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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
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what is the use of route print?
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Persistent and No persistent Connections HTTP can use both persistent and non persistent connection. By defaults uses persistent connections. Persistent Connections
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Recognize the access-list range for an extended IP access-list? Ans) IP extended access-lists use the number range of 100-199.
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