WGU C191 Module 2 Process Management Key Exam Guide Questions and Integral Marking Scheme version 2024/2025
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WGU C191
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WGU C191
WGU C191 Module 2 Process Management Key Exam Guide Questions and Integral Marking Scheme version 2024/2025
When priority scheduling results in a process that is ready to run but waiting for the CPU - correct answer Starvation
The scheme by which a many-to-one or many-to-many system schedules...
WGU C191 Module 2 Process
Management Key Exam Guide Questions
and Integral Marking Scheme version
2024/2025
When priority scheduling results in a process that is ready to run but waiting for the CPU
- correct answer Starvation
The scheme by which a many-to-one or many-to-many system schedules user-threads -
correct answer PCS
The ____ of a process contains temporary data such as function parameters, return
addresses, and local variables. - correct answer stack
When a child process is created, which of the following is a possibility in terms of the
execution or address space of the child process? - correct answer Child process runs
concurrently with the parent/child process has a new program loaded into it/child is a
duplicate of the parent
A _________________ saves the state of the currently running process and restores
the state of the next process to run. - correct answer context switch
A blocking send() and blocking receive() is known as a(n) _________________. -
correct answer rendezvous
A(n) ______________ allows several unrelated processes to use the pipe for
communication. - correct answer named pipe
Imagine that a host with IP address 150.55.66.77 wishes to download a file from the
web server at IP address 202.28.15.123. Select a valid socket pair for a connection
between this pair of hosts. - correct answer 150.55.66.77:2000 and 202.28.15.123:80
,Child processes inherit UNIX ordinary pipes from their parent process because: -
correct answer A pipe is treated as a file descriptor and child processes inherit open
file descriptors from their parents.
The _______ process is assigned as the parent to orphan processes. - correct answer
init
____ is a thread library for Solaris that maps many user-level threads to one kernel
thread. - correct answer Green threads
Pthreads refers to ____. - correct answer a specification for thread behavior
Cancellation points are associated with ____ cancellation. - correct answer deferred
_____ is not considered a challenge when designing applications for multicore systems.
- correct answer Ensuring there is a sufficient number of cores
A ____ provides an API for creating and managing threads. - correct answer thread
library
The most common technique for writing multithreaded Java programs is _____. -
correct answer implementing the Runnable interface and defining its run() method
Grand Central Dispatch handles blocks by ____. - correct answer placing them on a
dispatch queue
An instruction that executes atomically ____. - correct answer executes as a single,
uninterruptible unit
,In Peterson's solution, the ____ variable indicates if a process is ready to enter its
critical section. - correct answer flag[i]
What is the correct order of operations for protecting a critical section using mutex
locks? - correct answer acquire() followed by release()
Assume an adaptive mutex is used for accessing shared data on a Solaris system with
multiprocessing capabilities. Which of the following statements is not true? - correct
answer Condition variables and semaphores are never used in place of an adaptive
mutex.
Which of the following statements is true? - correct answer Counting semaphores can
be used to control access to a resource with a finite number of instances.
_____ is/are not a technique for managing critical sections in operating systems. -
correct answer Peterson's solution
Which of the following statements is true? - correct answer Operations on atomic
integers do not require locking.
The OpenMP #pragma omp critical directive ___________. - correct answer behaves
much like a mutex lock
Which of the following is true of multilevel queue scheduling? - correct answer Each
queue has its own scheduling algorithm.
The Linux CFS scheduler identifies _____________ as the interval of time during which
every runnable task should run at least once. - correct answer targeted latency
______ allows a thread to run on only one processor. - correct answer Processor
affinity
, The two general approaches to load balancing are __________ and ____________. -
correct answer push migration, pull migration
Which of the following would be an acceptable signal handling scheme for a
multithreaded program? - correct answer Deliver the signal to the thread to which the
signal applies/deliver the signal to every thread in the process/deliver the signal to only
certain threads in the process
The most common secondary storage device is ____. - correct answer magnetic disk
Temporary data such as function parameters, return addresses, and local variables. -
correct answer 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. - correct answer When a parent
creates a child process what are the possibilities?
Context Switch - correct answer The kernel saves the context of the old process in its
PCB and loads the saved context of the new process scheduled to run
Task control block - correct answer What is another name for the PCB (process control
block)?
Process Scheduling Queues - correct answer - job queue - all processes in a system
-ready queue - all process in main memory ready and waiting to execute
-device queues - set of processes waiting for i/o device
- penguins play w/ cool arctic melted ice
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