apuntes capitulo 1 ccna 1.pdf

8/12/2019 apuntes capitulo 1 ccna 1.pdf

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apuntes capitulo 1

0.0.1 Introduccion

1. Take notes.2. Think about it Stop and ask questions when you are confused. Try to find out more about topics that interest you. Think about how the different parts of the course fit together.3. Practice. We call it e-Doing.4. Practice again, repeated practicing5. Teach it.

Conversations about the course material with fellow students, colleagues, and the instructorcan help solidify your understanding of networking concepts.6. Make changes as you go use de feedback of interactive activities to understand where your strengths and weaknessesare.

1.0.1 Chapter Introduction

In this chapter, you will learn to:Describe how networks impact our daily lives.

Describe the role of data networking in the human network.

Identify the key components of any data network.Identify the opportunities and challenges posed by converged networks.

Describe the characteristics of network architectures: fault tolerance, scalability, quality of serviceand security.

Install and use IRC clients and a Wiki server.1.1.1 networks supporting the way we live

notes

Data networks that were once the transport of information from business to business havebeen repurposed to improve the quality of life for people everywhere.

examples:

Instant Messaging ... is a real-time communication form

Weblogs (blogs) a web than poeple can edit or enrich but many times is abaut oneperson like a journal.


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Wikis ... like blogs are websites that people can edit a reveiw like wikipedia but ismore a public creation of many people y collaboration.

podcasting.

E-Learning. (blended courses, are courses where you have e-learneing and tradicionallearning).

IN BUSINEESIntranets, private networks in use by just one company,Extranets, part of a companys intranet that is extended to users outside the company. normallyover the internet.

IN ENTERNTEINMEN

Industries enhances the ability to enjoy and share many forms of recreation, regardless oflocation.

1.2.1 What is comunication?

Establishing the Rules

An identified sender and receiverAgreed upon method of communicating (face-to-face, telephone, letter, photograph)

Common language and grammarSpeed and timing of deliveryConfirmation or acknowledgement requirements

The techniques that are used in network communications share these fundamentals with humanconversations.

1.2.2 Quality of Comunications.

factors affecting comunications can be internal or external

External Factors

The quality of the pathway between the sender and the recipientThe number of times the message has to change formThe number of times the message has to be redirected or readdressedThe number of other messages being transmitted simultaneously on the communication networkThe amount of time allotted for successful communication

Internal factors affecting the successful communication across the network include:


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The size of the messageThe complexity of the messageThe importance of the message

It is more difficult to deliver a large bulky package, quickly and without damage, than it is to delivera number of smaller, less complex packages.

1.2.3 Communicating over Networks

All the networks have 4 basics elementsin common

Rules or agreementsto govern how the messages are sent, directed, received andinterpretedThe messages or units of informationthat travel from one device to another

A means of interconnecting these devices- a medium that can transport themessages from one device to another

Devices on the networkthat exchange messages with each other

Standarization is important to any companys devices work togeter.

1.3.2 The Elements of a Network

4 elements of a network -Rules -Medium -Messages

-Devices


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existen cuatro caractersticas bsicas que la arquitectura subyacente necesita para cumplir con lasexpectativas de los usuarios: tolerancia a fallas, escalabilidad, calidad del servicio y seguridad.

.... APUNTES ACRONIMOSInterNetWork: Interconexion de dos o mas redesICMP: Internet Control Message Protocol.IM: Instant Messaging

apuntes capitulo 1 ccna 1.pdf

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