Computer Networks (CN) Computer Science - Computer Networks (CN)

India got its IT act in 1947.

Plagiarism is always illegal and punishable by law

A license allows the user to use copyright material.

Mac address is 32 bit long.

Ping is used to determine the data transfer rate.

Which of the following will come under cybercrime:

Mr. Gupta is confused in normal crime and cyber crime. Please help him to identify cyber crime among the situation given below.

Which of the following will be come under cyber crime?

Name anti-virus program?

Gaining someone else’s identity, without his/her knowledge and misuse it.

A fraudulent scheme performed by a dishonest individual, group, or company in an attempt to obtain money or something else of value on the internet is known as ______.

The rights given to the person(s) over the creation of their minds or works. The creator has the rights over to use of this work is known as _____________________.

________________ is the copying someone else’s idea or work and pretending that you thought of it or created it.

VIRUS stands for ___________________________________________.

Full form of ITA-2000 is _______________________.

Name common intellectual property rights

Mention the year in which India got its IT Act.

Write one advantage and one disadvantage of using Optical fibre cable.

Identify the following devices:

(a) A device that is used to connect different types of networks. It performs the necessary translation so that the connected networks can communicates properly.

(b) A device that converts data from digital bit stream into an analog signal and vice versa.

What is the use of Repeater in a Network?

What is a spam mail?   

Illustrate the layout for connecting 5 computers in a Bus and a Star topology of Networks.

Write any two important characteristics of Cloud Computing. 

Which type of network (out of LAN, PAN, MAN) is formed when you connect two mobiles using Bluetooth to transfer a picture file? 

Expand the following: GPRS, CDMA  

Write two advantages of 3G over 2G Mobile Telecommunication Technologies in terms of speed and services. 

Which protocol helps us to transfer files to and from a remote computer? 

What is the role of the computer in cybercrime?

What do you mean by authorisation and authentication?

Define plagiarism.

Search Engines allow us to filter the tons of information available on the internet and get the most accurate results. And while most people don’t pay too much attention to search engines, they immensely contribute to the accuracy of results and the experience you enjoy while scouring through the internet.

(a) Search engines are:

(i)Software systems that are designed to search for information on the world wide web

(ii)Used to search documents.

(iii)Used to search videos.

(iv)All of the above

(b) We get a list of sites after typing a word in search bar called:

(i)Single word(ii)Key phrase

(iii)Site(iv)All of the above

(c) The search results are shown in a line of results. This is called:

(i)Search engine pages

(ii)Categories

(iii)Search engine result pages

(iv)Tag list

(d) Search engines are able to search _____ type of information.

(i)Videos(ii)Images

(iii)Documents(iv)All of the above

(e) Web search engines store information about web pages with the help of:

(i)Web router(ii)Web crawler

(iii)Web indexer(iv)Web organizer

In 1989, Tim Berners Lee, a researcher, proposed the idea of World Wide Web). Tim Berners Lee and his team are credited with inventing Hyper Text Transfer Protocol (HTTP), HTML and the technology for a web server and a web browser. Using hyperlinks embedded in hypertext the web developers were able to connect web pages. They could design attractive webpages containing text, sound and graphics. This change witnessed a massive expansion of the Internet in the 1990s.

(i)Programming language

(ii)Web server

(iii)Web page

(iv)Browser

(b) What is a web browser?

(i)A program that can display a webpage

(ii)A program used to view HTML documents.

(iii)It enables a user to access the resources of internet.

(iv)All of the above

(c) Dynamic web page _____

(i)is same every time whenever it displays.

(ii)generates on demand by a program or a request from browser.

(iii)both is same every time whenever it displays and generates on demand by a program or a request from browser.

(iv)is different always in a predefined order.

(d) URL stands for _______

(i)unique reference label

(ii)uniform reference label

(iii)uniform resource locator

(iv)unique resource locator

(e) A web cookie is a small piece of data that is _____

(i)sent from a website and stored in user’s web browser while a user is browsing a website

(ii)sent from user and stored in the server while a user is browsing a website

(iii)sent from root server to all servers.

(iv)sent from the root server to another root servers.

An email is a service of sending or receiving emails or messages in the form of text, audio, video, etc over the internet. Various service providers are providing email services to users. The most popular service providers in India are Gmail, Yahoo, Hotmail, Rediff, etc.

(a) The first email service was:

(i)Gmail(ii)Rediff

(iii)Hotmail(iv)Yahoo

(b) Unsolicited e-mail advertising is known as _______

(i)newsgroup

(ii)junk ads

(iii)spam

(iv)none of the above

(c) Which of the following is the correct format of email address?

(i)name@website@info

(ii)name@websiteinfo

(iii)www.nameofwebsitecom

(iv)namewebsitecom

(d) Mail access starts with client when user needs to download e-mail from the______

(i)mail box(ii)mail server

(iii)IP server(iv)internet

(e) When sender and receiver of an email are on same system, we need only two_____

(i)IP (ii)domain

(iii)servers(iv)user agents

Web Server is an uncommon PC framework running on HTTP through website pages. The page is a medium to convey information starting with one PC framework then onto the next. The working of the webserver begins from the customer or client. The client sends their request through the web browser to the webserver. Web server takes this request, processes it, and then sends back processed data to the client. The server gathers all of our web page information and sends it to the user, which we see on our Computer System n the form of a web pag(e) When the client sends a request for processing to the web server, a domain name and IP address are important to the webserver. The domain name and IP address are used to identify the user on a large network.

(i)URL (ii) Hyperlink(iii)Plugin(iv)Extension

(b) Web servers are:

(i)IP addresses

(ii)Computer systems

(iii)Webpages of a site

(iv)A medium to carry data from one computer to another.

(c) The _______ translates internet domain and host names to IP address.

(i)Domain name system

(ii)Routing information protocol

(iii)Google

(iv)Networktime protocol

(d) What does the webserver need to send back information to the user?

(i)Home address

(ii) Domain name

(iii)IP address

(iv)Both (ii) and (iii)

(e) What is the full form of HTTP?

(i)Hypertext Transfer Protocol

(ii)Hypertext Transfer Procedure

(iii)Hyperlink Transfer Protocol

(iv)Hyperlink Transfer Procedure

Oberoi Industries 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:

Center to center distances between various blocks :

Block 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 m
Block B to Block D	125 ill
Block A to Block C	90 m

Number of Computer:

Block A	25
Block B	50
Block C	125
Block D	10

(a) Suggest the device which is used to connect all the nodes in particular block.

(i) Repeater (ii) Gateway

(iii) Bridge (iv) Switch

(b) Suggest the most suitable wire to connect all the blocks with high-speed data transfer.

(i) Ethernet Cable (ii) Twisted Pair

(iii) Optical Fibre (iv) Co-axial Cable

(c) 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 way to connect it with reasonably high speed.

(i) Satellite (ii) Radio Wave

(iii) Microwave (iv) Bluetooth

(d) Suggest the appropriate protocol/way to do the audio-video communication between the different parts of the world.

(i) E-Mail (ii) Blog

(iii) Chat (iv) VOIP

(e) What type of network would be formed if the Mangalore office is connected to their New York office?

(i) LAN (ii) PAN

(iii) MAN (iv) WAN

How can one protect from cyber fraud?

Write the different types of plagiarism.

Intelligent Hub India is a knowledge community aimed to uplift the standard of skills and knowledge in the society. It is planning to setup its training centers in multiple towns and villages pan India with its head offices in the nearest cities. They have created a model of their network with a city, a town and 3 villages as follows.

As a network consultant, you have to suggest the best network related solutions for their issues/problems raised in (a) to (d), keeping in mind the distances between various locations and other given parameters.

Shortest distance between various locations:

VILLAGE 1 to YTOWN	2 KM
VILLAGE 2 to YTOWN	1.5 KM
VILLAGE 3 to YTOWN	3 KM
VILLAGE 1 to VILLAGE 2	3.5 KM
VILLAGE 1 to VILLAGE 3	4.5 KM
VILLAGE 2 to VILLAGE 3	3.5 KM
CITY Head Office to YHUB	30 KM

Number of computers installed at various locations are as follows:

YTOWN	100
VILLAGE 1	10
VILLAGE 2	15
VILLAGE 3	15
CITY OFFICE	5

Note:
• In Villages, there are community centers, in which one room has been given as training center to this organization to install computers.

• The organization has got financial support from the government and top IT companies.

(a) Suggest the most appropriate location of the SERVER in the YHUB (out of the 4 locations), to get the best and effective connectivity. Justify your answer.

(b) Suggest the best wired medium and draw the cable layout (location to location) to efficiently connect various locations within the YHUB.

(c) Which hardware device will you suggest to connect all the computers within each location of YHUB?

(d) Which service/protocol will be most helpful to conduct live interactions of Experts from Head Office and people at YHUB locations?

Uplifting Skills Hub India is a knowledge and skill community which has an aim to uplift the standard of knowledge and skills in the society. It is planning to setup its training centers in multiple towns and villages pan India with its head offices in the nearest cities. They have created a model of their network with a city, a town and 3 villages as follows.

As a network consultant, you have to suggest the best network related solutions for their issues/
problems raised in (a) to (d) keeping in mind the distances between various locations and other given parameters.

Shortest distances between various locations:

VILLAGE 1 to B_TOWN	2 KM
VILLAGE 2 to B_TOWN	1.0 KM
VILLAGE 3 to B_TOWN	1.5 KM
VILLAGE 1 to VILLAGE 2	3.5 KM
VILLAGE 1 to VILLAGE 3	4.5 KM
VILLAGE 2 to VILLAGE 3	2.5 KM
A_CITY Head Office to B_HUB	25 KM

Number of Computers installed at various locations are as follows:

B_TOWN	120
VILLAGE 1	15
VILLAGE 2	10
VILLAGE 3	15
A_CITY OFFICE	6

Note:
• In Villages, there are community centers, in which one room has been given as training center to this organization to install computers.

• The organization has got financial support from the government and top IT companies.

(a) Suggest the most appropriate location of the SERVER in the B_HUB (out of the 4 locations), to get the best and effective connectivity. Justify your answer.

(b) Suggest the best wired medium and draw the cable layout (location to location) to efficiently connect various locations within the B_HUB.

(c) Which hardware device will you suggest to connect all the computers within each location of B_HUB?

(d) Which service/protocol will be most helpful to conduct live interactions of Experts from Head Office and people at all locations of B_HUB?

Xcelencia Edu Services Ltd. is an educational organization. It is planning to set up its India campus at Hyderabad with its head office at Delhi. The Hyderabad campus has four main buildings - ADMIN, SCIENCE, BUSINESS and MEDIA.

You as a network expert have to suggest the best network related solutions for their problems raised in (a) to (d), keeping in mind the distances between the buildings and other given parameters.

Shortest Distances between various buildings:

ADMIN to SCIENCE	65 M
ADMIN to BUSINESS	100 m
ADMIN to ARTS	60 M
SCIENCE to BUSINESS	75 M
SCIENCE to ARTS	60 M
BUSINESS to ARTS	50 M
DELHI Head Office to HYDERABAD Campus	1600 KM

Number of Computers installed at various building are as follows:

ADMIN	100
SCIENCE	85
BUSINESS	40
ARTS	12
DELHI Head Office	20

(a) Suggest the most appropriate location of the server inside the HYDERABAD campus (out of the 4 buildings), to get the best connectivity for maximum no. of computers. Justify your answer.

(b) Suggest and draw the cable layout to efficiently connect various buildings ‘within the HYDERABAD campus for connecting the computers.

(c) Which hardware device will you suggest to be procured by the company to be installed to protect and control the internet uses within the campus?

(d) Which of the following will you suggest to establish the online face-to-face communication between the people in the Admin Office of HYDERABAD campus and DELHI Head Office?

(a) E-mail (b) Text Chat (c) Video Conferencing (d) Cable TV