echo reply回声应答

1、Reply from220.181.12.218：bytes=32time=

Reply from220.181.12.218：bytes=32time=65msTTL=55，上述结果中显示发送的数据包的生存时间是（）.A32B65C55D1

2、PING使用了（）的Echo请求与Echo回答报文。

PING使用了（）的Echo请求与Echo回答报文。AICMPBARPCSNMPDIP

3、echo request回声请求

echo request回声请求

4、This bid is（）your reply reaching US wi

This bid is（）your reply reaching US with in 15 working days from today.Aup toBsubject toCsubjecting toDsubjected to

5、Your prompt reply ____．

Your prompt reply ____．A will be highly appreciatedB will be thankedC is to be thankedD is appreciated high

6、●向目标发送ICMP回声请求(echo)报文的命令是 (46) 。

●向目标发送ICMP回声请求(echo)报文的命令是 (46) 。A(46) TracertBArpCNslookupD Netstat