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Class 11

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61

Convert: 40 bits = ______ Bytes.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 40 bits / 8 = 5 Bytes.
62

A multi-tasking operating system can execute more than one program simultaneously.

TRUE FALSE Easy
a. TRUE
b. FALSE
Information Technology (802) · Class 11 · Sep 26, 2026
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TRUE
Explanation: Multi-tasking OS divides processor time among various processes to run multiple programs.
63

Convert: 6 Nibbles = ______ bits.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 6 Nibbles = 6 x 4 bits = 24 bits.
64

In a batch processing system, jobs require heavy user intervention during execution.

TRUE FALSE Medium
a. TRUE
b. FALSE
Information Technology (802) · Class 11 · Sep 26, 2026
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FALSE
Explanation: In batch processing, similar jobs are grouped and executed with minimal user intervention.
65

Convert: 1 Byte = ______ Nibbles.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: 1 Byte = 8 bits = 2 Nibbles (since 1 Nibble = 4 bits).
66

What is an Operating System?

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: An Operating System is software that acts as an interface between the user and the computer hardware, managing resources and coordinating the components of a computer.
67

Write an SQL query to display fname and marks of students where marks greater than 85.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks > 85;
68

Name the two main types of file systems mentioned in the chapter.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: FAT (File Allocation Table, e.g., FAT16/FAT32) and NTFS (New Technology File System).
69

Write an SQL query to display fname and marks of students where marks less than 40.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks < 40;
70

List the various functions of an Operating System and briefly explain any two.

LONG Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: Functions: Communication Manager, Resource Management, Process Management, File Management, and Memory Management. Process Management: the OS manages, controls and schedules all processes in memory or waiting for the CPU, deciding which process gets the processor and for how long. Memory Management: the OS allocates working memory (RAM) to processes dynamically — on demand and released when not needed.
71

Write an SQL query to display fname and marks of students where marks greater than or equal to 90.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks >= 90;
72

Differentiate between Single-tasking and Multi-tasking operating systems, and between Single-user and Multi-user operating systems.

LONG Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: Single-tasking OS allows execution of only one program at a time, while Multi-tasking OS can execute multiple programs simultaneously by dividing processor time among processes. Single-user OS allows only one user to use the system (e.g., typical desktop systems), while Multi-user OS allows many users to access the system by maintaining accounts of all registered users.
73

Write an SQL query to display fname and marks of students where marks less than or equal to 33.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks <= 33;
74

Which key is generally used to access the Help window while troubleshooting?

MCQ Easy
a. F1
b. F2
c. F5
d. F12
Information Technology (802) · Class 11 · Sep 26, 2026
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F1
Explanation: Pressing F1 accesses the Help window, which may help find a solution to a problem.
75

Write an SQL query to display fname and marks of students where marks equal to 100.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks = 100;
76

Which keyboard combination is used to forcefully open the Windows Task Manager to end an unresponsive application?

MCQ Easy
a. Ctrl+Alt+Delete
b. Ctrl+Shift+Esc only
c. Alt+F4
d. Ctrl+C
Information Technology (802) · Class 11 · Sep 26, 2026
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Ctrl+Alt+Delete
Explanation: Pressing and holding Ctrl+Alt+Delete opens the Windows Task Manager to forcefully end a non-responding application.
77

Write an SQL query to display fname and marks of students where marks not equal to 0.

SHORT Medium
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks <> 0;
78

What is the recommended minimum free hard drive space to maintain good system performance?

MCQ Medium
a. 10-20 MB
b. 50-100 MB
c. 200-500 MB
d. 1-2 GB
Information Technology (802) · Class 11 · Sep 26, 2026
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200-500 MB
Explanation: There should be at least 200-500 MB of free hard drive space for smooth functioning of the computer.
79

Write an SQL query to display fname and marks of students where marks between 60 and 80.

SHORT Easy
Information Technology (802) · Class 11 · Sep 26, 2026
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Explanation: SELECT fname, marks FROM STUDENT WHERE marks BETWEEN 60 AND 80;
80

Which of these is NOT a function of Utility software?

MCQ Medium
a. Improving system performance
b. Providing virus protection
c. Compiling source code into machine code
d. Managing disk space
Information Technology (802) · Class 11 · Sep 26, 2026
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Compiling source code into machine code
Explanation: Utilities improve performance, provide security, manage disk space and backups; compiling code is the job of a compiler/translator, not a utility.