Wgu c191 Study guides, Class notes & Summaries

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...

WGU C191 Operating systems for programmers, Full Exam Review, Graded A+

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...

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)

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

(WGU C191) ITEC 2211 Operating Systems for Programmers Comprehensive OA 2024(WGU C191) ITEC 2211 Operating Systems for Programmers Comprehensive OA 2024(WGU C191) ITEC 2211 Operating Systems for Programmers Comprehensive OA 2024

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 ...

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...

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