1. In UNIX, which of the following command is used to set the task priority ? a. init b. nice c. kill d. PS

 2. Which of the following flags are set when ‘JMP’ instruction is executed ? a. SF and CF b. AF and CF c. All flags d. No flag is set

 3. Everything below the system call interface and above the physical hardware is known as ______. a. Kernel b. Bus c. Shell d. Stub

 4. Linux operating system uses a. Affinity Scheduling b. Fair Preemptive Scheduling c. Hand Shaking d. Highest Penalty Ratio Next

 5. In Unix, how do you check that two given strings a and b are equal? a. test $a -eq$b b. test $a -equal$b c. test $a =$b d. both a and c

 6. The directory structure used in Unix file system is called a. Hierarchical directory b. Tree structured directory c. Directed acyclic graph d. Graph structured directory

 7. Which statement  is not true about process 0 in the Unix operating system? a. Process 0 is called init process b. Process 0 is not created by fork system call c. After forking process 1, process O becomes swapper process d. Process 0 is a special process created when system boots
 8. Which or the following commands would return process_id of sleep command? a. Sleep 1 and echo $? b. Sleep 1 and echo # c. Sleep 1 and echo$* d. Sleep 1 and echo \$!