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Consider the following statements
(I) The two main function of data link layer are data link control and media access control
(II) DLL guarantees reliable delivery of packets, hence no acknowledgements required.

[A] Only I is true    [B] Only II is true    [C] Both are true    [D] None

Please explain your choice.
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[A] Only | is true

DLL controls the access control (eg. token passing ); as the name suggests, it also helps in data link control.

but DLL does not guarantees reliable delivery of packets in between hops.

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