The main function of the command interpreter is

• . to handle the files in operating system

• none of the choices

• to get and execute the next user-specified command

• to provide the interface between the API and application program

In Linux, what command is used to remove the directory?

• rd

• rmdir

• rdir

• remove

With MS-DOS which command will divide the surface of the blank floppy disk into sectors and assign a unique address to each one?

• CHKDSK command

• VER command

• FORMAT command

• FAT command

A system program that combines the separately compiled modules of a program into a form suitable for execution

• cross compiler

• assembler

• load and go

• . linking loader

What is the purpose of 'touch' command?

• It makes a new directory

• It displays the content of a file

• It creates a new empty file

• It updates the timestamp of an already existing file

The system calls in UNIX is written using which language

• Assembly Language

• Fortran

• C

• C++

In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented to point to the next item in the list?

• index addressing

• indirect addressing

• auto increment

• auto decrement

The most common systems security method is

• firewall

• passwords

• encryption

Which of the following is not true about documentation?

• Documentation gives better understanding of the problem

• Documentation, of a system, should be as clear and direct as possible

• Documentation increases the maintenance time and cost

A program that converts a high-level language program to a set of instructions that can run on a computer is called a

• Compiler

• Editor

• Debugger