N10-005 · Question #481
A technician installs a wireless router on an existing network by connecting it directly to the firewall. By default, the main network is a Class A network, while the wireless network is a Class C…
The correct answer is C. Allow the main network to handle DHCP. When a wireless router is plugged into the network, it typically runs its own DHCP server and assigns Class C addresses (e.g., 192.168.x.x) to wireless clients. However, the firewall and the rest of the main network use a Class A address scheme. The wireless clients receive…
Question
A technician installs a wireless router on an existing network by connecting it directly to the firewall. By default, the main network is a Class A network, while the wireless network is a Class C network. After the wireless router is installed, users connected to the wireless network report they are unable to connect to the Internet. Which of the following needs to be configured to BEST resolve this issue?
Options
- AConfigure the main network to Class C
- BAllow for duplicate IP addresses
- CAllow the main network to handle DHCP
- DCreate a spanning tree to prevent switching loops
How the community answered
(27 responses)- A4% (1)
- B11% (3)
- C81% (22)
- D4% (1)
Explanation
When a wireless router is plugged into the network, it typically runs its own DHCP server and assigns Class C addresses (e.g., 192.168.x.x) to wireless clients. However, the firewall and the rest of the main network use a Class A address scheme. The wireless clients receive addresses that are on a different subnet, and the firewall does not know how to route traffic back to those Class C addresses, causing the internet connection to fail. The fix is to disable DHCP on the wireless router and let the main network's DHCP server assign addresses from the main Class A range. This ensures wireless clients get routable addresses recognized by the firewall.
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