Computer — All MCQs
4795 questions available
Q1721.Which programming language is commonly used for mobile app development?
Correct Answer: A
Java is commonly used for developing mobile applications, particularly the native platform code for Android devices.
Q1722.Which is the smallest unit of memory/data in computer?
Correct Answer: A
A bit (binary digit) representing a 0 or a 1 is the absolute smallest unit of digital memory.
Q1723.Which of the following is not a high-level programming language?
Correct Answer: D
Machine Language and Assembly language represent low-level programming languages that map directly to physical hardware architectures.
Q1724.Which of the following is not a correct method of editing the contents of a cell in MS Excel?
Correct Answer: B
Pressing the Alt key alone is used for window shortcut navigation, not for editing active Excel cells (which is done via F2, double-clicking, or clicking the Formula Bar).
Q1725.Which keys is/are used to lock the keyboard?
Correct Answer: C
The Windows Logo Key + L is used to lock the Windows user account and keyboard screen instantly.
Q1726.Which protocol assigns IP address to the client connected in the internet?
Correct Answer: C
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, default gateways, and other network configuration parameters to devices connected to a IP network.
Q1727.AI stands for ______?
Correct Answer: B
AI stands for Artificial Intelligence. It refers to machines or systems that mimic human intelligence to perform cognitive tasks, learn from experience, and solve complex problems.
Q1728.Which keyboard shortcut key is used to edit the formula or the selected cell in MS Excel?
Correct Answer: A
Pressing F2 on your keyboard allows you to edit the active cell or formula directly inside the cell in Microsoft Excel.
Q1729.Who is called the Father of Internet?
Correct Answer: A
Vinton Gray Cerf (Vint Cerf) is widely recognized as the "Father of the Internet" for co-designing the TCP/IP protocols and the architecture of the Internet.
Q1730.What is the function of the Shift + F10 shortcut key in Microsoft Office (Excel/Access)?
Correct Answer: C
Shift + F10 displays the shortcut (context) menu for the selected item, performing the exact same action as a right-click with a mouse.
Q1731.What is the shortcut Key for justifying the text in MS Word?
Correct Answer: A
Ctrl + J applies justify alignment to the selected paragraph, spreading the text evenly between the left and right page margins.
Q1732.Which break is used to create different headers on different pages in MS Word?
Correct Answer: C
A Section Break allows users to split a document into different formatting sections, which is necessary to apply different headers, footers, page numbers, or orientations.
Q1733.Ctrl + Shift + F6 = ______?
Correct Answer: A
In Microsoft Word, pressing Ctrl + Shift + F6 switches to the previous open document window when multiple files are open simultaneously.
Q1734.What is the function of Alt + Shift + F2 in MS Word?
Correct Answer: A
Alt + Shift + F2 is a keyboard shortcut used to open the Save As dialog box to save the current document under a new name, format, or location.
Q1735.Crimes committed using computers and the internet are called?
Correct Answer: A
Cybercrime refers to criminal activities that utilize computers, network connections, or the internet to commit theft, fraud, identity theft, or system attacks.
Q1736.In cybersecurity, which type of malware blocks a user's files and demands money to recover them?
Correct Answer: A
Ransomware is a dangerous class of malware that encrypts the user's data files or locks the system, demanding a ransom payment to release the decryption key.
Q1737.What is the purpose of DNS (Domain Name System) in computer networks?
Correct Answer: B
DNS (Domain Name System) translates human-friendly domain names (e.g., google.com) into numerical IP addresses used by computers to identify each other on the network.
Q1738.Which sorting algorithm has the best worst-case time complexity?
Correct Answer: A
Merge Sort features a guaranteed time complexity of O(n log n) in its worst, average, and best cases, which is highly efficient compared to Bubble or Selection Sort (O(n²)).
Q1739.Which function calculates the largest value in a set of numbers in Excel?
Correct Answer: D
The MAX (Maximum) function in MS Excel compares a set of numerical values in a range and returns the highest/largest value.
Q1740.How long is an IPv4?
Correct Answer: C
An IPv4 address is 32 bits long, divided into four 8-bit octets represented in dotted-decimal notation (such as 192.168.1.1).