CCIE-R&S笔试题疑问题目求大神解答

wukunpeng

ICMP Echo requests from host A are not reaching the intended destination on host B. What is the
problem?
A. The ICMP payload is malformed.
B. The ICMP Identifier (BE) is invalid.
C. The negotiation of the connection failed.
D. The packet is dropped at the next hop. E. The link is congested.
Correct Answer: D


为毛答案是B啊，求解答  不知道如何解该题

蓝色幽思

我也不知道呢，同求答案详解我也不知道呢，同求答案详解

wangpeng00009

time to live(ttl)=1 代表数据包经过一跳后就会丢弃。

lin@scanyue

感谢