Chapter 5 Flashcards
1
Q
How we denote current working directory
A
.
2
Q
How to display contents of directory
A
ls
3
Q
How to make directory and remove directory in linux
A
mkdir
rmdir
4
Q
How to remove all files from current directory
A
rm *.o
5
Q
gcc stands for what
A
group compile command
6
Q
What is process
A
A program in execution. A process consists of
- code
- data section
- stack
- heap
- environment
- CPU state
- Process control back
7
Q
What are types of processes
A
- I/O bound processes (spends more time doing I/O than computation e.g. print job)
- CPU bound processes (spends more time doing computation e.g. simulation)
8
Q
What are 5 states of process
A
- New state
- Ready state
- Run state
- I/O (waiting) state
- Terminate state
9
Q
What is PCB
A
Its a data structure for process that contain information of - Process state - Program counter - CPU register - CPU scheduling information - Memory-management information - Accounting information - I/O status information - Per process file table - Process ID - Parent process id, etc It is maintain by kernel
10
Q
What are queues types for processing schedule
A
- Job queue
- Ready queue
- Device queue
11
Q
What are job queues
A
Set of all processes in the system
12
Q
What are ready queues
A
Set of all processes residing in main memory, ready and waiting for execute
13
Q
What are device queues
A
Set of processes waiting for I/O devices
14
Q
What are types of schedulers
A
- Long term scheduler
- Medium term scheduler
- Short term scheduler
15
Q
What is long term scheduler
A
It takes jobs from job queue and load them into main memory.
