BCS 053 Solved Guess Paper 2026 for Web Programming (IGNOU Bachelor of Computer Applications, BCA)

JSP life cycle and the three JSP directives

Question: (a) What is JSP? Explain the JSP life cycle with the help of its methods. (b) Explain the three types of directives used in a JSP document.

(a) JSP and its life cycle

Java Server Pages (JSP) is a web technology that helps software developers to create dynamic content based web pages.

JSP is an extension of the Java Servlet. When a JSP page is first requested, the container translates it into a servlet, compiles it, and from then on the page serves requests as that servlet.

Three methods control the life cycle:

1. jspInit(): called only once, to initialise the objects and variables used for the whole life of the page.
2. _jspService(): called on every request; it handles the request and the response and cannot be overridden.
3. jspDestroy(): called when the page is taken out of service, for clean-up such as releasing database connections.

(b) The three JSP directives

Directives guide the container while it translates and compiles the page. They are written inside <%@ ... %> and produce no output of their own.

1. page: global settings for the page, through attributes such as language, import, buffer, errorPage and isErrorPage.
2. include: inserts the content of another static file (HTML or JSP) into the current page at translation time.
3. taglib: makes a custom tag library available to the page through a uri and a prefix.

Conclusion: JSP mixes static HTML with dynamic Java; the three life-cycle methods and the three directives are the parts IGNOU asks about most.

Why this answer scores: Name all three methods with their brackets and say when each one runs. The December 2025 paper asked only for the page directive with syntax, so keep one line of syntax per directive ready.

Session management and cookies in JSP

Question: (a) What is session management? Explain the different session tracking methods. (b) What is a cookie? Write the commands to create a cookie named 'txtcookie' and set its life to 5 minutes.

(a) Session management and tracking methods

HTTP is a stateless protocol, so the server keeps no memory of earlier requests. Session management fixes this by recording a user's activity across a series of requests. There are four tracking techniques:

1. Cookies: small pieces of information stored in the client browser and sent back with each request.
2. URL rewriting: a token is added to the URL as a query parameter and carried from page to page.
3. Hidden fields: the token travels as the value of an HTML hidden field inside the submitted form.
4. Session objects: the data stays on the server and the browser holds only a unique token that points to it.

(b) Cookies

A cookie is a small piece of information that is sent by the server to the client browser. It is stored at the client machine in the form of a text file.

A cookie is created from the Cookie class with a name and value pair, its life is set in seconds with setMaxAge(), and it is then added to the response. For a cookie named txtcookie that lives for 5 minutes:

Cookie c = new Cookie("txtcookie", "value");
c.setMaxAge(5 * 60);   // 5 minutes = 300 seconds
response.addCookie(c);

Conclusion: cookies live on the client while session objects live on the server; both keep state across the stateless HTTP protocol.

Why this answer scores: Set the age before calling addCookie(). Many answer books write it the other way round, and a sharp evaluator will notice. The December 2023 paper asked exactly this create-and-set-life question.

JDBC connection steps and the four driver types

Question: (a) Explain the steps involved in connecting to a database using JDBC. (b) Explain the four types of JDBC drivers.

(a) Connection steps using JDBC

A Java API (Application Programming Interface) that enables a JSP program to execute SQL statements is called JDBC.

Five steps are followed:

1. Load a JDBC driver with Class.forName(drivername).
2. Create a connection with DriverManager.getConnection(dbURL), which returns a Connection object.
3. Create a statement: Statement stmt = con.createStatement();
4. Process the results: ResultSet rs = stmt.executeQuery(query); and read the rows with next().
5. Close the connection by calling close() on the ResultSet, the Statement and the Connection.

(b) Four types of JDBC drivers

1. Type 1, JDBC-ODBC bridge: turns JDBC calls into ODBC calls; the ODBC driver must be configured on the client.
2. Type 2, native-API, partly Java: turns JDBC calls into DBMS-specific native calls; binary code is needed on each client.
3. Type 3, JDBC-Net, pure Java: works through a middle-tier server and a network protocol; suited to Internet applications.
4. Type 4, native-protocol, pure Java: converts JDBC calls straight into the vendor's database protocol; platform independent and the fastest.

Conclusion: JDBC follows five fixed steps and offers four driver types; Type 1 suits prototyping while Type 4 gives the best performance.

Why this answer scores: Write each step with its method call. The June 2023 paper gave a Programme table and a ready statement object and asked for the code fragment, so practise one executeQuery() loop that prints two columns.

WAP protocol stack, WML decks and cards

Question: (a) What is WAP? Explain the WAP protocol stack. (b) What is WML? Explain WML decks and cards, and list its navigational elements.

(a) WAP and its protocol stack

WAP (Wireless Application Protocol) is simply a communication protocol by which a wireless device talks to a server installed in a wireless network.

The WAP stack borrows most of its ideas from the ISO-OSI reference model and has five layers:

1. Application layer (WAE): the Wireless Application Environment, holding WML and WMLScript.
2. Session layer (WSP): an organised exchange of content between client and server.
3. Transport layer (WTP): reliable delivery of data packets over the wireless medium.
4. Security layer (WTLS): an optional layer based on SSL for privacy and authentication.
5. Network layer (WDP): the bottom datagram layer that shields the upper layers from bearer services.

(b) WML, decks and cards

WML is the markup language defined in the WAP specification. WML is an application of XML.

A single WML screen is called a card, and related cards sit together in one file called a deck. The key difference from HTML is the unit of navigation: HTML moves page by page, WML moves card by card. The navigational elements are <do>, <a>, <anchor> and <go>.

Conclusion: WAP reaches wireless devices through a five-layer stack, and WML, an XML application, arranges content as cards inside decks.

Why this answer scores: Draw the five layers as a stack, top to bottom, with the short forms in brackets. WAP or WML has appeared in every one of the six papers, so this answer is close to a sure question.

Validating XML with DTD and XML Schema

Question: (a) What is DTD? Explain its role in XML and its two ways of declaration. (b) What is XML Schema? How is it different from a DTD?

(a) Document Type Definition (DTD)

A Document Type Definition (DTD) defines the legal building blocks of an XML document. It defines the document structure with a list of elements and attributes.

When a DTD is supplied, the parser checks the document against its rules and raises an error, showing where processing failed, if the document does not conform. A DTD can be declared in two ways:

1. Internal: written inside the document, as <!DOCTYPE root-element [ element-declarations ]>
2. External: kept in a separate file, as <!DOCTYPE root-element SYSTEM "filename">

(b) XML Schema (XSD)

XML Schema is described as the successor to DTD.

Also called XML Schema Definition (XSD), it describes the structure of an XML document but is more powerful because it has a rich data-typing system and is itself written in XML. Common built-in types are xs:string, xs:decimal, xs:integer, xs:boolean, xs:date and xs:time.

Conclusion: both DTD and XSD validate XML structure, but XSD is the XML-based successor with strong data typing.

Why this answer scores: Give one line of each declaration syntax and close with the three-row table. In June 2023, IGNOU asked students to write the DTD for an XML document they had just created, so be ready to write one.