Master Scheduling Algorithms: Enhance System Performance in Operating Systems

Question 1

Which scheduling algorithm assigns processes to the CPU based on the principle of 'first-come, first-served'?

Accepted Answer

First-Come, First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Answer

Round Robin Scheduling

Question 2

Which disadvantage is associated with the Shortest Job First (SJF) scheduling algorithm?

Accepted Answer

Potential for starvation

Answer

High average waiting time

Answer

Low CPU utilization

Answer

Limited fairness

Question 3

In priority scheduling, what factor determines the priority of a process?

Accepted Answer

Priority value

Answer

Arrival time

Answer

Burst time

Answer

Memory size

Question 4

Which scheduling algorithm is best suited for systems with fluctuating process arrival rates and varying burst times?

Accepted Answer

Round Robin Scheduling

Answer

First-Come, First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 5

Which scheduling algorithm employs a time quantum to switch between processes and ensure fairness?

Accepted Answer

Round Robin Scheduling

Answer

First-Come, First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 6

What is the primary function of a scheduling policy within an operating system?

Accepted Answer

Manage CPU allocation among running processes

Answer

Determine the sequence of disk I/O requests

Answer

Prioritize network traffic

Answer

Handle memory allocation

Question 7

What is the key distinction between time-sharing and real-time scheduling?

Accepted Answer

Focus on fairness versus predictability

Answer

Type of systems being scheduled

Answer

Resource allocation mechanisms

Answer

Hardware requirements

Question 8

Which scheduling algorithm is commonly employed in multiprocessor systems?

Accepted Answer

Gang Scheduling

Answer

First-Come, First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 9

Which scheduling algorithm is simple but can lead to starvation when processes have different execution times?

Accepted Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 10

Which scheduling algorithm gives priority to processes based on their arrival time, ensuring that processes that arrive first are executed first?

Accepted Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Answer

Last-In First-Out (LIFO)

Question 11

Identify the non-preemptive scheduling algorithm that schedules processes based on their shortest execution time, without interrupting currently executing processes.

Accepted Answer

Shortest Job First (SJF)

Answer

Round Robin

Answer

Priority Scheduling

Answer

Last-In First-Out (LIFO)

Question 12

Which scheduling algorithm operates without knowledge of the process execution time, relying solely on the order in which processes arrive?

Accepted Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Answer

Shortest Remaining Time

Question 13

Which scheduling algorithm favors shorter processes by prioritizing their execution over longer ones?

Accepted Answer

Shortest Job First (SJF)

Answer

First-Come First-Served (FCFS)

Answer

Round Robin

Answer

Priority Scheduling

Question 14

Which of the following is NOT a relevant factor to consider when selecting a scheduling algorithm?

Accepted Answer

Process size (amount of memory required by a process)

Answer

System throughput (number of processes completed per unit time)

Answer

Process response time (time from process submission to its start of execution)

Answer

Operating system overhead (time spent by the OS managing processes)

Question 15

Which scheduling algorithm is suitable for interactive systems that require quick response times for user input?

Accepted Answer

Round Robin

Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 16

Which scheduling algorithm prioritizes jobs with the shortest processing times?

Accepted Answer

Shortest Job First (SJF)

Answer

First-Come First-Served (FCFS)

Answer

Priority Scheduling

Answer

Round Robin Scheduling

Question 17

What is the primary purpose of scheduling algorithms in operating systems?

Accepted Answer

Optimizing resource allocation and process execution order

Answer

Preventing system crashes and data loss

Answer

Minimizing response time for user requests

Answer

Maximizing system throughput

Question 18

Which scheduling algorithm allocates CPU time to processes in fixed time intervals?

Accepted Answer

Round Robin Scheduling

Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 19

What metric measures the average time a process spends waiting for its turn to execute?

Accepted Answer

Waiting time

Answer

Throughput

Answer

Turnaround time

Answer

Response time

Question 20

Which of the following factors does NOT influence the choice of scheduling algorithm?

Accepted Answer

Personal preferences of the system administrator

Answer

Availability of system resources

Answer

Characteristics of the processes in the system

Answer

Expected workload on the system

Question 21

What is a key advantage of using Priority scheduling?

Accepted Answer

Improving response time for critical processes

Answer

Guaranteeing fair access to resources

Answer

Preventing starvation of low-priority processes

Answer

Reducing overhead associated with scheduling

Question 22

Which scheduling algorithm is commonly used in real-time systems, where timely response is crucial?

Accepted Answer

Priority Scheduling

Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Round Robin Scheduling

Question 23

In FCFS (First-Come First-Serve) scheduling, which characteristic is true?

Accepted Answer

Non-preemptive: processes cannot be interrupted once executing

Answer

Preemptive: processes can be interrupted

Answer

Priority-driven: processes with higher priority get more CPU time

Answer

Shortest-job-first: processes with the shortest estimated burst time are executed first

Question 24

In priority scheduling, which of the following statements is accurate?

Accepted Answer

Processes with higher priorities are given more CPU time.

Answer

Processes with lower priorities are given more CPU time.

Answer

Processes with equal priorities are given equal CPU time.

Answer

Priority is not considered in process scheduling.

Question 25

In Shortest Job First (SJF) scheduling, what is the primary factor used to determine which process to execute next?

Accepted Answer

Estimated burst time

Answer

Estimated memory requirement

Answer

Arrival time

Answer

Priority level

Question 26

Which of the following is NOT an advantage of using a preemptive scheduling algorithm?

Accepted Answer

Guaranteed completion of all processes

Answer

Reduced starvation

Answer

Improved average turnaround time

Answer

Enhanced system throughput

Question 27

When a new process enters the ready queue while another process is executing in the CPU, which scheduling algorithm would switch to the new process based on its arrival time?

Accepted Answer

FCFS

Answer

SJF

Answer

Round Robin

Answer

Priority

Question 28

In a multilevel feedback queue scheduling algorithm, which level typically has the lowest priority?

Accepted Answer

Background

Answer

Foreground

Answer

IO-bound

Answer

System

Question 29

In First-Come First-Served (FCFS) scheduling, which of the following criteria is used to schedule processes?

Accepted Answer

Arrival Time

Answer

Burst Time

Answer

Priority

Answer

Completion Time

Question 30

Which scheduling algorithm minimizes the average waiting time for processes?

Accepted Answer

SJF

Answer

FCFS

Answer

Priority

Answer

Round Robin

Question 31

Which scheduling algorithm is commonly used in interactive systems, where fast response times are crucial?

Accepted Answer

Round Robin

Answer

FCFS

Answer

SJF

Answer

Priority

Question 32

Which scheduling algorithm allows preemption, enabling higher priority processes to interrupt lower priority ones?

Accepted Answer

Priority (with preemption)

Answer

FCFS

Answer

SJF

Answer

Round Robin (with time slicing)

Question 33

Which scheduling algorithm can potentially result in indefinite postponement of low-priority processes?

Accepted Answer

Priority (without aging)

Answer

SJF

Answer

FCFS

Answer

Round Robin

Question 34

Which scheduling algorithm follows a non-preemptive approach, executing processes in the order they arrive?

Accepted Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Answer

Round-Robin Scheduling

Question 35

Identify the scheduling algorithm that prioritizes processes based on their estimated time needed to complete execution.

Accepted Answer

Shortest Job First (SJF)

Answer

First-Come First-Served (FCFS)

Answer

Priority Scheduling

Answer

Round-Robin Scheduling

Question 36

Which scheduling algorithm allocates each process a fixed time slice and cycles them through the CPU?

Accepted Answer

Round-Robin Scheduling

Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Priority Scheduling

Question 37

For systems with real-time constraints, which scheduling algorithm is commonly employed?

Accepted Answer

Priority Scheduling

Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Round-Robin Scheduling

Question 38

Which scheduling algorithm prioritizes processes with the shortest execution time?

Accepted Answer

Shortest Job First (SJF)

Answer

First Come First Served (FCFS)

Answer

Round Robin

Answer

Priority Scheduling

Question 39

In First Come First Served (FCFS) scheduling, processes are executed in what order?

Accepted Answer

The order they arrive in the system

Answer

The order of their priority levels

Answer

The order of their execution times

Answer

Reverse order of their arrival

Question 40

Which scheduling algorithm allocates time to processes in a cyclical manner?

Accepted Answer

Round Robin

Answer

Shortest Remaining Time Next

Answer

Least Recently Used

Answer

Priority Scheduling

Question 41

Which scheduling algorithm employs an aging mechanism to determine process priority?

Accepted Answer

Priority Aging

Answer

Round Robin

Answer

Shortest Job First

Answer

Least Recently Used

Question 42

What is a key benefit of utilizing multi-level feedback queues in scheduling?

Accepted Answer

Prioritizing processes based on resource needs and usage

Answer

Eliminating resource starvation

Answer

Reducing context switching

Question 43

Which of the following is NOT a metric used to assess the performance of scheduling algorithms?

Accepted Answer

Code complexity

Answer

Turnaround time

Answer

Throughput

Answer

Average waiting time

Question 44

For load balancing in systems with multiple processors, which scheduling algorithm is most appropriate?

Accepted Answer

Gang Scheduling

Answer

Shortest Job First

Answer

Least Recently Used

Answer

Priority Scheduling

Question 45

Which scheduling algorithm operates in a non-preemptive manner?

Accepted Answer

First Come First Served (FCFS)

Answer

Shortest Job First

Answer

Priority Scheduling (preemptive)

Answer

Round Robin

Question 46

The First-Come, First-Served (FCFS) scheduling algorithm is known for its simplicity and fairness. However, what is a potential drawback of FCFS?

Accepted Answer

Long wait times for short processes

Answer

Inefficient for real-time systems

Answer

High CPU utilization

Answer

Difficult to implement

Question 47

What is the primary advantage of the Shortest Job First (SJF) scheduling algorithm?

Accepted Answer

Minimizes average waiting time

Answer

Simplifies resource allocation

Answer

Prioritizes real-time processes

Answer

Ensures fairness among processes

Question 48

Which scheduling algorithm is best suited for handling real-time processes that have strict deadlines?

Accepted Answer

Priority Scheduling

Answer

Round Robin

Answer

Shortest Job First (SJF)

Answer

First-Come, First-Served (FCFS)

Question 49

Consider a system where a process arrives at time 0 with a burst time of 5 units, followed by another process arriving at time 1 with a burst time of 2 units. Which process would be executed first using a preemptive Shortest Remaining Time (SRT) algorithm?

Accepted Answer

The process arriving at time 1 with a burst time of 2 units

Answer

Both processes would be executed simultaneously

Answer

The process with the highest priority

Answer

The process arriving at time 0 with a burst time of 5 units

Question 50

Which of the following is NOT a standard performance metric used to evaluate scheduling algorithms?

Accepted Answer

Memory utilization

Answer

Average waiting time

Answer

Average turnaround time

Answer

CPU utilization

Question 51

In a multilevel feedback queue scheduling algorithm, which queue typically has the shortest time quantum?

Accepted Answer

The highest priority queue

Answer

The time quantum is dynamically adjusted based on process behavior

Answer

The lowest priority queue

Answer

All queues have the same time quantum

Question 52

Which scheduling algorithm assigns a fixed amount of CPU time to each process in a round-robin fashion?

Accepted Answer

Round Robin

Answer

First-Come, First-Served (FCFS)

Answer

Priority Scheduling

Answer

Shortest Job First (SJF)

Question 53

In a real-time operating system, which scheduling algorithm is commonly used to ensure that critical tasks meet their deadlines?

Accepted Answer

Rate Monotonic Scheduling

Answer

Round Robin

Answer

First-Come, First-Served (FCFS)

Answer

Shortest Job First (SJF)

Question 54

Which scheduling algorithm is known for its ability to effectively handle processes with varying resource requirements?

Accepted Answer

Priority Scheduling

Answer

First-Come, First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Round Robin