question 151-200

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

Daisy chain is a device for

• interconnecting a number of devices to a number of controllers

• connecting a number of devices to a controller

• connecting a number of controllers to a device

A non-relocatable program is one which

• consists of a program and relevant information for its relocation.

• all of the choices

• can itself performs the relocation of its address-sensitive portions.

• cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.

The operating system of a computer serves as a software interface between the user and

• memory

• screen

• hardware

• peripheral

The dispatcher

• puts tasks in I/O wait

• is always small and simple

• actually schedules the tasks into the processor

• never changes task priorities

Which one of the following is not true?

• kernel is made of various modules which can not be loaded in running operating system

• kernel is the program that constitutes the central core of the operating system

• kernel remains in the memory during the entire computer session

• kernel is the first part of operating system to load into memory during booting

What is a short-term scheduler?

• It selects which process to remove from memory by swapping

• It selects which process has to be executed next and allocates CPU

• It selects which process has to be brought into the ready queue

Which module gives control of the CPU to the process selected by the short-term scheduler?

• scheduler

• dispatcher

• interrupt