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Consider the purpose of the Link Layer and the services it provides to mark true/correct assertion(s)/statement(s).
A. L2 services provide reliable data transfer between directly connected nodes.
B. L2 protocols wrap the datagram provided by a network-layer protocol and unwrap the frames received from an adapter.
C. L2 protocols perform bit-level error detection and correction.
D. L2 protocols do not perform Medium Access Control if the sender and the receiver are connected point-to-point.
E. Random Medium Access Control protocol is a distributed algorithm implemented on each node.