CBSE Class-12 Compartment Exam 2019 : Question Paper-Informatics Practices

1. (a) (i) Out of the following Networks, which one is LEAST likely to be a WAN (Wide Area Network) ?  Internet, Branches of a Bank, Network within a School
(ii) Name one Communication Media used in WAN. 2

(b) A College has a network that has to be used by the management only. Explain 2 methods used to ensure that only a few authorized people are allowed access to that network. 2
(c) Name the unique address consisting of a 12-digit hexadecimal notation, assigned to a network card that identifies the Network Card. What are the two main components of this address ? 2
(d) Explain in brief any two freedoms offered by open source software. 2
(e) Write one point of similarity and one point of difference between ASCII and Unicode. 2

2. (a) Distinguish between Java and Netbeans. 1
(b) Identify invalid variable names from the following. State reason(s) if invalid. 1
(i) 1Marks
(ii) Marks1
(iii) for
(iv) _sales

(c) (i) Which property of jList component lets us add items in a ListBox ?
(ii) Sanya has created a List box on her form and has set the selectionMode property to MULTIPLE_INTERVAL. What is the purpose ? 2
OR
(ii) Write one main difference between List box and Combo box.
(d) Name four HTML tags that are needed to form the basic structure for every HTML file. 2
OR
Distinguish between HTML and XML. Write two points

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Courtesy: CBSE