Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Communication Using a Network
Data Communication• Transmission of information between two computers  or nodes                          Basic            ...
Signaling Techniques – I• Two types of Signaling techniques:   – Baseband   – Broadband• Baseband Signals:   – Uses single...
Signaling Techniques – II• Broadband Signals:   – Data is transmitted using more than one frequency   – Uses analog signal...
Network Interface Card (NIC) - I• Hardware device used to connect different computers  on Network• Serves as a link for se...
Network Interface Card (NIC) - II• Operates at layer 2 of the OSI model• Supports data transfer rate of 10, 100 or 1000  M...
Ethernet Card• Used in devices which are connected using Ethernet  technology• Two types of Ethernet network card – Wired ...
Types of Ethernet Card - I• 10Base-5 (Thicknet) NIC• 10Base-2
Types of Ethernet card - II• 10BaseT• Fiber –optic
Token Ring Card• Used to connect to a token ring network• Assigned a MAC address by IEEE• Maximum of two token ring  cards...
Physical Connections• Physical Connections   – NIC either connected on a PCI or PCI-X slot   – NIC cards can be connected ...
Lights on NIC and hub• Different LEDs on NIC:   –   Link LED   –   ACT LED   –   Speed LED   –   Collision LED• LEDs on Hu...
Different LEDs on a NIC• Link LED – Used to indicate whether any  network connection is present or not• Act LED – If this ...
MAC Address•   Also known as hardware or physical address•   Used to identify nodes at lower levels of the OSI model•   MA...
Frame Structure• A MAC frame is divided into 4 parts• A maximum of 1500 bytes of data can be sent  in a frame• CRC is only...
MAC vs IP address       MAC address                 IP addressFunctions at data link     Functions at network layerlayerIt...
Installing the NIC• Different factors while choosing NIC:   – Bus type (Expansion slot)   – Speed   – Connection type (cab...
Direct Cable Connection• One device acts as a host and other acts as a guest• Can also use infrared connection, if both no...
Diagnostic and Repair of Physical          Cabling using tools• Tools can be used to identify the problems and also  troub...
Tone generators and probe – I• Tone generator is a network troubleshooting tool• Consists of single or multi-tone signal, ...
Optical tester• Fiber optic NICs mostly do not have any lights so making  the diagnosis of the problem becomes little diff...
Upcoming SlideShare
Loading in …5
×

Communication using network

1,596 views

Published on

Click Here

http://www.eacademy4u.com/

Online Educational Website For You

Published in: Education, Technology, Business
  • Be the first to comment

  • Be the first to like this

Communication using network

  1. 1. Communication Using a Network
  2. 2. Data Communication• Transmission of information between two computers or nodes Basic Components Sender Receiver Medium Message Protocol
  3. 3. Signaling Techniques – I• Two types of Signaling techniques: – Baseband – Broadband• Baseband Signals: – Uses single frequency to transmit data – Transmit information in digital form
  4. 4. Signaling Techniques – II• Broadband Signals: – Data is transmitted using more than one frequency – Uses analog signals – Adds additional information to carrier signals by process of modulation
  5. 5. Network Interface Card (NIC) - I• Hardware device used to connect different computers on Network• Serves as a link for sending and receiving data on a network• MAC address is address assigned by IEEE to identify network card NIC Types Ethernet Card Token Ring Card
  6. 6. Network Interface Card (NIC) - II• Operates at layer 2 of the OSI model• Supports data transfer rate of 10, 100 or 1000 Mbps• User can select an NIC depending on the type of network, protocol and media used• MAC address is stored on the PROM of the NIC
  7. 7. Ethernet Card• Used in devices which are connected using Ethernet technology• Two types of Ethernet network card – Wired and wireless• A wireless Ethernet card can not communicate with a wired Ethernet card and vice-versa• Different types of Ethernet cards can be used depending on the type of network and corresponding connector that is required
  8. 8. Types of Ethernet Card - I• 10Base-5 (Thicknet) NIC• 10Base-2
  9. 9. Types of Ethernet card - II• 10BaseT• Fiber –optic
  10. 10. Token Ring Card• Used to connect to a token ring network• Assigned a MAC address by IEEE• Maximum of two token ring cards can be installed at any node• Consists of 9 pin DIN type connector which connects card to network cable
  11. 11. Physical Connections• Physical Connections – NIC either connected on a PCI or PCI-X slot – NIC cards can be connected to an USB port or can have a PC card connection• Depends on one of the cable connectors: – BNC connector – ST-fiber optic connector – RJ-45 connector
  12. 12. Lights on NIC and hub• Different LEDs on NIC: – Link LED – ACT LED – Speed LED – Collision LED• LEDs on Hub: – Power LED – Port LED
  13. 13. Different LEDs on a NIC• Link LED – Used to indicate whether any network connection is present or not• Act LED – If this LED flashes it indicates that some activity is taking place on the network• Speed LED – ON state indicates that it operates at 100 Mbps and off for 10 Mbps• Collision LED – Glows when a collision takes place and present on some old NICs
  14. 14. MAC Address• Also known as hardware or physical address• Used to identify nodes at lower levels of the OSI model• MAC address assigned by IEEE• Is a 12 digit hexadecimal number (48 bit address)
  15. 15. Frame Structure• A MAC frame is divided into 4 parts• A maximum of 1500 bytes of data can be sent in a frame• CRC is only 4 bytes long
  16. 16. MAC vs IP address MAC address IP addressFunctions at data link Functions at network layerlayerIt is a physical address It is a logical addressIt is fixed It changes with the relocation of device from one network to anotherIt is a 48 bit address It is a 32 bit address
  17. 17. Installing the NIC• Different factors while choosing NIC: – Bus type (Expansion slot) – Speed – Connection type (cabling)• Hardware Requirements: – Pentium I/233MHz – 32 MB RAM – 2 GB of available hard disk
  18. 18. Direct Cable Connection• One device acts as a host and other acts as a guest• Can also use infrared connection, if both nodes have required hardware• All the latest versions of windows provide a software which allows a user to have a direct serial-to-serial, parallel-to- parallel, or infrared-to-infrared connection with the other PC.• To establish a connection using serial ports, a cable known as null modem is used• Connection speed of serial data cable connection is very slow but it’s a cheaper option when NICs are not available
  19. 19. Diagnostic and Repair of Physical Cabling using tools• Tools can be used to identify the problems and also troubleshoot these problems• Various tools available for checking network are: – Volt-ohm meters (VOMs) – Cable-testing tool used to measure parameters • Analog • Digital
  20. 20. Tone generators and probe – I• Tone generator is a network troubleshooting tool• Consists of single or multi-tone signal, two test leads and a 4-conductor modular cable• Acts like a radio transmitter• Probe: – Works like a radio receiver – Catches a tone when placed near wire
  21. 21. Optical tester• Fiber optic NICs mostly do not have any lights so making the diagnosis of the problem becomes little difficult• Optical tester is used to inspect the quality of the connections

×