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CS Olympiad Olympiad Computer Science — practice questions

Explore 120 free Olympiad Computer Science questions in CS Olympiad Computer Science. Open each question or exercise to read its content, reference answers and available explanation.

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Olympiad Computer Science questions and exercises with answers

Showing questions 1–30 of 120.

A beginner picks a language built to be easy for people to read and write. That is a:Read the answer and worked solution →A programmer writes count = 5. The name count labels a spot in:Read the answer and worked solution →In JavaScript one variable holds a number, then later a text string. JavaScript is:Read the answer and worked solution →A language forces every declaration to state both a name and a data type. It is:Read the answer and worked solution →A C variable named a stores the location of variable b. The variable a is a:Read the answer and worked solution →A team reuses ready made library functions through a published interface called an:Read the answer and worked solution →The first high level language to use a compiler, a landmark in computing, was:Read the answer and worked solution →A tool takes a whole source program and produces equivalent object code. It is a:Read the answer and worked solution →A different tool runs a program one line at a time as it translates. It is an:Read the answer and worked solution →Java compiles to bytecode, which the JVM then executes. This execution style is:Read the answer and worked solution →A paradigm centred on evaluating expressions and storing results in variables is:Read the answer and worked solution →A named block of code that can be called from anywhere to do one job is a:Read the answer and worked solution →A programmer states what result she wants and lets the system work out the steps. That style is:Read the answer and worked solution →A language built from facts and rules about a problem is a:Read the answer and worked solution →A function that calls itself to solve smaller versions of a problem uses:Read the answer and worked solution →A function that can be assigned to a variable like any value is called:Read the answer and worked solution →A function that accepts other functions as arguments is called:Read the answer and worked solution →In object oriented code, the blueprint used to construct objects is the:Read the answer and worked solution →Building one object from a class is known as:Read the answer and worked solution →A class keeps its data and methods together and hides the inner workings. This is:Read the answer and worked solution →A child class takes on attributes from its parent class. This principle is:Read the answer and worked solution →The same inherited behaviour acts differently depending on context. This is:Read the answer and worked solution →Catch the OOP ideasRead the answer and worked solution →Pop the translatorsRead the answer and worked solution →Run the language gatesRead the answer and worked solution →Slice the code wordsRead the answer and worked solution →Compiled or interpretedRead the answer and worked solution →Sort the computing termsRead the answer and worked solution →Type the numberRead the answer and worked solution →Programming bingoRead the answer and worked solution →

Worked practice questions

A beginner picks a language built to be easy for people to read and write. That is a:

  1. High level language
  2. Hard wired language
  3. Hand coded language
  4. Half built language
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Correct answer: A. High level language

1. Languages differ in how close they sit to the machine. 2. One kind is designed for humans to read and understand. 3. That kind is a high level language. _Source: OpenStax Introduction to Computer Science, Chapter 7, High-Level Programming Languages._

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A programmer writes count = 5. The name count labels a spot in:

  1. Printer
  2. Memory
  3. Monitor
  4. Network
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Correct answer: B. Memory

1. A variable gives a name to a storage place. 2. That place holds a value while the program runs. 3. So count labels a spot in memory. _Source: OpenStax Introduction to Computer Science, Chapter 7, High-Level Programming Languages._

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In JavaScript one variable holds a number, then later a text string. JavaScript is:

  1. Weakly typed
  2. Strongly typed
  3. Strictly typed
  4. Steadily typed
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Correct answer: A. Weakly typed

1. Some languages lock a variable to one data type. 2. JavaScript lets the same variable hold any type. 3. So JavaScript is weakly typed. _Source: OpenStax Introduction to Computer Science, Chapter 7, High-Level Programming Languages._

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More Computer Science topics

Computer ScienceBooleans and DecisionsData Structures and AlgorithmsInterview PrepModels of ComputationProgramming LanguagesPython Strings Lists and Tuples