CBSE Class 12 Informatics Practices Sample Paper 2017 (4)

Scroll down for PDF

CBSE Class 12 Informatics Practices Sample Paper 2017 (4). It’s always recommended to practice as many sample papers as possible before the examinations. Students can download the sample papers and also question papers of previous years to practice and score better marks in examinations. Refer to other links too for more sample papers. 

1.(a)Vidya College has three departments that are to be connected into a network. Which of the following communication medium (out of the given options), should be used by the college for connecting their departments for very effective High Speed communication?

• Coaxial Cable

• Optical Fiber

• Ethernet Cable

Also name the type of network (out of PAN/LAN/WAN) formed.

(b) State reason why Star topology requires more cable length than Bus topology.

(c) Seema needs a network device that should regenerate the signal over the same network before the signal becomes too weak or corrupted.

Amit needs a network device to connect two different networks together that work upon different networking models so that the two networks can communicate properly.

Name the devices that should be used by Seema and Amit.

(d) How is a domain name related to an IP address? 2

(e) How is firewall useful in ensuring network security? 2

2. (a) Identify the odd one out of the following Java statements. State reason for your choice.

(i) for

(ii) do while

(iii) switch

(iv) while

(b) Write the purpose of parseint() method. 1

(c) Identify invalid variable names out of the following. State reason if invalid.

(i) for

(ii) - salary (iii) salary12 (iv) product

(d) What is the difference between statements (i) and (ii)? 1

(i) t = 2;

(ii) if (t = =2 )

d = 3; 

(e) Write HTML tags to do the following : 2

(i) Inserting a horizontal line in a web page.

(ii) Inserting a line break

(f) What does 'XML' stand for ? How is the purpose of HTML different from XML?

(g) Rewrite the following code using if else if statement : 2

switch(depcode)

{

case 1.

allowance = 4000;

break;

case 2

allowance = 3200;

break;

default

allowance = 1000;

}

3. (a) What is the meaning of 'Open Source' in the term 'Open Source Database  Management System' ?

(b) In a table 'Employee', a column 'Occupation' contains many duplicate 1 values. Which keyword would you use if you wish to list only different values?

(c) How is ALTER TABLE statement different from UPDATE statement? 1

(d) Charvi wants to delete the records where the "FirstName" is "Rama" in the 'Emp' Table. She has entered the following SQL statement. An error is being displayed. Rewrite the correct statement.

DELETE 'Rama' FirstName FROM Emp; 

Please click the link below to download CBSE Class 12 Informatics Practices Sample Paper 2017 (4).

Tags: 


Click on the text For more study material for Informatics Practices please click here - Informatics Practices

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

CBSE Board Secretary says Class 10 and 12 CBSE Exam Pattern to be modified

The Central Board of Secondary Education is expected to introduce a few changes to the exam pattern for class 10 and board exams by 2023. Anurag Tripathi, secretary of CBSE speaking at an Assoham School Education Summit said that although this year class 10 students...

JEE in Punjabi too after English, Hindi and Gujarati

Punjab Minister Tript Rajinder Singh Bajwa requested the joint technology entrance exam (main) to be conducted in Punjabi and other regional languages too. In his letter to Union HRD Minister Ramesh Pokhriyal Nishank, the Punjab Minister for Higher Education and...

CBSE Circular Aryabhatta Ganit Challenge

For students with a keen interest in mathematics are now provided with a better opportunity to explore their knowledge. CBSE has announced to conduct an exam for the purpose of generating interest in maths among students. It is a trial to clarify the myth that...

Extension of dates by CBSE for Single Girl Child Merit (SGC) scholarship

CBSE has announced to extend dates for SGC scholarship. Previously the dates to submit the SGC scholarship form were 18 October 2019. Now dates have shifted. For online submission, the last date is 31st October. Whereas date for submission of hard copies of renewal...

Tips for exam preparation

Students often get nervous during their exams. The reason behind this nervousness is either a lack of confidence or a lack of preparedness. To overcome these fears students are advised to do their preparation in such a way that will retain their confidence. For this...

×
Studies Today