Computers and IT MCQs
Computer Awareness Questions and Quiz for Banking, IBPS, RRB, RBI, SBI, NABARD examinations of 2024-2025. Computer Awareness MCQs for Competitive Exams. GKToday Computer Awareness for IBPS PO, IBPS Clerk, Bank PO, Bank Clerk and other entrance / competitive examinations.
21. Which of the following is a display device in which images are produced when an electron beam strikes a phosphorescent surface?
[A] CRT
[B] LCD
[C] LED
[D] All of the Above
Show Answer
Correct Answer: A [CRT]
Notes:
A cathode ray tube (CRT) is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface. Most desktop computer displays make use of CRTs.
22. Which of the following is the first layer of software loaded into computer memory when it starts up?
[A] Device Driver
[B] Operating System
[C] Language Translator
[D] System Utilities
Show Answer
Correct Answer: B [Operating System]
Notes:
An operating system is a system software that manages computer hardware and software resources and provides common services for computer programs.
23. Which of the following are real time operating system?
[A] VxWorks
[B] WindowsCE
[C] RTLinux
[D] All of the Above
Show Answer
Correct Answer: D [All of the Above]
Notes:
A real-time operating system is any operating system intended to serve real-time applications that process data as it comes in. It is an operating system that guarantees a certain capability within a specified time constraint.
24. Which of the following are the most important criteria for measuring the performance of an Operating system?
[A] Waiting Time
[B] Turnaround Time
[C] Both a and b
[D] System Clock
Show Answer
Correct Answer: C [Both a and b]
Notes:
The CPU efficiency/input decreases as the turnaround time/ waiting time of the processor increases. it is desirable to have less turnaround time and waiting time for all processes.
25. An assembler is a program that converts assembly language into machine code. Which of the following is not a type of assembler ?
[A] One pass
[B] Two pass
[C] Load and Go
[D] Three pass
Show Answer
Correct Answer: D [Three pass]
Notes:
An assembler is a program that translates assembly language into machine language. There are many types of assemblers .Some of them are one pass assembler, two pass assemble, laod and go assembler etc.
26. Which of the following are the features of a Spreadsheet?
[A] Layers and Lines
[B] Rows and Columns
[C] Layers and Planes
[D] Height and Width
Show Answer
Correct Answer: B [Rows and Columns]
Notes:
A spreadsheet is an interactive computer application for organization, analysis and storage of data in tabular form. The program operates on data entered in cells of a table.
27. What is the name given to the special type of stored procedure that automatically executes when an event occurs in the database server?
[A] Deadlock
[B] Trigger
[C] Instance
[D] Rollback
Show Answer
Correct Answer: B [Trigger]
Notes:
A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database.
28. What is the time needed by each device on a network, to hold the message before processing, called as?
[A] Propagation time
[B] Queuing time
[C] Transmission time
[D] Jitter
Show Answer
Correct Answer: B [Queuing time]
Notes:
The time needed for each intermediate or end device to hold the message before it can be processed. The queuing time is not constant as it changes with the load imposed on the network.
29. What is the maximum bandwidth limit that a CAT2 cable can support?
[A] upto 1 Mbps
[B] upto 4 Mbps
[C] upto 10 Mbps
[D] upto 100 Mbps
Show Answer
Correct Answer: B [upto 4 Mbps]
Notes:
Category 2, also known as CAT2, is a type of ethernet cable which supports speeds up to 4 Mbps. Mostly used in token ring networks, it surpasses Category 1 cable which has a maximum data transmission speed of upto 1 Mbps. CAT2 cable gave people a significant improvement in data speeds during its widespread use.
30. Which of these waves is most commonly used by wireless mouse to communicate?
[A] Infrared
[B] Microwaves
[C] Radio waves
[D] None of the above
Show Answer
Correct Answer: A [Infrared]
Notes:
Infrared waves are used for communication for very short distances. These are most commonly used in TV remotes, wireless mouse, keyboard, printer, etc.
