The '/16' indicates that the network mask has 16 bits set to one, corresponding to the prefix length of the network. This means the subnet mask is 255.255.0.0, and the network includes all IP addresses where the first two octets are 172.16. Options B and D are incorrect because the '/16' does not represent administrative distance or metric values, which are indicated elsewhere in the routing table. Option C is incorrect because '/16' does not indicate the number of hosts; instead, it represents the network prefix length.
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What is a subnet mask and how does it relate to the '/16' notation?
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What does prefix length mean in networking?
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How do administrative distance and metric differ from the '/16' notation in a routing table?
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Cisco CCNA 200-301
IP Connectivity
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