1. Two programs of worm are

grappling hook program

main program

both (a) and (b)

none of these

2. Audit log can be used to

determine how and when the problem occurred

what amount of damage was done

when security has been violated

all of these

3. Worm was made up

one program

two programs

three programs

all of these

4. An audit log

simply records the time

user

type of all access to an object

all of these

5. The security of a system can be improved by

threat monitoring

audit log

both (a) and (b)

none of these

6. Trap door

could be included in a compiler

pose a difficult problem because, to detect them

both (a) and (b)

none of these

7. Threat monitoring technique is

the system can check for suspicious patterns of activity in an attempt to detect a security violation

a time sharing a system that counts the number of incorrect passwords given

both (a) and (b)

none of these

8. Trojan Horse

A code segment that misuses its file is called Trojan horse

good for file accessing

both (a) and (b)

none of these

9. Protection against computer viruses is

preventation

practice of safe computing

purchasing unopened software from vendors

avoiding free or pirated copies from public sources

10. Program threats are

trap doors

Trojan Horse

both (a) and (b)

none of these