Computer — All MCQs
4795 questions available
Q3301.How many sheets (worksheets) are there in the Excel workbook by default?
Correct Answer: B
By default, older versions of Microsoft Excel open a new workbook containing exactly 3 blank worksheets (Sheet1, Sheet2, Sheet3).
Q3302.A collection of related fields is called _____?
Correct Answer: A
A record (or row/tuple) is a collection of related fields (or attributes) describing a single database entity.
Q3303.The four numbers in an IP address is called?
Correct Answer: B
In IPv4, the address consists of four numbers separated by dots (e.g., 192.168.1.1). Each number is an 8-bit block called an 'octet'.
Q3304.Hardware is best described as _____?
Correct Answer: B
Computer hardware refers to the physical, tangible parts of the system (such as circuits, keyboard, or monitor) that you can touch.
Q3305.In an Entity-Relationship (E-R) diagram, a rectangle represents _____?
Correct Answer: C
In an Entity-Relationship (E-R) diagram, rectangles represent entities, ellipses represent attributes, and diamonds represent relationships.
Q3306.Which of the following is used to describe the characteristics of an object?
Correct Answer: C
An attribute describes the characteristics or properties of an object or entity (e.g., name, age, color) in a database system.
Q3307.The arranging of data in logical sequence is called ______?
Correct Answer: A
Sorting refers to the process of arranging data in a specific logical sequence (such as ascending or descending numerical or alphabetical order).
Q3308.A collection of raw facts and figure is called _____?
Correct Answer: B
Data refers to raw facts, figures, and symbols that have not yet been processed. Once data is processed and organized meaningfully, it becomes information.
Q3309.Another term for Main Memory is ______?
Correct Answer: B
The main memory or primary storage of a computer represents RAM (Random Access Memory), which temporarily stores data and programs currently in use by the CPU.
Q3310.Which of the following is the fastest communication mode?
Correct Answer: B
Full Duplex allows simultaneous two-way communication, making it the fastest and most efficient data transmission mode compared to Simplex or Half Duplex.
Q3311.An identifiable location in memory where data are kept is called _____?
Correct Answer: A
An address is a unique, identifiable location in computer memory used to store and retrieve data.
Q3312.Which storage device offers the highest speed?
Correct Answer: B
Solid State Drives (SSDs) use flash memory chips and have no moving parts, offering significantly faster data access, boot times, and read/write speeds than HDDs or CDs.
Q3313.What type of memory does the CPU directly access?
Correct Answer: A
The CPU directly accesses primary memory (RAM) to fetch and execute instructions with very low latency during computer operations.
Q3314.The CPU cannot store data permanently because _____?
Correct Answer: C
The CPU is a processing unit that contains high-speed temporary registers, but it is not designed for permanent data storage; long-term storage is handled by secondary storage devices.
Q3315.Assembly language is classified as ______?
Correct Answer: B
Assembly language is a low-level programming language that uses mnemonics to represent machine-level instructions, offering close control over hardware components.
Q3316.A CD is read by a laser beam using ______?
Correct Answer: B
A Compact Disc (CD) is an optical storage medium that is read by a laser beam inside an optical disc drive.
Q3317.Which unit in the CPU controls the flow of instructions and data?
Correct Answer: C
The Control Unit (CU) coordinates and directs the flow of data, instructions, and operations within the CPU and other hardware components.
Q3318.Which of the following types of software helps a computer run smoothly?
Correct Answer: B
System software (such as the operating system and drivers) manages hardware resources and provides a platform for applications, ensuring the computer runs smoothly.
Q3319.The binary equivalent of decimal 13 is ______?
Correct Answer: A
To convert decimal 13 to binary: 13/2 = 6 rem 1, 6/2 = 3 rem 0, 3/2 = 1 rem 1, 1/2 = 0 rem 1. Reading remainders bottom-up gives 1101.
Q3320.Which number system is generally adapted in a typical 32-bit computer?
Correct Answer: C
Digital computers naturally operate on the binary (base-2) number system using states of 0 (off) and 1 (on) to process and store all data.