Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Chapter: 58
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
Correct Answer:
A
Chapter: 58
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
Correct Answer:
A
Chapter: 58
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
Correct Answer:
A
Chapter: 58
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
Correct Answer:
A
Chapter: 58
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
Correct Answer:
A
Chapter: 58
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
Correct Answer:
A
Chapter: 59
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
Correct Answer:
A
Chapter: 59
Q828:
Which network type consists of computers in a single building or building complex?
A. PAN
B. LAN
C. MAN
D. WAN
Correct Answer:
B
Chapter: 59
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
Correct Answer:
A
Chapter: 59
Q830:
Which network type links machines over a greater distance, possibly across cities or countries?
A. PAN
B. LAN
C. MAN
D. WAN
Correct Answer:
D
Chapter: 59
Q831:
What is a key characteristic of an open network?
A. It uses freely circulated designs and standards
B. It is controlled by a specific entity
C. It requires license fees for use
D. It has restricted applications
Correct Answer:
A
Chapter: 59
Q832:
What is an example of a closed or proprietary network?
A. The Internet
B. Novell's proprietary systems
C. TCP/IP protocol suite
D. Ethernet
Correct Answer:
B
Chapter: 59
Q833:
Which protocol suite governs communication throughout the Internet?
A. TCP/IP protocol suite
B. HTTP protocol suite
C. FTP protocol suite
D. SMTP protocol suite
Correct Answer:
A
Chapter: 59
Q834:
What is a common feature of a bus topology?
A. Machines are all connected to a common communication line
B. A central machine coordinates all communication
C. A wireless access point serves as a focal point
D. Each machine connects to every other machine directly
Correct Answer:
A
Chapter: 59
Q835:
Which network topology was popularized by Ethernet in the 1990s?
A. Bus topology
B. Star topology
C. Tree topology
D. Ring topology
Correct Answer:
A
Chapter: 59
Q836:
What is a central focal point in a star topology called?
A. Access point (AP)
B. Router
C. Switch
D. Hub
Correct Answer:
A
Chapter: 59
Q837:
When did the star topology start evolving?
A. 1970s
B. 1980s
C. 1990s
D. 2000s
Correct Answer:
A
Chapter: 59
Q838:
What kind of network is used in wireless communication where the central machine is an access point?
A. Star topology
B. Bus topology
C. Ring topology
D. Tree topology
Correct Answer:
A
Chapter: 59
Q839:
How does the star topology differ from the bus topology in terms of machine connectivity?
A. In the star topology, machines are connected to a central point; in the bus topology, they connect to a common line
B. A central point is used in the bus topology, while machines connect directly in the star topology
C. Machines in both topologies connect directly to each other
D. All machines are connected in a ring in both topologies
Correct Answer:
A
Chapter: 59
Q840:
Which topology evolved from a large central computer serving many users?
A. Star topology
B. Bus topology
C. Ring topology
D. Tree topology
Correct Answer:
A