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HOLIDAYS HOMEWORK 

CLASS XII

COMPUTER SCIENCE C++ (Session 2011-2012)

C++

Do all the question from list of program up to constructor in a CD or assignment register

Networking

1. Define a network? What is its need?

2. Write four advantages of networks?

3. What is ARPnet ? What is NSFnet ?

4. What do you understand by InterSpace?

5. What are the various types of network?

6. What is meant by topology? Name some popular topologies?

7. Write down the difference between BUS and Ring topology?

8. Write down the difference between Star and Ring topology?

9. Write down the difference between Star and BUS basic types topology?

10.What is a communication channel? Name the basic types of communication channels available.

11.Define baud, bps and BPs. How are these interlinked?

12. Explain function of hub and router.13. What is MODEM ? Name two categories of modems?

14.Define the following : (i) RJ-45 (II) Ethernet (III) Ethernet Card (IV) Switch

15. Expand the following terms

(i) URL (ii) ISP (iii) DHTML (iv) CDMA (V) GNU

16.What are the differences between INFRARED and Laser unguided communication media?

17. Differentiate between message switching and packet switching?

18. Differentiate between circuit switching and packet switching?

19.What is the difference between Wireless and mobile computing?

20. Write two applications of Cyber Law.

21. Explain GSM.

22. Write difference between coaxial and optical cable.

23. Write two advantage and disadvantage of RING topology.

24. Define Open Source Software, Free Software, Freeware, and Shareware.

25. What is the difference between WAN LAN AND MAN?

26. What is the purpose of using FTP?

27. How is a Hacker different from a Cracker?

28.Expand the following terms with respect to Networking

(i)Modem (ii) WLL (iii) TCP/IP (iv) FTP(v)FSF(vi)HTTP

29.What are Protocols? How many types of protocols are there?

30. What is the difference between Repeater and a Bridge?

31. Which media have the ability to communicate over oceans?

32. What is the difference between microwave and radio wave transmission?

33. Which is the special case of microwave relay system?

34. What is bleeding of signal?35. Which communication medium is to be suggested for very effective and fast Communication in

guided medium?

36. In harsh industrial environment which cable would you like to use?

37. Which transmission medium is useful for sparsely populated areas?

38. In which transmission medium Bandwidth allocation is limited?

39. What is baud?

40. Which network is easy to expand?

41. In which network there is no server?

42. In Ethernet card which connection is used for coaxial cable or twisted pair or for both?

43. Which device filters the data and which device can handle different protocol?

44. Which device do not control broadcast, filter traffic and filter collision?

45. Which networking device is used for less no. of nodes or which is for more no. of nodes?

46. What is the difference between Networking and Remote Networking?

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47. What is point-to-point protocol?

48. How gateway is different from router?

49. What is the role of network administrator?

50. What is the difference between baseband and broadband transmission?

51. What are the difference between domain and workgroup?

52. What are the differences between POP3 and IMAP Mail Server?

53. What is client server architecture?

54. What is FDM? Give example.

55. Describe the following in brief: i) MOSAIC ii) USENET iii) WAIS iv)FLOSS

56. What is 80-20 rule of network design?

57.What is firewall?

58. What are cookies?

59. What is web hosting and web scripting?

60. What is the difference between client side and server side scripting? Give two examples of each

scripting?

61. What is the difference between Worms and Spams?

62. What is Trojan Horses and Virus?63. What is 3G?

64. When was IT act enforced in India?

HOTS (HIGHER ORDER THINKING SKILLS)

4 Marks Questions

1. Knowledge Supplement Organization has set up its new centre at Mangalore for its office and web based

activities. It has four building as shown in the diagram below

Centre to Centre distance between various buildings

Alpha to Beta 50m

Beta to gamma 150m

Gamma to Lambda 25m

Alpha to Lambda 170m

Beta to Lambda 125m

Alpha to Gamma 90m

(A) Suggesting a cable layout of connection between building state with justification where Server,

Repeater and hub will be placed.

alpha Gamma

Beta

Lambda

Alpha 25

Beta 50

Gamma 125

Lambda 10

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(B)The organization is planning to link its front office situated in the city in a hilly region where

cable connection is not feasible, suggest an economic way to connect it with reasonably high speed?

2. Software Development Company has set up its new center at Jaipur

for its office and web based activities. It has 4 blocks of buildings as shown in

the diagram below:

Center to center distances between various blocks

Black A to Block B 50 m

Block B to Block C 150 mBlock C to Block D 25 m

Block A to Block D 170 m

Block B to Block D 125 m

Block A to Block C 90 m

Number of Computers

Black A 25

Block B 50

Block C 125Block D 10

e1) Suggest a cable layout of connections between the blocks.

e2) Suggest the most suitable place (i.e. block) to house the server of this

company with a suitable reason.

e3) Suggest the placement of the following devices with justification

(i) Repeater

(ii) Hub/Switch

e4) the company is planning to l ink its front office situated in the

city in a hilly region where cable connection is not feasible, suggest

an economic way to connect it with reasonably high speed?

3. Ram Goods Ltd. has following four buildings in Ahmedabad city.

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Computers in each building are networked but buildings are not networked so

far. The company has now decided to connect building also.

(a) Suggest a cable layout for these buildings.

(b) In each of the buildings, the management wants that each LAN segment gets

a dedicated bandwidth i.e. bandwidth must not be shared. How can this be

achieved?

(c) The company also wants to make available shared Internet access for each of 

the buildings. How can this be achieved?

(d) The company wants to link its head office in GV1 building to its another office in

Japan.

(i) Which type of transmission medium is appropriate for such a link?

(ii) What type of network would this connection result into?

4. Abhivandan Sanskriti in Udaipur is setting up the network between its different

wings. There are 4 wings named as SENIOR(S), MIDDLE(M), JUNIOR(J) and

OFFICE(O).

Distance between the various wings are given below:

No. of Computers

(i) Suggest a suitable Topology for networking the computer ofall wings.

(ii) Name the wing where the server to be installed. Justify your answer.

(iii) Suggest the placement of Hub/Switch in the network.

(iv) Mention an economic technology to provide internet accessibility to all wings.

5. “China Middleton Fashion” is planning to expand their network in India, starting with two cities in India

to provide infrastructure for distribution of their product. The company has planned to set up their main

office units in Chennai at three locations and have named their offices as “Production Unit”, “Finance Unit”and “Media Unit”. The company has its corporate unit in New Delhi. A rough layout of the same is as follows:

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Approximate distances between these Units is as follows:

In continuation of the above, the company experts have planned to install thefollowing number of computers in each of their office units:

i) Suggest the kind of network required (out of LAN,MAN,WAN) for connecting each of the following office units:

  P roduction Unit and Media Unit

  Production Unit and Finance Unit

ii) Which one of the following devices will you suggest for connecting all the computers within each of their office

units?

  Switch/Hub

  Modem

  Telephone

iii) Which of the following communication media, will you suggest to be procured by the company for connectingtheir local offices in Chennai for very effective (High Speed) communication?

  Ethernet cable

  Optical fiber 

  Telephone cable

(iv) Suggest a cable/wiring layout for connecting the company’s local office units located in Chennai. Also, suggest

an effective method/technology for connecting the company’s office unit located in Delhi.

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6. Nootan Vidya Mandir in OOTY is setting up the network between its different wings. There are 4 wings named as

SENIOR(S), MIDDLE(M), JUNIOR(J) and OFFICE(O).

Distance between the various wings are given below:

Wing O to Wing S 100mWing O to Wing M 200m

Wing O to Wing J 400mWing S to Wing M 300m

Wing S to Wing J 100m

Wing J to Wing M 450m

 No. of Computers

Wing O 10

Wing S 200Wing M 100

Wing J 50

(i) Suggest a suitable Topology for networking the computer of all wings.

(ii) Name the wing where the server to be installed. Justify your answer.

(iii) Suggest the placement of Hub/Switch in the network.

(iv) Mention an economic technology to provide internet accessibility to all wings.7. Global Village Enterprises has following four buildings in Hyderabad city. Computers in each building are

networked but buildings are not networked so far. The company has now decided to connect building also.

(a) Suggest a cable layout for these buildings.

(b) In each of the buildings, the management wants that each LAN segment gets a dedicated bandwidth i.e

 bandwidth must not be shared. How can this be achieved?

(c) The company also wants to make available shared Internet access for each of the buildings. How can this be

achieved?

(d) The company wants to link its head office in GV1 building to its another office in Japan.

(i) Which type of transmission medium is appropriate for such a link?

(ii) What type of network would this connection result into?8. Knowledge Supplement Organisation has set up its new center at Mangalore for its office and web based

activities. It has 4 blocks of buildings as shown in the diagram below:

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Center to center distances between various blocks

Black A to Block B 50 m

Block B to Block C 150 m

Block C to Block D 25 m

Block A to Block D 170 mBlock B to Block D 125 m

Block A to Block C 90 m Number of Computers

Black A 25

Block B 50

Block C 125

Block D 10

e1) Suggest a cable layout of connections between the blocks.e2) Suggest the most suitable place (i.e. block) to house the server of this organisation with a suitable reason.

e3) Suggest the placement of the following devices with justification

(i) Repeater 

(ii) Hub/Switch

e4) The organization is planning to link its front office situated in the city in a hilly region where cable connection is

not feasible, suggest an economic way to connect it with reasonably high speed?9. Ravya Industries has set up its new center at Kaka Nagar for its office and web based activities. The company

compound has 4 buildings as shown in the diagram below:Center to center distances between various buildings is as follows:

Harsh Building to Raj Building 50 mRaz Building to Fazz Building 60 m

Fazz Building to Jazz Building 25 m

Jazz Building to Harsh Building 170 m

Harsh Building to Fazz Building 125 mRaj Building to Jazz Building 90 m

 Number of Computers in each of the buildings is follows:

Harsh Building 15

Raj Building 150Fazz Building 15

Jazz Bulding 25

e1) Suggest a cable layout of connections between the buildings.

e2) Suggest the most suitable place (i.e. building) to house the server of 

this organisation with a suitable reason.

e3) Suggest the placement of the following devices with justification:

(i) Internet Connecting Device/Modem

(ii) Switch

e4) The organisation is planning to link its sale counter situated in various parts of the same city, which type of 

network out of LAN, MAN or WAN will be formed? Justify your answer.

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