Computer — All MCQs
4795 questions available
Q2381.What does PII stand for in ethics and privacy?
Correct Answer: B
PII stands for Personally Identifiable Information, which refers to any data that can be used to identify a specific individual, such as name, email, or ID number.
Q2382.Which of the following is a type of computer memory that is used to temporarily store data and instructions that are currently being processed?
Correct Answer: A
RAM (Random Access Memory) temporarily stores data and instructions currently in use by the CPU. It is volatile memory.
Q2383.Which Excel feature allows filtering data based on specific criteria without deleting rows?
Correct Answer: B
The Filter feature in Excel displays only rows that meet specific criteria, temporarily hiding the rest without deleting any data.
Q2384.Which type of malware encrypts user data and demands payment for recovery?
Correct Answer: A
Ransomware is a malicious program that encrypts a user's files and demands a ransom payment to decrypt them.
Q2385.In MS PowerPoint, which feature ensues the same font, color, and layout across all slides?
Correct Answer: C
Applying a Design theme or slide master ensures a consistent appearance (fonts, colors, background) across all slides.
Q2386.Which Excel feature allows creating dynamic drop-down lists based on cell values?
Correct Answer: A
Data Validation can restrict entries in a cell and is commonly used to create drop-down lists from a range of cell values.
Q2387.In touch typing, which row of keys is called the base position for fingers?
Correct Answer: B
The Home Row (A, S, D, F, J, K, L, ;) is the baseline row where typists rest their fingers in touch typing.
Q2388.Which shortcut key is used to lock the computer immediately in Windows?
Correct Answer: C
Windows Key + L is the built-in shortcut to lock your Windows computer immediately.
Q2389.In MS Word, which option prevents a document from being edited without permission?
Correct Answer: A
Restrict Editing in MS Word allows you to limit the formatting and editing options of a document, protecting it from unauthorized changes.
Q2390.Which Excel feature allows automatically filling a series like dates or numbers by dragging the mouse?
Correct Answer: C
The Fill Handle (dragging the small square at the bottom-right of a cell) automatically fills continuous series like dates, months, or numbers.
Q2391.Optical Fiber System is utilized in _____?
Correct Answer: C
Optical fiber systems are heavily utilized in modern high-speed telecommunications to transmit voice, data, and video signals as light.
Q2392.How many function keys are there in the keyboard?
Correct Answer: C
Standard computer keyboards have 12 function keys (labeled F1 through F12) across the top row.
Q2393.Which is used to open a new tab?
Correct Answer: B
Ctrl + T is the standard keyboard shortcut used in web browsers to open a new tab.
Q2394.Which of the following is the Average Case Time Complexity fo the Bubble sort algorithm?
Correct Answer: A
Bubble Sort has an average and worst-case time complexity of O(n^2) due to nested passes over the array.
Q2395.Compute the factorial function F(n) = n! for an arbitrary nonnegative Integer n. n! = 1 * 2 * ... * (n-1) * n with 0! = 1 by definition. Which recursive algorithm computes F(n)?
Correct Answer: B
The correct recursive factorial base case is 0! = 1, and the recursive step is n * F(n-1) for n > 0. So, "If n = 0 return 1 else return F(n - 1) * n" is correct.
Q2396.Which of the following is the Preprocessor Directive in C++?
Correct Answer: B
In C++, preprocessor directives start with the # symbol (like #include <iostream>).
Q2397.In which of the following communication mode, each station can both transmit and receive, but not at the same time?
Correct Answer: A
Half-Duplex allows two-way communication, but only one station can transmit at a time (e.g., walkie-talkies).
Q2398.What is the overall time complexity of the merge sort algorithm?
Correct Answer: A
Merge Sort has a consistent time complexity of O(n log n) in all cases (best, average, worst).
Q2399.Which of the following describes the relationship between members of the subclasses and indicates whether it is possible for a member of a superclass to be a member of one, or more than one, subclass?
Correct Answer: A
The disjoint constraint specifies whether subclasses are disjoint (a superclass member belongs to at most one subclass) or overlapping (can belong to multiple subclasses).
Q2400.In which network topology, one long cable acts as a backbone to link all the devices in a network?
Correct Answer: C
In a Bus Topology, a single central cable (backbone) links all devices.