Computer Science: Number Representation Errors
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Questions and Answers

What is a fundamental characteristic of a computing device?

  • It can only be used for mathematical calculations
  • It can only run a single program
  • It is a physical artefact (correct)
  • It can only be used by a single user

    • What happens when you try to store a number that is too large?

  • The number is truncated to fit the limit
  • A roundoff error occurs
  • The number is stored as a decimal
  • An overflow error occurs (correct)

    • What is not a requirement for a computing device to run a program?

  • It must be able to process data
  • It must have a user interface (correct)
  • It must have a power source
  • It must be a physical artefact

    • What is the consequence of trying to store a number that exceeds the limit?

    <p>An overflow error is triggered</p> Signup and view all the answers

    What is the primary purpose of a computing device?

    <p>To run a program</p> Signup and view all the answers

    What type of error occurs when you try to store a decimal number?

    <p>A roundoff error</p> Signup and view all the answers

    What is a characteristic that distinguishes a computing device from other physical artefacts?

    <p>Its ability to run a program</p> Signup and view all the answers

    What is the result of rounding a decimal number?

    <p>A roundoff error</p> Signup and view all the answers

    What is a computing device able to do?

    <p>Run a program</p> Signup and view all the answers

    What is the main difference between an overflow error and a roundoff error?

    <p>The size of the number being stored</p> Signup and view all the answers

    What is the primary function of an Internet Protocol (IP) address?

    <p>To route online requests</p> Signup and view all the answers

    What is a necessary step for a device to connect to the internet?

    <p>Assignment of an IP address</p> Signup and view all the answers

    What is the purpose of assigning an IP address to a device?

    <p>To enable the device to connect to the internet</p> Signup and view all the answers

    What is the role of an IP address in online communication?

    <p>To facilitate the routing of online requests</p> Signup and view all the answers

    What is a consequence of not having an IP address assigned to a device?

    <p>The device will not be able to connect to the internet</p> Signup and view all the answers

    What is a common characteristic of computer viruses?

    <p>They can copy themselves and spread to other systems</p> Signup and view all the answers

    What do computer viruses require to infect a computer?

    <p>No authorization or permission whatsoever</p> Signup and view all the answers

    What is the primary goal of a computer virus?

    <p>To gain unauthorized access to the computer</p> Signup and view all the answers

    How do computer viruses typically spread?

    <p>Through a combination of all the above</p> Signup and view all the answers

    What is the defining characteristic of a malicious program?

    <p>It is a program that can cause harm to a computer system</p> Signup and view all the answers

    What is keylogging primarily used for?

    <p>To gain fraudulent access to confidential information</p> Signup and view all the answers

    What type of access is involved in keylogging?

    <p>Unauthorized access to a computer</p> Signup and view all the answers

    What is recorded by a keylogging program?

    <p>Every keystroke made by the user</p> Signup and view all the answers

    What is the primary goal of keylogging?

    <p>To gain fraudulent access to passwords</p> Signup and view all the answers

    What type of program is used for keylogging?

    <p>A program to record every keystroke</p> Signup and view all the answers

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