ICMP(Internet Control Message Protocol)의 메시지 타입으로 옳지 않은 것은?
Source Quench
Port Destination Unreachable
Echo Request, Echo Reply
Timestamp Request, Timestamp Reply
ICMP(Internet Control Message Protocol)의 메시지 타입으로 옳지 않은 것은?
A. Source Quench
B. Port Destination Unreachable
C. Echo Request, Echo Reply
D. Timestamp Request, Timestamp Reply