Virtual Memory Thrashing MCQs

15 MCQs — Operating System MCQs (Page 1 of 2)

Practice Virtual Memory Thrashing MCQs with correct answers and explanations. These questions are from the Operating System MCQs section.

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Application Io Interface 1	Application Io Interface 2
Atomic Transactions	Basics
Classic Sync Problems	Communication Systems Bandwidth Transmission Medium
Cpu Scheduling	Cpu Scheduling 2
Cpu Scheduling Algorithms 1	Cpu Scheduling Algorithms 2
Cpu Scheduling Benefits	Critical Section Problem
Deadlock	Deadlock Avoidance
Deadlock Detection	Deadlock Prevention
Deadlock Recovery	Disk Management
Disk Scheduling 1	Disk Scheduling 2
Distributed File System	Distributed Operating System
Distributed Synchronization	File System 1
File System Allocation Methods 1	File System Allocation Methods 2
File System Allocation Methods 3	File System Concepts
File System Free Space Performance	File System Implementation
File System Interface Access Methods 1	File System Interface Access Methods 2
File System Interface Directory Structure 1	File System Interface Directory Structure 2
File System Interface Mounting Sharing	File System Interface Protection
File System Recovery	Inter Process Communication
Io Subsystem	Kernel Io Subsystems
Linux	Mass Storage Raid 1
Mass Storage Raid 2	Mass Storage Tertiary Storage
Memory Allocation 1	Memory Allocation 2
Memory Management	Memory Management Paging 1
Memory Management Paging 2	Memory Management Segmentation
Memory Management Swapping 1	Memory Management Swapping 2
Multi Threading Models	Multimedia System Compression 1
Multimedia System Compression 2	Multimedia System Compression 3
Multimedia System Cpu Disk Scheduling	Multimedia System Network Management
Network File System 1	Network File System 2
Network Structure Topology	Operating System
Process Control Block	Process Creation
Process Rpc	Process Scheduling Queue
Process Structures	Process Sync Monitors
Process Synchronization	Processes
Protection Access Matrix	Protection Concepts
Protection Memory Protection	Protection Revocation Access Rights
Robustness	Rtos
Secondary Storage	Security
Security Cryptography	Security Intrusion Detection
Security Program System Threats	Security System Facility
Security User Authentication	Semaphores 1
Semaphores 2	Swap Space Management
Threads	Threads Cancellation
Threads Fork Exec	Threads Pools
Threads Signal Handling	Threads Ult Klt
Two Port Network	Virtual Memory
Virtual Memory Demand Paging	Virtual Memory Frame Allocation
Virtual Memory Page Replacement Algorithms 1	Virtual Memory Page Replacement Algorithms 2
Virtual Memory Thrashing

If the sum of the working – set sizes increases, exceeding the total number of available frames ____________

A. Then the process crashes
B. The memory overflows
C. The system crashes
D. The operating system selects a process to suspend

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A process is thrashing if ____________

A. It spends a lot of time executing, rather than paging
B. It spends a lot of time paging than executing
C. It has no memory allocated to it
D. None of the mentioned

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Thrashing _______ the CPU utilization.

A. Increases
B. Keeps constant
C. Decreases
D. None of the mentioned

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What is a locality?

A. A set of pages that are actively used together
B. A space in memory
C. An area near a set of processes
D. None of the mentioned

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When a subroutine is called ____________

A. It defines a new locality
B. It is in the same locality from where it was called
C. It does not define a new locality
D. None of the mentioned

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A program is generally composed of several different localities, which _____ overlap.

A. May
B. Must
C. Do not
D. Must not

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In the working set model, for: 2 6 1 5 7 7 7 7 5 1 6 2 3 4 1 2 3 4 4 4 3 4 3 4 4 4 1 3 2 3 if DELTA = 10, then the working set at time t1 (….7 5 1) is?

A. {1, 2, 4, 5, 6}
B. {2, 1, 6, 7, 3}
C. {1, 6, 5, 7, 2}
D. {1, 2, 3, 4, 5}

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The accuracy of the working set depends on the selection of ____________

A. Working set model
B. Working set size
C. Memory size
D. Number of pages in memory

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If working set window is too small ____________

A. It will not encompass entire locality
B. It may overlap several localities
C. It will cause memory problems
D. None of the mentioned

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If working set window is too large ____________

A. It will not encompass entire locality
B. It may overlap several localities
C. It will cause memory problems
D. None of the mentioned

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