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Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

1. A developer is designing the presentation tier for a web application that relies on a complex session bean. The session bean is still being developed and the APIs for it are NOT finalized. Any changes to the session bean API directly impacts the development of the presentation tier. Which design pattern provides a means to manage the uncertainty in the API?

A) Front Controller
B) Business Delegate
C) View Helper
D) Chain of Responsibility
E) Composite View
F) Intercepting Filter

2. A web application allows the HTML title banner to be set using a servlet context initialization parameter called titleStr. Which two properly set the title in this scenario? (Choose two.)

A) <title>${params[0].titleStr}</title>
B) <title>${initParam['titleStr']}</title>
C) <title>${titleStr}</title>
D) <title>${initParam.titleStr}</title>
E) <title>${servletParams.titleStr}</title>
F) <title>${paramValues.titleStr}</title>
G) <title>${request.get("titleStr")}</title>

3. You need to store a Java long primitive attribute, called customerOID, into the session scope. Which two code snippets allow you to insert this value into the session? (Choose two.)

A) long customerOID = 47L; session.setNumericAttribute("customerOID", customerOID);
B) long customerOID = 47L; session.setNumericAttribute("customerOID", new Long(customerOID));
C) long customerOID = 47L; session.setLongAttribute("customerOID", customerOID);
D) long customerOID = 47L; session.setLongAttribute("customerOID", new Long(customerOID));
E) long customerOID = 47L; session.setAttribute("customerOID", new Long(customerOID));
F) long customerOID = 47L; session.setAttribute("customerOID", customerOID);

4. One of the use cases in your web application uses many session-scoped attributes. At the end of the use case, you want to clear out this set of attributes from the session object. Assume that this static variable holds this set of attribute names:
201.
private static final Set<String> USE_CASE_ATTRS;
202.
static {
203.
USE_CASE_ATTRS.add("customerOID");
204.
USE_CASE_ATTRS.add("custMgrBean");
205.
USE_CASE_ATTRS.add("orderOID");
206.
USE_CASE_ATTRS.add("orderMgrBean");
207.
}
Which code snippet deletes these attributes from the session object?

A) session.deleteAllAttributes(USE_CASE_ATTRS);
B) for ( String attr : USE_CASE_ATTRS ) {
session.removeAttribute(attr);
}
C) session.removeAll(USE_CASE_ATTRS);
D) for ( String attr : USE_CASE_ATTRS ) {
session.deleteAttribute(attr);
}
E) for ( String attr : USE_CASE_ATTRS ) { session.remove(attr); }

5. Which implicit object is used in a JSP page to retrieve values associated with <contextparam> entries in the deployment descriptor?

A) session
B) request
C) config
D) application

Solutions: