Computer — All MCQs
4795 questions available
Q4741.Which type of utility software is specifically designed to scan, detect, and remove malicious code (culprit code) from a computer system?
Correct Answer: A
Antivirus programs are designed to protect systems by identifying, isolating, and removing computer viruses, worms, and trojans.
Q4742.What type of network security system (implemented in hardware or software) inspects all incoming and outgoing data packets?
Correct Answer: A
A firewall filters and monitors all network packets to prevent unauthorized access based on a pre-defined set of security rules.
Q4743.What term describes the low-level, permanent software coded directly into a computer's non-volatile ROM BIOS chip?
Correct Answer: A
Firmware is permanent software programmed into non-volatile hardware memory (like ROM or Flash chips) to manage device startup.
Q4744.Which of the following features is NOT a standard capability or property of Microsoft PowerPoint?
Correct Answer: C
Microsoft PowerPoint does not support printing writer comments on slides natively (this is a feature of MS Word), though it can print slides, handouts, and notes.
Q4745.What is the numerical base of the octal number system used in computing?
Correct Answer: B
The octal number system is base 8, representing values using exactly eight distinct digits: 0, 1, 2, 3, 4, 5, 6, and 7.
Q4746.What is a hardware box or chassis that houses multiple hard disk drives combined together called?
Correct Answer: A
A collection of multiple hard disk drives grouped together in a single system to provide storage or RAID is called a Hard Disk Array.
Q4747.Which of the following physical components is absolutely necessary to house and execute the BIOS program?
Correct Answer: A
The BIOS is low-level firmware permanently stored on a non-volatile ROM/Flash chip integrated directly onto the motherboard.
Q4748.In computer science and digital logic, how many unique elements can exist within a Boolean set?
Correct Answer: B
A Boolean set contains exactly two elements: 1 (representing True/ON) and 0 (representing False/OFF).
Q4749.What is the default data type of a fractional decimal value like 163.23 in programming?
Correct Answer: C
Fractional numbers with decimals are standardly represented as float or double-precision floating-point values.
Q4750.In the Microsoft Windows operating system, what is the function of the 'Windows Key + M' shortcut?
Correct Answer: A
Pressing the Windows Key and letter M simultaneously minimizes all active application windows to the taskbar.
Q4751.A standard computer Byte is fundamentally constructed from which of the following elements?
Correct Answer: A
A Byte is a standardized unit of digital data formed by a contiguous array of exactly 8 bits.
Q4752.In Microsoft Word, what error indication appears on the screen when duplicate consecutive words are typed?
Correct Answer: A
Word highlights duplicate repeated words (e.g. 'the the') with a red wavy underline, treating it as a spelling anomaly.
Q4753.For what primary reasons are computers deployed in modern business offices?
Correct Answer: C
Office automation via computers aims to minimize physical labor, streamline document workflows, and save operational time.
Q4754.What is the standard, globally accepted TCP port number used for Apache web servers and HTTP web traffic?
Correct Answer: A
TCP port 80 is the default port designated for unencrypted HTTP web browsing traffic, commonly used by Apache and IIS.
Q4755.What type of computer network has its nodes interconnected using physical hardware switches?
Correct Answer: B
A Switched Network routes data between devices using dedicated hardware switches that forward packets to specific target destinations.
Q4756.On which layer of the standard networking architecture do IP and DNS routes primarily operate?
Correct Answer: B
IP routing and name resolution paths are processed at the Network Layer (Layer 3 of the OSI model).
Q4757.Which keyboard shortcut can be used in Microsoft PowerPoint to quickly open an existing presentation?
Correct Answer: C
Pressing Ctrl + O is the universal keyboard shortcut used to access the Open file dialog box in Microsoft Office.
Q4758.In MS Excel, what is the correct menu selection to add mathematical symbols that can be typed from a keyboard?
Correct Answer: B
Users can insert custom symbols, equations, and mathematical signs by choosing Symbol under the Insert tab.
Q4759.Which built-in Microsoft Word feature automatically corrects spelling mistakes and typos as you type?
Correct Answer: B
The AutoCorrect feature automatically replaces misspelled words or shorthand abbreviations with correct text as you type.
Q4760.Which technology allows a handwritten document to be scanned and instantly transmitted over phone lines globally?
Correct Answer: D
Facsimile (fax) machines scan printed or handwritten text and transmit the resulting image signals over telephone networks.