Explanation

• HTTPS (SSL/TLS) is used to establish a secure channel of communication over a potentially insecure network.
• SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are cryptographic protocols.
• They encrypt data to protect it from hackers during transmission.
• They ensure data confidentiality, integrity, and authentication.
• Commonly used in secure websites (HTTPS connections).

Last verified on 08-06-2026

Explanation

• Mail Merge is used to merge data into a template document to create multiple personalized copies.
• It is a feature of MS Word used for bulk document creation.
• It combines a main document with a data source (like names or addresses).
• Each output document is customized automatically.
• Commonly used for letters, labels, and certificates.

Last verified on 20-06-2026

Explanation

• An address that does not change daily is called a Static IP Address.
• It remains fixed.
• It is manually assigned by the ISP or network admin.
• It is used for servers, websites, and permanent network services.
• Unlike dynamic IP, it stays constant over time.

Last verified on 20-06-2026

Explanation

• IPv6 size: 128 bits
• IPv4 size: 32 bits
• Format: Hexadecimal (8 groups)
• Purpose: Increase address availability
• Developed by: IETF (Internet Engineering Task Force)

Last verified on 20-06-2026

Explanation

• IPv4 (Internet Protocol version 4) uses a 32-bit address system.
• It allows about 4.3 billion unique IP addresses.
• It is written in dotted decimal format (e.g., 192.168.1.1).

Additional information:

• IPv6 length → 128 bits

Last verified on 26-05-2026

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

• PowerPoint allows an unlimited number of slides in a presentation.
• There is no fixed or hard-coded slide limit in MS PowerPoint.
• The number of slides depends on system memory (RAM) and file size.
• Very large presentations may slow down performance.

Last verified on 08-06-2026

Explanation

• Linux is based on open-source software.
• It is a Unix-like operating system.
• Created by: Linus Torvalds (1991).
• It is widely used in servers, mobile devices, and supercomputers.

Last verified on 07-06-2026

Explanation

• The SQL command used to retrieve data from a database table is the SELECT statement.
• This command is fundamental to the Data Query Language (DQL) in SQL.

Last verified on 07-06-2026

Explanation

• A Modem (Modulator-Demodulator) converts digital signals into analog signals and vice versa.
• It is used to connect computers to the internet via telephone lines or other networks.

Additional information:

• Switch – connects multiple devices in a network
• Hub – basic network connector
• Repeater – boosts signal strength
• Router – directs internet traffic

Last verified on 19-04-2026