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Q. Explain physical layer of Osi reference model?
- The physical layer deals among the physical characteristics of the transmission medium.
- It defines the mechanical, electrical, procedural and functional specifications for maintaining, activating and deactivating the physical link between end systems.
- Such characteristics like timing of voltage changes, voltage levels, physical data rates, maximum transmission distances, physical connectors and other similar attributes are defined by physical layer specifications.
- Instances RJ45, EIA/TIA-232 and NRZ
Q. How to connect Remote LANs? - Remote bridges acting as connecting devices to connect LANs and point-to-point networks such as leased telephone lines or ADSL lines
Non-Blocking and Blocking network In Non-blocking networks, route from a free input node to another free output node can forever be provided. Crossbar is an illustration of non
Describe Circuit switching, Packet switching and Virtual Circuit Packet switching. Explain their suitability for different applications such as telephone and internet. Packet S
Hubs/Repeaters Hubs/Repeaters are used to connect together two or more network segments of any media type. In larger design, signal quality starts to deteriorate as segment exc
Satellite Radio Channels A communication satellite links two or more earth microwave transmitter receiver, know as ground stations. The satellite receives transmission on
a) TP lite , based on stored procedures. b) TP heavy , based on the TP monitors.
Q. What is Virtual LANs? Virtual LANs - LAN (Local area network) configured by software not by physical wiring Virtual LANs - Divides a LAN into logical, in
In the VOIP system, let h be the total number of header bytes added to each chunk, including UDP and IP header. a) Assuming an IP datagram is emitted every 20 msec, find the tr
What is the major issue with routing by rumor?
What is a Associative Memory
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