• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Redes I - 2.1 - Camada Física e Tecnologias de Transmissão
 

Redes I - 2.1 - Camada Física e Tecnologias de Transmissão

on

  • 4,150 views

Camada Física (1 de 2)

Camada Física (1 de 2)

Statistics

Views

Total Views
4,150
Views on SlideShare
4,150
Embed Views
0

Actions

Likes
0
Downloads
241
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as OpenOffice

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • Internetworking and the OSI Model Repeaters work at the physical layer. They simply repeat any signal from one cable plant to the next. Concentrators are repeaters but offer more fault isolation than normal repeaters. Bridges work at the data link layer. Specifically, they forward based on the MAC address of the packet. Routers work at the network layer. They forward based on a network identification inside the packet, not on the MAC address. Gateways operate the the session, presentation and application layer. They provide protocol translation between different communication types.
  • This device was introduced around 1985 after UTP wire began being used. It is usually called a concentrator although it can be called a hub. It houses repeater modules that slide into the chassis. Concentrators house all repeater types into one unit using repeater modules that are connected together with a common backplane. It allows the concentrator to act as one repeater. It reduces the number of repeaters on a network. Concentrators usually have connections for fiber, 10BASET, 10BASE2 and one connector for 10BASE5 (connection to external cable plant). It added life to the Ethernet standard by providing a physical star topology. The concentrator allows for better network management
  • This device was introduced around 1985 after UTP wire began being used. It is usually called a concentrator although it can be called a hub. It houses repeater modules that slide into the chassis. Concentrators house all repeater types into one unit using repeater modules that are connected together with a common backplane. It allows the concentrator to act as one repeater. It reduces the number of repeaters on a network. Concentrators usually have connections for fiber, 10BASET, 10BASE2 and one connector for 10BASE5 (connection to external cable plant). It added life to the Ethernet standard by providing a physical star topology. The concentrator allows for better network management

Redes I - 2.1 - Camada Física e Tecnologias de Transmissão Redes I - 2.1 - Camada Física e Tecnologias de Transmissão Presentation Transcript