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Which OSI layer provides mechanical, electrical, procedural for
activating, maintaining physical link?
A.) Presentation
B.) Network
C.) Application
D.) Physical
E.) Transport
F.) Data-Link
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Answer / guest
Answer: D
Layer 1 the Physical layer performs this function.
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hello friend i have answerd more time of your question or doute.now i am seeing towards you for help,plz send the soln before monedya the problem is i have three router r1 and r2 and r3 they are conested in that maneer thai is r1---r2---r3---server | | server bothe server have diffrent ip now i have to implemnt access list on the r3 router in such a way that user from r1 can access only one server while user from r2 can access whole servre i ahve done it but both user of r1 and r2 uses all server i need help please help me this time? i have repalsced my firwall by r3 router so bacicaly i have to implement it on my firewall but you tell me on cisco router please help
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1 Answers Aptron, Cisco, HCL, Volvo,
CCNA 
