Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Multiple Choice Questions
Q821: What does the operating system do when a process attempts to execute a privileged instruction in non-privileged mode?
- A: It triggers an interrupt to switch the CPU to privileged mode and handles the instruction
- B: A system error occurs
- C: The process is suspended indefinitely
- D: The CPU performs a hardware reset
View Answer
A
Q822: When is the CPU in privileged mode?
- A: When it is first turned on and during the boot process
- B: When running user applications
- C: When executing non-privileged instructions
- D: When connected to the network
View Answer
A
Q823: How does the operating system maintain security during a process’s time slice?
- A: By switching the CPU to non-privileged mode and monitoring for privileged instructions
- B: By allocating more time to processes
- C: By updating system software
- D: By managing hardware resources
View Answer
A
Q824: What is a potential risk if a process can alter the system's timer?
- A: It can extend its time slice and dominate the machine
- B: It can corrupt system files
- C: It can cause hardware malfunctions
- D: It can interfere with network operations
View Answer
A
Q825: What is the consequence of allowing a process to access peripheral devices directly?
- A: The process can read files without supervision from the file manager
- B: The system performance is improved
- C: The network connectivity is enhanced
- D: The CPU's performance is optimized
View Answer
A
Q826: What continues to be an important task for both administrators and operating system design?
- A: Maintaining security and preventing unauthorized access
- B: Improving system speed
- C: Enhancing user interface design
- D: Upgrading hardware components
View Answer
A
Q827: What is the typical range of communication for a personal area network (PAN)?
- A: Less than a few meters
- B: Less than 100 meters
- C: Less than 1 kilometer
- D: Less than 10 kilometers
View Answer
A
Q828: Which network type consists of computers in a single building or building complex?
- A: PAN
- B: LAN
- C: MAN
- D: WAN
View Answer
B
Q829: What does a metropolitan area network (MAN) typically span?
- A: A local community
- B: A single building
- C: A campus
- D: A global network
View Answer
A
Q830: Which network type links machines over a greater distance, possibly across cities or countries?
- A: PAN
- B: LAN
- C: MAN
- D: WAN
View Answer
D