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Sonet Devices
STS Mux or DMux either multiplexes signals from multiple sources into an STS or demultiplexes an STS into different destination signals.
Regenerator is a repeater that takes a received optical signal and regenerates it. This devices function at the data link layer.
Add/drop multiplexer is able to add signals from different sources into a given path or remove a desired signal from a path and redirect it without demultiplexing the entire signal.
Buffering This protocols provides the advantage of buffering to the receiver can buffer any out of order packets after being received by sending acknowledgment when
Explain what are the External Threats External security threats are the most problematic ones. Till date the greatest threat was the virus menace. Now, with the sophisticated
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
a) Manages protocol access to the physical network medium b) Permits multiple devices to uniquely signify one another on the data link layer
Router(config-if)# bandwidth 56
Reliable Data Transfer Figure illustrate the framework for reliable transfer. The service abstraction provided to the upper layer entities is that of a reliable channel
As in PRAM, there was no direct communication medium among the processors, therefore another model called as interconnection networks have been designed. In the interconnection net
RIP and IGRP are Distance Vectoring protocols that send their whole routing tables to their neighbours. In some Cisco literature, EIGRP is listed as an 'advanced distance vector
What is the difference between a hub and a switch? A hub acts as a multiport repeater. Though, as more and more devices connect to it, it would not be able to efficiently manag
Q. Explain about Star Backbone network? - Collapsed or switched backbone - Backbone is just one switch that connects LANs - Utilized as distribution backbone inside a bui
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