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3. The Data Link Connection Identifier (DLCI) is a number that is required by the frame relay switch (DCE) to identify the destination router of the incoming packet. To define the mapping between a destination protocol address and the data-link connection identifier (DLCI) used to connect to the destination address. What is the difference between static and dynamic mapping? (1 mark) 4. ( 2 mark) What the command used for: 1- Command used for enabling Frame Relay encapsulation. 2- Command used to configure R2 and R3 for static frame relay map