Wgu c191 - Study guides, Class notes & Summaries

WGU C191 Pre Assessment Questions and Answers Graded A+ 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() ...

WGU C191 Full Study Set | 220 Questions and Correct Solutions Latest Update What 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 -...

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 ...

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)

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...

WGU C191 Pre-Assessment, Questions and answers, 100% Accurate. Rated A+

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()

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 lac...

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

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