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Java Enterprise and Web Technologies

2,183 Questions

Java enterprise and web technologies questions focus on J2EE architecture, web services like SOAP, and servlet functionalities. These topics frequently appear in IT officer and specialist scale examinations. Regular practice ensures familiarity with enterprise application components.

HttpServlet methodsSOAP and web servicesEJB architecture rolesJ2EE componentsJSP servlet callingUDDI concepts

Java Enterprise and Web Technologies Questions

Multiple choice technology programming languages

Which of the following statement is true for the tag

  1. It offers option of sharing local variables and better run time efficiency

  2. Can be used to incorporate contents from static documents

  3. Provides benefit of automatic recompilation

  4. Can include dynamically generated output
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Explanation

The JSP include directive (<%@ include %>) incorporates static documents into JSPs at translation time, merging content before compilation. When the included file changes, the JSP automatically recompiles. However, it cannot handle dynamically generated output - dynamic inclusion requires jsp:include action. Local variables cannot be shared through the directive.

Multiple choice technology platforms and products

An administrator sees the following message in the process server's SystemOut.log:"java.lang.ClassCastException: com.ibm.ws.bo.bomodel.impl. DynamicBusinessObjectlmpI incompatible with Java.util.Collection"The administrator decides to enable server tracing to gather more detailed diagnostic data about the error message. How should the administrator enable server tracing?

  1. Specify the trace string BOCore=all.

  2. Specify the trace string com.ibm.bpe.*=finest.

  3. Use the Log Analyzer to identify which components to trace.

  4. Set the trace string as described in the IBM Support document for Business Objects.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The correct approach is to consult IBM's official support documentation for the specific trace strings needed for Business Objects errors. Generic trace strings like 'BOCore=all' or 'com.ibm.bpe.*=finest' are not necessarily the right solution. Log Analyzer is a diagnostic tool, not a configuration method for enabling tracing.

Multiple choice technology platforms and products

A company is installing WebSphere Process Server V6.1 and wants to have both WebSphere Process Server V6.1 servers and WebSphere Application Server V6.1 servers on the same machine. They have licenses and installation disks for both products. They also want to reduce the number of steps and resources required.Which procedure accomplishes these goals?

  1. Use both WebSphere Application Server and WebSphere Process Server installers to create two installations in separate locations. The respective profiles will be created from each installation.

  2. Use the WebSphere Process Server installer from the WebSphere Process Server disks. This will install a complete version of WebSphere Application Server. Both types of profiles can be created from the resulting installation.

  3. Use the WebSphere Application Server installer first provided on the WebSphere Process Server disks. Use the WebSphere Process Server installer to add WebSphere Process Server functionality to the installation. Both types of profiles can be created from t

  4. Use the WebSphere Application Server installer first from the WebSphere Application Server disks. Use the WebSphere Process Server installer to add WebSphere Process Server functionality to the installation. Both types of profiles can be created from the

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

WebSphere Process Server V6.1 includes a complete WebSphere Application Server V6.1 installation. Installing WebSphere Process Server alone provides both WAS base functionality and WPS features, allowing creation of both profile types from a single installation.

Multiple choice technology platforms and products

Which application checks that a WebSphere Process Server installation has completed successfully?

  1. First Steps Console

  2. Profile Management Tool

  3. IBM Installation Manager

  4. Installation Verification Tool
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Installation Verification Tool (IVT) is a specialized utility provided by IBM to validate that WebSphere Process Server installations completed successfully. It runs comprehensive tests to verify all components are properly installed and functional. Other options like First Steps Console and Profile Management Tool serve different purposes - they help with configuration and profile creation, not installation verification.

Multiple choice technology platforms and products

A company wants to create a clustered topology for a set of applications that use BPEL processes. The deployment manager has already been successfully created. The next task is to create the profile for the first node for the cluster. The administrator runs the Profile Management Tool to begin the process. After the Welcome screen, the Environment Selection panel is displayed with options. Which option should the administrator elect?

  1. Custom Profile

  2. Application server

  3. Deployment manager

  4. WebSphere Process Server

  5. WebSphere Enterprise Service Bus (WESB)

  6. Cell (deployment manager and a federated application server)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When creating a profile for a WebSphere Process Server cluster node, you must select the WebSphere Process Server profile type in the Profile Management Tool. This profile type includes the BPEL runtime and Business Process Container required for BPEL applications. A Custom Profile would be insufficient as it lacks these process server-specific components. Application server profile alone doesn't include WebSphere Process Server features.

Multiple choice technology architecture

Which pattern is applied by the bean factory to seperates the configuration from the actual application code

  1. Aspect Oriented Programming

  2. Inversion Of Control

  3. Object Oriented Programming

  4. Simple Pattern
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Inversion of Control (IoC) is the design pattern where the Bean Factory manages object creation and dependency injection, separating configuration metadata from actual business logic code. This promotes loose coupling and easier testing.

Multiple choice technology programming languages

Which of the following directories are legal locations for the deployment descriptor file? Note that all paths are shown as from the root of the machine or drive.

  1. /WEB-INF

  2. /appserverInstallDirectory/webapps/webappName/WEB-INF/xml

  3. /appserverInstallDirectory/webapps/webappName/WEB-INF

  4. /appserverInstallDirectory/webapps/webappName/WEB-INF/classes
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

In Java web applications, the deployment descriptor (web.xml) must be located in the WEB-INF directory. Valid locations include /WEB-INF directly, or the full path like /appserverInstallDirectory/webapps/webappName/WEB-INF. However, it cannot be in subdirectories like /WEB-INF/xml or /WEB-INF/classes - it must be directly in the WEB-INF folder itself.

Multiple choice technology programming languages

Identify which of the following are true statements about web applications

  1. The only way to access resources under the /WEB-INF directory is through appropriate servlet mapping directives in the deployment descriptor

  2. Server-side code has access to all resources in the web application

  3. Clients of web applications can't directly access resources in /WEB-INF/tld.

  4. A good place to keep a .tld (tag library file) is directly in the /WEB-INF directory.
Reveal answer Fill a bubble to check yourself
B,C,D Correct answer
Explanation

In Java web applications: (A) is false because server-side code can also access /WEB-INF resources via ServletContext.getResourceAsStream(). (B) is true - server-side code has full access. (C) is true - clients cannot directly access /WEB-INF contents. (D) is true - /WEB-INF is the standard location for .tld files. The correct answers are B, C, D.

Multiple choice technology enterprise content management

What is JVM ?

  1. Java Visual Mode

  2. Java Virtual Machine

  3. Java Virtual Manual

  4. Java View Mode
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

JVM stands for Java Virtual Machine, which is the execution engine that runs Java bytecode by providing a runtime environment. It's not a visual mode, manual, or view mode - it's the fundamental component that enables Java's platform independence by abstracting the underlying hardware.

Multiple choice technology enterprise content management

FTP can invoke webMethods IS services by using virtual directories to point to services. What is the FTP command to navigate to the virtual directory representing the service "companyx.inbound:postToERP" stored in the Utils package?

  1. cd /Utils/companyx/inbound/postToERP

  2. cd /invoke/companyx.inbound/postToERP

  3. cd /ns/companyx/inbound/postToERP

  4. cd /ns/companyx.inbound/postToERP
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In webMethods Integration Server, the namespace (ns) virtual directory is used to access services via FTP. The correct path syntax to navigate to a service in a package is cd /ns/ followed by the folder path and service name, which is /ns/companyx/inbound/postToERP.

Multiple choice technology enterprise content management

The Developer can be used to create Integration Server schemas which correspond to XML documents. Which components of these IS schemas can then be edited using the Developer?

  1. Primitive Data Types

  2. Simple Data Types

  3. Complex Data Types

  4. IS schemas may not be edited
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In webMethods Developer, when creating Integration Server schemas from XML documents, you can edit Simple Data Types to apply constraints or facets. Complex types represent structural elements derived from the XML schema and cannot be directly modified in the same way.