When a user application requests a service from the operation system is referred as ___________
What is boot strap in a computer operating system?
Which of the following is the smallest operating systems run on credit card sized devices containing a CPU chip?
In DOS, ECHO command is used to ________________
Which of the following is single user operating system?
When a computer is turned on after it has been completely shut-down is called ___________
Layer 5 of the OSI model is _________
The operating system does all of the following EXCEPT:
Data are accumulated and processed in group called