- Study guides, Class notes & Summaries

What is the role of the OS? a) To build the bootstrap program b) To write to memory c) To develop the kernel d) To manage a computer's hardware d) To manage a computer's hardware Which OS service provides functions that are helpful to the user? a) Resource allocation b) Program execution c) System calls d) Accounting b) Program execution Which system call is used for device manipulation? a) ReadConsole() b) Sleep() c) umas() d) CreateFileMapping() e) chmod() a) ReadConsole()

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17 pages

Written in 2023/2024

Grade A+

DigitalStudyHub

What is the role of the OS? To manage a computer's hardware Which OS service provides functions that are helpful to the user? Program execution Which OS service provides functions that are helpful to the user? Program execution Which system call is used for device manipulation? ReadConsole() Which system calls can be grouped under the category of process controls? Allocate, free memory Which service function is responsible for identifying and correcting exceptions such as the lack of pap...

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6 pages

Written in 2023/2024

Grade A

DigitalStudyHub

Network Attached Storage (NAS) A storage made available over a network rather than over a local connection (such as a bus) - NFS and CIFS are common protocols - Implemented via remote procedure calls (RPCs) - SCSI protocol uses IP network to carry the SCSI protocol Socket A connection point via which an OS communicates with a device PCI bus The common system bus connecting the process-memory subsystem to fast devices Interrupt The hardware mechanism that enables a device to notify the CPU...

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27 pages

Written in 2023/2024

Grade A+

SpencerHenderson

goals of protection ensure that each object is accessed correctly and only by those processes that are allowed to do so. guiding principle of protection - Programs, users and systems should be given just enough privileges to perform their tasks - principle of least privilege access rights where rights-set is a subset of all valid operations that can be performed on the object domain set of access-rights system has two domains user and supervisor UNIX domain system - domain: user-i...

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15 pages

Written in 2023/2024

Grade A+

SpencerHenderson

What is a valid process state? Waiting What are two valid components of a process control block (PCB) The process counter; The process state What is the difference between kernel and user threads? Kernel threads are directly managed by the operating system, whereas user threads are managed without kernel support. Which advantage does short-term scheduling have compared with long-term scheduling? It takes less time to select a process to execute next. What is considered stable when the ave...

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7 pages

Written in 2023/2024

Grade A+

SpencerHenderson

What is the role of the OS? a) To build the bootstrap program b) To write to memory c)To develop the kernel d) To manage a computer's hardware d) To manage a computer's hardware Which OS service provides functions that are helpful to the user? a) Resource allocation b) Program execution c) System calls d) Accounting b) Program execution Which system call is used for device manipulation? a) ReadConsole() b) Sleep() c) umas() d) CreateFileMapping() e) chmod() a) ReadConsole()

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18 pages

Written in 2023/2024

Grade A+

SpencerHenderson

What is the role of the OS? To manage a computer's hardware Which OS service provides functions that are helpful to the user? Program execution Which OS service provides functions that are helpful to the user? Program execution Which system call is used for device manipulation? ReadConsole() Which system calls can be grouped under the category of process controls? Allocate, free memory Which service function is responsible for identifying and correcting exceptions such as the lack of pap...

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7 pages

Written in 2023/2024

Grade A+

SpencerHenderson

OS A program that manages the computers hardware an provides the environment in which programs are executed - its a resource allocator and control program CPU The processor that performs the computations I/O devices Items such as the terminal, disks, video board, printer, network card key are all considered one of these Main Memory This contains data and programs used by the CPU System bus This is the communication medium between CPU, memory and peripherals kernel the one program running...

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18 pages

Written in 2023/2024

Grade A+

SpencerHenderson

Temporary data such as function parameters, return addresses, and local variables. What does a stack contain? 1. The parent continues to execute concurrently with its children. 2. The parent waits until some or all of its children have terminated. 3. The child process is a duplicate of the parent process (it has the same program and data as the parent). 4. The child process has a new program loaded into it. When a parent creates a child process what are the possibilities? Context Switch ...

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30 pages

Written in 2023/2024

Grade A+

SpencerHenderson

Magnetic disks What is the most common secondary storage? Transfer rate The rate at which data flow between drive and computer Positioning time (random-access time) Time to move disk arm to desired cylinder (seek time) and time for desired sector to rotate under the disk head (rotational latency) Head crash Results from disk head making contact with the disk surface (it's bad) EIDE, ATA, SATA, USB, Fiber Channel, SCSI, SAS, Firewire What are examples of I/O busses? Host controller Uses ...

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19 pages

Written in 2023/2024

Grade A+

SpencerHenderson

QUESTIONS AND ANSWERS

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5 pages

Written in 2023/2024

Grade A+

Brilliantgrades

hat is the role of the OS? - Answer-To manage a computer's hardware Which OS service provides functions that are helpful to the user? - Answer-Program execution Which OS service provides functions that are helpful to the user? - Answer-Program execution Which system call is used for device manipulation? - Answer-ReadConsole() Which system calls can be grouped under the category of process controls? - Answer-Allocate, free memory Which service function is responsible for identifying and co...

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6 pages

Written in 2023/2024

Grade A+

Brainarium

In what way is an operating system like a government? - Answer-It creates an environment within which other programs can do useful work. A _____ is an example of a systems program. - Answer-command interpreter ____ operating systems are designed primarily to maximize resource utilization. - Answer-Mainframe If a program terminates abnormally, a dump of memory may be examined by a ____ to determine the cause of the problem. - Answer-debugger A message-passing model is ____. - Answer-easier ...

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10 pages

Written in 2023/2024

Grade A+

Brainarium

WGU C191 MODULE 1 EXAM/ WGU C191 MODULE 1 STUDY GUIDE RECENT VERSION 2024 QUESTION AND CORRECT ANSWERS/ GRADED A+

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20 pages

Written in 2023/2024

Grade A+

kerrydanns

goals of protection ensure that each object is accessed correctly and only by those processes that are allowed to do so. guiding principle of protection - Programs, users and systems should be given just enough privileges to perform their tasks - principle of least privilege access rights where rights-set is a subset of all valid operations that can be performed on the objec

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15 pages

Written in 2023/2024

Grade A+

QUINTER

goals of protection ensure that each object is accessed correctly and only by those processes that are allowed to do so. guiding principle of protection - Programs, users and systems should be given just enough privileges to perform their tasks - principle of least privilege access rights where rights-set is a subset of all valid operations that can be performed on the objec

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15 pages

Written in 2023/2024

Grade A+

QUINTER

What is the role of the OS? To manage a computer's hardware Which OS service provides functions that are helpful to the user? Program execution Which OS service provides functions that are helpful to the user? Program execution

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6 pages

Written in 2023/2024

Grade A+

QUINTER

Network Attached Storage (NAS) A storage made available over a network rather than over a local connection (such as a bus) - NFS and CIFS are common protocols - Implemented via remote procedure calls (RPCs) - SCSI protocol uses IP network to carry the SCSI protocol Socket A connection point via which an OS communicates with a device

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26 pages

Written in 2023/2024

Grade A+

QUINTER

Temporary data such as function parameters, return addresses, and local variables. What does a stack contain? 1. The parent continues to execute concurrently with its children. 2. The parent waits until some or all of its children have terminated. 3. The child process is a duplicate of the parent process (it has the same program and data as the parent). 4. The child process has a new program loaded into it. When a parent creates a child process what are the possibilities?

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29 pages

Written in 2023/2024

Grade A+

QUINTER

What is a valid process state? Waiting What are two valid components of a process control block (PCB) The process counter; The process state What is the difference between kernel and user threads? Kernel threads are directly managed by the operating system, whereas user threads are managed without kernel support.

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7 pages

Written in 2023/2024

Grade A+

QUINTER