Explanation

• PNG, JPEG, and GIF are image file formats used to store pictures.
• They are widely used in websites, graphics, and digital media.
• Each format has different compression and quality features.
• JPEG is best for photos.
• PNG for high-quality images.
• GIF for animations.

Last verified on 19-04-2026

Explanation

• OTP stands for One Time Password.
• It used in banking security systems.
• It is a temporary code sent to the user’s mobile/email.
• Introduced widely in digital banking for secure transactions.
• It is valid for only one login or transaction.
• Helps prevent unauthorized access and fraud.

Last verified on 19-04-2026

Explanation

To find the decimal equivalent of the binary number 1011:

(1 × 2³) + (0 × 2²) + (1 × 2¹) + (1 × 2⁰)

= (1 × 8) + (0 × 4) + (1 × 2) + (1 × 1)

= 8 + 0 + 2 + 1

= 11

Last verified on 12-04-2026

Explanation

• In HTML, frames are used to divide a web page into multiple sections.
• Each section (frame) can display a different HTML document.
• This allows multiple pages to be shown in one browser window.
• Frames help in organizing content like menus, headers, and main pages separately.

Last verified on 12-04-2026

Explanation

• A special-purpose computer is designed to perform a specific task only.
• Wheel alignment machines are built for measuring and adjusting vehicle wheels.
• These computers are not used for general tasks like typing or browsing.
• They are optimized for accuracy and efficiency in a single function.
• Common in industries like automobiles, medical, and manufacturing.

Last verified on 12-04-2026

Explanation

• Microwave Communication uses high-frequency radio waves.
• It requires line-of-sight (direct alignment) between sender and receiver.
• Used for long-distance communication like towers and satellites.
• Signals cannot bend much around obstacles.

Last verified on 12-04-2026

Explanation

• Multitasking OS → Runs multiple tasks simultaneously (time-sharing)
• Single-tasking OS → Runs one task at a time
• Real-time OS → Responds instantly to inputs
• Batch Processing OS → Processes jobs in groups
• Time-sharing OS → Shared CPU time among users

Last verified on 12-04-2026

Explanation

• In an ER (Entity Relationship) Diagram, relationships between entities are shown using a diamond shape.
• Entities are shown as rectangles.
• Attributes are shown as ovals (ellipses).
• The diamond connects entities and describes their relationship.
• This is a standard database design model.

Last verified on 12-04-2026

Explanation

• Phishing is a cyber crime method used to steal personal information.
• Attackers use fake emails, messages, or websites to trick users.
• The goal is to get sensitive data like passwords, bank details, or IDs.

Last verified on 12-04-2026

Explanation

• Windows 10 requires minimum 32 GB storage for installation.
• Earlier versions required less, but updates increased the requirement.
• This space is needed for system files and updates.
• More storage is recommended for smooth performance.
• It is a widely used operating system globally.

Last verified on 12-04-2026