C191 - Study guides, Class notes & Summaries
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WGU C191 MODULE 3 Latest Update Graded A+ | 2024
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WGU C191 MODULE 3 Latest Update Graded A 
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 exam...
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WGU C191 Pre-Assessment, Questions and answers, 100% Accurate. Rated A+
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WGU C191 Pre-Assessment, Questions 
and answers, 100% Accurate. Rated A+
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WGU C191 MODULE 1 Latest Update Graded A+ | 2024
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WGU C191 MODULE 1 Latest Update Graded A 
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 p...
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WGU C191 (Questions & Answers) Rated 100% Correct!!
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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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C191 Ken's Blue Cards
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C191 Ken's Blue Cards 
operating system - A program that manages hardware. 
control program - Part of the OS that manages the execution of user programs to 
prevent errors and improper use 
Moore's Law - Transistors double every 18 months 
bootstrap program - The initial program that is stored on the ROM to assist starting up a 
computer 
instruction register - A typical instruction using the von Neumann structure first fetches 
an instruction from memory and stores that instruction 
Main m...
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C191 Pre Assessment Questions And Answers With Complete Solutions
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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 - Answer-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 - Answer-b) Program execution 
Which system call is used for device manipulation? 
a) ReadConsole() 
b) Sleep() 
c) umas() 
d) CreateFileMapping() 
e) chmod() - ...
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WGU C191 MODULE 5 Latest Update Graded A+ | 2024
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WGU C191 MODULE 5 Latest Update Graded A 
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 superv...
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WGU C191 Pre-Assessment Questions and Answers Graded A+ | 2024
- Exam (elaborations) • 17 pages • 2023
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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(...
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WGU C191 Operating systems for programmers, Full Exam Review, Graded A+
- Exam (elaborations) • 12 pages • 2024
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WGU C191 Operating systems for 
programmers, Full Exam Review, Graded 
A+
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Wgu C191 Pre Assessment Exam Questions With 100% Correct Answers.
- Exam (elaborations) • 17 pages • 2023
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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 - Answer 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 - Answer b) Program execution 
Which system call is used for device manipulation? 
a) ReadConsole() 
b) Sleep() 
c) umas() 
d) CreateFileMapping() 
e) chmod() - ...
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