Questions and Answers
What issue is commonly associated with lower priority threads?
What type of file is web.xml classified as?
Which of the following environment variables is typically not configured during the installation of Apache Tomcat?
To transition a newly created thread to the 'ready state', which method should be called?
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Which of the following is not a package related to servlets?
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DSN is an abbreviation that commonly stands for what?
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How many servlet contexts does a single web application possess?
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Files in packages are typically organized based on which of the following criteria?
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When is a JSP page translated into a servlet?
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For a bean class, which statement correctly describes its requirement regarding serialization?
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JSP action elements are primarily used to interact with which of the following?
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What does MVC stand for in the context of application design?
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In software architecture, layers represent which aspect of an application?
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Tiers represent which view of application?
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Managed Beans in Java are primarily defined in which type of file?
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What does UDDI stand for?
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Which of the following is identified as a standard web-based application framework?
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Which component is classified as a general-purpose container?
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In the directory structure of web components, which elements are typically included?
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From most visible to least visible, what is the correct order for Bean scope in JSP pages?
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Which of the following framework components is not typically associated with modern web applications?
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Study Notes
Thread Management Issues
- Lower priority threads can face starvation, where they do not get the necessary CPU time due to higher priority threads constantly executing.
- Average waiting time for lower priority threads may increase, affecting overall system performance.
Web.xml Overview
- Web.xml is a crucial configuration file that defines the deployment descriptor for a web application in Java.
Apache Tomcat Server Configuration
- During the installation and configuration of the Apache Tomcat server, the classpath variable value is typically not set by default.
- Other variables like JAVA_HOME, CATALINA_HOME, and JDK_HOME are usually configured.
Thread State Management
- A newly created thread can transition to the "ready state" by invoking the start() method, preparing it for execution.
Servlet Packages
- The package javax.servlet.servlet is considered a non-standard servlet related package and does not exist within the Java servlet framework.
- Valid servlet-related packages typically include javax.servlet and associated components.
Data Source Name and Application Context
- DSN stands for Data Source Name, essential for database setup.
- Each web application has exactly one ServletContext accessible to all resources within that application.
Package Organization and JSP Translation
- Files are organized in packages based on functionality, usability, and category.
- A JSP page is translated into a servlet only once upon its initial access.
Bean Serializable Requirement and JSP Action Elements
- A bean class must be serializable, ensuring its state can be saved and restored.
- JSP action elements facilitate interaction with JavaBeans.
MVC and Application Views
- MVC stands for Model View Controller, a design pattern for developing user interfaces.
- Layers provide a logical view of an application, while tiers represent its physical view.
Managed Beans and UDDI
- Managed Beans are JavaBeans defined in a configuration file.
- UDDI stands for Universal Description, Discovery & Integration, a framework for publishing and locating web services.
Web-Based Application Frameworks and General Purpose Containers
- JSF (JavaServer Faces) is recognized as a standard web-based application framework.
- JPanel is an example of a general-purpose container used in graphical user interfaces.
Directory Structure in Web Components
- The directory structure of web components includes html, JSP, images, web.xml, and classes folder.
- IDEs like NetBeans simplify the creation of web.xml and directory structures for developers.
Bean Scope Order in JSP
- The correct order for bean scope in JSP from most visible to least visible is page, request, session, application.
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Description
Test your knowledge on threads, web configuration, and Apache Tomcat server setup with this quiz. Answer questions about thread priority issues, servlet files, and variable values during installation. Challenge yourself to see how well you understand these essential computer science concepts.
