Computer — All MCQs
4795 questions available
Q1681.What type of communication is used between a computer and a printer?
Correct Answer: C
Communication from a computer to a traditional printer is Simplex (one-way only), as data flows solely to the printer with no backward channel.
Q1682.An entity is anything about which we store data. This statement is
Correct Answer: A
In relational database design, an entity is any real-world object (person, place, or thing) about which data is captured and stored.
Q1683.Which operator is used as the increment operator in C/C++?
Correct Answer: B
The '++' operator is the standard increment operator in C and C++, which adds exactly 1 to its operand.
Q1684.The statement A += B is equivalent to
Correct Answer: B
The '+=' operator is a compound assignment operator. The expression A += B evaluates to A = A + B.
Q1685.Which function is used to close a file in C?
Correct Answer: C
fclose() is the standard C library function used to flush file buffers and close an open file stream safely.
Q1686.What is the output of a function that calculates the cube of 5?
Correct Answer: D
The cube of 5 is calculated as 5 x 5 x 5, which is equal to 125.
Q1687.A void function in C generally
Correct Answer: C
A function declared with a 'void' return type in C does not return any value back to the caller.
Q1688.If a function adds x + y, what will be the output when x = 2 and y = 3?
Correct Answer: B
The arithmetic sum of 2 and 3 evaluates to 5.
Q1689.Which security technique converts readable data into an unreadable format to protect information?
Correct Answer: C
Encryption is the process of converting plaintext into an unreadable ciphertext format to protect data confidentiality.
Q1690.Which of the following is a type of computer network that covers a large geographic area, such as a country?
Correct Answer: C
A Wide Area Network (WAN) spans across a large geographic area such as a country or continent. The Internet is the largest example of a WAN.
Q1691.Which of the following is NOT an Input device?
Correct Answer: C
Monitors and Speakers are classified as output devices because they present visual and auditory information to users.
Q1692.What is the primary function of an Operating System kernel?
Correct Answer: A
The kernel is the core program of an OS, responsible for managing system memory, CPU cycles, and I/O device access.
Q1693.Which protocol is used to access email from a mail server?
Correct Answer: C
IMAP (Internet Message Access Protocol) is used to retrieve and manage emails directly on a mail server, allowing syncing across devices.
Q1694.How can you show hidden files and folders in Windows?
Correct Answer: A
Hidden files can be shown by going to File Explorer, opening the 'View' menu, choosing 'Show', and checking 'Hidden items'.
Q1695.Email is used for?
Correct Answer: A
Email stands for Electronic Mail, which is primary used for sending and receiving electronic messages across the Internet.
Q1696.Which view is used to sort and rearrange slides in Microsoft PowerPoint?
Correct Answer: B
Slide Sorter View displays all presentation slides as small thumbnails, making it easy to drag and drop to sort and rearrange them.
Q1697.Email stands for?
Correct Answer: B
Email stands for Electronic Mail, representing a method of exchange of digital messages over networks.
Q1698.How can you change the order of slides in Microsoft PowerPoint?
Correct Answer: B
You can change slide order easily by dragging and dropping them into your preferred sequence within the Left Slides pane or Slide Sorter view.
Q1699.What is information about data called?
Correct Answer: B
Metadata is defined structurally as data about data, providing descriptions or summaries of information such as file size, type, or author.
Q1700.Which feature in the Home tab is used to add bullets and numbering?
Correct Answer: C
Bullets and Numbering options are located in the Paragraph group of the Home ribbon in MS Word.