Operating System Mock Test 6

10%

Question 1 of 10

1. Which desktop environment is not used in any linux distribution?

none of the mentioned

unity

gnome

kde

Question 1 of 10

Question 2 of 10

2. What will happen during the recovery from a failure?

each pair of physical block is examined

specified pair of physical block is examined

first pair of physical block is examined

none of the mentioned

Question 2 of 10

Question 3 of 10

3. What is the role of Key Distribution Center?

It intended to reduce the risks inherent in exchanging keys

All of the mentioned

None of the mentioned

It is used to distribute keys to everyone in world

Question 3 of 10

Question 4 of 10

4. Which one of the following is not a secondary storage?

RAM

None of the mentioned

Magnetic disks

Magnetic tapes

Question 4 of 10

Question 5 of 10

5. The three ways in which a process responds to a signal are ____________

performing some default action

handling the signal

ignoring the signal

all of the mentioned

Question 5 of 10

Question 6 of 10

6. If a process does not call exec after forking ____________

all the threads should be duplicated

the program specified in the parameter to exec will replace the entire process

all the threads should not be duplicated

none of the mentioned

Question 6 of 10

Question 7 of 10

7. Which of the following is not TRUE?

Processes may send each other signals

Kernel may send signals internally

A field is updated in the signal table when the signal is sent

Each signal is maintained by a single bit

Question 7 of 10

Question 8 of 10

8. The valid - invalid bit, in this case, when valid indicates?

the page is in memory

the page is illegal

the page is not legal

the page is not in memory

Question 8 of 10

Question 9 of 10

9. A fork system call will fail if ______________

the limit on the maximum number of processes in the system would be executed

all of the mentioned

the limit on the minimum number of processes that can be under execution by a single user would be executed

the previously executed statement is also a fork call

Question 9 of 10

Question 10 of 10

10. Thread synchronization is required because ___________

all threads of a process share the same global variables

all threads of a process share the same address space

all of the mentioned

all threads of a process can share the same files

Question 10 of 10