Tag: web technology

Quizzes (208) Questions (4176)

Questions Related to web technology

Multiple choice technology web technology

What method can be used to retrieve all the parameter names being sent as part of the request by the client?

  1. Use the method 'HttpServletRequest.getParameterNames()' which will return an enumeration of parameter names.

  2. Use the method 'HttpServletResponse.getParameterNames()' which will return an enumeration of parameter names.

  3. Use the method 'HttpServletRequest.getAllParameters()' which will return an enumeration of parameter names.

  4. There is no direct support in the Servlet API to retrieve the name of all the parameters sent by the client.

Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology web technology

What will be the output of the following JSP code snippet at run-time when it is accessed the third time? <% int test = 0; %> <% ++test; %> The value of test is <%= test %>

  1. The value of the 'test' variable will be 2.

  2. The value of the 'test' variable will be 0.

  3. The value of the 'test' variable will be 1.

  4. The variable 'test' must be declared at global scope, else a run-time error will occur
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology web technology

Following is an excerpt taken from a Deployment Descriptor of some Web Application. app-name MockQuestions ContextInfoServlet scwcd14.chap03.ContextInfoServlet app-name ContextInfoServlet Which of the following code will output the message 'MockQuestions ContextInfoServlet' to the client browser (assuming that 'out' is a valid instance of type 'PrintWriter' class)?

  1. out.println(config.getServletContext().getParameter("app-name")); out.println(config.getInitParameter("app-name"));

  2. out.println(config.getInitParameter("app-name")); out.println(config.getServletContext().getInitParameter("app-name"));

  3. out.println(config.getServletContext().getInitParameter("app-name")); out.println(config.getInitParameter("app-name"));

  4. out.println(config.getServletContext().getInitParameter("app-name")); out.println(config.getParameter("app-name"));

Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology web technology

What method can be used to retrieve all the parameter names being sent as part of the request by the client?

  1. Use the method 'HttpServletRequest.getParameterNames()' which will return an enumeration of parameter names.

  2. Use the method 'HttpServletResponse.getParameterNames()' which will return an enumeration of parameter names.

  3. Use the method 'HttpServletRequest.getAllParameters()' which will return an enumeration of parameter names.

  4. There is no direct support in the Servlet API to retrieve the name of all the parameters sent by the client.

Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology web technology

What is the equivalent action code for the following piece of JSP code snippet? EmployeeBean harry = (EmployeeBean)request.getAttribute("harry"); if (harry == null) { harry = new EmployeeBean(); request.setAttribute("harry", harry); }

  1. <jsp:declareBean id = "harry" class = "EmployeeBean" scope = "request" />

  2. <jsp:createBean id = "harry" class = "EmployeeBean" />

  3. <jsp:useBean id = "harry" class = "EmployeeBean" scope = "request" />

  4. <jsp:useBean id = "harry" class = "EmployeeBean" />

Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology web technology

What will be the output of the following JSP code snippet at run-time when it is accessed the third time? <% int test = 0; %> <% ++test; %> The value of test is <%= test %>

  1. The value of the 'test' variable will be 2.

  2. The value of the 'test' variable will be 0.

  3. The value of the 'test' variable will be 1.

  4. The variable 'test' must be declared at global scope, else a run-time error will occur
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology web technology

Given the deployment descriptor for a Web Application is

  1. The Servlet will output 'javabeat null' in the Server Console.

  2. The Servlet will fail to load as the init param property 'no-name' is not mentioned in the deployment descriptor

  3. A NullPointerException will be raised as calling getServletConfig() in the init() method will return a null reference.

  4. The Servlet will output 'javabeat ' in the Server Console.

Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation