Computing and Informatics
What is meant by a system call?
A system call is an interrupt to the operating system to perform some activity. On receiving a system call CPU su…
Computing and Informatics
What is meant by a process in an operating system?
Process in Operating System A process is program under execution. It includes the code, data, stack and processor …
Computing and Informatics
What do you understand by client server system?
Client server system A client server system is a computing system that is composed of two logical parts, a server whi…
Computing and Informatics
What is MTA?
Message Transfer Agent Meaning The actual mail transfer is done through message transfer agent . To send mail, a syst…
fundaments of design and manufacturing
Between recursion and iteration, which is more efficient?
Recursion and Iteration Difference Both iteration and recursion are based on a control statement. Iteration uses…
What is a function prototype?
A function prototype is a function declaration that specifies the data types of its arguments in the parameter list.…
What do you understand by structured programming?
Structured programming is a technique for organising and coding computer programs in which a hierarchy of modules is…
What is sequential logic?
A sequential logic is a circuit whose output depends on current input and previous values stored in the flip flops i…
What do you mean by secondary memory?
Secondary memory is mass storage devices used to store data permanently. Example: Hard Disk
Explain how one can recall a previously used DOS command by pressing some key?
In DOS F9 key is used to visit history from where they can be taken and executed, when F9 is pressed system will ask c…
What is a global variable?
Global variables are those variables which are visible to all functions. Any function can read/modify them. Global var…
What is the purpose of exit command?
This command is used to quit a program. When exit command is executed, the current program is terminated.
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