The "/25" represents the network mask of the destination network in CIDR notation. It indicates that the subnet mask is 255.255.255.128, meaning the first 25 bits are the network portion and the remaining 7 bits are for host addresses. Recognizing this helps determine the subnet's size and address range.
The other options are incorrect because:
Administrative distance refers to the trustworthiness of a route, not indicated by "/25".
The metric is a value used by routing protocols to determine the best path and is shown in brackets, not by the prefix length.
The prefix length of the next-hop address is not relevant in this context; the prefix length applies to the destination network.
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Cisco CCNA 200-301
IP Connectivity
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