FUNDAMENTALS OF COMPUTER

OPERATING SYSTEMS FOR COMPUTERS

COMPUTER OPERATING SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
which of these scheduling methods processes jobs in the order they arrive?
A
round robin
B
shortest remaining time
C
shortest job first
D
first come first served
Explanation: 

Detailed explanation-1: -Priority scheduling is a non-preemptive algorithm and one of the most common scheduling algorithms in batch systems. Each process is assigned a priority. Process with highest priority is to be executed first and so on. Processes with same priority are executed on first come first served basis.

Detailed explanation-2: -The full form of FCFS Scheduling is First Come First Serve Scheduling. FCFS Scheduling algorithm automatically executes the queued processes and requests in the order of their arrival. It allocates the job that first arrived in the queue to the CPU, then allocates the second one, and so on.

Detailed explanation-3: -FCFS is an operating system scheduling algorithm that automatically executes queued requests and processes in order of their arrival. In this type of algorithm, the processes that request the central processing unit (CPU) first, get the CPU allocation first.

Detailed explanation-4: -1. First-Come, First-Served (FCFS) In this scheduling algorithm, jobs are executed on a first come, first serve basis irrespective of burst time or priority. It is both a preemptive and non-preemptive scheduling algorithm.

Detailed explanation-5: -FCFS is the simplest disk scheduling algorithm. As the name suggests, this algorithm entertains requests in the order they arrive in the disk queue. The algorithm looks very fair and there is no starvation (all requests are serviced sequentially) but generally, it does not provide the fastest service.

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