Olympiad Test: High Order Thinking Skills - 4 - Free MCQ with solutions

Firewalls are security systems that monitor and control incoming and outgoing network traffic based on predetermined security rules, thus preventing unauthorized access to or from a private network.

Cloud computing allows users to access files from anywhere with an internet connection and benefits from automatic software updates. It does not require powerful local hardware, making it accessible on less powerful devices.

A switch is a networking device that connects multiple computers within a local area network (LAN), enabling them to communicate with each other.

HTTP stands for HyperText Transfer Protocol, which is used for transmitting web pages on the internet.

Using strong, unique passwords (1) and enabling two-factor authentication (3) help protect online privacy. Sharing personal information on social media (2) can compromise privacy.

Google Chrome and Mozilla Firefox are web browsers used to access the internet, while Microsoft Excel is a spreadsheet application.

Firewalls are used to protect networks by controlling the flow of traffic based on predetermined security rules and preventing unauthorized access. They do not increase network speed.

Encryption is used to protect data from unauthorized access (1) and ensure data integrity (3). It does not make data transmission faster (2).

Phishing involves sending fake emails (1) to trick people into giving personal information. Encrypting files for ransom (2) is ransomware, and installing malicious software (3) is typically referred to as malware.

Encryption is the process of converting data into a coded form to prevent unauthorized access, ensuring that only authorized parties can read it.