A．Email address and IP addressB．MAC address and port addressC．MAC address and IP addre
A. Email address and IP address
B. MAC address and port address
C. MAC address and IP address
D. port number and IP address
A．BufferB．Source-quench messagesC．windowD．WindowingE．Buffering
A. Buffer
B. Source-quench messages
C. window
D. Windowing
E. Buffering
A．frimesB．packetsC．packagesD．cells
A. frimes
B. packets
C. packages
D. cells
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