Exploring Computer Science Quiz

What is the primary purpose of a programming language?

• To create graphics

• To communicate instructions to a computer

• To browse the internet

• To play music

Answer explanation

The primary purpose of a programming language is to communicate instructions to a computer, enabling it to perform tasks. Other options like creating graphics or playing music are specific applications, not the main purpose.

Which of the following is a binary number?

• 1010

• 1234

• 5678

• 9999

Answer explanation

The binary number system uses only two digits: 0 and 1. The number 1010 consists solely of these digits, making it a binary number. In contrast, 1234, 5678, and 9999 contain digits outside this range.

What is an algorithm?

• A type of computer

• A step-by-step procedure for solving a problem

• A programming language

• A type of software

Answer explanation

An algorithm is defined as a step-by-step procedure for solving a problem. It is not a type of computer, programming language, or software, making the second choice the correct answer.

Which tag is used to create a hyperlink in HTML?

• ``

• ``

• `

  `

  `

  `

Answer explanation

• The `` tag is used to create hyperlinks in HTML. It allows you to link to other web pages or resources. The other tags listed serve different purposes: `` for images, `

  ` for divisions, and `

  ` for paragraphs.

What is the main goal of cybersecurity?

• To speed up the internet

• To protect data and systems from attacks

• To create new software

• To design websites

Answer explanation

The main goal of cybersecurity is to protect data and systems from attacks, ensuring the confidentiality, integrity, and availability of information. This is crucial for safeguarding against unauthorized access and cyber threats.

Which of the following is an example of data representation?

• A flowchart

• A binary number

• A programming language

• A web browser

Answer explanation

A binary number is a direct representation of data in a format that computers understand, using only 0s and 1s. In contrast, a flowchart, programming language, and web browser are tools or methods for processing or displaying data, not direct representations.

What does HTML stand for?

• Hyperlink and Text Markup Language

• Hypertext Markup Language

• High-level Text Markup Language

• Hypertext Machine Language

Answer explanation

HTML stands for Hypertext Markup Language, which is the standard language for creating web pages. The other options are incorrect as they do not accurately represent what HTML stands for.

Which of the following is a common cybersecurity threat?

• A computer mouse

• A virus

• A keyboard

• A monitor

Answer explanation

A virus is a common cybersecurity threat that can infect computers, replicate, and spread, causing damage or unauthorized access. In contrast, a computer mouse, keyboard, and monitor are hardware devices, not threats.

• 11

• 16

• 13

• 10

Answer explanation

According to the order of operations (PEMDAS/BODMAS), multiplication comes before addition. So, calculate 3 × 2 first, which equals 6. Then add 5: 5 + 6 = 11. Therefore, the correct answer is 11.

Which of the following is a flowchart symbol for a decision?

• Rectangle

• Diamond

• Circle

• Triangle

Answer explanation

In flowcharts, the diamond symbol represents a decision point where a question is asked, leading to different paths based on the answer. Therefore, the correct choice for a decision symbol is the diamond.

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