High 12 Apache HTTP Server Interview Questions Solutions for Net Builders

Howdy guys, if you’re getting ready for net developer interviews then you will need to put together questions on Apache HTTP net server, one of the vital common net server on web. Figuring out how Apache Wb Server works not solely reveals that you’ve sensible expertise but additionally exhibit your perspective about studying issues in depth. The Apache HTTP Server, often known as httpd, has been the most well-liked net server on the Web since April of 1996. It’s each free and strong and that is the rationale that virtually half of the world’s web sites  runs on Apache HTTP net server, starting from small pastime web sites to very large e-commerce giants and large banks. There are additionally many firms which use Apache and Tomcat to host Java net utility. In a typical setup, Apache net server receives the HTTP request and relying upon the URL it both path to Tomcat or serve the static information immediately from the file system.

Since many funding banks and large firms use Apache httpd server along with Tomcat in order that they will serve static sources utilizing Apache and dynamic useful resource utilizing Tomcat, these questions additionally test your understanding of how Apache httpd net server and Tomcat work collectively in Linux.

12 Apache Net and HTTP Server Interview Questions with Solutions

Right here is my listing of Apache net server interview questions. The listing is certainly not full or exhaustive, it simply accommodates some important inquiries to confirm if a candidate has really labored in Apache net server and Tomcat or not. I intend to maintain this listing up-to-date and add few extra questions every time I discover them from my discuss with mates and colleagues interviewing. You can even assist to share Apache and Tomcat associated questions you might have confronted earlier than on Java or Net growth interviews.

1) What’s Apache Net Server?
Apache Net Server is likely one of the most safe, highly effective, and common open-source HTTP servers. It may be used to host something from private web sites to company domains. The Apache HTTP Server, often known as “httpd” (HTTP daemon) was launched in 1995 and it has been the most well-liked net server on the Web since April 1996. The newest model of the Apache Net server is Apache httpd 2.4.23 which was launched on 2016-07-05.

2. Does Apache assist HTTP-only or does it additionally assist HTTPS?
Apache helps each HTTP and HTTPS protocols. It’s an HTTP/1.1 specification compliant net server

3. How do you discover the port on which Apache Net Server is listening?
You possibly can test the httpd.conf file for the key phrase “Hear”, which defines the port on which Apache listens. Alternatively, you should use netstat command in Linux to seek out the port on which the Apache net server is listening as proven under:

$ netstat -nap | grep httpd
tcp 0 0 0.0.0.0:10202 0.0.0.0:* LISTEN 3988/httpd

4. How do you discover which requests are forwarded to tomcat?
You possibly can test the mod_jk.conf and staff.properties file to seek out out about load balancer and the port on which they’re listening. So, suppose Tomcat is listening on port 23454 then the request approaching that port to Apache will probably be forwarded to the Tomcat.

5. How do you begin and cease Apache Net Server in Linux?
You should use the next instructions to start out and cease the Apache net server in Linux

$ cd bin -- the place bin is apache bin listing
$ ./apache.sh cease
$ ./apache.sh begin

6. How do you discover which model of Apache Net Server you might be utilizing?
Simply run the next command within the bin listing of Apache net server, it’ll show the model

$ ./apache.sh model

7. What’s the distinction between a restart and a sleek restart of an internet server?
Reply: Throughout a traditional restart, the server is stopped after which began, inflicting some requests to be misplaced. A sleek restart permits Apache kids to proceed to serve their present requests till they are often changed with kids working the brand new configuration. See Professional Apache (Knowledgeable’s Voice) to study extra concerning the fundamentals of the Apache HTTP server.

8. What’s the foremost distinction between and sections?
Reply: The Listing sections discuss with file system objects; Location sections discuss with parts within the handle bar of the online web page

9. What’s DocumentRoot?
Reply: it’s a location of information that are accessible by purchasers. By default, the Apache HTTP server in RedHat Enterprise Linux is configured to serve information from the /var/www/html/ listing.

10. restart a Apache net server?
Reply: service httpd restart or  /and so on/init.d/httpd restart. You can even refer Apache CookBook to study extra concerning the day-to-day stuff of Apache net server e.g. tuning logging or including some frequent modules.

11. What are some necessary configuration information of Apache HTTP Server?
The httpd.conf is the principle config file for Apache net server. In case your Apache is speaking to Tomcat then you can too see mod_jk.conf,  staff.properties and alias.properties in conf folder.

12. Which configuration information you’ll look to grasp how Apache communicates to Tomcat?
The mod_jk.conf and the staff.properties file is used to specify tomcat associated config like which URL ought to be routed to tomcat, which port to pay attention and so on

That is all about some basic Apache Net Server Interview Questions and Solutions. These questions will make it easier to to grasp Apache HTTP server extra in little extra element and offer you some thought of what you may anticipate in Java and Net growth interview which require creating enterprise net functions utilizing Java applied sciences like Servlet, JSP, JSF, Spring, or JEE, and so on.

Btw, Apache is used not simply in Java house however anyplace the place an internet server is required to serve HTML information or different static sources. You possibly can discovered Apache with.NET initiatives and even PHP initiatives, even many of the web websites are constructed utilizing Apache, PHP, MySQL, and Linux. You can even learn Professional Apache (Knowledgeable’s Voice) or Apache: The Definitive Information to study extra about Apache fundamentals, Safety, SSL, Efficiency, and error dealing with in Apache.