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Answer» INFORMATICS PRACTICESCLASS XI Time allowed: 3 hours Note: (i) This question paper is divided into 3 sections (ii)Section A consists of 30 Marks. (iii)Section Bconsists of 20 marks. (iv)Section Cconsists of 20 Marks. (iv) Answer the questions after carefully reading the text. SECTION-A Maximum Marks: 70 1. Answer the following questions : a. Define each of the following: (a) Nibble (b) Byte (c) Kilo Byte (d) Giga Byte 2b. State the basic units of the computer. Name the subunits that make up the CPU, and give the function of each of the 2units. c. Differentiate between the compiler and interpreter. 2. d What is a computer virus? How can it affect your computer? 2. e Expand the following terms : 2a) PDAs b) MICR c) DVD d) TFT 2. a. Which Graphical controls of JAVA can used to display multiple choices out of which more than one can be selected? 1b. Suppose you want to scan your storage devices attached with your computer for virus infection . Suggest the type and 1name of the software. c. What is Write Once Run Anywhere characteristics of Java? 2d. How can you declare the variable in JAVA for the following:- 2(i) If you want to store the employee no. of an employee. (ii) If you want to store the name of an employee. e. What is meant by E-learning. Suggest any two websites which can be used for E-learning. 2f. What benefits (mention at least 2) does an e-business offer to an organization? 23. a. Define the following terms in respect of Relationdatabase


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