Asynchronous Transfer Mode ATM is the cell relay protocol designed by ATM Forum and adopted by the ITU-T. Cell, a small fixed size block of information with asynchronous TDM ensures high speed real time transmission with efficient and cheaper technology. Instead of user addresses, it uses virtual circuit identifier and virtual path identifier, which can be repeated at unrelated locations. This technology ensures connectivity to much more users than normal packet switching networks.
ATM and ISDN-B combination allows high-speed interconnection of world's network.
Asynchronous Transfer Mode ATM is the cell relay protocol designed by ATM Forum and adopted by the ITU-T. Cell, a small fixed size block of information with asynchronous TDM ensures high speed real time transmission with efficient and cheaper technology. Instead of user addresses, it uses virtual circuit identifier and virtual path identifier, which can be repeated at unrelated locations. This technology ensures connectivity to much more users than normal packet switching networks.
ATM and ISDN-B combination allows high-speed interconnection of world's network.
For beginners in Computer Networking field, know about basics about what is Computer Networks, what are ways through which we can communicate, what is meant by protocols, he famous OSI its layers and TCP/IP and its layers, What makes a Networking Device, basic topologies of Computer Networks, special purpose network devices like Switch, routers, repeter, bridges and hub, and basics of networking methods, basics of ethernet, TCP its characteristics, UDP, TCP vs UDP, One would wonder what happens when information particular to each layer is read by the corresponding protocols at target machine or why is it required?
#network devices #computer network
hi guys,
here is a presentation about network devices.
for more computer network ppt , refer my profile.
you can also visit my YouTube channel TECHISEASY for videos on this topic.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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2. HUB
• Hub Can Detect only Physical Pc but cant detect Mac Address
• A hub is a device to which all devices sharing a physical network can be a physically connected to
form a or “LAN”. Hubs do little more than enable the electrical currents from a computer sending
a packet to pass to all other devices connected to it.
3. Switch
• Switch can detect specific devices that are connected to it
• Switch can detect MAC address.
• Keeps Record of the MAC addresses of those devices.
• A switch is a data link layer device. The switch can perform error checking before
forwarding data.
• Improved network performance
4. Router
• Router Can Detect IP Address and Mac Address
• Router is mainly a Network Layer device.
• When a device in a Local Area Network needs to communicate with a device on another LAN, it
must send that traffic to a specialized device connected to the LAN called a “router”
5. Bridge
• A bridge operates at data link layer.
• A bridge is a repeater, with add on the functionality of filtering content by reading the MAC
addresses of source and destination.
• It is used for interconnecting two LANs working on the same protocol.
• It has a single input and single output port, thus making it a 2 port device.
6. Repeater
• A repeater operates at the physical layer.
• Its job is to regenerate the signal over the same network before the signal becomes too weak or
corrupted.
• When the signal becomes weak, they copy the signal bit by bit and regenerate it at the original
strength.
• It is a 2 port device.