Local-Area Networks - PowerPoint PPT Presentation

Loading...

PPT – Local-Area Networks PowerPoint presentation | free to download - id: 459f48-ZGIxM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Local-Area Networks

Description:

Local-Area Networks Topology Defines the Structure of the Network Physical topology actual layout of the wire (media) Logical topology defines how the media ... – PowerPoint PPT presentation

Number of Views:33
Avg rating:3.0/5.0
Slides: 24
Provided by: docenteUc1
Category:
Tags: area | local | network | networks

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Local-Area Networks


1
Local-Area Networks
2
Topology
  • Defines the Structure of the Network
  • Physical topology actual layout of the wire
    (media)
  • Logical topology defines how the media is
    accessed by the hosts

3
Physical Topology
4
LAN Devices in a Topology
5
Network Interface Cards (NICs)
  • When Selecting a NIC, Consider the Following
  • Network architecture
  • Operating system
  • Media type
  • Data transfer speed
  • Available bus types

6
NICs
  • Bus Architectures
  • ISA (Industry Standard Architecture)
  • EISA (Extended ISA)
  • PCI (Peripheral Component Interconnect)
  • MCA (Micro Channel Architecture)
  • PCMCIA (Personal Computer Memory Card
    International Association)

7
NICs in the OSI Model
8
Media
  • The basic function of media is to carry a flow of
    information, in the form of bits.
  • Layer 1 components.

9
Repeaters Layer 1
10
Repeaters
A repeater solves the problem of too many nodes
and not enough cable cleans, amplifies, and
resends a signal that is weakened by long cable
length.
11
Hubs Layer 1
12
Hubs
  • Regenerate and repeat signals
  • Used as network concentration points
  • Multiport repeater

13
Bridges Layer 2
14
Bridges
Bridges filter traffic by looking at MAC
addresses.
Designed to create two or more LAN segments, each
of which is a separate collision domain
15
Switches Layer 2
16
LAN Switches
Combine the connectivity of a hub with the
traffic regulation of a bridge on each port
17
Switches
18
Routers Layer 3
19
Routers
  • Two primary purposes path selection, and
    switching of packets to the best route
  • Use logical addresses (network layer addresses)

20
Network Cloud
Layer 1 through 7 device
21
Network Segments
Connected by networking devices
22
Devices / Function / Layers
23
Data Flow Through LANs
About PowerShow.com