Explanation

Last verified on 05-08-2026

Explanation

• TCP/IP was developed in the 1970s through the pioneering work of Vint Cerf and Robert E. (Bob) Kahn.
• They are widely recognized as the “Fathers of the Internet”.
• TCP provides reliable, ordered delivery of data, while IP handles addressing and routing of packets.
• The foundational TCP/IP work was published in 1974.

Last verified on 09-08-2026

Explanation

• SSD (Solid-State Drive) generally has the highest cost per gigabyte (GB) of storage capacity.

Additional information:

• HDD (Hard Disk Drive) usually provides the lowest cost per GB for large-capacity storage.

Last verified on 09-08-2026

Explanation

• Columns: Run vertically and are identified by letters (A, B, C … AA, AB).

Additional information:

• Rows: Run horizontally and are identified by numbers (1, 2, 3 …).
• Cells: Intersection of a row and column, e.g., A1.
• Fields: In database terminology, a column is often called a field.

Last verified on 09-08-2026

Explanation

• Typing a biography is a typical task performed using a word processor.
• A word processor is software used to create, edit, format, save, and print text documents.
• Examples of word-processing software include Microsoft Word, LibreOffice Writer, and Google Docs.

Last verified on 09-08-2026

Explanation

• Page Up: Move the cursor or page up one screen.

Additional information:

• Ctrl + Home: Move to the top of a document.
  
• Ctrl + End: Move to the bottom of a document.
• Page Down: Move the cursor or page down one screen.

Last verified on 09-08-2026

Explanation

• Charles Babbage is credited with designing the first mechanical computer.
• He is widely regarded as the Father of the Computer.
• Difference Engine → Designed in the 1820s
• Analytical Engine → Described in 1837

Additional information:

• Ada Lovelace → Wrote an algorithm for the Analytical Engine
• Alan Turing → Pioneer of theoretical computer science

Last verified on 09-08-2026

Explanation

• Memory (RAM): Temporary, volatile, fast access
• Storage (HDD/SSD): Permanent, non-volatile, slower than RAM
• Example Memory: RAM in computers (4GB, 8GB, 16GB)
• Example Storage: Hard disk, SSD (256GB, 512GB, 1TB)
• Purpose: Memory = active tasks, Storage = long-term data

Last verified on 17-01-2026

Explanation

• 1 byte = 8 bits; therefore, 4 bytes = 4 × 8 = 32 bits.
• A bit is the smallest unit of digital data.
• It can represent 0 or 1.

Additional information:

• 1 byte = 8 bits
• 2 bytes = 16 bits
• 4 bytes = 32 bits
• 8 bytes = 64 bits
• 1 KB = 1,024 bytes
• 1 MB = 1,024 KB

Last verified on 09-08-2026

Explanation

• 1 Terabyte (TB) = 1000 Gigabytes (GB)

Additional information:

• 1 Gigabyte (GB) = 1000 Megabytes (MB)
• 1 Megabyte (MB) = 1000 Kilobytes (KB)

Last verified on 09-08-2026