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ISC Class XII Sample / Model Paper 2023 : Computer Science

9 pages, 49 questions, 0 questions with responses, 0 total responses,

Divya SN
Ebenezer International School (EISB), Bangalore

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KARNATAKA ICSE SCHOOLS ASSOCIATION ISC STD. XII Preparatory Examination 2023 SUBJECT: Computer Science Paper I Time: 2.00 p.m. Duration: 3 Hrs. Date: 20.01.2023 Maximum Marks: 70 (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) Answer all questions from Part-I(compulsory) and six questions from Part-II, choosing two questions from Section A, two from Section B and two from Section C. All working including rough work, should be done on the same sheet as the question. The intended marks for questions or parts of questions are given in brackets [ ] PART- I [20 Marks] Attempt all questions While answering the questions in this Part, briefly indicate the working and reasoning, wherever required. Question 1 (i) The dual of the expression, (A+0).(A+1.A ) is (a) (A .0) + (A .1+A) [1] (b) (A.1) + (A.0+A ) (c) (A .1). (A +0+A) (d) (A.0) + (A.1+A ) (ii) Select the Canonical SOP expression for the expression A+BC [1] (a) ABC + ABC + AB C + AB C + A BC (b) A B C + A BC + AB C + AB C + ABC (c) AB + AC + A C + AB + BC (d) ABC + A BC (iii) Which among the following best describes the concept of Inheritance [1] (a) Using the code already written once (b) Using already defined functions in a programming language (c) Copying the code already written (d) Using the data and functions into the derived segment (iv) A java interface can contain [1] (a) public static final variables only (b) public abstract methods (c) Both public static final variables and abstract methods (d) abstract methods (unimplemented) and implemented methods both 1

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