Class 11

Information Technology (802)

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321

Convert: 3 KB = ______ GB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 3 KB = 3 x 1024^2 GB = 3145728 GB.
322

Which JOptionPane method shows a modal dialog box that prompts the user for text input?

MCQ Medium
a. showMessageDialog()
b. showConfirmDialog()
c. showInputDialog()
d. showOptionDialog()
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
showInputDialog()
Explanation: showInputDialog() displays a modal dialog with a text box for the user to enter input.
323

Convert: 1 MB = ______ TB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 1 MB = 1 x 1024^2 TB = 1048576 TB.
324

Getter methods in Java GUI components typically start with which word?

MCQ Easy
a. set
b. get
c. is
d. has
Information Technology (802) · Class 11 · Sep 26, 2026
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get
Explanation: Getter methods extract information from an object and typically start with 'get' (e.g., getText()).
325

Convert: 2 MB = ______ TB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 2 MB = 2 x 1024^2 TB = 2097152 TB.
326

Deleting a parent (container) control also deletes all its child controls.

TRUE FALSE Medium
a. TRUE
b. FALSE
Information Technology (802) · Class 11 · Sep 26, 2026
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TRUE
Explanation: Since child controls are placed inside a parent/container control, deleting the parent deletes all its children.
327

Convert: 3 MB = ______ TB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 3 MB = 3 x 1024^2 TB = 3145728 TB.
328

Two components on the SAME form can have identical names.

TRUE FALSE Medium
a. TRUE
b. FALSE
Information Technology (802) · Class 11 · Sep 26, 2026
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FALSE
Explanation: Objects on the same form cannot have the same name, though two different forms may contain objects with the same name.
329

Convert: 1 Bytes = ______ MB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 1 Bytes = 1 x 1024^2 MB = 1048576 MB.
330

What is the purpose of the setEnabled() method for a jButton?

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: The setEnabled() method enables or disables the button, controlling whether the user can interact with it, using syntax: <button-name>.setEnabled(boolean b);
331

Convert: 2 Bytes = ______ MB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 2 Bytes = 2 x 1024^2 MB = 2097152 MB.
332

Differentiate between jTextField and jTextArea, and between jComboBox and jList.

LONG Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: jTextField allows entry/display of only a single line of text, whereas jTextArea allows multiline input/output and automatically adds scroll bars when needed. jComboBox is a drop-down box from which a user selects one option by clicking the drop-down arrow, whereas jList provides a scrollable list of items from which one or more items may be selected at once.
333

Convert: 3 Bytes = ______ MB (Hint: use the conversion chain).

SHORT Hard
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 3 Bytes = 3 x 1024^2 MB = 3145728 MB.
334

Which Java data type would be most appropriate to store a person's age (a small whole number)?

MCQ Medium
a. byte
b. double
c. String
d. char
Information Technology (802) · Class 11 · Sep 26, 2026
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byte
Explanation: byte (1 byte, range -128 to 127) is suitable for small integer values like age; using it appropriately saves memory.
335

Write an SQL query to display PrName and UnitPrice of products with unit price above 25000 from table GYM.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT PrName, UnitPrice FROM GYM WHERE UnitPrice > 25000;
336

Which data type is used in Java to store a single character, enclosed in single quotes?

MCQ Easy
a. String
b. char
c. byte
d. boolean
Information Technology (802) · Class 11 · Sep 26, 2026
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char
Explanation: The char data type stores a single character and its value is enclosed within single quotes, e.g., 'A'.
337

Write an SQL query to display PrName and UnitPrice of products with unit price between 15000 and 25000 from table GYM.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT PrName, UnitPrice FROM GYM WHERE UnitPrice BETWEEN 15000 AND 25000;
338

What is the storage size of the 'int' data type in Java?

MCQ Medium
a. 1 byte
b. 2 bytes
c. 4 bytes
d. 8 bytes
Information Technology (802) · Class 11 · Sep 26, 2026
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4 bytes
Explanation: The int data type occupies 4 bytes (32 bits) and stores whole numbers in the range -2^31 to +(2^31 - 1).
339

Write an SQL query to display PrName and UnitPrice of products manufactured by 'Fit Express' from table GYM.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT PrName, UnitPrice FROM GYM WHERE Manufacturer = 'Fit Express';
340

Which operator is used to test whether two values are equal in Java?

MCQ Easy
a. =
b. ==
c. !=
d. ===
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
==
Explanation: The relational operator == tests whether two values are equal; a single '=' is the assignment operator.