1. INFS 277 Network and Communications BOUNEDYEN SHANNAQ Room: 11G-3 Phone:

2. Lectures
• SATERDAY in 6A
• Wednesday in 6A

3. Objectives • To understand the basic principles of data
communications and computer networks.
• To appreciate the complex trade-offs that
are inherent in the design of networks.
• To provide a guided tour of network
technologies from the lowest levels of data
transmission up to network applications.
• To learn about current networking
technologies, especially Internet protocols.

4. About This Course
This course will guide you through the fundamentals of current networking technology. As an interactive self-study, these slides is designed to meet three primary goal:
1-To serve as a general introduction to the full range of computer networking, from local-area network to wide-area network technology.
2-To prepare Microsoft Certified Professional (MCP) program candidates to successfully complete the MCSE Networking Essentials examination.
3-To prepare CompTIA certification candidates to successfully complete the CompTIA Network+ examination.

5. Intended Audience
This course was developed for information system (IS) professionals who need to design, plan, implement, and support computer networks or who plan to take the related Microsoft Certified Professional exam ,
The course is intended to reach a broad audience, encompassing readers who are relatively new to networking as well as more experienced computer professionals.

6. Features of These slides
Each chapter opens with a section titled "Before You Begin" that prepares you for completing the chapter.
At the beginning of each lesson, you will find an estimate of how long it will take to complete that lesson. While actual times will vary with students, these estimates can give you a general idea of how much time you'll need to set aside for completion of the lesson at hand. .

7. Features of These slides
In each lesson, procedures, exercises, and lesson review questions are included to give you an opportunity to apply the knowledge and skills being presented.
At the end of each lesson, the "Lesson Summary" section reviews the concepts covered in that lesson. At the end of each slide, the "Chapter Review" section allows you to test what you have learned in the entire chapter.

8. Appendix
"Questions and Answers," contains each review and exercise question for every chapter,
Students should answers these questions
And test there's answers through there's instructor.
The Glossary defines key computer-networking and relevant scientific terms used in the book

9. Chapter and Appendix Overview
This course combines notes, hands-on procedures, multimedia presentations, and review questions to teach you the essentials of computer networking.
The course is designed to be completed in sequence, from beginning to end,

10. Chapter and Appendix Overview
The book is divided into the following parts and chapters:
Note:
Ask you're instructor about these information
You can find this information in word doc. format

11. important The Microsoft Certified Professional Program
The Network+ Certification Program
Note:
For more information About these programs ask you instructor

12. Part I
Networking Fundamentals
In Part I, this course introduce the basic concepts and principles that underlie computer networking, from the simplest peer-to-peer local area networks to the vastly complex wide area networks that reach across international boundaries and around the world. This course present an overview of networking terminology, examine different network topologies and architectures, and focus on the physical components of computer networks, including server and client computers, and cabling and connectors.

13. Networking Fundamentals
This course also investigate what occurs within computers when they are linked and how they send and receive messages, including the standards and protocols that govern network communication.
Part I concludes with an examination of network connectivity beginning with old-fashioned analog telephone lines and extending to the newest forms of digital and remote-access communication.

14. Chapter 1 Introduction to Networking
About This Chapter
Welcome to the world of computer networking. As you begin your study, it is important that you understand some of the fundamental concepts upon which computer networks are built. This chapter introduces you to these concepts.
Before You Begin
This course assumes that you are just beginning your study of computer networking; therefore, there are prerequisites (introduction to computers science “comp 210”).
A general familiarity with computers and computing is helpful.

15. Lesson 1: What Is a Network
This lesson introduces some basic principles of computer-based networking, discusses advantages of networking, and presents the idea of connecting computers together to form a local area network (such as a corporate intranet) and a wide area network (such as the Internet)

16. After this lesson, you will be able to
Define a computer network.
Discuss advantages of using a network.
Describe a local area network (LAN) and a wide area network (WAN(
Identify the primary difference between a LAN and a WAN.
Estimated lesson time: 20 minutes

17. The Concept of Networking
A system in which a number of independent computers are linked together to share data and peripherals, such as hard disks and printers
Sharing
a computer network consists of two computers connected to each other by a cable that allows them to share data .

18. Student notes

19. Stand-alone environment
The sneakernet

20. Network
This connecting together of computers and other devices is called a
connected computers sharing resources is called

21. Why Use a Computer Network?
networks increase efficiency and reduce costs .
Sharing information (or data)
Sharing hardware and software
Centralizing administration and support
computers that are part of a network can share:

22. Sharing information (or data)
reduce the need for paper communication, increase efficiency

23. Sharing hardware and software
A printer in a stand-alone environment

24. Sharing hardware and software
Sharing a printer in a networking environment

25. Centralizing Administration and Support
more efficient for technical personnel to support one version of one operating system

26. The Two Major Types of Networks: LANs and WANs
a limited geographic area.

27. and WANs
no geographical limit

28. Lesson Summary
The following points summarize the main elements of this lesson:
The primary reasons for networking computers are to share information, to share hardware and software, and to centralize administration and support.
A local area network (LAN) is the smallest form of a network and is the building block for larger networks.
A wide area network (WAN) is a collection of LANs and has no geographical limitation.

29. Lesson Checkup What is a computer network?
What are three advantages of using a computer network?
Give two examples of a LAN configuration.
Give two examples of a WAN configuration

30. What is a computer network?
A computer network is a system in which a number of independent computers are linked together to share data and peripherals, such as hard disks and printers.
What are three advantages of using a computer network?
Three advantages of using a computer network are the ability to share information (or data), to share hardware and software, and to centralize administration and support.
Give two examples of a LAN configuration.
The most basic version of a LAN is two computers that are connected by a cable. An example of a more complex LAN is hundreds of connected computers and peripherals scattered throughout a large organization, such as a municipality. In both cases, the LAN is confined to a limited geographic area.
Give two examples of a WAN configuration.
Because a WAN has no geographical limitations, it can connect computers and other devices in separate cities or on opposite sides of the world. A multinational corporation with linked computers in different countries is using a WAN. Probably the ultimate WAN is the Internet.