Realtime Interview Questions of UNIX Administrator?

Hy Guy’s here I am searching for the Realtime Interview Questions of UNIX Administrator so please can you give me the interview question and also provide me the page where I can get the interview question of UNIX Administrator.

[Arvind Kumar]

UNIX Interview Questions are given below:

What is called a page fault?
How the Kernel handles the copy on write bit of a page, when the bit is set?
What are the bits that support the demand paging?
How do you create special files like named pipes and device files?
At what mode the fault handler executes?
For which kind of fault the page is checked first?
What do you mean by nice value?
Predict the output of the following program code
Difference between the fork() and vfork() system call?
How the Kernel handles the fork() system call in traditional Unix and in the System V Unix, while swapping?
What is the working set of a process?
What is a Map?
Write a command to kill the last background job?
What is page fault? Its types?
73. explain kernal and shell.
What are the process states in Unix?
Explain kill () and its possible return values.
Explain fork() system call.
What are links and symbolic links in UNIX file system?
What difference between cmp and diff commands?
Explain the following commands.
What is the use of the command "ls -x chapter [1-5]?”
What is a zombie?
What do you mean by the protection fault?
What is 'inode'?
What are the processes that are not bothered by the swapper? Give Reason.
What is a Daemon?
How can you get/set an environment variable from a program?:
How to terminate a process which is running and the specialty on command kill 0?
How does the inode map to data block of a file?
What is BSS(Block Started by Symbol)?
In what way the Fault Handlers and the Interrupt handlers are different?
What is a shell?
What are various IDs associated with a process?
What are the entities that are swapped out of the main memory while swapping the process out of the main memory?
What are states that the page can be in, after causing a page fault?
What is a pipe and give an example?
Write a command to display a file’s contents in various formats?
What will the following command do?
What Happens when you execute a command?
Is it possible to create new a file system in UNIX?
What is the main goal of the Memory Management?
What Happens when you execute a program?
Name the data structure used to maintain file identification?
What is ‘the principle of locality’?
Brief about the initial process sequence while the system boots up.
How are devices represented in UNIX?
What are the criteria for choosing a process for swapping into memory from the swap device?
Which are typical system directories below the root directory?
How to switch to a super user status to gain privileges?
What is IPC? What are the various schemes available?
How is the command “$cat file2 “different from “$cat >file2 and >> redirection operators?
What do you mean by u-area (user area) or u-block?
What is the use of ‘grep’ command?
What are the UNIX system calls for I/O?
What does the command “$who | sort –logfile > newfile” do?
Name two paging states for a page in memory?
What are the requirements for a swapper to work?
How do you execute one program from within another?
How the Swapper works?
Is ‘du’ a command? If so, what is its use?
Which command is used to delete all files in the current directory and all its sub-directories?
What is a Region?
In what way the validity fault handler concludes?
What is Expansion swap?
What is validity fault?
What is the window of the working set of a process?
Explain the steps that a shell follows while processing a command.
Is the Process before and after the swap are the same? Give reason.
What are the phases of swapping a page from the memory?
Construct pipes to execute the following jobs.
What are the events done by the Kernel after a process is being swapped out from the main memory?
Is it possible to count number char, line in a file; if so, How?
What is redirection?
How the Kernel handles both the page stealer and the fault handler?
What is an advantage of executing a process in background?
List the system calls used for process management:
How do you change File Access Permissions?
What are shell variables?
74. What is ex and VI?
What is Fork swap?
What does the swapping system do if it identifies the illegal page for swapping?
What is the difference between cat and more command?
What is the significance of the “tee” command?
What is major difference between the Historic Unix and the new BSD release of Unix System V in terms of Memory Management?
What is the difference between Swapping and Paging?
How many prompts are available in a UNIX system?
Which of the following commands is not a filter man, (b) cat , (c) pg , (d) head
Brief about the directory representation in UNIX
What is a FIFO?
How can a parent and child process communicate?
What is 'ps' command for?
How does the kernel differentiate device files and ordinary files?
How would you kill a process?
Explain different types of UNIX systems.
What is Page-Stealer process?
What are the criteria for choosing a process for swapping out of the memory to the swap device?
Is it possible to restrict incoming message?
What are data structures that are used for Demand Paging?
What are conditions on which deadlock can occur while swapping the processes?
In what way the protection fault handler concludes?
What scheme does the Kernel in Unix System V follow while choosing a swap device among the multiple swap devices?
What are conditions for a machine to support Demand Paging?
Predict the output of the following program code
What does the command “$ls | wc –l > file1” do?
Discuss the mount and unmount system calls