S.Y.C.S Operating System Internal Exam 2017

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  • 1/30 Questions

    ______ is the most common of the User interfaces, and the most user friendly.

    • GUI
    • CLI
    • ABC
    • Server interface
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About This Quiz

This quiz from the S. Y. C. S Operating System internal exam 2017 assesses key concepts such as the role of the operating system, process management, and system modes. It is designed to evaluate understanding of fundamental OS mechanisms and their application, crucial for students in computer science.

S.Y.C.S Operating System Internal Exam 2017 - Quiz

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  • 2. 

    _________ is the interface between user and hardware.

    • Operating system

    • Kernel

    • Bit

    • Thread

    Correct Answer
    A. Operating system
    Explanation
    The operating system acts as the interface between the user and the hardware. It provides a platform for users to interact with the computer system and manages the hardware resources. It allows users to run applications, access files, and perform various tasks on the computer. The operating system also handles input and output operations, manages memory, and schedules tasks for efficient execution. Therefore, the operating system serves as the bridge between the user and the underlying hardware components of the computer system.

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  • 3. 

    The ___________ is the activity of the process manager that handles the removal of the running process from the CPU and the selection of another process on the basis of a particular strategy. 

    • Process scheduling

    • Execution

    • Threading

    • Waiting

    Correct Answer
    A. Process scheduling
    Explanation
    Process scheduling is the activity of the process manager that handles the removal of the running process from the CPU and the selection of another process on the basis of a particular strategy. This involves determining which process should be given access to the CPU next, based on factors such as priority, time quantum, and scheduling algorithms. By efficiently managing the allocation of CPU time to different processes, process scheduling helps optimize the overall performance and utilization of the system.

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  • 4. 

    Browser-based computing is a term denoting use of the _________ to perform computing tasks. 

    • Web browsers

    • Timer

    • Server browser

    • Thread

    Correct Answer
    A. Web browsers
    Explanation
    Browser-based computing refers to the use of web browsers to perform computing tasks. Web browsers are software applications that allow users to access and interact with information on the internet. They provide a platform for running web-based applications and executing tasks such as displaying websites, running scripts, and handling user input. Therefore, web browsers are the correct answer as they are the primary tool used for browser-based computing.

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  • 5. 

    ______ processes are waiting to have the processor allocated to them by the operating system so that they can run.

    • Ready

    • Running

    • Discard

    • Crash

    Correct Answer
    A. Ready
    Explanation
    The term "ready" in the context of operating systems refers to processes that are waiting to be allocated the processor by the operating system in order to execute their tasks. These processes are in a state where they are prepared and capable of running, but are waiting for their turn to be scheduled by the operating system.

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  • 6. 

    ___________ mode is also called as system mode.

    • Kernel

    • User

    • Job

    • Pcb

    Correct Answer
    A. Kernel
    Explanation
    The correct answer is kernel. The kernel mode is also referred to as the system mode. The kernel is the core component of an operating system that manages system resources and provides essential services for other software. In kernel mode, the operating system has unrestricted access to the hardware and can execute privileged instructions. This mode is reserved for the operating system and trusted system processes.

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  • 7. 

    In zero capacity queue has a maximum length of _____

    • 0

    • N

    • Finite

    • Infinite

    Correct Answer
    A. 0
    Explanation
    A zero capacity queue has a maximum length of 0 because it cannot hold any elements. This means that no items can be added to the queue, and therefore it will always have a length of 0.

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  • 8. 

    __________ communicate, control and monitor the device driver.

    • Device management

    • Process management

    • Memory management

    • Server

    Correct Answer
    A. Device management
    Explanation
    Device management is responsible for communicating, controlling, and monitoring the device driver. This involves tasks such as detecting and configuring devices, allocating system resources to them, and handling device errors and conflicts. Device management ensures that devices are properly functioning and allows the operating system to interact with them effectively. This includes managing input/output operations, device drivers, and device configurations.

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  • 9. 

    Medium term scheduler is nothing but the _______

    • Swapping

    • Threading

    • Waiting

    • Running

    Correct Answer
    A. Swapping
    Explanation
    The medium-term scheduler is responsible for swapping processes from main memory to secondary storage. This allows for efficient memory management by temporarily removing processes that are not actively running from the main memory, freeing up space for other processes to be loaded. This swapping process helps prevent memory congestion and ensures that the system runs smoothly by balancing the number of processes in memory. Therefore, the correct answer is "swapping".

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  • 10. 

    In peer to peer computing every client and servers are not distinguished from each other they act as all nodes and considered as ______

    • Peers

    • Clients

    • Servers

    • Nodes

    Correct Answer
    A. Peers
    Explanation
    In peer to peer computing, every client and server are not distinguished from each other. They all act as equal nodes and are considered as peers. In this decentralized network architecture, each node can function both as a client and a server, sharing resources and services with other nodes in the network. This allows for a more efficient and distributed system where each node has equal capabilities and responsibilities.

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  • 11. 

    _____ is a collection of computers which are used to process and exchange the information to solve various types of computing problems. 

    • Computing Environment

    • Scheduling

    • Multithreading

    • Multiprogramming

    Correct Answer
    A. Computing Environment
    Explanation
    A computing environment refers to a collection of computers that are interconnected and work together to process and exchange information. This environment is utilized to solve various types of computing problems by utilizing the combined processing power and resources of the interconnected computers.

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  • 12. 

    ____________ is a function of operating system.

    • Memory management

    • Server

    • User

    • Kernel

    Correct Answer
    A. Memory management
    Explanation
    Memory management is a function of the operating system that is responsible for managing the primary memory of a computer system. It involves allocating and deallocating memory to different processes, ensuring efficient utilization of memory resources, and preventing conflicts between processes. The operating system uses memory management techniques such as paging, segmentation, and virtual memory to provide a logical and organized memory space for programs and data. Without memory management, the operating system would not be able to effectively manage and allocate memory, leading to issues such as memory leaks, fragmentation, and poor system performance.

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  • 13. 

    In many to one model many ________ level threads are connected to the one ______ level thread.

    • User-kernel

    • Kernel-user

    • User-user

    • Kernel-kernel

    Correct Answer
    A. User-kernel
    Explanation
    In the many-to-one model, multiple user-level threads are connected to a single kernel-level thread. This means that the user-level threads are managed by the kernel thread, which handles their scheduling and execution. This model allows for concurrency at the user level while relying on the kernel for thread management and resource allocation.

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  • 14. 

    A part of a computer program that performs a well-defined task is known as an ______ 

    • Algorithm

    • Software

    • Hardware

    • System

    Correct Answer
    A. Algorithm
    Explanation
    An algorithm is a well-defined set of instructions or steps that a computer program follows to perform a specific task. It is a part of a computer program that outlines the logical and sequential order in which operations need to be executed. Algorithms are essential in solving complex problems and are used in various applications, such as sorting data, searching for information, or performing mathematical calculations. The other options, software, hardware, and system, are broader terms that encompass different components or aspects of a computer program or system, but do not specifically refer to a well-defined task.

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  • 15. 

    Long term scheduler is also known as _______

    • Job scheduler

    • Cpu scheduler

    • System scheduler

    • Process scheduler

    Correct Answer
    A. Job scheduler
    Explanation
    The long term scheduler is also known as the job scheduler because its main task is to select which processes from the job queue will be brought into the main memory for execution. It determines which processes are admitted to the system and allocates resources to them. The job scheduler plays a crucial role in managing the overall system performance by making decisions about process admission and resource allocation based on various criteria such as priority, memory availability, and system load.

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  • 16. 

    ________ process is not affected by the execution of other processes

    • Independent

    • Co-operative

    • One

    • System

    Correct Answer
    A. Independent
    Explanation
    The process that is not affected by the execution of other processes is referred to as independent. This means that it can run and complete its tasks without any interference or dependency on other processes. It operates autonomously and does not rely on the actions or outcomes of other processes to function properly.

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  • 17. 

    Process scheduling is a part of a _________ operating systems. 

    • Multiprogramming

    • Threading

    • Kernel

    • User

    Correct Answer
    A. Multiprogramming
    Explanation
    Process scheduling is a crucial aspect of multiprogramming operating systems. In multiprogramming, multiple processes are loaded into main memory simultaneously, and the CPU switches between them to ensure efficient utilization of system resources. The process scheduler determines the order in which processes are executed and manages their allocation of CPU time. Therefore, multiprogramming is the correct answer as it directly relates to the concept of process scheduling in operating systems.

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  • 18. 

    ___________ programs help the user to perform a particular task.

    • Application software

    • System software

    • Hardware

    • RAM

    Correct Answer
    A. Application software
    Explanation
    Application software programs are designed to assist users in performing specific tasks. Unlike system software, which manages and controls computer hardware and provides a platform for running other software, application software is focused on providing functionality and features for specific purposes. Examples of application software include word processors, spreadsheets, graphic design programs, and web browsers. These programs are user-friendly and intended to meet the needs and requirements of users in a particular domain or field.

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  • 19. 

    Operating system can use ______ to prevent a user program from running too long.

    • Timer

    • Interrupt

    • Device

    • Cmd

    Correct Answer
    A. Timer
    Explanation
    The operating system can use a timer to prevent a user program from running too long. By setting a specific time limit, the operating system can interrupt the execution of the program when the timer expires. This ensures that no single program monopolizes the system's resources for an extended period, allowing other programs to have a fair share of the CPU's processing time. The timer interrupt helps in maintaining system stability and responsiveness by enforcing time limits on user programs.

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  • 20. 

    For kernel mode the bit is ___.

    • 0

    • 1

    • 12

    • 9

    Correct Answer
    A. 0
    Explanation
    In kernel mode, the bit is set to 0. Kernel mode is a privileged mode in which the operating system has complete control over the system resources. It allows direct access to hardware and unrestricted execution of privileged instructions. By setting the bit to 0, it indicates that the system is operating in kernel mode, ensuring that only trusted and authorized processes can access and modify critical system resources.

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  • 21. 

    ______ section contains the global and static variables.

    • Data

    • Stack

    • Heap

    • Device

    Correct Answer
    A. Data
    Explanation
    The data section contains the global and static variables. Global variables are accessible throughout the entire program, while static variables are limited to the scope of the function or block they are declared in. The data section is a portion of memory that is allocated for storing these variables, and it is separate from the stack and heap sections which are used for dynamic memory allocation.

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  • 22. 

    When executable file is loaded into a memory it becomes ________.

    • Process

    • Thread

    • Bit

    • Queue

    Correct Answer
    A. Process
    Explanation
    When an executable file is loaded into memory, it becomes a process. A process is an instance of a program that is being executed. It has its own memory space, resources, and execution context. Multiple processes can run concurrently on a computer system, each with its own set of instructions and data. Therefore, when an executable file is loaded into memory, it is transformed into a process that can be executed by the operating system.

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  • 23. 

    The PCB is identified by an integer ______ 

    • PID

    • ID

    • Number

    • Character

    Correct Answer
    A. PID
    Explanation
    The acronym "PID" stands for "Process Identifier." In the context of a PCB (Process Control Block), the PID is an integer value that uniquely identifies a running process in an operating system. It is used by the operating system to keep track of various process-related information, such as process state, priority, and resource allocation. Therefore, the correct answer is PID.

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  • 24. 

    ________ is a mechanism which allows processes to communicate each other and synchronize their actions.

    • IPC

    • ABC

    • Threading

    • ACID

    Correct Answer
    A. IPC
    Explanation
    IPC stands for Inter-Process Communication, which is a mechanism that allows processes to communicate with each other and synchronize their actions. This mechanism enables processes running on the same system or different systems to exchange data and information. IPC provides various methods such as shared memory, message passing, and pipes to facilitate communication and coordination between processes. It is an essential component in multitasking and distributed systems, where processes need to collaborate and exchange information to perform tasks efficiently.

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  • 25. 

    Each process is represented in the Operating System by a _________

    • PCB

    • Thread

    • Process

    • Queue

    Correct Answer
    A. PCB
    Explanation
    A process control block (PCB) is used to represent each process in the operating system. It contains important information about the process, such as its current state, program counter, register values, and memory allocation. The PCB allows the operating system to manage and control the execution of processes, including scheduling, resource allocation, and context switching. It serves as a data structure that holds all the necessary information about a process, enabling the operating system to efficiently manage and track the execution of multiple processes simultaneously.

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  • 26. 

    In layered approach operating system is broken into a number of layers and the bottom layer is _______

    • Hardware

    • Software

    • User interface

    • Cmd

    Correct Answer
    A. Hardware
    Explanation
    In the layered approach, the operating system is divided into several layers, with each layer performing specific functions. The bottom layer, which is the hardware layer, is responsible for interacting directly with the physical components of the computer system. It provides the necessary interface and communication between the software and the actual hardware devices. Therefore, the correct answer is hardware.

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  • 27. 

    _________ booting is the using operating system to restart the computer.

    • Warm

    • Cool

    • Shut

    • Flush

    Correct Answer
    A. Warm
    Explanation
    Warm booting refers to restarting a computer using the operating system, without turning off the power. This allows the computer to quickly restart and resume its operations. In contrast, a cool boot refers to starting the computer from a powered-off state, while a shut boot refers to turning off the computer completely and then turning it on again. The term "flush boot" is not commonly used in computer terminology and does not relate to restarting the computer.

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  • 28. 

    When process enter into the system they are put into a ________ queue.

    • Job

    • Wait

    • Ready

    • Device

    Correct Answer
    A. Job
    Explanation
    When a process enters the system, it is put into a "job" queue. This queue holds all the processes that are waiting to be executed by the system. Once a process is in the job queue, it will be scheduled and allocated resources to be executed. Therefore, the correct answer is "job".

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  • 29. 

    The processes which are blocked due to unavailability of an I/O device constitute this ________ queue.

    • Device

    • Ready

    • Waiting

    • Abort

    Correct Answer
    A. Device
    Explanation
    The processes that are blocked due to the unavailability of an I/O device are placed in the device queue. This queue specifically handles processes that are waiting for the I/O device to become available so that they can resume their execution.

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  • 30. 

    At system boot time, the hardware starts in ______ mode. 

    • Monitor

    • User

    • Server

    • Process

    Correct Answer
    A. Monitor
    Explanation
    At system boot time, the hardware starts in monitor mode. This mode allows the system to perform diagnostic tests and initialize hardware components before loading the operating system. It provides low-level access to the system's resources and allows for troubleshooting and configuration. The monitor mode is essential for the system to properly start up and ensure that all hardware components are functioning correctly before transitioning to other modes such as user or server mode.

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  • Current Version
  • Aug 29, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 01, 2017
    Quiz Created by
    Cs
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