Web Design and Development MCQs with Answers
Practice important Web Design and Development MCQs with answers and explanations.
Multiple Choice Questions
Q261: Which of these can be used to identify a thread?
- A: Thread Id
- B: Thread Name
- C: Thread Priority
- D: All of the above
View Answer
D
Q262: _______ is the method to make a thread wait for another thread to finish.
- A: wait()
- B: notify()
- C: join()
- D: notifyAll()
View Answer
C
Q263: How do you create a scrollable and updatable ResultSet in Java?
- A: By using ResultSet.TYPE_FORWARD_ONLY and ResultSet.CONCUR_READ_ONLY
- B: By using ResultSet.TYPE_SCROLL_INSENSITIVE and ResultSet.CONCUR_UPDATABLE
- C: By using ResultSet.TYPE_SCROLL_INSENSITIVE and ResultSet.CONCUR_READ_ONLY
- D: By using ResultSet.TYPE_FORWARD_ONLY and ResultSet.CONCUR_UPDATABLE
View Answer
B
Q264: Which method should be called to update the underlying database with the new contents of the current row?
- A: moveToInsertRow()
- B: insertRow()
- C: updateRow()
- D: deleteRow()
View Answer
C
Q265: What does the previous() method do in a scrollable ResultSet?
- A: Moves the cursor to the previous row
- B: Moves the cursor to the next row
- C: Moves the cursor to the first row
- D: Moves the cursor to the last row
View Answer
A
Q266: What is the purpose of the updateRow() method in ResultSet?
- A: To update the ResultSet in memory only
- B: To delete the current row from the ResultSet
- C: To insert a new row into the ResultSet
- D: To update the underlying database with the new contents of the current row
View Answer
D
Q267: What does metadata describe in the context of data?
- A: The data itself
- B: Information about the data
- C: The algorithm used for processing data
- D: The software used for data analysis
View Answer
B
Q268: How can ResultSetMetaData help in a database query?
- A: It provides query results directly
- B: It gives information about column names
- C: It executes SQL queries
- D: It provides database connection details
View Answer
B
Q269: Which method of ResultSetMetaData returns the number of columns?
- A: getColumnName()
- B: getColumnCount()
- C: getColumnDisplaySize()
- D: getColumnType()
View Answer
B
Q270: How can you obtain the maximum width of a column in ResultSetMetaData?
- A: getColumnName(int)
- B: getColumnLabel(int)
- C: getColumnDisplaySize(int)
- D: getColumnType(int)
View Answer
C