Explanation

Explanation

• Ethical data use means respecting users' privacy and keeping their information safe.
• Protecting user information prevents misuse, theft, or unauthorized access.
• It ensures that data is only used for its intended and approved purpose.
• Organizations build trust with users by handling data responsibly.
• It follows legal and moral guidelines related to data protection and security.

Explanation

• Data authentication is the process of verifying the origin and integrity of data,
• Ensuring that it comes from a legitimate sender and has not been tampered with or altered during transmission. 
• Data origin authentication proves that the stated sender is the source of the data.
• Data integrity ensures the data has not been modified.
• Data encryption (Option B) is a separate mechanism used for confidentiality, not for direct authentication.

Explanation

• Binary search is faster than linear search except for small arrays.
• However, the array must be sorted first to apply binary search.

Explanation

 In most programming languages like C++, Java, and Python:

• false is internally stored as 0
• true is stored as 1

 That’s why false behaves like 0 in mathematical operations.

Explanation

• Ransomware is a type of malware that encrypts user data and demands payment (ransom) to restore access.
• It is a major cybersecurity threat affecting individuals and organizations worldwide.
• Attackers usually demand payment in cryptocurrency.

Last verified on 04-04-2026

Explanation

• Optical Fiber Systems are utilized in Telecommunication Systems to transmit data as light signals through thin glass or plastic fibers.
• It enabling high-speed internet, voice, and data communications over long distances.

Last verified on 03-04-2026

Explanation

• Keyboard → An input device used to enter data and commands.
• Inventor: Christopher Latham Sholes
• Function keys: 12 (F1–F12)
• Alphanumeric keys: A–Z and 0–9
• Punctuation keys: Comma, period, semicolon, etc.
• Special keys: Arrow keys, Caps Lock, Enter, Ctrl, Alt
• Longest key: Spacebar
• Standard keyboard: 101 keys

Last updated on 14-09-2026 by NA

Explanation

• Ctrl + T: Opens a new tab
• Ctrl + N: Opens a new window
• Ctrl + Shift + W: Closes the current window and all tabs
• Ctrl + Q: Closes the current window
• Alt + Right arrow: Opens the next page from your browsing history in the current tab
• Ctrl + F4: Closes the current tab
• Alt + F4: Closes the active window
• Alt + Space then n: Minimizes the current window

Last update 0n 21-07-2026 by NA

Explanation

• Bubble Sort repeatedly compares and swaps adjacent elements until the array is sorted.
• Average case involves roughly n(n-1)/2 comparisons, which gives O(n²) time complexity.
• Best case: O(n) if the array is already sorted (with optimized check).
• Worst case: O(n²) when the array is reverse sorted.

Last verified on 24-03-2026