What is the most likely problem if a ping fails when using a device's hostname but not when using the device's IP address?
A) ARP
B) DNS
C) DHCP
D) ND
B
Explanation: B) If a device can reach a device via an IP address but not by a name, it is always a naming issue regardless of whether using ping or any other application. Because the Domain Name System (DNS) is (typically) responsible for network naming, it would be the most likely problem. However, it is possible in very small environments to use local hosts files instead of a local DNS server; in this case, the problem would most likely be with the local hosts file.
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