WGU D686 OA AND PA EXAM / WGU D686 OPERATING SYSTEM FOR
COMPUTER SCIENTISTS OBJECTIVE ASSESSMENT, PRE-
ASSESSMENT AND A NEW UPDATED STUDY GUIDE 2026/2027 ALL
COMPLETE ACCURATE EXAM ACTUAL QUESTIONS AND CORRECT
DETAILED ANSWERS (100% CORRECT VERIFIED SOLUTIONS)
NEWEST UPDATED VERSION |GUARANTEED PASS A+ (BRAND
NEW!) FULL REVISED D686 WGU EXAM
What is the method used to determine which processes will be assigned
to the CPU for execution?
Answer- CPU scheduling
3 multiple choice options
How does a preemptive scheduling algorithm differ from a non-
preemptive scheduling algorithm?
Answer- Preemptive scheduling can interrupt a running process to assign
the CPU to another process.
3 multiple choice options
Which criterion measures the total time taken from the submission of a
process to its completion?
Answer- Turnaround time
3 multiple choice options
,Which scheduling criterion aims to keep the CPU as busy as possible?
Answer- Utilization
3 multiple choice options
Which scheduling algorithm executes the process that arrives first?
Answer- First-come, first-served
3 multiple choice options
How does shortest job first scheduling determine the order of process
execution?
Answer- By the length of the next CPU burst of each process
3 multiple choice options
Which scheduling algorithm allocates a fixed time slice to each process
in the ready queue?
Answer- Round-robin
3 multiple choice options
,How is real-time scheduling different from traditional scheduling
algorithms?
Answer- Real-time scheduling ensures processes meet deadlines.
3 multiple choice options
Which type of scheduling uses multiple queues, each with its own
scheduling algorithm?
Answer- Multilevel queue
3 multiple choice options
What is the purpose of load balancing in multiprocessor scheduling?
Answer- To ensure equal distribution of tasks across processors
3 multiple choice options
Maria is developing a software application where multiple threads
request and hold resources while waiting for additional ones.
How would this approach cause a deadlock situation?
Answer- Threads wait for resources while holding others, causing a
circular wait.
3 multiple choice options
, In a database management system at Allah Company, cycles in a wait-
for graph have been identified.
What should the system administrator conclude?
Answer- There is a potential deadlock in the system.
3 multiple choice options
A set of processes in a production server at Synesthor are unable to
proceed because each process is holding a resource and waiting for
another.
Which condition must be present for this deadlock to occur?
Answer- Mutual exclusion
3 multiple choice options
The system administrator is analyzing a resource allocation graph
(RAG) for a project at Morrilton Robotics.
How can this graph help the system administrator understand potential
deadlocks?
Answer- By illustrating resource requests and allocations
3 multiple choice options
COMPUTER SCIENTISTS OBJECTIVE ASSESSMENT, PRE-
ASSESSMENT AND A NEW UPDATED STUDY GUIDE 2026/2027 ALL
COMPLETE ACCURATE EXAM ACTUAL QUESTIONS AND CORRECT
DETAILED ANSWERS (100% CORRECT VERIFIED SOLUTIONS)
NEWEST UPDATED VERSION |GUARANTEED PASS A+ (BRAND
NEW!) FULL REVISED D686 WGU EXAM
What is the method used to determine which processes will be assigned
to the CPU for execution?
Answer- CPU scheduling
3 multiple choice options
How does a preemptive scheduling algorithm differ from a non-
preemptive scheduling algorithm?
Answer- Preemptive scheduling can interrupt a running process to assign
the CPU to another process.
3 multiple choice options
Which criterion measures the total time taken from the submission of a
process to its completion?
Answer- Turnaround time
3 multiple choice options
,Which scheduling criterion aims to keep the CPU as busy as possible?
Answer- Utilization
3 multiple choice options
Which scheduling algorithm executes the process that arrives first?
Answer- First-come, first-served
3 multiple choice options
How does shortest job first scheduling determine the order of process
execution?
Answer- By the length of the next CPU burst of each process
3 multiple choice options
Which scheduling algorithm allocates a fixed time slice to each process
in the ready queue?
Answer- Round-robin
3 multiple choice options
,How is real-time scheduling different from traditional scheduling
algorithms?
Answer- Real-time scheduling ensures processes meet deadlines.
3 multiple choice options
Which type of scheduling uses multiple queues, each with its own
scheduling algorithm?
Answer- Multilevel queue
3 multiple choice options
What is the purpose of load balancing in multiprocessor scheduling?
Answer- To ensure equal distribution of tasks across processors
3 multiple choice options
Maria is developing a software application where multiple threads
request and hold resources while waiting for additional ones.
How would this approach cause a deadlock situation?
Answer- Threads wait for resources while holding others, causing a
circular wait.
3 multiple choice options
, In a database management system at Allah Company, cycles in a wait-
for graph have been identified.
What should the system administrator conclude?
Answer- There is a potential deadlock in the system.
3 multiple choice options
A set of processes in a production server at Synesthor are unable to
proceed because each process is holding a resource and waiting for
another.
Which condition must be present for this deadlock to occur?
Answer- Mutual exclusion
3 multiple choice options
The system administrator is analyzing a resource allocation graph
(RAG) for a project at Morrilton Robotics.
How can this graph help the system administrator understand potential
deadlocks?
Answer- By illustrating resource requests and allocations
3 multiple choice options
