Kendriya Vidyalaya Ioc Noonmati

KENDRIYA VIDYALAYA IOC NOONMATI

HOLIDAY HOMEWORK (SUMMER VACATION 2015-16)

CLASS XII SUB: INFORMATICS PRACTICES

Answer the following questions.

a) A School would like to go in for network of all the computers. Which topology would you recommend and why?

b) What is communication channel? What choices do you have while choosing a communication channel for a network?

c) What are the following softwares used for?

(i.)Apache (ii) Mysql (iii) PHP (iv) Python

d) Navneet is using software, which has been downloaded from internet and is available for one month. After one month he has to pay license fee for further use. What kind of software Navneet is using?

e) Akhil is transferring songs from his mobile to his friend’s mobile via Bluetooth connection. Name the network used by Akhil.

f) Which of the following is not a characteristic of open source software?

 Its source code is available for modification  Its owned by a company or an individual  It can be downloaded by Internet g) Which protocol is used for transfer of hyper text documents on the internet?

h) Name the tag which is used to insert image in background of HTML document with example.

I) What are the use of the following tags-

, ,

(a) What is MAC address?

(b) What is repeater?

(e) How is Coaxial cable different from Optical Fibre? (f) Define : (i) ODF (ii) Ogg Vorbis (iii) TTG (iv) OTF

g) What is a markup language? h) What is the different between BASEFONT and FONT tag? 3. (a) Why is switch device used in networking? (b) What is meant by cookies? (c) Expand the following terms: (i) GSM (ii) CDMA (d) Mr. Ravi is a Hindi Teacher. He wants to type a Hindi Question Paper and send it to Exam Department for printing. He wants to use a font which does not depend on any hardware/software platform and gets opened in any computer without any additional software requirements. Which type of font he will use? (e) Explain the difference between MAC address and IP Address. (f) What is Open Source Software? Give 2 examples.

(g) Define the following with reference to network security: (i) DoS (ii) Snooping h) Explain the use of

tag in HTML. i) Explain the use of XML

4 Define front-end and back-end with respect to GUI. Explain the impact of ICT on society. Aaditya works in a software company. He wants to create controls on a form for the following operations: Choose the most appropriate controls out of Text box, Text Area, Label, Radio Button, List box, Combo box, Check box and Command button Serial No. Function 1. To select a City from the available list of Cities. 2. To select Male or female choice of user. 3. To type the address of the user(multiple lines) 4. To submit the form.

. 5 Write SQL Query (i) to (iv) based on the following TABLE: MEDICINE:

TABLE: MEDICINE BATCHNO NAME COMPANY MRP EXPIRYDATE QTY

AFB-2011 CROCIN-TAB SUN PHARMA 11.56 2011-01-31 10

12035RT DCOLD-TAB AVENTIS 8.00 2012-01-31 200

1022 SINAREST SYP PHIZER 34.25 2011-03-31 110

1987 ALFOLX200 TAB SUN PHARMA 11.05 2011-04-31 20

1234 CIPLOX500 TAB AVENTIS 80.00 2014-01-31 35

2546-G LYCOWIN SYP PHIZER 130.00 2012-04-30 100

5684 FLOZENAA TAB SUN PHARMA 36.75 2013-11-30 500

7741L ZIFI50 TAB AVENTIS 29.50 2011-03-31 15

(i). To display the COUNT of those medicines whose name starts with letter 'C'. (ii). To display the Medicine NAME, MRP, QTY and a calculated column TOTAL, where TOTAL=MRP*QTY. (iii). To display the details of all such medicines whose expiry date is less than '2012-11-30'. (iv). To display the details of medicines of 'SUN PHARMA' Company in ascending order of their MRP.

6 (a) Explain the difference between DDL and DML Commands in SQL with examples.

(b) A table STUDENT(ROLLNO, NAME, CLASS, DOB, CITY) contains 10 records. What will be the DEGREE & CARDINALITY of the RESULT of following QUERY:

SELECT ROLLNO, NAME FROM STUDENT;

How is e-learning beneficial to students? Write one point.

Answer: (i) Students can learn at their own pace. (ii) A lesson can be revised any number or times at students’ convenience. (iii) Students can learn lessons at their homes at their convenient time. How has our society benefited from 3-governamce? White two points. Answer: (i) A lot of productive time of government servants and general public is saved. (ii) Transparency has increased and therefore cheating cases have been reduced. Mr. Ranjeet works for the customs department. He wishes to create controls on a form for the following functions. Choose appropriate controls from Text field, Label, Option button, Check box, List box, Combo box, Button and write in the third column. S.No. Control used to control 1 Enter last name 2 Enter gender 3 Choose city from a list of cities 4 Submit from Answer: S.No. Control used to control 1 Enter last name Text field 2 Enter gender Option button 3 Choose city from a list of cities List Box or combo box 4 Submit from Button (Command)

(a) Mr Kamal wants to install a computer in his office which should work like a server as well as a client. Suggest him which type of server he will install.

(b) What is DoS attack ?

(c) Manoj sent one e-mail to his friend, write the name of protocol which is used to specify address on the message packet in internet.

(d) What is the difference between Mesh topology and fully connected topology?

(e) What is the gateway? What are the advantages of gateway over bridge?

(f) Write a short note on : (i) Mozilla (ii) Apache

(g) What do you understand by the ODF? h) Which HTML tag is used for enabling user to enter his name? i) Write code to display combo box in a form of HTML as