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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
Used in IP Networks to break up larger networks into slighter subnetworks. It is used to decrease network traffic, Optimized network performance, and make simpler management i.e. t
Can you define tunneling?
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Can you describe PPP protocol?
Recognize the command to disable CDP on an interface Ans) Router(config-if)# no cdp enable
Q. Presentation layer of osi reference model? - The presentation layer makes sure that the information that the application layer of one system sends out is readable by the app
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