Explanation

• RAM and Cache are volatile memories.
• It means their data is lost when power is turned off.
• Volatile memory requires continuous power to retain data.
• RAM is used for running programs and storing temporary data.
• Cache is a high-speed memory that stores frequently used data for the CPU.

Additional information:

• ROM is non-volatile and retains data without power.

Last verified on 16-02-2026

Explanation

• An IP address is used to uniquely identify a device on a network.
• It allows devices to communicate and exchange data over a network or the Internet.
• Every device connected to a network is assigned an IP address.
• An IP address helps send data to the correct destination.

Last verified on 07-07-2026

Explanation

• The Trash folder stores emails that have been deleted from the inbox or other folders.
• Deleted emails usually remain in Trash until they are permanently deleted or automatically removed after a certain period.

Additional information:

• Unwanted or unsolicited emails are generally called Spam.

Last verified on 23-10-2026

Explanation

• HDMI stands for High-Definition Multimedia Interface.
• It transmits digital video and audio signals through a single cable.
• It is commonly used to connect computers, laptops, gaming consoles, and DVD players to televisions or monitors.
• HDMI supports high-quality video and multichannel audio, depending on the devices and cable specifications.

Last verified on 21-10-2026

Explanation

• Bitcoin uses blockchain technology to record and verify transactions on a distributed public ledger.
• A blockchain stores transactions in blocks that are linked together using cryptographic hashes.
• Transactions are validated by network participants through Bitcoin’s Proof of Work (PoW) consensus mechanism.
• Bitcoin was introduced by the pseudonymous creator Satoshi Nakamoto in 2009.

Last verified on 21-10-2026

Explanation

• Phishing is a type of cyberattack in which criminals use fake emails, text messages, or websites to deceive people.
• The main purpose is to steal sensitive information, such as passwords, bank details, credit card numbers, or login credentials.
• Phishing messages often pretend to come from trusted organizations, banks, or government departments.

Last verified on 17-10-2026

Explanation

• A strong password helps prevent unauthorized users from accessing an account or digital system.
• Use a long password with a combination of letters, numbers, and symbols where supported.
• Create a unique password for each important account to reduce the risk if one password is compromised.

Last verified on 17-10-2026

Explanation

• A browser bookmark saves the address (URL) of a webpage so it can be opened easily later.
• Bookmarks help users quickly access frequently visited websites without typing the address again.
• Examples of web browsers include Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari.

Last verified on 17-10-2026

Explanation

• Do not open the attachment: It may contain malware, viruses, or ransomware that can damage devices or steal information.
• Verify the sender: Confirm the sender's identity through a trusted communication channel before taking any action.
• Report the email: Report the suspicious message to the organization's IT or cybersecurity team.

Last verified on 17-10-2026

Explanation

• An antivirus software protects a computer against malware and viruses.
• It detects, blocks, and removes harmful software from a computer.
• Common threats include viruses, worms, Trojans, and spyware.
• Antivirus software helps protect files, programs, and system data.
• It can provide real-time protection against new threats.

Last verified on 12-08-2026