Basic Building Blocks - Computer Networks - Lecture Slides, Slides of Computer Networks

Some concept of Computer Networks are Aloha Ethernet, Application Layer Protocols, Basic Building Blocks, Computer Networking, Content Free Protocols, Medium Access Sub Layer, Packetised Filetransmission. Main points of this lecture are: Basic Building Blocks, Nodes, Switches, Forward Messages, Internet, Routers, Communication, Purpose Hardware, Hardware Building Blocks, Links

Typology: Slides

2012/2013

Uploaded on 04/27/2013

banoo
banoo 🇮🇳

4.5

(4)

43 documents

1 / 7

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Hardware Building Blocks
Nodes
Hosts for users
–Switches
Forward messages across a LAN
Routers
Forward messages across the Internet
Switch and/or Router must for Communication
Special purpose hardware
Docsity.com
pf3
pf4
pf5

Partial preview of the text

Download Basic Building Blocks - Computer Networks - Lecture Slides and more Slides Computer Networks in PDF only on Docsity!

Hardware Building Blocks

• Nodes

  • Hosts for users – Switches
    • Forward messages across a LAN
      • Routers
        • Forward messages across the Internet
          • Switch and/or Router must for Communication
            • Special purpose hardware

Hardware Building Blocks

• Links

  • TP/ Fibre/ Coaxial cable/ Wireless(radio,

microwave, infrared

  • physical medium – propagates signals
    • EM waves travelling at the speed of light in vacuum • speed varies with the medium

EM Range (Hz)

4

8

10

14

16

radio

microwave

infrared

Ultra violet

Visible light

satellite

10 AM

6

EM Range and Media

Fibre optic(visible light)

4

5

6

7

8

9

10

11

12

13

14

15

16

TP

Coaxial cable

satellite

Terestrialmicro wave

Radio – Micro wave – Infrared - UV

AM

FM

TV

Transmission of data

• Wave Must encode binary data

Implies this must encode binary data.