Network TroubleshootingCâu 89 / 100
Which command tests basic reachability to a remote host by sending ICMP echo requests?
a.ping
b.tracert
c.arp
d.nbtstat
Giải thích
The ping command sends ICMP echo requests and measures replies to test basic reachability and round-trip time. Successful replies confirm Layer 3 connectivity. Lack of replies may indicate a down host, filtering, or a routing problem.
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