What is the significance of the IP address 192.168.0.99 in the context of the notes?

• A. It is the address of the machine running Snort.
• B. It is a public global address.
• C. It is the gateway address for the network.
• D. It is an address reserved for the DHCP server.

Answer: (A)

Private IP addresses like 192.168.0.99 are meant for internal networks and are not reachable on the public Internet. In many lab setups, the 192.168.0.0/24 network is used for a small, isolated environment, and devices are given specific addresses within that range. If the notes designate 192.168.0.99 as the address, it’s signaling a particular host in the lab—namely the machine running Snort, the intrusion detection system. That assignment makes sense because it keeps the Snort sensor on a predictable, private address separate from publicly routable addresses, allowing traffic to be monitored without exposing the sensor to the wider Internet.

This address isn’t the gateway, which is typically something like 192.168.0.1, and it isn’t inherently reserved for the DHCP server (that role is usually assigned to another device, like the router or a dedicated server). So, the best fit for the note’s context is that this IP identifies the Snort machine.