displaying the final score to the user
    30s
    2.1.2a
  • Q15
    In a digital alarm clock system, what is considered an output?
    Calculating the time left until the alarm
    The alarm sound at the set time
    Storing the alarm time in the system's memory
    Entering the current time and alarm time
    30s
    2.1.2a

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