Explanation

•  HDD stands for hard disk drive (HDD)
  • HDD is a data storage device.
  • It stores the operating system, software, and files.
  • It uses magnetic storage technology.

Last updated: 27 OCT 2026 

Explanation

• Router: Connects different networks and forwards data packets between them.

Additional information:

• Switch: Connects devices within a local area network (LAN).
• Hub: Broadcasts data to all connected devices.
• Modem: Converts signals to enable internet connectivity.

Explanation

• A hybrid topology combines two or more network topologies, such as star and bus.
• It offers flexibility and scalability.

Additional information:

• Star Topology: All devices connect to a central hub or switch.
• Bus Topology: All devices share a common backbone cable.
• Ring Topology: Devices are connected in a circular arrangement.

Explanation

• HTML is the standard markup language used to create and structure web pages.
• HTML defines elements such as headings, paragraphs, images, links, and lists.
• HTTP is a protocol used to transfer web resources between clients and servers.

Last verified on 12-10-2026

Explanation

• HTML: Hypertext Markup Language.
• Purpose: Creates and structures web pages.
• HTML File Extension: .html or .htm.
• It uses tags to structure content such as headings, paragraphs, images, links, and tables.

Last verified on 11-08-2026

Explanation

Worm — spreads automatically across a network.

• Self-propagating — no user action needed
• Exploits network vulnerabilities or weak credentials to copy itself
• Contrast: a virus needs a host file + user action; a Trojan doesn't self-replicate
• Examples: WannaCry, Morris worm

Explanation

• Full form: Hyper Text Transfer Protocol Secure
• Security layer: SSL/TLS encryption
• Purpose: Secure data transfer on the internet
• Default port: 443
• Used in: Banking, e-commerce, login systems

Last verified on 23-06-2026

Explanation

• CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart.
• Its main purpose is to distinguish human users from automated bots.
• It helps protect websites against spam, fake registrations, and automated attacks.
• Common CAPTCHA tests include selecting images, identifying distorted text, and completing simple verification tasks.

Last verified on 09-10-2026

Explanation

• Pixel printer is not a standard type of printer.

Additional information:

• Laser printer uses laser technology and toner to print documents.
• Dot matrix printer prints by striking pins against an ink ribbon.
• Inkjet printer sprays tiny droplets of ink onto paper.

Last verified on 09-10-2026

Explanation

• Hybrid computer processes both analog and digital signals.
• It combines the features of analog and digital computers.
• Used in medical equipment, scientific research, and industrial systems.