Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
Which type of operating system is specifically designed so that several users can access the resources of the same computer system through separate accounts or terminals?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A multi-user operating system allows multiple users to use the resources of the same computer system.
• It manages separate user sessions, accounts, permissions and shared resources.
• Such systems must coordinate processor time, memory, files and devices among the users.
• It manages separate user sessions, accounts, permissions and shared resources.
• Such systems must coordinate processor time, memory, files and devices among the users.
వివరణ:
Question 2
ప్రశ్న 2
Which statement best describes a single-user operating system?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The term single-user refers primarily to the number of users for whom the operating environment is designed at a given time.
• A single-user system may still support multitasking and run many applications concurrently.
• Single-user and single-task are therefore different classifications.
• A single-user system may still support multitasking and run many applications concurrently.
• Single-user and single-task are therefore different classifications.
వివరణ:
Question 3
ప్రశ్న 3
Which situation most clearly requires a real-time operating system?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A real-time operating system is designed for applications where responses must occur within specified timing constraints.
• Industrial control, instrumentation and similar control systems may depend on predictable response times.
• Correctness in real-time systems can depend on both the logical result and when that result is produced.
• Industrial control, instrumentation and similar control systems may depend on predictable response times.
• Correctness in real-time systems can depend on both the logical result and when that result is produced.
వివరణ:
Question 4
ప్రశ్న 4
A user is editing a document, listening to music and downloading a file during the same period. Which operating-system capability is primarily being demonstrated?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Multitasking allows several programs or tasks to make progress during the same period.
• The operating system rapidly allocates processor time and other resources among active processes.
• A system can therefore be both single-user and multitasking.
• The operating system rapidly allocates processor time and other resources among active processes.
• A system can therefore be both single-user and multitasking.
వివరణ:
Question 5
ప్రశ్న 5
Which statement about single-user and multitasking operating systems is correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• User classification and task-execution classification describe different characteristics of an operating system.
• A personal computer can be used primarily by one interactive user while the operating system runs several applications and background processes.
• Therefore single-user operation does not imply single-task operation.
• A personal computer can be used primarily by one interactive user while the operating system runs several applications and background processes.
• Therefore single-user operation does not imply single-task operation.
వివరణ:
Question 6
ప్రశ్న 6
What is the most important distinguishing requirement of a real-time operating system compared with a general-purpose operating system?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Real-time systems emphasize predictable and bounded response to events.
• Meeting a required deadline may be an essential part of correct system behaviour.
• A real-time system does not necessarily require a GUI, unlimited users or ROM-based file storage.
• Meeting a required deadline may be an essential part of correct system behaviour.
• A real-time system does not necessarily require a GUI, unlimited users or ROM-based file storage.
వివరణ:
Question 7
ప్రశ్న 7
Which of the following best describes a Graphical User Interface?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A GUI provides visual controls such as windows, icons, menus and buttons.
• Users can interact through a mouse, touchpad, touchscreen or keyboard.
• Modern desktop operating systems commonly use graphical interfaces to make interaction easier.
• Users can interact through a mouse, touchpad, touchscreen or keyboard.
• Modern desktop operating systems commonly use graphical interfaces to make interaction easier.
వివరణ:
Question 8
ప్రశ్న 8
Which description most accurately identifies a Command-Line Interface?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A CLI allows the user to interact with the computer by entering textual commands.
• Commands are processed by a command interpreter or shell.
• CLI interaction differs from GUI interaction, which emphasizes graphical objects and pointing.
• Commands are processed by a command interpreter or shell.
• CLI interaction differs from GUI interaction, which emphasizes graphical objects and pointing.
వివరణ:
Question 9
ప్రశ్న 9
Which feature is particularly important in a multi-user operating system?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Multi-user systems must distinguish between users and control their access to shared resources.
• User accounts, authentication and permissions help protect each user's files and system resources.
• Resource management becomes more important, not less important, when many users share a system.
• User accounts, authentication and permissions help protect each user's files and system resources.
• Resource management becomes more important, not less important, when many users share a system.
వివరణ:
Question 10
ప్రశ్న 10
A command such as a file-management instruction is typed at a textual prompt instead of being selected from menus. Which interface is being used?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A textual prompt that accepts typed commands is characteristic of a Command-Line Interface.
• A command interpreter or shell interprets the entered command.
• GUI operations instead commonly involve windows, icons, menus and graphical controls.
• A command interpreter or shell interprets the entered command.
• GUI operations instead commonly involve windows, icons, menus and graphical controls.
వివరణ:
Question 11
ప్రశ్న 11
Consider the following statements about multitasking:
1. More than one program can make progress during the same period.
2. The operating system may switch processor time among runnable tasks.
3. Multitasking necessarily means that each program has its own separate physical CPU.
4. Resource scheduling is important for multitasking.
Which statements are correct?
1. More than one program can make progress during the same period.
2. The operating system may switch processor time among runnable tasks.
3. Multitasking necessarily means that each program has its own separate physical CPU.
4. Resource scheduling is important for multitasking.
Which statements are correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Multitasking permits several programs to make progress by sharing system resources over time.
• The operating system can schedule and switch processor execution among runnable tasks.
• A separate physical CPU is not required for every task, so Statement 3 is incorrect.
• The operating system can schedule and switch processor execution among runnable tasks.
• A separate physical CPU is not required for every task, so Statement 3 is incorrect.
వివరణ:
Question 12
ప్రశ్న 12
Which statement best describes a hard real-time system?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• In a hard real-time system, certain deadlines are mandatory rather than merely desirable.
• Failure to complete a critical operation within the required time can be considered a system failure.
• Such behaviour may be required in safety-critical or tightly controlled applications.
• Failure to complete a critical operation within the required time can be considered a system failure.
• Such behaviour may be required in safety-critical or tightly controlled applications.
వివరణ:
Question 13
ప్రశ్న 13
Which scenario best represents a multi-user operating environment?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A multi-user system supports distinct users accessing the same system resources through separate sessions or terminals.
• The operating system manages authentication, permissions and resource allocation among them.
• Running several applications for one user represents multitasking, not necessarily multi-user operation.
• The operating system manages authentication, permissions and resource allocation among them.
• Running several applications for one user represents multitasking, not necessarily multi-user operation.
వివరణ:
Question 14
ప్రశ్న 14
Which statement correctly distinguishes multitasking from multi-user operation?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Multitasking classifies a system according to its ability to manage multiple active tasks or processes.
• Multi-user classification concerns the ability to support multiple users of the system.
• A system may possess both characteristics simultaneously.
• Multi-user classification concerns the ability to support multiple users of the system.
• A system may possess both characteristics simultaneously.
వివరణ:
Question 15
ప్రశ్న 15
Which operating-system type is most appropriate where predictable response to external events is more important than maximizing average user convenience?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Real-time operating systems are intended for applications where events must be handled within specified time constraints.
• Predictability and deadline compliance are more important than simply maximizing average responsiveness.
• Such systems are common in control and monitoring applications.
• Predictability and deadline compliance are more important than simply maximizing average responsiveness.
• Such systems are common in control and monitoring applications.
వివరణ:
Question 16
ప్రశ్న 16
Which of the following is an advantage commonly associated with a GUI for ordinary users?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• GUIs expose common actions through recognizable windows, icons, menus and buttons.
• This can make many operations easier to learn for users who do not remember command syntax.
• A GUI does not eliminate system software or guarantee that every program executes faster.
• This can make many operations easier to learn for users who do not remember command syntax.
• A GUI does not eliminate system software or guarantee that every program executes faster.
వివరణ:
Question 17
ప్రశ్న 17
Assertion (A): A command-line interface can be useful for repetitive administrative tasks.
Reason (R): Text commands can often be combined in command files or scripts to automate repeated operations.
Choose the correct answer.
Reason (R): Text commands can often be combined in command files or scripts to automate repeated operations.
Choose the correct answer.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Command-line environments permit operations to be represented as textual commands.
• Repetitive command sequences can often be saved and executed through scripts or command files.
• Therefore both statements are true and the Reason correctly explains the Assertion.
• Repetitive command sequences can often be saved and executed through scripts or command files.
• Therefore both statements are true and the Reason correctly explains the Assertion.
వివరణ:
Question 18
ప్రశ్న 18
A process-control computer must read a sensor and activate a safety mechanism within a guaranteed maximum response period. Which feature should be given the highest priority when selecting its operating system?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• The requirement specifies that a response must occur within a maximum allowed time.
• Predictable bounded timing is a central requirement of real-time systems.
• Cosmetic desktop features have no importance compared with satisfying the stated timing constraint.
• Predictable bounded timing is a central requirement of real-time systems.
• Cosmetic desktop features have no importance compared with satisfying the stated timing constraint.
వివరణ:
Question 19
ప్రశ్న 19
Match List I with List II:
List I
(a) Single-user OS
(b) Multi-user OS
(c) Multitasking OS
(d) Real-time OS
List II
1. Supports multiple tasks making progress during the same period
2. Designed primarily for one interactive user at a time
3. Provides responses within specified timing constraints
4. Supports multiple users sharing system resources
Choose the correct matching code.
List I
(a) Single-user OS
(b) Multi-user OS
(c) Multitasking OS
(d) Real-time OS
List II
1. Supports multiple tasks making progress during the same period
2. Designed primarily for one interactive user at a time
3. Provides responses within specified timing constraints
4. Supports multiple users sharing system resources
Choose the correct matching code.
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A single-user OS is designed primarily around one interactive user, giving (a)-2.
• A multi-user OS supports several users, while multitasking permits several tasks to progress, giving (b)-4 and (c)-1.
• A real-time OS emphasizes responses within required timing constraints, giving (d)-3.
• A multi-user OS supports several users, while multitasking permits several tasks to progress, giving (b)-4 and (c)-1.
• A real-time OS emphasizes responses within required timing constraints, giving (d)-3.
వివరణ:
Question 20
ప్రశ్న 20
Consider the following statements:
1. GUI and CLI are methods of user interaction with an operating system.
2. A single-user operating system may support multitasking.
3. A multi-user operating system must manage access to shared resources among users.
4. Real-time operating systems emphasize predictable timing behaviour.
Which statements are correct?
1. GUI and CLI are methods of user interaction with an operating system.
2. A single-user operating system may support multitasking.
3. A multi-user operating system must manage access to shared resources among users.
4. Real-time operating systems emphasize predictable timing behaviour.
Which statements are correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• GUI and CLI are two common styles of human-computer interaction.
• Single-user and multitasking describe different system properties and can coexist.
• Multi-user systems require resource control, while real-time systems emphasize predictable response timing, so all four statements are correct.
• Single-user and multitasking describe different system properties and can coexist.
• Multi-user systems require resource control, while real-time systems emphasize predictable response timing, so all four statements are correct.
వివరణ:
Answer Key సమాధానాల పట్టిక
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Question 1 ప్రశ్న 1Answer: C. Multi-user operating system సమాధానం: C.
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Question 2 ప్రశ్న 2Answer: A. It is designed primarily for one user to interact with the system at a time. సమాధానం: A.
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Question 3 ప్రశ్న 3Answer: D. Controlling an industrial process in which sensor events must be handled within defined timing limits సమాధానం: D.
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Question 4 ప్రశ్న 4Answer: B. Multitasking సమాధానం: B.
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Question 5 ప్రశ్న 5Answer: B. A system can be designed for one interactive user while still allowing that user to run multiple applications concurrently. సమాధానం: B.
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Question 6 ప్రశ్న 6Answer: C. It must provide sufficiently predictable responses within specified timing constraints. సమాధానం: C.
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Question 7 ప్రశ్న 7Answer: A. An interface based on visual elements such as windows, icons, menus, buttons and pointers సమాధానం: A.
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Question 8 ప్రశ్న 8Answer: D. It allows users to enter textual commands according to a defined command syntax. సమాధానం: D.
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Question 9 ప్రశ్న 9Answer: A. Separate user accounts and controlled sharing of system resources సమాధానం: A.
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Question 10 ప్రశ్న 10Answer: D. Command-Line Interface సమాధానం: D.
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Question 11 ప్రశ్న 11Answer: C. 1, 2 and 4 only సమాధానం: C.
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Question 12 ప్రశ్న 12Answer: B. Missing a specified critical deadline can constitute a system failure. సమాధానం: B.
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Question 13 ప్రశ్న 13Answer: D. Several authorized users access applications and files on the same central computer through separate sessions. సమాధానం: D.
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Question 14 ప్రశ్న 14Answer: B. Multitasking concerns execution of multiple tasks, whereas multi-user operation concerns access by multiple users. సమాధానం: B.
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Question 15 ప్రశ్న 15Answer: C. Real-time operating system సమాధానం: C.
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Question 16 ప్రశ్న 16Answer: A. It completely eliminates the need for system software. సమాధానం: A.
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Question 17 ప్రశ్న 17Answer: C. Both A and R are true, and R is the correct explanation of A. సమాధానం: C.
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Question 18 ప్రశ్న 18Answer: D. Deterministic or predictably bounded response time సమాధానం: D.
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Question 19 ప్రశ్న 19Answer: B. (a)-2, (b)-4, (c)-1, (d)-3 సమాధానం: B.
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Question 20 ప్రశ్న 20Answer: A. 1, 2, 3 and 4 సమాధానం: A.