單項(xiàng)選擇題

Refer to the exhibit. Given the interface configuration on a DSL connection with PPPoE, select the true statement.()

A.The router is limiting the size of TCP and UDP packets. 
B.The configuration implements an effective Layer-2 fragmentation technique.
C.The value of 542 is recommended in several RFCs. 
D.There is another upstream router terminating the PPPoE session.

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