Linux Interview Questions and Answers – Linux Systems

1. UNIX/Linux kernel is?
a) Monolithic
b) Micro
c) Exo
d) Nano
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2. Monolithic kernel
a) is highly extensiblity
b) has less run time overhead
c) smaller than micro level
d) suitable for real time system
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3. Runlevel system command is used for?
a) getting the present and previous runlevel of the system
b) setting the runlevel attribute of the system in the inittab file
c) can be used to restart or reboot the system
d) all of the mentioned
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4. Pick the run level to run Linux in multi user mode with networking?
a) 0
b) 3
c) 5
d) 6
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5. Section 2 of manpage describes
a) Commands
b) System calls
c) Function calls
d) Drivers
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6. System call can be implemented using which assembly instruction(s) on x86 processors?
a) int 0×80
b) sysenter
c) both int 0×80 & sysenter
d) None
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7. Which of the following exec call is a system call?
a) execl
b) execlp
c) execve
d) execvp
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8. x86 architecture uses big endian or little endian addressing mechanism?
a) little-endian
b) endian
c) big-endian
d) none of the mentioned
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9. ______________ timer is decremented only when the process is executing
a) ITIMER_REAL
b) ITIMER_VIRTUAL
c) ITIMER_PROF
d) None of the mentioned
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10. Daemon process is a?
a) group leader
b) session leader
c) orphan process
d) all of the mentioned
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11. The terminal used by a Daemon process is:
a) any terminal
b) no terminal
c) root terminal
d) system console
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12. shared memory can be used for?
a) read only operations
b) append
c) read or read write operations
d) write only
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13. Sysconf(_SC_PAGE_SIZE) returns?
a) size of the page
b) max size of the page
c) min size of the page
d) paging allowed or not
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