OS-Unit-1

Operating Systems is a program that controls the execution of application programs.

• True

• False

The usage of Multiprocessor systems leads to

• Increased throughput

• Economy of scale

• Increased reliability

• All the options

OS is interrupt driven.

• Likely

• Most Likely

• Not Likely

• Less Likely

____________ operation allows OS to protect itself and other system components.

• Single Computer

• Multiple Computer

• User mode

• Dual Mode

The number of Transitions required to run a system call.

• 1

• 2

• 3

• 4

The most like-able response time in time sharing systems is less than _______. (Type the integer value)

_______ Memory allows execution of processes not completely in memory.

• Primary

• Secondary

• Virtual

• Cache

The size of memory is always in the power of ____.

• 1

• 2

• 3

• 4

The non OS Services are,

• User Interface

• Program Execution

• Error Detection

• Communications

• None

System Call Parameter passing method:

• Registers

• Block

• Queue

• Array