⟩ Which is the core of the operating system? a) Shell b) Kernel c) Commands d) Script
b) Kernel
b) Kernel
What does the following command do? who | wc -l a) List the number of users logged in b) List the users c) List the number of users in the system d) Display the content of who command
Which of the following files need to be referred for user's secondary group? a) /etc/passwd b) /etc/shadow c) /etc/group d) /etc/profile
Return value of fork() system call can be a) -1,<0,0 b) -1,>0,0
Which niceness value among the following indicate most favorable scheduling? a) 0 b) 19 c) 5 d) -20
Fork returns _____ to parent process on success a) 0 b) child process id c) parent process id d) none
On x86-32 Linux, at which address the code segment of the program starts? a) 0×00000000 b) 0×08048000 c) 0×80000000 d) 0xbfff0000
A system has 512MB of physical memory. Which among the following is not a suitable virtual memory size for this system architecture? a) 512MB b) 256M c) 4GB d) None of the above
LRU stands for a) Last received Unit b) Least recently Used c) Least recently usable d) Lost Recoverd unit
Among these files which has an ELF format a) shared objects b) core c) executables d) all of the above
Any file's attribute information is stored in which structure on the disk a) Inode b) Data blocks c) File blocks d) Directory file