EC6703 ERTS 2marks
Anna University Regulation 2013 ECE EC6703 ERTS 2marks & 16marks for all 5 units are provided below. EC6703 ERTS Short answers, Question Bank for Embedded Real Time Systems Engineering are listed down for students to make perfect utilization and score maximum marks with our study materials.
UNIT -3 PROCESS AND OPERATING SYSTEMS 2marks
1. Define Process?
Process is a computational unit that processes on a CPU under the control of a scheduling kernel of an OS. It has a process structure, called Process control block. A process defines a sequentially executing program and its state.
2. What is meant by operating system?
An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function.
3. What is termed as task?
A task is a set of computations or actions that processes on a CPU under the control of a scheduling kernel. It also has a process control structure called a task control block that saves at the memory. It has a unique ID. It has states in the system as follows: idle, ready, running, blocked and finished.
4. What are the states of a process?
Processes may be in any one of the 5 states,
a. New – The process is in the stage of being created.
b. Ready – The process has all the resources available that it needs to run, but the CPU is not currently working on this process’s instructions.
c. Running – The CPU is working on this process’s instructions.
d. Waiting – The process cannot run at the moment, because it is waiting for some resource to become available or for some event to occur. For example the process may be waiting for keyboard input, disk access request, inter-process messages, a timer to go off, or a child process to finish.
e. Terminated – The process has completed.
5. Define Scheduling?
This is defined as a process of selection which says that a process has the right to use the processor at given time.
6. What is scheduling policy?
It says the way in which processes are chosen to get promotion from ready state to running state.
7. What is scheduling overhead?
It is defined as time of execution needed to select the next execution process.
8. Define priority scheduling?
A simple scheduler maintains a priority queue of processes that are in the runnable state.
9. Give the different styles of inter-process communication?
x Shared memory.
x Message passing.
EC6703 ERTS Unit 3 2marks & 16marks – Download Here
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