CBSE Class XII Informatics Practices Sample Question Paper

Download Central Board of Secondary Education [CBSE] Class 12th Informatics Practices Sample Question Paper 2023-24 PDF Free Online

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Download CBSE Class XII Informatics Practices Sample Question Paper

CBSE Class XII Informatics Practices Sample Questions

1. A ____________is a device that connects the organisation’s network with the outside world of the Internet.
i. Hub
ii. Modem
iii. Gateway
iv. Repeater

2. When e-waste such as electronic circuit boards are burnt for disposal, the elements contained in them create a harmful chemical called ________which causes skin diseases, allergies and an increased risk of lung cancer.
i. Hydrogen
ii. Beryllium
iii. Chlorine
iv. Oxygen

3. Copyright, Patent and Trademark comes under:
i. Intellectual Property Right
ii. Individual Property Right
iii. Industrial Property Right
iv. International Property Right

4. Predict the output of the following query:
SELECT MOD (9,0);
i. 0
ii. NULL
iii. NaN
iv. 9

5. Which of the following SQL functions does not belong to the Math functions category?
i. POWER()
ii. ROUND()
iii. LENGTH()
iv. MOD()

6. ________ is not a FOSS tool.
i. Libre Office
ii. Mozilla Firefox
iii. Google Chrome
iv. Python

7. CSV stands for:
i. Column Separated Value
ii. Class Separated Value
iii. Comma Separated Value
iv. Comma Segregated Value

8. Raj, a Database Administrator, needs to display the average pay of workers from those departments which have more than five employees. He is experiencing a problem while running the following query: SELECT DEPT, AVG(SAL) FROM EMP WHERE COUNT(*) > 5 GROUP BY DEPT; Which of the following is a correct query to perform the given task?
i. SELECT DEPT, AVG(SAL) FROM EMP WHERE COUNT(*) > 5 GROUP BY DEPT;
ii. SELECT DEPT, AVG(SAL) FROM EMP HAVING COUNT(*) > 5 GROUP BY DEPT;
iii. SELECT DEPT, AVG(SAL) FROM EMP GROUP BY DEPT WHERE COUNT(*) > 5;
iv. SELECT DEPT, AVG(SAL) FROM EMP GROUP BY DEPT HAVING COUNT(*) > 5;

9. Predict the output of the following query:
SELECT LCASE (MONTHNAME (‘2023-03-05’));
i. May
ii. March
iii. may
iv. march

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