PRJ301 – Full Verified Answers
Which of the following statements are correct about the status of the Http response? Select the one
correct answer
A. A status of 200 to 299 signifies that the request was successful.
B. A status of 300 to 399 is informational messages.
C. A status of 400 to 499 indicates an error in the server
D. A status of 500 to 599 indicates an error in the client. ✔️A
Classes HttpServlet and GenericServlet implement the ___ interface.
A. Servlet
B. Http
C. HttpServletRequest
D. HttpServletResponse ✔️A
You have to send a gif image to the client as a response to a request. Which of the following calls will
you have to make?
A. response.setContentType("image/gif");
B. response.setType("application/gif");
C. response.setContentType("application/bin");
D. response.setType("image/gif"); ✔️A
Consider the code of ReportServlet servlet of a web application. Assuming generateReport() is valid
method and have no problems, which of the following statement about these servlet is true?
A. ReportServlet will throw exception at runtime.
B. ReportServlet.java won't compile.
C. ReportServlet.java will compile and run without any problems. ✔️C
Which method of ReportGeneratorServlet will be called when the user clicks on the URL shown by the
following HTML.
,Assume that ReportGeneratorServlet does not override the service(HttpServletRequest,
HttpServletResponse) method of the HttpServlet class.
(Choose one)
A. doGet(HttpServletRequest, HttpServletResponse);
B. doPost(HttpServletRequest, HttpServletResponse);
C. doHead(HttpServletRequest, HttpServletResponse);
D. doOption(HttpServletRequest, HttpServletResponse); ✔️A
What will be the outcome of executing the following code?
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
response.setContentType("text/plain");
response.setContentLength(6);
PrintWriter out = response.getWriter();
out.write("What's your name? ");
out.write("" + response.isCommitted());
}
A. Won't execute because of a compilation error.
B. An IllegalArgumentException is thrown.
C. An IllegalStateException is thrown.
D. A blank page is returned to the client.
E. "What's" is returned to the client.
F. "What's your name?" is returned to the client. ✔️E
Following is the code for doGet() and doPost() methods of TestServlet.
Which of the statement is correct?
A. This will only work for HTTP GET requests
B. This will only work for HTTP POST requests
,C. This will work for HTTP GET as well as POST requests.
D. It'll throw an exception at runtime, as you cannot call doGet() from doPost().
E. It'll throw an exception at runtime only if a POST request is sent to it. ✔️C
Which of the following is indicated by URL, which is used on the Internet?
A. Information resources(sources) on the Internet
B. E-mail addresses for use in the Internet
C. IP addresses of servers connected to the Internet
D. Owners of PCs connected to the Internet ✔️A
Identify correct statement about a WAR file.(Choose one)
A. It is an XML document.
B. It cannot be unpackaged by the container.
C. It is used by web application developer to deliver the web application in a single unit.
D. It contains web components such as servlets as well as EJBs. ✔️D
See the extract from web.xml of web application "mywebapp" on server named myserver, runs on port
8080:
<servlet-mapping>
<servlet-name>ServletA</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ServletB</servlet-name>
<url-pattern>/bservlet.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ServletC</servlet-name>
, <url-pattern>*.servletC</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ServletD</servlet-name>
<url-pattern>/dservlet/*</url-pattern>
</servlet-mapping>
Given that a user enters the following into her browser, which (if any) of the mapped servlets will
execute? (Choose one.)
http://myserver:8080/mywebapp
A. ServletA
B. ServletB
C. ServletC
D. ServletD ✔️A
A parameter is defined in a <context-param> element of the deployment descriptor for a web
application. Which of the following statements is correct?
A. It is accessible to all the servlets of the webapp.
B. It is accessible to all the servlets of all the webapps of the container.
C. It is accessible only to the servlet it is defined for. ✔️A
A .................... manages the threading for the servlets and JSPs and provides the necessary interface
with the Web server.
A. Web Container
B. EJB Container
C. Servlets
D. Applets ✔️A
Which of the following statements are correct about the status of the Http response? Select the one
correct answer
A. A status of 200 to 299 signifies that the request was successful.
B. A status of 300 to 399 is informational messages.
C. A status of 400 to 499 indicates an error in the server
D. A status of 500 to 599 indicates an error in the client. ✔️A
Classes HttpServlet and GenericServlet implement the ___ interface.
A. Servlet
B. Http
C. HttpServletRequest
D. HttpServletResponse ✔️A
You have to send a gif image to the client as a response to a request. Which of the following calls will
you have to make?
A. response.setContentType("image/gif");
B. response.setType("application/gif");
C. response.setContentType("application/bin");
D. response.setType("image/gif"); ✔️A
Consider the code of ReportServlet servlet of a web application. Assuming generateReport() is valid
method and have no problems, which of the following statement about these servlet is true?
A. ReportServlet will throw exception at runtime.
B. ReportServlet.java won't compile.
C. ReportServlet.java will compile and run without any problems. ✔️C
Which method of ReportGeneratorServlet will be called when the user clicks on the URL shown by the
following HTML.
,Assume that ReportGeneratorServlet does not override the service(HttpServletRequest,
HttpServletResponse) method of the HttpServlet class.
(Choose one)
A. doGet(HttpServletRequest, HttpServletResponse);
B. doPost(HttpServletRequest, HttpServletResponse);
C. doHead(HttpServletRequest, HttpServletResponse);
D. doOption(HttpServletRequest, HttpServletResponse); ✔️A
What will be the outcome of executing the following code?
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
response.setContentType("text/plain");
response.setContentLength(6);
PrintWriter out = response.getWriter();
out.write("What's your name? ");
out.write("" + response.isCommitted());
}
A. Won't execute because of a compilation error.
B. An IllegalArgumentException is thrown.
C. An IllegalStateException is thrown.
D. A blank page is returned to the client.
E. "What's" is returned to the client.
F. "What's your name?" is returned to the client. ✔️E
Following is the code for doGet() and doPost() methods of TestServlet.
Which of the statement is correct?
A. This will only work for HTTP GET requests
B. This will only work for HTTP POST requests
,C. This will work for HTTP GET as well as POST requests.
D. It'll throw an exception at runtime, as you cannot call doGet() from doPost().
E. It'll throw an exception at runtime only if a POST request is sent to it. ✔️C
Which of the following is indicated by URL, which is used on the Internet?
A. Information resources(sources) on the Internet
B. E-mail addresses for use in the Internet
C. IP addresses of servers connected to the Internet
D. Owners of PCs connected to the Internet ✔️A
Identify correct statement about a WAR file.(Choose one)
A. It is an XML document.
B. It cannot be unpackaged by the container.
C. It is used by web application developer to deliver the web application in a single unit.
D. It contains web components such as servlets as well as EJBs. ✔️D
See the extract from web.xml of web application "mywebapp" on server named myserver, runs on port
8080:
<servlet-mapping>
<servlet-name>ServletA</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ServletB</servlet-name>
<url-pattern>/bservlet.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ServletC</servlet-name>
, <url-pattern>*.servletC</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ServletD</servlet-name>
<url-pattern>/dservlet/*</url-pattern>
</servlet-mapping>
Given that a user enters the following into her browser, which (if any) of the mapped servlets will
execute? (Choose one.)
http://myserver:8080/mywebapp
A. ServletA
B. ServletB
C. ServletC
D. ServletD ✔️A
A parameter is defined in a <context-param> element of the deployment descriptor for a web
application. Which of the following statements is correct?
A. It is accessible to all the servlets of the webapp.
B. It is accessible to all the servlets of all the webapps of the container.
C. It is accessible only to the servlet it is defined for. ✔️A
A .................... manages the threading for the servlets and JSPs and provides the necessary interface
with the Web server.
A. Web Container
B. EJB Container
C. Servlets
D. Applets ✔️A
