Question 63

The default gateway is 172.25.1.252.

The default gateway is the device that routes traffic from a local network to other networks, typically the internet. In this case, the default gateway is identified as 172.25.1.252.

A) 172.25.1.252

This option is correct as it is explicitly mentioned in the extract as the router, which serves as the default gateway. The default gateway's role is to forward packets to destinations outside the local subnet, and 172.25.1.252 fulfills this function.

B) 172.25.1.39

This option is incorrect because it refers to the IPv4 address of a device within the local network, not the default gateway. While it is part of the same subnet, it cannot route traffic to external networks.

C) 172.25.1.4

This option is also incorrect. Although 172.25.1.4 is listed as the name server in the extract, it does not serve the function of a default gateway. Name servers are used for resolving domain names, not for routing traffic.

D) 255.255.255.0

This option is incorrect as it represents the subnet mask, not a gateway. The subnet mask is used to define the network and host portions of an IP address, but it does not perform routing functions.

Conclusion

The correct answer, 172.25.1.252, serves as the default gateway, enabling communication between the local network and external networks. All other options either represent local device addresses or network configurations that do not fulfill the routing role of a default gateway.