Updated June 23, 2023
Introduction to Apache Interview Questions And Answers
Apache, also known as Apache HTTP web server, is the most powerful and open source to host websites on the web server by hosting the web files on the network. It was initially developed by Robert McCool and Apache Software foundations in 1995.
Now, if you are looking for a job related to Apache, you must prepare for the 2023 Apache Interview Questions. Every interview is indeed different as per the different job profiles. Here, we have prepared the critical Apache Interview Questions and Answers to help you succeed in your interview.
This 2023 Apache Interview Questions article will present the 26 most essential and frequently used Apache interview questions. These interview questions are divided into two parts as follows:
Part 1 –Apache Interview Questions (Basic)
This first part covers basic Apache Interview Questions and Answers.
Q1. What do you mean by Apache Web Server?
Apache web server is the HTTP web server that is open source, and it is used for hosting the website.
Q2. How to check the Apache version?
You can use the command httpd -v.
Q3.Does Apache run on which users, and how to check the location of the config file?
Apache runs on the nobody user, and the config file’s location is /etc/httpd/conf/httpd.conf.
Let us move to the next Apache Interview Questions.
Q4. What is the port of HTTP and HTTPS of Apache?
The port of HTTP is 80, and HTTPs is 443 in Apache.
Q5. How will you install the Apache server on Linux Machine?
This is the common Apache Interview Question asked in an interview. We can give the following command for Centos and Debian, respectively:
Centos: yum install httpd
Debian: apt-get install apache2
Q6. Where are the configuration directories of the Apache webserver?
You can use the following command: cd /etc/HTTP and type ls -l
Q7. Can we install two Apache web servers on one single machine?
Yes, we can install the two Apache web servers on one machine, but we have to define two different ports.
Q8. What Document Root refers to in Apache?
It means the web file location, which is stored on the server. For Eg: /var/www.
Q9. What do you mean by the Alias Directive?
The alias directive is responsible for mapping resources in the file system.
Q10. What do you mean by Directory Index?
It is the first file that the Apache server looks for when any request comes from a domain.
Q11. What do you mean by the log files of the Apache webserver?
We can access the log files of the Apache server from the below location: /var/log/httpd/access_log and error log from /var/log/httpd/error_log.
Q12. What do you mean by a virtual host is Apache?
The virtual host section contains information regarding your Website name, Directory Index, Server Admin and Email, and information on error logs.
Q13. Explain the difference between location and Directory.
For setting the element related to the URL, we use:: Location.
It refers to the location of the files system of the server:: Directory.
Part 2 – Apache Interview Questions (Advanced)
Let us now look at the advanced Apache Interview Questions and Answers.
Q14. What do you mean by Apache Virtual Hosting?
Hosting multiple websites on a single web server is known as Apache Virtual Hosting. There are two types of virtual hosting: Name-Based Virtual Hosting and IP Based Virtual Hosting.
Q15. What do you mean by MPM in Apache?
In Apache, MPM stands for Multi-Processing Modules.
Q16. What do you mean by mod_perl and mod_php?
mod_perl is used for enhancing the performance of Perl scripts.
mod_php is used for enhancing the performance of PHP scripts.
Q17. What do you mean by Mod_evasive?
The module helps the webserver prevent web attacks, e.g., DDOS.
Q18. What do you mean by Loglevel debug in httpd.conf file?
With Loglevel debugs help, we can find more information regarding the error logs used to solve the problem.
Q19. How to start and stop the Apache Web server?
This is the most famous Apache Interview Question asked in an interview. Inside the Apache instance location is a bin folder, and inside the bin folder, there will be an executable script. We can use the below command in the bin folder via the terminal:
For a start: ./apachectl start
For a stop: ./apachectl stop
Q20. What is the command to change the default Listen port?
We can give a command like this Listen 220.127.116.11:8000. This command will change the default listen port and make the listening port is 8000.
Q21. What is the name of the WebLogic module?
The WebLogic module name is so.
Q22. What is the log level of Apache?
The log level is: debug, info, warn, notice, crit, alarm, emerg, and error.
Q23. How will you kill the Apache process?
We can use the below command:
Q24. What do you mean by these error code 200, 403 and 503?
200 – The server is ok.
403 – The server is trying to access the restricted file.
503 –The server is busy.
Q25. How you will check the httpd.conf consistency?
By giving the below command:
Q26. How will you enable the PHP scripts on the server?
We have to follow the steps :
First, install mod_php.
Second run the command : AddHandler application/x-httpd-PHP .phtml .php
These are essential Apache Interview Questions and Answers related to the Apache interview. To clear the interview, practice more about commands and basics. Significantly how to change the settings and questions related to the httpd.conf file.
This has been a guide to the list of Apache Interview Questions and Answers. Here in this post, we have studied top Apache Interview Questions, which are often asked in interviews so that the candidate can crack down on these easily. You may also look at the following articles to learn more –