A network connects two or more computers so that they can share information, applications or resources.

1. Networking
Dr. Kamal Gulati

2. What is Networking?
 Definition: A network connects two or
more computers so that they can
share information, applications or
resources.

3. Networking
 Networks are simply a collection of
resources connected by cable or other
media so they can share information
 Networks made sharing data much easier
and more efficient for users.

4. Network: To connect two or more
computers together with the ability
to communicate with each other

5. Examples of Shared Resources
 Printers
 Fax devices
 Files and Folders (Data)
 Modems

6. Example of Services
 Email
 Database
 Internet Access

7. Hardware tools / Network Components
used in connecting system’s for a
Network
 NIC (Network Interface Card) or Ethernet
 HUB (Repeater)
 SWITCH
 Transmission Medium – Cables / Wires,
Connectors.
 ROUTER
 BRIDGE
 MODEM
 GATEWAY
 WIRELESS CARD

8. Network Components
 Server : Powerful machine with a robust
performance and power (e.g. Windows NT, 2000
Server, 2003 Server, Longhorn, Enterprise Linux)
 Client: Uses the server’s services – any machine
running a client software (e.g. Windows 3.11, 95,
98, ME, 2000, XP, Vista, 7, 8 etc ……)
 Peer: Acts as both Client and Server

9. Network Components
 Media: Bounded (UTP, STP or Coax.) or
unbounded( Satellite, Microwave or wireless)
 Resources: anything that client uses
 User: any person using the resources
 Protocols: the rules of communication (TCP/IP,
IPX/SPX,…..)

10. Network Components
Server Client Client Client
Client
Resources

11. Networking
 All systems on the link must follow a set of
common communication rules called
protocols.

12. Networking Models
 Peer-to-Peer
 Server-Based
It is important to remember that one
type of networking configuration is
not necessarily better than another.

13. Peer-to-Peer
 There are no dedicated servers
 All the computers are equals and therefore are
known as peer.
 Each computer functions as both client and server,
 No administrator
 Each user determine what data to share

14. Peer-to-Peer

15. Features of peer-to-peer network
=<Size
=<Cost
=<Operating Systems
=<Implementation
=<Administration
=<Sharing resources
=<Server requirements
=<Security

16. Peer-To-Peer
 Size
 Peer-to-peer is called “workgroup”
 Workgroup: small group of computers
 In peer-to-peer there are 10 or less computers.

17. Peer-To-Peer
 Cost:
 Is simple
 Each computer functions as client and server, so
there is no need to central server
 Less expensive than server-based networks.

18. Peer-To-Peer
 Operating Systems
 No additional software is required to set up a peer-
to-peer network.

19. Peer-to-Peer
 Implementation
 Peer-to-Peer implementation offers the following
advantages:
 Computers are located at users’ desks.
 Users act as their own administrators and plan their
own security.
 Computers in the network are connected by a
simple, easily visible cabling system.

20. Peer-to-Peer
 Where a Peer-to-Peer is appropriate
 There are 10 users or fewer.
 Users share resources, such as files and printers,
but no specialized servers exist.
 Security is not an issue
 The organization and the network will experience
only limited growth within the foreseeable future.

21. Peer-to-Peer
 Administration
 Network administration tasks include:
 Managing users and security
 Making resources available
 Maintaining applications and data
 Installing and upgrading application & operating
system software.

22. Peer-to-Peer
 Sharing resources
 All users can share any of their resources in any manner
they choose.
 Resources include: data, printers, fax cards, and so on.
 Server requirements
 In a peer-to-peer, each computer must:
 Use a large percentage of its resources to support the
users (local user).
 Use additional resources such as hard-disk space and
memory to support user’s accessing resource on the
network (remote user)

23. Peer-to-Peer
 Security: making computers and data safe from harm
and unauthorized access.
 Security consists of setting a password on a resources
such as a folder that is shared on the network.
 All users set their own security
 Shared resources can exist on any computer rather than
on a centralized server only.
 Consequently, centralized control is difficult to maintain.
 Low security because some users may not implement
any security measures at all.

24. Peer-to-Peer
 Training
 Users need training before they are able to function
properly as both users & administrators of their
computers.

25. Peer-to-Peer
 Inexpensive
 Easy to set-up
 Used for small offices
 Reasonable number of users is 10
 Easy to maintain

26. Server-Based Networks
 In a environment with more than 10 users, a peer-to-peer will
properly not be adequate.
 Therefore, most networks have dedicated servers.
 Dedicated server: is one that functions only as server and is
not used as client or workstation
 Server: A powerful computer sometimes with a huge
processing power
 There are different types (e.g. file, print server, application,
mail, proxy, DHCP and DNS servers)
 The heart of the network, if it goes down, network will loose a
lot!

27. Server-Based Network
Server Client Client Client
Client
Resources

28. Specialized Servers
 As network increase in size, more than one server is
usually needed.
 File & Print Servers
 Manage user access and use of file and printers
resources.

29. Specialized Servers.
 Application servers
 Server store vast amount of data that is organized to
make it easy to retrieve.
 Application server differ from file and print server.
 With file & print server: the data or file is downloaded
to the computer making the request.

30. Specialized Servers
 Mail Servers
 Operate like application servers in that there
are separate server and client applications,
with data selectively downloaded from the
server to the client. (E.g. MS Exchange)

31. Specialized Servers
 Fax server
 Manage fax traffic into and out of the network by
sharing one or more fax modem boards.
 Communications servers
 Handle data flow and email messages between the
servers’ own networks and other networks, or
remote users.

32. Specialized Servers
 Directory service Servers
 Enable users to locate, store, and secure
information on the network.
 For example: some server software combines
computers into logical grouping called domains.

33. Server-Based Network
 Most of the mentioned functionality can be
found on one platform (e.g. Windows 2000 /
2003 Server has the following:
 DHCP and DNS servers
 Proxy server (IIS 5.0)
 File Server
 Printer Server
 For mail server, you should get MS
Exchange

34. The Role of software in Server-
based Networks
 A network server and its operating system work
together as a unit.
 No matter how powerful or advanced a server might be,
it is useless without an operating system
 Operating system takes advantages of its physical
resources
 Examples of server operating system: Microsoft and
Novell.

35. Server-Based (Advantages(
Centralized security policies can be imposed
East to back-up data
Centralized administration (Network
Administrator(
Better Performance
More secure
Synchronized Files

36. Server-Based (Disadvantages(
Dependent on the network administrator
Sometimes expensive server

37. Dr. Kamal Gulati
Associate Professor |
University Quality Support Head |
Mentoring Programme Coordinator
]Ph. D., M.Sc. (Computer Science), M.C.A., M.B.A[
Professional Certifications:
Certified Microsoft Innovative Educator
Data Science 101 Certification from Big Data University
R Language 101 Certification from Big Data University
SQL Certification from SOLOLEARN.com
Certified IBM Big Data 101 from Big Data University
R Program & Python Certified from DataCamp
Wiley Certified Big Data Analyst ]WCBDA[
Certification on DBMS from IIT Mumbai
Certified Cisco Certified Network Associate ]CCNA[
Certified Microsoft Certified Professional ]MCP[
Certified Brainbench in Computer Fundamentals, Microsoft Access, MySQL 5.7 Administration &
Microsoft Project

38. •Worked as Visiting Professor with Stratford University, USA for six months
from Jan’2016 to June’2016.
•Also worked at Bahrain University in Kingdom of Bahrain Sr. I.T. Faculty
(Computer Science Department) for Period of 2 Years.
•Have rich experience in the field of teaching and research in Computer
Science and Information Technology for almost 15+ years in Academia.
•Having experience of working with both private and public institutions and
universities as the lecturer and self-instruction material writer for Information
Technology courses.
•Had number of research papers published in national and international journals
and conference proceedings in IEEE and Scopus Index.
•Also chaired various National and International Conferences of repute and
associated with various International Journals as Editorial Board Member for
International and National, Academic Adviser and Research Paper Reviewer.
My current area of interest: Big Data Analytics, R Software, Management
Information System, IT Project Management, Decision Support System,
Business Analytics, Database Management System, Data Networking and
Advanced Excel with Visual Basic Macros.
Country Visited: USA, Canada, UK, UAE, Bahrain, Oman (Mostly for Teaching
and Research Purpose)
Profile of Dr. Kamal Gulati

39. Technical Program Committee for International Conference on Data, Engineering and
Applications 2017 (IDEA-2k17) which would be on October 28-29, 2017 at Bhopal.
http://www.ideaconference.in
Advisory Board Committee Member for International Conference on Energy, Communication,
Data Analytics and Soft Computing (ICECDS) which would be on 1-2 August 2017 at SKR
Engineering College, Poonamallee, Tamil Nadu, India.http://ecds.org.in
Advisory Committee Member for International Conference on Innovative Research in
Engineering and Science which would be on 16-17 June 2017 at Asian Institute of Technology
Conference Center Thailand.http://www.iresconf.org
Advisory Committee Member for International Conference on Cloud Computing and Internet of
everything which held on 10-11 Feb’2016 at Delhi-NCR.http://www.ccioet.org
Technical Committee member for InCITe-2016 (International Conference on Information
Technology) Theme - Internet of Things: Connect Your Worlds, IT Summit, Amity University
2016 which held on 06-07 Oct, 2016. http://www.amity.edu/incite2016
Technical Speaker for Global perspective on IT business “The Changing Scenario” – Big Data
on International Students Conference New Delhi (ISCND) which held on 14-15 Oct, 2016
http://iscnd.com
Advisory Committee Member for International Conference on Sustainable Computing
Techniques in Engineering, Science and Management which has held on 09-10 Sep’2016 at
Delhi-NCR. http://www.scesm.org
Technical Program Committee Member for Program Committee Member for International
Conference on Recent Trends IN ICT, Jaipur, India, Aug 18-19, 2017 http://rtict.org
Program Committee Member for International Conference on Recent Advancement in Computer
and Communication Bhopal, India, (IC-RAC-2017) May 26-27, 2017 http://www.icrac.co.in
Profile Contd….

40. Editorial Board member for the following International Journals:
International Journal of Computer Science and Innovation
http://www.infinitysciences.org
International Journal of Latest Research in Engineering and
Technology http://www.ijlret.com
International Journal of Latest Trends in Engineering and Technology
http://www.ijltet.org
InternationalJournalofApplicationorInnovationinEngineering
&Management http://www.ijaiem.org
International Journal for Management http://www.ijm-apm.com
ITM International Journal of Innovations in Science, Engineering &
Management www.iijisem.org
The International Journal of Emerging Engineering and Embedded
Systems http://www.ijeees.org
Conference Info http://conferenceinfo.org/tpc.php
International Journal of Computer Engineering in Research Trends
(IJCERT) http://www.ijcert.org

Expert Speaker for Program “Insurance Beyond Doubt” Presented by Oriental Insurance Co Ltd.
Profile Contd….

41. BOOK, CHAPTER, and CASE STUDY Published
Published Book on “A Study of Changing Trends in E-CRM of
Indian Insurance Industry” Published by LAP Lambert Academic
Publishing, one of the top researchers and renowned scientists
of Germany with ISBN: 3330009543, 9783330009547. The Book
available at Amazon.com.
Published Real Case Study on “IoT Security Considerations for
Higher Education” published on Business Cases - RENVOI 2017
BOOK (The Case Centre, UK) with ISBN: 978-1-4828-8840-9,
Page 63-70. The Book available at the various online website:
Amazon, AbeBooks, Chegg, Barnes & Noble.
Published Chapter on "Role of eWorld in Insurance Innovation"
Published by Insurance Institute of India (III), 60 Years Diamond
Jubilee, Compendium, Nov 2016 – (Magazine) – One of the
premium Insurance Institute of India.

42. Contact Details
Email : drkamalgulati@gmail.com
Website : http://mybigdataanalytics.in
LinkedIn : https://in.linkedin.com/in/drkamalgulati