Operating System

Deadlocks File System I/o System Memory Management Process Concurrency & Synchronization Process Scheduling Protection Virtual Memory

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Operating System - Protection

Trojan-Horse programs

A.	are legitimate programs that allow unauthorized access
B.	are hacker programs that do not show up on the system
C.	really do not usually work
D.	usually are immediately discovered
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

Seeks analysis

A.	is used for analyzing paging problems
B.	is used for analyzing device busy problems
C.	is used for analyzing control-unit busy problems
D.	is only shown on real-time displays
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

Link encryption

A.	is more secure than end-to-end encryption
B.	is less secure than end-to-end encryption
C.	cannot be used in a large network
D.	is used only to detect errors
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

A long-term monitor

A.	should show any immediate performance problems
B.	should show I/O, paging, and processor activity
C.	need show only the I/O and processor activity
D.	usually reports only on terminal displays
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

Device busy

A.	is good, since that means the device is in use
B.	is bad, since that means the device is not available
C.	is bad only if the device busy rate is too high
D.	depends upon the system paging rate
	Answer Report Discuss
	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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