Interview Questions For Unix system Administrators

A Unix law administrator is a extremely technical private who is responsible for maintaining a multi-user computer system, including a local-area network. He or she adds and configures new workstations, set up user accounts, installs system-wide software, perform procedures to forestall the spread of viruses, and allocate mass storage space.

Listed below are some tasteless interview questions that come up again and again during interviews for the post of Unix law administrator.

Apache

1. What do you mean by a semaphore?

A semaphore is a type of inter process communication reserved supply used for synchronization and mutual exclusion between any two asynchronous processes.

2. What do you understand by Com?

Com or Component Object Model is a Microsoft platform for software components. It is used to enable cross-application communication and dynamic object creation in any programming language that supports the technology. Com is often used in the software amelioration world as an umbrella term that encompasses the Ole, ActiveX, Com+ and Dcom technologies.

3. Can you please tell us what exactly Unix is?

Unix is a computer operating law originally developed by Ken Thompson and Dennis Ritchie in 1969 by a group of At&T employees at Bell Labs. It runs on a range of computers from microprocessors to the largest mainframes.

4. What is a kernel? What are the functions of a kernel?

The kernel is a part of the Operating law that interacts directly with the hardware of computer, straight through gadget drivers that are built into the kernel. It provides set of services that can be used by programs, insulating these programs from the basic hardware. A kernel is responsible for managing computer memory, allocating reserved supply of the computer, controlling access to the computer, maintaining file law and handling interrupts and errors.

5. What are your technical skills for this post?

Well, I am familiar with Sun, Solaris and Cisco Hardware, Tcp/Ip, Jumpstart, Veritas Volume Manager, C-shell, Perl Oracle 8i, My Sql, Solaris Production, Apache, Sun Server, Unix and Linux.

6. Please tell us some career exact tasks that you have performed in your previous organization?
In my previous assosication I used to monitor and tune system, produce and declare the documents, library and procedural documents and install and configure the modem, routers, hubs and Lan terminal servers.

Well, these are some very leading questions that are asked in interviews for this post and I am very inescapable that my narrative would authentically help you to riposte them with great confidence.

Interview Questions For Unix system Administrators

Apache Interview Questions

1) What's the command to stop Apache?

kill the definite process that httpd is running under, or killall httpd. If you have apachectl installed, use apachectl stop.

Apache

2) What is mod_vhost_alias?

It allows hosting multiple sites on the same server via simpler configurations.

3) What does htpasswd do?

It creates a new user in a specified group, and asks to specify a password for that user.

4) If you specify both deny from all and allow from all, what will be the default action of Apache?

In case of ambiguity deny always takes precedence over allow.

5) How do you change the default web root?

The clarification is to change the DocumentRoot in httpd.conf file.

6) How to do Url Rewriting using Apache?

By using Apache module mod_rewrite we can do url rewriting. It is a beyond doubt sophisticated module which provides a excellent way to do Url manipulations.

7) How do you set up Apache to need a username and password to way safe bet documents?

By using htpasswd program we can apply authentication to safe bet documents.
For detailed steps, go to: http://www.apacheweek.com/features/userauth

8) How do I turn automatic directory listings on or off?

If a client requests a Url that designates a directory and the directory does not include a filename that matches the DirectoryIndex directive, then mod_autoindex can be configured to present a listing of the directory contents.

To turn on automatic directory indexing, find the Options directive that applies to the directory and add the Indexes keyword. For example:

Options +Indexes

To turn off automatic directory indexing, take off the Indexes keyword from the approved Options line. To turn off directory listing for a single subdirectory, you can use Options -Indexes. For example:

Options -Indexes

Apache Interview Questions