Question 63

The default gateway is 172.25.1.252.

The default gateway in a network is the device that routes traffic from the local network to destinations outside of that network. In this case, the default gateway is identified as 172.25.1.252, which is the router's IP address.

A) 172.25.1.252

This option is correct as it represents the router's IP address, which serves as the default gateway for devices on the network. The default gateway is responsible for forwarding packets from the local subnet to external networks, making this option the right choice.

B) 172.25.1.39

This option is incorrect because 172.25.1.39 is the IP address assigned to a device on the network, not the gateway. While it is a valid IPv4 address within the subnet, it does not serve the function of routing traffic outside the local network.

C) 172.25.1.4

This option is also incorrect as 172.25.1.4 is identified as the name server's IP address. Although it plays a role in network operations, it does not act as the default gateway for routing traffic.

D) 255.255.255.0

This option is incorrect because 255.255.255.0 is the subnet mask. It defines the network's address space but does not serve as a gateway for routing purposes.

Conclusion

The correct answer, 172.25.1.252, is the default gateway that enables communication between the local network and other networks. The other options fail to fulfill this role, as they either represent a device's IP address or the subnet mask, which does not facilitate routing.