In a PPPoE client configuration, what is the effect of add-default-route=yes?

In a PPPoE client configuration, what is the effect of add-default-route=yes?

• A. It adds a default route via the PPPoE interface
• B. It adds a DNS server
• C. It configures a static IP
• D. It enables IPsec

Answer: (A)

The idea being tested is how routing is affected when a PPPoE connection comes up. When add-default-route is set to yes, the system automatically installs a default route (0.0.0.0/0) that uses the PPPoE session as the gateway. This means any traffic destined for destinations not explicitly listed in local routes will be forwarded through the PPPoE link, allowing you to reach the internet via the ISP over that PPPoE connection. This option changes how you reach the wider network but doesn’t change DNS settings, assign a static IP, or enable IPsec. DNS may be provided by the ISP during PPP negotiation or configured separately, static IP address is assigned by the PPP session, and IPsec is a separate feature.

The idea being tested is how routing is affected when a PPPoE connection comes up. When add-default-route is set to yes, the system automatically installs a default route (0.0.0.0/0) that uses the PPPoE session as the gateway. This means any traffic destined for destinations not explicitly listed in local routes will be forwarded through the PPPoE link, allowing you to reach the internet via the ISP over that PPPoE connection.

This option changes how you reach the wider network but doesn’t change DNS settings, assign a static IP, or enable IPsec. DNS may be provided by the ISP during PPP negotiation or configured separately, static IP address is assigned by the PPP session, and IPsec is a separate feature.