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2021 Aug 1Z0-899 practice
Q1. You are working on a JSP that is intended to inform users about critical errors in the system. The JSP code is attempting to access the exception that represents the cause of the problem, but your IDE is telling you that the variable does not exist. What should you do to address this problem?
A. Add a page directive stating that this page is an error handler
B. Add scriptlet code to create a variable that refer to the exception
C. Add a <jsp:useBean tag to declare the and access the exception>
D. Perform the error handling in a servlet rather than in the JSP
E. Edit the page that caused the error to ensure that it specifies this page as its error handler
Answer: A
Q2. View the Exhibit.
Given:
10.
<form action=‘create_product.jsp’>
Q3. During initialization, a servlet finds that the database connection it requires is unavailable. As the system designer, you know that the database start up completes several minutes after the web-container initializes the servlet. How should this be handled?
A. Retry the connection until it is successful, then allow the init () method to complete.
B. Throw a ServletException
C. Throw the IOException
D. Throw an UnavailableException
Answer: D
Q4. A developer wants to make a name attribute available to all servlets associated with a particular user, across multiple requests from that user, from the same browser instance.
Which two provide this capability from within a tag handler? (Choose two)
A. pageContext.setAttribute(“name”, theValue);
B. pageContext.setAttribute(“name”, getSession() );
C. pageContext.getRequest().setAttribute(“name”, theValue);
D. pageContext.getSession().setAttribute(“name”, theValue);
E. pageContext.setAttribute(“name”, theValue, PageContext.PAGE_SCOPE);
F. pageContext.setAttribute(“name”, theValue, PageContext.SESSION_SCOPE);
Answer: DF
Q5. Given:
11. <%
12. request.setAttribute (“vals”, new String[] {“1”, “2”, “3”, “4”});
13. request.setAttribute (“index”, “2”);
14. %>
15. <% - - insert code here - - %>
Which three EL expressions, inserted at line 15, are valid and evaluate to “3”? (Choose three)
A. ${vals.2}
B. ${vals [“2”] }
C. ${vals.index}
D. ${vals[index] }
E. ${vals} [index]
F. ${vals. (vals.index) }
G. ${vals [vals[index-1]] }
Answer: BDG
Renovate 1Z0-899 test preparation:
Q6. Which of the following are attributes of the annotation javax.servlet.annotation.WebFiler?
-Name -servletNames -urlPatterns -dispatcherTypes -supportAsync
A. (iii) only
B. (iii) and (iv)
C. (ii), (iii) and (iv)
D. (iii), (iv) and (v)
E. (ii), (iii), (iv) and (v)
Answer: B
Q7. Given an HttpServletRequestrequest and HttpResponseresponse, which sets a cookie “username” with the value “joe” in a servlet?
A. request.addCookie("username", "joe")
B. request.setCookie("username", "joe")
C. response.addCookie("username", "joe")
D. request.addHeader(new Cookie("username", "joe"))
E. request.addCookie(new Cookie("username", "joe"))
F. response.addCookie(new Cookie("username", "joe"))
G. response.addHeader(new Cookie("username", "joe"))
Answer: F
Q8. Which EL expression returns true if no session has been established with current client?
A. ${not(pageContext.session)}
B. ${not(requestScope.session)}
C. ${requestScope.sessions.this}
D. ${sessionScope.empty}
Answer: A
Q9. Given that a web application consists of two HttpServlet classes, ServletA and ServletB, and the ServerletA.service method:
20.
String key = “com.example.data”;
Q10. For manageability purposes, you have been told to add a “count” instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP Document?
A. <jsp:declaration> int count = 0; <jsp:declaration>
B. <%! int count = 0; %>
C. <jsp:declaration.instance> int count = 0; <jsp:declaration.instance>
D. <jsp:scriptlet.declaration> int count = 0; <jsp:scriptlet.declaration>
Answer: A