CBSE Class-12 Exam 2017 : All India Scheme Question Paper, Informatics Practices

Class 12 papers

CBSE Class-12 Exam 2017 : All India Scheme

Question Paper, Informatics Practices

CBSE Class-12 Exam 2017 : Informatics Practices

  • Please check that this question paper contains 9 printed pages.
  • Code number given on the right hand side of the question paper should be written on the title page of the answer-book by the candidate.
  • Please check that this question paper contains 7 questions.
  • Please write down the Serial Number of the question before attempting it.
  • 15 minute time has been allotted to read this question paper. The question paper will be distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the question paper only and will not write any answer on the answer-book during this period.
INFORMATICS PRACTICES
Time allowed : 3 hours,
Maximum Marks : 70
 
Instructions :
 
(i) All questions are compulsory.
(ii) Answer the questions after carefully reading the text.
1. (a) Identify the odd one out of the following : 2
Optical Fiber/Coaxial Cable/Bluetooth/Twisted Pair Cable Give reason for your answer.
(b) How is it easier to diagnose fault in Star topology than in Bus topology ?
(c) What is the purpose of logical address of computer ? 2
(d) Does open source software only mean that the software is free of cost ? Give reason for your answer. 2
(e) Which of the following are valid IP addresses ? Give reason(s) if invalid. 2
(i) 121.23.1.45
(ii) 192.168.0.254
(iii) 192.168.0.1
(iv) 198.-1.1.1
2. (a) Write the value that will be assigned to variable x after executing the following statement : 1
x = 20 – 5 + 3 * 20/5;
(b) Consider the statement :
choice = ‘Y’;
What is the datatype of variable choice ? Write a Java statement to declare the variable ‘choice’. 1
(c) While working in Netbeans IDE, Amit wants that the text in a Text area should move to the next line without breaking the word. Which properties would help him to do that ? 1
(d) Write a Java statement to : 1
Append a string ‘‘ABC’’ to the text that is already in the text area named jTextArea1.

 

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Courtesy: CBSE