Computer Science: Number Representation Errors

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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?

An overflow error is triggered (A) Signup and view all the answers

What is the primary purpose of a computing device?

To run a program (A) Signup and view all the answers

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

A roundoff error (A) Signup and view all the answers

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

Its ability to run a program (B) Signup and view all the answers

What is the result of rounding a decimal number?

A roundoff error (C) Signup and view all the answers

What is a computing device able to do?

Run a program (D) Signup and view all the answers

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

The size of the number being stored (B) Signup and view all the answers

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

To route online requests (D) Signup and view all the answers

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

Assignment of an IP address (B) Signup and view all the answers

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

To enable the device to connect to the internet (C) Signup and view all the answers

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

To facilitate the routing of online requests (A) Signup and view all the answers

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

The device will not be able to connect to the internet (A) Signup and view all the answers

What is a common characteristic of computer viruses?

They can copy themselves and spread to other systems (A) Signup and view all the answers

What do computer viruses require to infect a computer?

No authorization or permission whatsoever (C) Signup and view all the answers

What is the primary goal of a computer virus?

To gain unauthorized access to the computer (A) Signup and view all the answers

How do computer viruses typically spread?

Through a combination of all the above (D) Signup and view all the answers

What is the defining characteristic of a malicious program?

It is a program that can cause harm to a computer system (B) Signup and view all the answers

What is keylogging primarily used for?

To gain fraudulent access to confidential information (B) Signup and view all the answers

What type of access is involved in keylogging?

Unauthorized access to a computer (D) Signup and view all the answers

What is recorded by a keylogging program?

Every keystroke made by the user (B) Signup and view all the answers

What is the primary goal of keylogging?

To gain fraudulent access to passwords (D) Signup and view all the answers

What type of program is used for keylogging?

A program to record every keystroke (A) Signup and view all the answers