单选题When an ICMP redirect is received， which of the following options is the most appropriate to conclude？（）A A routing table has changedB The IP address has changedC The system has become a gatewayD A hacker is posing a threat to the system
题目
单选题
When an ICMP redirect is received， which of the following options is the most appropriate to conclude？（）
A
A routing table has changed
B
The IP address has changed
C
The system has become a gateway
D
A hacker is posing a threat to the system