Why would access to the user-agent header field of an HTTP request be important for a JSP?

• A. It allows for form-based input to be passed within the header rather than in a query string.
• B. It allows descriptive information about the device accessing the JSP to be obtained in order to avoid device-specific limitations.
• C. It allows conversational state to be managed by the JSP container by maintaining the session ID of a user.
• D. It provides a secure mechanism to store a user's username and password for safe and easy access during Web-based transactions.

A running Filter must call what method in order to ensure that the next filter in the filter chain is called?

• A. Servlet.doChain(Request,Response);
• B. FilterChain.doFilter(Request,Response);
• C. Filter.doFilter(Request,Response);
• D. Filter.doChain(Request,Response);
• E. FilterChain.doChain(Request,Response);
• F. Servlet.doFilter(Request,Response);

The following excerpt from a JSP is meant to display the following output:
The price without tax is: 100.0
The tax rate is: 0.15
The tax on your purchase is: 15.0
The total cost is: 115.0
Using only the line numbers outlined in the JSP excerpt, identify the three lines that need to be changed to allow for proper translation\compilation\display of the JSP. (Select three answers.) The JSP excerpt with the errors is:
<html>
<body>
1 <%! public double calculateTax(double price)
{return price * taxRate;}%>
2 <% double taxRate = 0.15;%>
3 <% public double calculateTotal(double price, double tax)
{return price + tax;}%>
4 <% double price = 100.00; %>
5 The price without tax is: <%= price %> <br>
6 The tax rate is: <%= taxRate %> <br>
7 The tax on your purchase is: <% calculateTax(price); %> <br>
The total cost is: <%= calculateTotal(price, calculateTax(price))%> <br>
</body>
</html>

• A. Line 4
• B. Line 7
• C. Line 1
• D. Line 6
• E. Line 5
• F. Line 3
• G. Line 2

EJB clients must supply which two of the following pieces of information in order to use JNDI services?

• A. The IP address of a Web container
• B. A provider URL detailing the location of the name tree
• C. The class name of the initial context factory
• D. The DataSource name for a JDBC database