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41

Convert: 5 PB = ______ TB.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 5 PB = 5 x 1024 TB = 5120 TB.
42

In the LIKE clause, which wildcard character replaces zero or more characters?

MCQ Easy
a. _ (underscore)
b. % (percent)
c. * (asterisk)
d. ? (question mark)
Information Technology (802) · Class 12 · Sep 26, 2026
Show answer
% (percent)
Explanation: The % wildcard replaces zero or more random characters in a LIKE pattern; _ replaces exactly one character.
43

Evaluate the Java logical expression: !(2 > 6)

MCQ Medium
a. TRUE
b. FALSE
Information Technology (802) · Class 12 · Sep 26, 2026
Show answer
TRUE
Explanation: Using && (both true), || (either true), and ! (negation) rules, !(2 > 6) evaluates to true.
44

Explain the Input-Process-Output (IPO) cycle of a computer with the role of each functional unit.

LONG Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: Every task follows the Input-Process-Output cycle: the Input unit accepts data/instructions from devices like keyboard and mouse; the Central Processing Unit (comprising the Arithmetic Logic Unit and Control Unit) processes this data as per instructions, using the Memory unit to hold data and intermediate results during processing; finally, the Output unit (e.g., monitor, printer) presents the processed result to the user.
45

Convert: 6 PB = ______ TB.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 6 PB = 6 x 1024 TB = 6144 TB.
46

Which pattern matches first names having exactly 6 characters and starting with 'S'?

MCQ Hard
a. S%
b. S______
c. S_____
d. %S%
Information Technology (802) · Class 12 · Sep 26, 2026
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S_____
Explanation: 'S' followed by exactly five underscores (5 more characters) matches a 6-character name starting with 'S' — 'S_____' (S + 5 underscores = 6 chars total).
47

Evaluate the Java logical expression: (4 == 4) && (5 != 5)

MCQ Medium
a. TRUE
b. FALSE
Information Technology (802) · Class 12 · Sep 26, 2026
Show answer
FALSE
Explanation: Using && (both true), || (either true), and ! (negation) rules, (4 == 4) && (5 != 5) evaluates to false.
48

Differentiate between RAM and ROM.

LONG Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: RAM (Random Access Memory) is volatile primary memory that loses its contents when power is switched off; it is used to hold the currently running programs/data and can be read from and written to. ROM (Read Only Memory) is non-volatile memory used mainly for startup operations; its contents are generally not altered during normal operation. Variants of ROM include PROM, EPROM, and EEPROM.
49

Convert: 7 PB = ______ TB.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 7 PB = 7 x 1024 TB = 7168 TB.
50

Which clause is used to sort the result of a SELECT query?

MCQ Easy
a. GROUP BY
b. ORDER BY
c. SORT BY
d. HAVING
Information Technology (802) · Class 12 · Sep 26, 2026
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ORDER BY
Explanation: ORDER BY <attribute(s)> sorts the result; ascending (ASC) by default, or descending with DESC.
51

Evaluate the Java logical expression: (4 == 4) || (5 != 5)

MCQ Medium
a. TRUE
b. FALSE
Information Technology (802) · Class 12 · Sep 26, 2026
Show answer
TRUE
Explanation: Using && (both true), || (either true), and ! (negation) rules, (4 == 4) || (5 != 5) evaluates to true.
52

Differentiate between DRAM and SRAM.

LONG Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: DRAM (Dynamic RAM) is used in main memory, is inexpensive, uses less power, and is slower than SRAM. SRAM (Static RAM) is used in cache memory, is expensive, uses more power, but is faster than DRAM.
53

Convert: 2048 Bytes = ______ KB.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Explanation: 2048 Bytes = 2048 / 1024 KB = 2 KB.
54

Which keywords are used to test for NULL values in SQL?

MCQ Medium
a. = NULL and != NULL
b. IS NULL and IS NOT NULL
c. EQUALS NULL
d. HAS NULL
Information Technology (802) · Class 12 · Sep 26, 2026
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IS NULL and IS NOT NULL
Explanation: IS NULL and IS NOT NULL are used to test whether a column's value is NULL, since = NULL is not valid in SQL.
55

How many times does the loop body execute? for(int count=1; count<=5; count++)

MCQ Medium
a. 5
b. 6
c. 4
d. 7
Information Technology (802) · Class 12 · Sep 26, 2026
Show answer
5
Explanation: The loop runs from count=1 while count<=5, stepping by 1 each time, giving 5 iterations.
56

Which component holds together the CPU, memory, and expansion cards, and provides connectors like USB ports?

MCQ Easy
a. Hard Disk
b. Motherboard
c. Power Supply Unit
d. CPU Cabinet
Information Technology (802) · Class 11 · Sep 26, 2026
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Motherboard
Explanation: The motherboard is the main circuit board that connects all components of the computer.
57

Convert: 3072 Bytes = ______ KB.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 3072 Bytes = 3072 / 1024 KB = 3 KB.
58

A query written inside another query's WHERE clause is called a:

MCQ Medium
a. Join query
b. Nested query (subquery)
c. Aggregate query
d. Cartesian query
Information Technology (802) · Class 12 · Sep 26, 2026
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Nested query (subquery)
Explanation: A nested query (or subquery) is a query within another query; the outer query uses the result of the inner query.
59

How many times does the loop body execute? for(int count=1; count<10; count++)

MCQ Medium
a. 9
b. 10
c. 8
d. 11
Information Technology (802) · Class 12 · Sep 26, 2026
Show answer
9
Explanation: The loop runs from count=1 while count<10, stepping by 1 each time, giving 9 iterations.
60

Which of these is an OUTPUT device?

MCQ Easy
a. Scanner
b. Microphone
c. Plotter
d. Webcam
Information Technology (802) · Class 11 · Sep 26, 2026
Show answer
Plotter
Explanation: A plotter is a large printer-like output device used for maps and architectural designs; the others are input devices.