CBSE Class 12 Informatics Practices Question Paper Delhi with answers 2017 (1)

CBSE Class 12 Informatics Practices Question Paper Delhi with answers 2017 (1). Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examination

INFORMATICS PRACTICES

1. (a) How do Computer networks reduce hardware costs of an organization ? Explain with the help of example. 

(b) Compare BUS topology with STAR topology. Give example. 

(c) (i) Why is a switch called an intelligent hub ? 

(ii) When is a repeater used in a computer network ?

(d) Expand following term : 

(i) OSS

(ii) HTTP

(e) Explain the term Firewall and Cyber Law. 

 2. (a) Write the value that will be assigned to variable C after executing the following statement :

 C = 25–5*4/2–10+4;

(b) Consider the statement : 

 first_name = “Ayana”;

(i) What is the datatype of first_name ?

(ii) Is 325 the same as “321” ? Give reason.

(c) Radhika changed the “Text” property of a Checkbox named jCheckBox1 to “Reading”. What change (if any) will be reflected in its name property ? 

(d) Ariya has typed the following comments. Write the comments using another way. 

  //This is a comment spreading

  //over two lines

(e) Given below is HTML code. Rewrite the correct code underlining all the corrections done. 2

<o1 type = “A” start=“D”>

<li>Bake in oven for an hour

<li>Remove from oven

<li>Serve

(f) Explain the meaning of the following statement with the help of example. 

  “Tags are not predefined in XML”

(g) Name two properties and two methods that are common in jTextField and jLabel.

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