Explanation

• Binary 11111111 has eight 1s. Add the place values:
• 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1 = 255
• So, 11111111 (binary) = 255 (decimal).

Last verified on 10-07-2026

Explanation

• Type: Operating System (Unix-like)
• Kernel Released: 17 September 1991
• Developer: Linus Torvalds
• License: Open-source (GNU General Public License)
• Common Distributions: Ubuntu, Debian, Fedora, Red Hat, Linux Mint

Last verified on 10-07-2026

Explanation

• Utility Software is designed to maintain, manage, and protect a computer system.
• It helps improve computer performance and keeps the system secure.
• It performs tasks like cleaning files, managing storage, and protecting against viruses.
• It is a type of system software.
• Examples include antivirus, disk cleanup, backup software, disk defragmenter and file management tools.

Last verified on 10-07-2026

Explanation

17² = 17 × 17 = 289  

Now convert 289 to binary:  

289 = 256 + 32 + 1  

256 = 2⁸  

32 = 2⁵  

1 = 2⁰  

Place 1 at 8th, 5th and 0th positions.  

Binary = 1 0001 0001  

So, 100010001

Last verified on 10-07-2026

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