Explanation

• 1 Gigabyte (GB) = 1,024 Megabytes (MB) in the traditional binary convention.
• Kilobyte (KB) is smaller than a megabyte.

Additional information:

• Kilobyte (KB) → 1,024 bytes
• Megabyte (MB) → 1,024 KB
• Gigabyte (GB) → 1,024 MB
• Terabyte (TB) → 1,024 GB

Last verified on 12-10-2026

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