If you are wondering how to crack an Apache Tomcat Interview, no worries, Mindmajix will help you by offering the top 40 Apache Tomcat Interview Questions with Answers. Mindmajix content experts have curated the most-useful Apache Tomcat Interview Questions and Answers in this blog. Here, You will learn Apache Tomcat architecture, valves, connectors, port numbers, virtual hosts, tomcat clusters, and many more. Once you read all these Apache Tomcat Interviews and Answers, cracking your Apache Tomcat Interview is not a big deal.
Apache Tomcat is an open-source software released by the Apache software foundation. It is also a web server widely used by java applications. With Apache Tomcat, we can run java applications on host machines seamlessly. The significant thing about Apache Tomcat is that it powers many mission-critical web applications across many organizations.
Mindmajix content expert team has compiled the top 40 Apache Tomcat interview questions and answers. These Apache Tomcat interview questions cover a wide array of topics on the subject. Once you have done reading the questions and answers, you will gain a solid knowledge of Apache Tomcat and walk to your interview with courage.
Importantly, Mindmajix offers questions and answers for different types of learners. So, based on your priority, you can directly jump into the right section and learn them. The different sections are given as follows
Apache server is an open-source web server invented by the Apache software foundation. It is also the java servlet system and JSP container widely used by Java developers. Apache Tomcat works based on the HTTP protocol. It allows users to connect easily with Tomcat using a link.
|If you want to enrich your career and become a professional in Apache Tomcat, then enroll in "Core Java Training" - This course will help you to achieve excellence in this domain.|
It is the Java enterprise edition of Apache Tomcat. It is the Jakarta EE 9.1 certified application server. Not only that, it is a compatible implementation of the Java EE6 web profile. Simply put, TomEE is the combination of Tomcat and Jakarta EE. It provides support for servlets and JSP.
The server, engine, service, connector, host, and context are the core components of tomcat architecture. The server is nothing but a whole container. Service exists inside a server. It connects many connectors together as an engine. The engine is a request processing pipeline. An engine can have many hosts. A connector manages communication with clients. Context is nothing but a web application.
We can start and stop Apache Tomcat using batch files. In this regard, we use the batch files such as startup.bat and shutdown.bat to start and stop Apache Tomcat, respectively.
We can link a java instance class with a Catalina container with the help of the tomcat valve.
Session Timeout is one of the configuration settings specified in web.xml. It is the time duration that the server will wait for when there is an idle session. It is essential to note that no process will happen inside the server during this idle time.
AJP Connector supports load balancing. It denotes a connector component used to communicate with a web connector through an AJP protocol. Not only that, we can use this connector to integrate Tomcat with an apache installation and manage the static content used in a web application.
The Crucial Configuration file is known as httpd.conf.
If we want Tomcat to consider a specific IP, we need to mention the IP, and PORT in the listen drive. It is essential to note that we use listen only when developers use multiple IPs.
The following are the checks offered by Apache Tomcat.
The typical Tomcat directory hierarchy consists of the following
Catalina.out is the main log file created by Apache Tomcat. It is the file used to find error messages. In some cases, you need root account privileges to view log files.
Tomcat Coyote is an HTTP connector that sends and receives web requests to the Tomcat engine. It listens to a TCP/IP port and interacts with the requesting client.
Catalina’s configuration files are given as follows
Jasper is nothing but Apache Tomcat’s JSP engine. During execution, Jasper automatically tracks changes in JSP files and recompiles them.
This file contains a list of roles, user names, and passwords. In a way, it is a simple file with the root element as tomcat-users, whereas the child elements are role and user. Know that each role has one attribute named 'role name’ and each user has three attributes such as ‘password’, ‘name’, and ‘roles’.
Tomcat offers high uptime at the same time, prevents faults in the system. For example, if one of the servers fails to function in the tomcat cluster, another server will start functioning immediately. In other words, users will receive uninterrupted services from the tomcat servers.
Context represents a web application, and it runs within a virtual host. Web applications are used to process HTTPS requests. Also, every web application is based on a web application archive (WAR) file.
A Tomcat Cluster is a collection of multiple servers that work together as a single system. We use load balancers to connect the servers together by using the server’s network port and IP address. It is essential to note that every node in a tomcat cluster shares session data with other nodes in the cluster by data replication.
We use SSL with Tomcat when we need to handle connections. Importantly, Tomcat must be running as a stand-alone web server when we use SSL with Tomcat.
It is used to connect a java instance of a java class with a Catalina container.
Apache Tomcat creates log files in the /opt/bitnami/tomcat/logs directory. The main log file is catalina.out. You can find error messages in this file.
We must follow the standard instructions to use integrated windows security. Also, you must disable tomcat authentication in the server.xml.
We can use both operators interchangeably. However, it would be better if we use. operator while executing a bean property. Similarly, we can use the [ ] operator while running a map value. Not only that, we can use the use [ ] operator while executing an array index.
The output will display default database tables.
Tomcat has four different configuration valves as follows
You can install Apache Tomcat in the following two methods:
Apache server is used as the web server since it works as a web server and servlet container. Also, it doesn't provide the complete feature set of Java EE.
Tomcat offers many security headers, such as X-Frame options, X-Content-Type options, X-XSS-Protection, and HSTS.
We can prevent memory leaks by unregistering the drivers associated with the web application when we uninstall the application. Otherwise, memory leaks in tomcat will continue until we shut down the web server.
Tomcat creates a session ID once the client enables a request to the server. Then, this session ID is named JSESSIONID and inserted into a cookie. When the server responds to the client request, the session id also is sent along with that.
Apache Tomcat can be used as a java API as well as a Java web service interface. Java developers widely use it for building and maintaining websites. We can run java applications as well as server-based systems on host machines using Apache Tomcat. Additionally, we can run JSP and Servlets using Apache Tomcat.
Catalina, Jasper, and Coyote are the three core components of Apache Tomcat.
It is a web container where you can run servlet and JAVA server pages. It can also be used as an HTTP server. It can be used for hosting java based code. Also, it can manage both static and dynamic pages.
Tomcat Server handles dynamic content with the help of java-based logic. On the other side, the Apache HTTP server handles static content such as HTML, audio, images, and text.
Yes, we can run Tomcat without an apache server since Tomcat has its own web server.
The default port number of Apache Tomcat is 8080. It means that Tomcat must run http://localhost:8080. We can ensure this in our local machine after initializing Tomcat.
Tomcat is a TCP. This is because Tomcat is a web server that works with the HTTPS protocol. And this protocol is TCP based, essentially.
There are three ports in Tomcat such as 8005, 8080, and 8009.
Be an early bird: Always aim to be early to your interviews at least 15 minutes earlier – no matter whether it is an online interview or offline interview. This 15 mins breathing time will help you recollect the subject you have prepared. Mainly, you will attend your interview calmly and relaxed.
1. Speak Appropriate: You need to answer only with the relevant answers. You need to brief your answers when interviewers expect simple answers. Similarly, you shouldn't give short answers when they wish for detailed explanations.
2. Understand Thoroughly: while preparing for your interview, you must thoroughly learn all the subject concepts. If you have any doubts, refer to related content in other blogs, refer to books, ask your friends, mentors, etc. one crucial thing is, please never attend interviews with half-baked knowledge.
3. Test Yourself: Before attending an interview, test yourself by attending mock interviews, practicing quizzes, and interacting with subject experts or seniors. It will help you locate where you are right now regarding your preparation. Also, you can identify your areas for improvement and rectify them.
4. Do not underestimate or overestimate: You shouldn’t underestimate that your interviewers may ask simple questions. At the same time, you do not fear that they may ask complicated questions. Balance your thoughts in such a way that you will face any questions with your good preparation.
On a final note, we are sure that all these 40 Apache Tomcat Interview Questions and answers might have helped you to sharpen your knowledge and boost your confidence. Now, you will definitely be way ahead of your competitors in the Interview. Know that there are plenty of opportunities across various organizations for candidates familiar with Java tools. So, if you complete a Java course, you can get placed in a good organization as soon as possible. Well, Mindmajix offers many Java courses. You can best use these courses to ace your Interviews successfully.
Stay updated with our newsletter, packed with Tutorials, Interview Questions, How-to's, Tips & Tricks, Latest Trends & Updates, and more ➤ Straight to your inbox!
|Core Java Training||Apr 01 to Apr 16|
|Core Java Training||Apr 04 to Apr 19|
|Core Java Training||Apr 08 to Apr 23|
|Core Java Training||Apr 11 to Apr 26|
Madhuri is a Senior Content Creator at MindMajix. She has written about a range of different topics on various technologies, which include, Splunk, Tensorflow, Selenium, and CEH. She spends most of her time researching on technology, and startups. Connect with her via LinkedIn and Twitter .
Copyright © 2013 - 2023 MindMajix Technologies