Day 01 OSI

8/3/2019 Day 01 OSI

1/29

1

8/3/2019 Day 01 OSI

2/29

2

CCNACisco Certified Network Associate

8/3/2019 Day 01 OSI

3/29

3

Course Introduction

8/3/2019 Day 01 OSI

4/29

4

Cisco Career Certifications

Professional

CCIE

CCNPCCNP

CCNACCNAAssociate

http://www.cisco.com/go/certifications

Recommended Training Through

Cisco Learning Partners

RequiredExam

CCNA

INTRO andICND

Cisco Certified Network Associate

Introduction to Cisco NetworkingTechnologies and InterconnectingCisco Network Devices

Expert

CCNA Exam 640-801

8/3/2019 Day 01 OSI

5/29

5

How to be CCNA certified ?

Option 1Pass the CCNA exam 640-801

(60-70 questions in 2 hours)

Option 2

Pass the INTRO exam 640-821

(40-50 question in 1.5 hours)+

Pass the ICND exam 640-811

(40-50 question in 1.5 hours)

8/3/2019 Day 01 OSI

6/29

6

Cisco Different Certifications Fields

CCIE Routing

and Switching

CCNP

CCNA

Network Implementation Network Design

None

CCNP

CCDA

or

CCNA

CCIE

Service Provider

CCIP

CCNA

Network Service Provider

CCIE

Security

CCSP

CCNA

Network Security Voice Networks

CCIE

Service Provider

CCIP

CCNA

Storage Networking

CCIE

Voice

CCVP

CCNA CCNA

None

CCIE

Storage Networking

8/3/2019 Day 01 OSI

7/29

7

Cisco Qualified Specialist

Access Routing and LAN Switching

Content Networking IP Communications Certifications

Network Management Certifications

Optical Certification

Storage Networking Certifications

VPN and Security Certifications

Wireless LAN Certifications

Sales Specialist

One exam gives you one specialist certificate

8/3/2019 Day 01 OSI

8/29

8

Course Topics

- Introduction , OSI , TCP/IP

- Physical Layer , Data Link Layer

- Network layer , IP Addressing , Subnetting

- Transport Layer

- Introduction to Cisco IOS

- Routing Protocols ,Distance Vector ,RIP v.1, IGRP- Link State , OSPF

- EIGRP , RIP v2 , Route Summarization , VLSM

- Access List , NAT

- Switching- Introduction to WAN

- ISDN

- Frame Relay

8/3/2019 Day 01 OSI

9/29

9

Network:

is basically all the components (H/W &

S/W) involved in connecting computer across

small and large distance

Importance of Networks:

Easy access and sharing of information

Sharing of expensive devices and networkresources

Modern Technologies (IP telephony, Video

on Demand, .etc)

Networking Technologies

8/3/2019 Day 01 OSI

10/29

10

Network components

Network has three main components

Computers (servers and hosts)

- Source of applications (network aware applications)

- ex: HTTP (Hyper Text Transmission Protocol),

FTP (File Transfer Protocol),

SNMP (Simple Network Management Protocol)

Telnet

Network Devices

- Devices that interconnect different computers together

- ex: Repeaters, hub, bridge, switch, router, NIC and modems

Connectivity- Media that physically connect the computers and network devices

- ex: Wireless and cables

8/3/2019 Day 01 OSI

11/29

11

Network Types

LAN (Local Area Network):

It is a group of network components that work

within small area

MAN (Metropolitan Area Network):It is a group of LANs that are interconnected

within small area

WAN (Wide Area Network):It is a group of LANs that are interconnected

within large area

8/3/2019 Day 01 OSI

12/29

12

Network Topologies

Topology:

How devices are connected together

Physical Topology: It describes how devices are physically cabled

Logical Topology: It describes how devices communicate across

physical topology ex. unicast , broadcast , multicast

8/3/2019 Day 01 OSI

13/29

13

Reference Models

- describe data transfer standards

- a framework (guideline) for network

implementation and troubleshooting

- divides complex functions in to simpler

components

- Reference model types :

- OSI- TCP/IP

8/3/2019 Day 01 OSI

14/29

14

Reference Models

7 Application

6 Presentation5 Session

4 Transport

3 Network

2 Data Link

1 Physical

Application

Transport

Internet

Network

Access

8/3/2019 Day 01 OSI

15/29

15

The OSI Reference model

7 Application

6 Presentation

5 Session

4 Transport

3 Network

2 Data Link

1 Physical

transmission example

AB

7 Application

6 Presentation

5 Session

4 Transport

3 Network

2 Data Link

1 Physical

8/3/2019 Day 01 OSI

16/29

16

The Application Layer-7Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network

2 Data Link1 Physical

This layer deal with

networking applications.

Examples:

y Email

y Web browsers

PDU - User Data

8/3/2019 Day 01 OSI

17/29

17

The Presentation Layer-6Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network


This layer is responsible

for presenting the data in

the required format which

may include:

y Encryption

y Compression

PDU - Formatted Data

8/3/2019 Day 01 OSI

18/29

18

The Session Layer-5Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network


This layer establishes,

manages, and terminates

sessions between two

communicating hosts.

Example:

y Client Software

( Used for logging in)

PDU - Formatted Data

8/3/2019 Day 01 OSI

19/29

19

The Transport Layer-4Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network


This layer breaks up the

data from the sending host

and then reassembles it in

the receiver.

It also is used to insure

reliable data transport

across the network.

PDU - Segments

8/3/2019 Day 01 OSI

20/29

20

The Network Layer-3Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network


Sometimes referred to as the

Cisco Layer.

Makes Best Path

Determination decisions

based on logical addresses

(usually IP addresses).

PDU - Packets

8/3/2019 Day 01 OSI

21/29

21

The Data Link Layer-2Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network


This layer provides reliable

transit of data across a

physical link.

Makes decisions based on

physical addresses (usually

MAC addresses).

PDU - Frames

8/3/2019 Day 01 OSI

22/29

22

The Physical Layer-1Layer

7 Application

6 Presentation

5 Session

4 Transport

3 Network


This is the physical mediathrough which the data,

represented as electronic

signals, is sent from the

source host to thedestination host.

Examples:

y UTPy Coaxial (like cable TV)

y Fiber optic

PDU - Bits

8/3/2019 Day 01 OSI

23/29

23

Encapsulation Process

8/3/2019 Day 01 OSI

24/29

24

TCP/IP model

Application

Transport

Internet

Network

Access

7 Application

6 Presentation

5 Session

4 Transport

3 Network

2 Data Link

1 Physical

8/3/2019 Day 01 OSI

25/29

25

The Application Layer

8/3/2019 Day 01 OSI

26/29

26

The Transport Layer

reliable

service

unreliable

service

8/3/2019 Day 01 OSI

27/29

27

The Internet Layer

IP addressing , routing

8/3/2019 Day 01 OSI

28/29

28

The Network Access Layer

L2 LAN technologies : Ethernet , Tokenring , FDDI

L2 WAN technologies : Point-to-Point (HDLC , PPP) ,

Frame relay , X.25 , ATM

8/3/2019 Day 01 OSI

29/29

29

Hierarchical Network Model

Day 01 OSI

Documents

Transcript of Day 01 OSI