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单选题
What happens when you issue the ping 172.19.102.2 count 5 command?（）
A
ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.
B
ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.
C
ICMP echo requests are sent to 172.19.102.2 five times.
D
ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.
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更多 “单选题What happens when you issue the ping 172.19.102.2 count 5 command?（）A ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C ICMP echo requests are sent to 172.19.102.2 five times.D ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.” 相关考题
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What happens when you issue the ping 172.19.102.2 count 5 command?（）A、ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B、ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C、ICMP echo requests are sent to 172.19.102.2 five times.D、ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.
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考题
单选题What happens when you issue the ping 172.19.102.2 count 5 command?（）A
ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B
ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C
ICMP echo requests are sent to 172.19.102.2 five times.D
ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.
考题
单选题When you issue the logging trap informational command, what happens? （）A
An information trap is sent to the SNMP server.B
Informational and debug messages are logged to the syslog server.C
All messages are sent to the logging host, where selections are made.D
All messages from emergencies to informational are sent to the logging host.
考题
单选题常用来进行网络连通性检查的Ping命令工具，它的工作原理为（）。A
向目标主机发送UDP Echo Request数据包，等待对方回应UDP Echo Reply数据包B
向目标主机发送ICMP Echo Request数据包，等待对方回应ICMP Echo Reply数据包C
向目标主机发送UDP Echo Reply数据包，等待对方回应ICMP Echo Request数据包D
向目标主机发送ICMP Echo Reply数据包，等待对方回应ICMP Echo Request数据包
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