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Operating System Concepts – SRAM vs DRAM
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Operating System Concepts – SRAM vs DRAM

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Questions and Answers

What type of interrupt can be caused by a software error like division by zero?

  • System call interrupt
  • Kernel interrupt
  • Software interrupt (correct)
  • Hardware interrupt

    • In a batch processing system, how are programs and data organized before processing starts?

  • Programs are executed in random order
  • Each program runs independently
  • Programs and data are collected in a batch (correct)
  • Data is processed first, then programs

    • What problem is multiprogramming designed to solve?

  • Memory shortage
  • Reducing system call requests
  • CPU overload
  • Keeping CPU and I/O devices busy (correct)

    • Which technique involves sharing the processor's time with multiple users?

    <p>Multitasking (Timesharing)</p> Signup and view all the answers

    What happens when a job in a batch system must wait, for example, for I/O?

    <p>The operating system processes another job</p> Signup and view all the answers

    Which of the following accurately describes multitasking?

    <p>Switching jobs frequently to allow user interaction</p> Signup and view all the answers

    Which system collects programs and data together before processing starts?

    <p>Batch processing system</p> Signup and view all the answers

    Why is multiprogramming essential in a computing environment?

    <p>To keep the CPU and I/O devices busy</p> Signup and view all the answers

    What distinguishes multitasking from batch processing?

    <p>User interaction with running jobs</p> Signup and view all the answers

    Why does multiprogramming organize jobs so that the CPU always has one to execute?

    <p>To keep the CPU and I/O devices busy</p> Signup and view all the answers

    SRAM uses capacitors to store data.

    <p>False</p> Signup and view all the answers

    NVM devices are slower than hard disks.

    <p>False</p> Signup and view all the answers

    A word in computer architecture typically consists of 4 bytes.

    <p>False</p> Signup and view all the answers

    Hard disk drives are logically divided into clusters instead of tracks.

    <p>False</p> Signup and view all the answers

    The disk controller determines the physical interaction between the device and the computer.

    <p>False</p> Signup and view all the answers

    An operating system plays a role in managing computer resources and providing a user interface.

    <p>True</p> Signup and view all the answers

    Interrupts are a key component in a computer system and are responsible for initiating kernel mode operations.

    <p>True</p> Signup and view all the answers

    Multiprocessor computer systems have a single processor working on multiple tasks simultaneously.

    <p>False</p> Signup and view all the answers

    Free and open-source operating systems are not commonly used in various computing environments due to their limitations.

    <p>False</p> Signup and view all the answers

    Kernel data structures in an operating system are only related to memory management and have no impact on system performance.

    <p>False</p> Signup and view all the answers

    An operating system is a program that acts as an intermediary between a user of a computer and the computer software.

    <p>False</p> Signup and view all the answers

    The primary goal of an operating system is to make solving user problems more complex.

    <p>False</p> Signup and view all the answers

    Mobile devices like smartphones are typically resource-rich and optimized for resource utilization.

    <p>False</p> Signup and view all the answers

    A trap or exception is a hardware-generated interrupt caused by a user request.

    <p>False</p> Signup and view all the answers

    An operating system is not interrupt-driven.

    <p>False</p> Signup and view all the answers

    A megabyte is exactly equal to 1,0242 bytes.

    <p>True</p> Signup and view all the answers

    Networking measurements are generally given in bytes.

    <p>False</p> Signup and view all the answers

    Direct Memory Access (DMA) involves the CPU in transferring large amounts of data between memory and devices.

    <p>False</p> Signup and view all the answers

    A kernel is responsible for starting system daemons, which are services provided outside of the kernel.

    <p>True</p> Signup and view all the answers

    Multiprogramming organizes jobs so that the CPU always has one to execute in order to avoid any interruptions.

    <p>False</p> Signup and view all the answers

    Multiprogramming ensures that the CPU and I/O devices are always busy by running multiple jobs simultaneously.

    <p>False</p> Signup and view all the answers

    Batch processing involves the Operating System switching between multiple jobs frequently to create interactive computing experiences.

    <p>False</p> Signup and view all the answers

    Multitasking is a logical extension of batch systems where the CPU switches jobs so frequently that users can interact with each job while it is running.

    <p>True</p> Signup and view all the answers

    In a multiprogramming environment, each user is allocated a dedicated time slot for utilizing computer resources.

    <p>False</p> Signup and view all the answers

    A software interrupt in an operating system can only be caused by a software error like division by zero.

    <p>False</p> Signup and view all the answers

    What is the primary purpose of multiprogramming in a computing environment?

    <p>To ensure the CPU always has a job to execute, avoiding idle time.</p> Signup and view all the answers

    How does multitasking differ from batch processing?

    <p>Multitasking involves frequent CPU job switches allowing user interaction, while batch processing collects programs and data before processing starts.</p> Signup and view all the answers

    What problem does multiprogramming aim to solve?

    <p>To prevent idle time for the CPU and I/O devices by organizing and running multiple jobs simultaneously.</p> Signup and view all the answers

    Describe the concept of timesharing (multitasking) in operating systems.

    <p>Timesharing involves the CPU switching jobs frequently, allowing users to interact with each job while it's running.</p> Signup and view all the answers

    Why is multitasking considered a logical extension of batch systems?

    <p>Because multitasking allows users to interact with running jobs, which is an enhancement over the batch processing model.</p> Signup and view all the answers

    In a multiprogramming environment, what is the purpose of having a subset of total jobs in memory?

    <p>To ensure efficient job switching and utilization of CPU resources.</p> Signup and view all the answers

    How does batch processing differ from multitasking in terms of user interaction?

    <p>Batch processing does not allow user interaction during job execution, while multitasking permits users to interact with running jobs.</p> Signup and view all the answers

    Explain the role of hardware and software interrupts in an operating system.

    <p>Hardware interrupts are triggered by devices, while software interrupts occur due to exceptions like division by zero or system calls.</p> Signup and view all the answers

    What distinguishes multiprogramming from timesharing in terms of CPU utilization?

    <p>Multiprogramming ensures the CPU always has a job to execute, while timesharing shares the CPU's time among multiple users.</p> Signup and view all the answers

    Why is it important for an operating system to support both hardware and software interrupts?

    <p>To handle a variety of events efficiently, such as device interactions, software errors, and system service requests.</p> Signup and view all the answers

    Multiprogramming organizes jobs so CPU always has one to execute to avoid any __________

    <p>interruptions</p> Signup and view all the answers

    A logical extension of Batch systems– the CPU switches jobs so frequently that users can interact with each job while it is running, creating __________ computing

    <p>interactive</p> Signup and view all the answers

    Many processes are allocated with computer resources in respective __________ slots.

    <p>time</p> Signup and view all the answers

    In multitasking, the CPU shares its time with __________ users.

    <p>multiple</p> Signup and view all the answers

    Multiprogramming ensures that the CPU and I/O devices are always busy by running __________ jobs simultaneously.

    <p>multiple</p> Signup and view all the answers

    Multitasking is a logical extension of Batch systems where the CPU switches jobs so frequently that users can interact with each job while it is __________.

    <p>running</p> Signup and view all the answers

    Multiprogramming organizes jobs so that the CPU always has one to execute in order to avoid any __________.

    <p>interruptions</p> Signup and view all the answers

    In a multiprogramming environment, a subset of total jobs is kept in __________.

    <p>memory</p> Signup and view all the answers

    Batch processing is a technique in which an Operating System collects the programs and data together in a __________ before processing starts.

    <p>batch</p> Signup and view all the answers

    Multitasking is a logical extension of Batch systems where the CPU switches jobs so frequently that users can interact with each job while it is __________.

    <p>running</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Kernel interrupt = Hardware and software-driven interrupt in an operating system Multiprogramming = Organizing jobs so CPU always has one to execute Multitasking = CPU switches jobs frequently for interactive computing Batch processing = Collecting programs and data together before processing starts</p> Signup and view all the answers

    Match the following system behaviors with their respective definitions:

    <p>Hardware interrupt = Triggered by a device directly to CPU Software interrupt = Generated by a program request or exception Job scheduling = Selecting and running a job in a batch system Infinite loop = A process that continuously repeats without termination</p> Signup and view all the answers

    Match the following concepts with their correct explanations:

    <p>Single user CPU utilization = Challenge addressed by multiprogramming Batch system memory management = Keeping a subset of total jobs in memory Timesharing = Switching CPU jobs frequently for user interaction Interactive computing = Users engage with running jobs in real-time</p> Signup and view all the answers

    Match the following statements with the appropriate terms:

    <p>CPU always executing job = Objective of multiprogramming Infinite loop prevention = Benefit of job scheduling in batch processing User interaction with running jobs = Characteristic of timesharing Collecting programs for processing = Core feature of batch systems</p> Signup and view all the answers

    Match the following operational aspects with their corresponding definitions:

    <p>Request for OS service interrupt = Triggered by a program seeking OS assistance CPU timesharing among users = Distributing processor time to multiple users I/O device busy control = Ensuring devices are utilized efficiently Job waiting management = Switching between tasks when one is blocked</p> Signup and view all the answers

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