Web Design and Development MCQs with Answers
Practice important Web Design and Development MCQs with answers and explanations.
Chapter: 41
Q621:
What method does MatrixDAO use to store matrix data into the database?
A. saveMatrix
B. convertToObject
C. multiply
D. getMatrix
Correct Answer:
A
Chapter: 41
Q622:
Which JSP page is responsible for displaying the resultant matrix?
A. matrixinput.jsp
B. matrixresult.jsp
C. controller.jsp
D. matrixMultiplier.jsp
Correct Answer:
B
Chapter: 41
Q623:
What does the toString method in the MatrixBean class return?
A. Matrix data as a 2D array
B. Matrix data as a single string
C. Matrix data in XML format
D. Matrix data in JSON format
Correct Answer:
B
Chapter: 42
Q624:
In the provided code, which method is used to multiply two matrices?
A. convertToObject
B. multiply
C. saveResult
D. getMatrix
Correct Answer:
B
Chapter: 42
Q625:
What does the processRequest method in the ControllerServlet do?
A. It processes HTTP requests and forwards data to JSPs
B. It converts strings into MatrixBeans and performs multiplication
C. It validates user input
D. It generates HTML for client presentation
Correct Answer:
B
Chapter: 42
Q626:
Which technology is used to connect Java applications to databases in the Data Layer?
A. JDBC
B. EJB
C. JNDI
D. RMI
Correct Answer:
A
Chapter: 42
Q627:
What was introduced by Sun Microsystems in the later half of 1997 as an alternative to CGI programming?
A. JSP
B. Servlet API
C. HTML
D. JavaScript
Correct Answer:
B
Chapter: 42
Q628:
What drawback of the Servlet API prompted the creation of JavaServer Pages (JSP)?
A. Lack of performance
B. Complexity in implementation
C. Security issues
D. Cost
Correct Answer:
B
Chapter: 42
Q629:
What is the main purpose of Expression Language (EL) in JSP?
A. To replace HTML
B. To simplify expressions in JSP
C. To manage server-side scripts
D. To enhance security
Correct Answer:
B
Chapter: 42
Q630:
Which version of JSP allowed the use of EL with template text?
A. JSP 1.0
B. JSP 2.0
C. JSP 2.1
D. JSP 3.0
Correct Answer:
B
Chapter: 42
Q631:
How is the Expression Language (EL) inspired?
A. From SQL
B. From ECMAScript and XPath
C. From Python
D. From Ruby
Correct Answer:
B
Chapter: 42
Q632:
What is a major benefit of using EL over scriptlets in JSP?
A. Requires advanced scripting knowledge
B. Awkward syntax
C. Direct access and easier syntax
D. Limited to specific tags
Correct Answer:
C
Chapter: 42
Q633:
Which of the following operators can be used in EL expressions?
A. Arithmetic operators only
B. Logical operators only
C. Relational operators only
D. All of the above
Correct Answer:
D
Chapter: 42
Q634:
What does the ${empty name} expression in EL check for?
A. Whether the name is null
B. Whether the name is empty or null
C. Whether the name has a value
D. Whether the name is a string
Correct Answer:
B
Chapter: 42
Q635:
How does EL handle null objects?
A. Throws a NullPointerException
B. Returns zero
C. Returns an empty string
D. Returns null without exception
Correct Answer:
D
Chapter: 42
Q636:
Which scope has the highest priority for variable lookup in EL?
A. Page scope
B. Request scope
C. Session scope
D. Application scope
Correct Answer:
A
Chapter: 42
Q637:
What type of object does the dot (.) operator in EL typically access?
A. Arrays
B. Collections
C. Properties of an object
D. Cookies
Correct Answer:
C
Chapter: 42
Q638:
How is the bracket ([ ]) operator used in EL?
A. To access array elements
B. To access properties of an object
C. To retrieve request parameters
D. To perform arithmetic operations
Correct Answer:
A
Chapter: 42
Q639:
In the example code, what is the purpose of the index.jsp page?
A. To display search results
B. To collect input for two numbers
C. To submit search data
D. To store user preferences
Correct Answer:
C
Chapter: 42
Q640:
How does the result.jsp page demonstrate the use of EL?
A. By calculating the sum of two numbers using EL
B. By displaying the input fields for numbers
C. By setting properties using JSP action tags
D. By retrieving user data from the database
Correct Answer:
A