Chapter 26

Question 1

What is application server

Answer 1

If there is large data then servlets use application server instead to sending directly to RDBMS. Application server then communicates to RDBMS

Question 2

What are java servlet

Answer 2

A Java servlet is a Java program that extends the capabilities of a server. Although servlets can respond to any types of requests, they most commonly implement applications hosted on Web servers. Such Web servlets are the Java counterpart to other dynamic Web content technologies such as PHP and ASP.NET

Question 3

What are the advantages of servlets

Answer 3

• Can use Java API’s e.g. JDBC
• Portable across servers and operating systems
• Good security

Question 4

What are requirements for servlet

Answer 4

• J2SE
• Additional J2EE based libraries for servlets
• A capable servlet web engine

Question 5

In tomcat installation, we set some environment variable. one is JAVA_HOME. What is it for

Answer 5

For JDK

Question 6

In tomcat installation, we set some environment variable. one is CATALINA_HOME. What is it for

Answer 6

For tomcat installation

Question 7

What is the default port of tomcat

Answer 7

8080