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Problem:

At what layer of the OSI model do the 802.11 standards vary?
A) Physical layer
B) Network layer
C) Data link layer
D) Transport layer

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2 Answers

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Solution:

Physical layer

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Physical layer is responsible for putting bit on air and  this physical layer of OSI model do the 802.11 standard vary.  Physical layer is lower layer in the OSI model and  it is responsible for sending bit from one computer to other computer. Physical layer deal with bit level transmission between different devices and supports electrical interface connected to physical medium for communication. Physical layer devices are repeaters, hubs, networks interface card (NICs), cables and connectors. There are seven layer and OSI model and each layer define their own task as this physical layer  define the connection between two device or computer.
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Solution:

The Correcet Answer of this question is A) Physical Layer

Explanation:

The Open Systems Interconnection model (OSI model) is a theoretic model that characterises and standardises the communication functions of a telecommunication or computing system without consideration to its underlying internal structure and technology. Its goal is the interoperability of different communication systems with standard communication protocols. The model partitions a communication system into repeal layers.

For Further Reading Go To This Link https://en.wikipedia.org/wiki/OSI_model

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