Question 19

DHCP should be configured first.

Configuring DHCP (Dynamic Host Configuration Protocol) first is essential as it automates the assignment of IP addresses to devices on the network, ensuring efficient management of network resources.

A) DHCP

This option is correct because setting up DHCP allows devices on the network to automatically receive IP addresses, simplifying network management and reducing the risk of IP address conflicts. It is a foundational step that enhances the overall efficiency of the network configuration.

B) UPnP

UPnP (Universal Plug and Play) is used for allowing devices to discover each other on the network and establish functional network services. However, it is not essential to configure UPnP before establishing IP address assignment through DHCP. Thus, it is not the first priority compared to DHCP.

C) MAC filtering

MAC filtering is a security feature that allows or denies devices based on their MAC addresses. While it is important for network security, it should be configured after establishing basic connectivity with DHCP to ensure devices can connect to the network first.

D) VPN

A VPN (Virtual Private Network) setup is crucial for secure remote access but is not a foundational setting for a local network. Configuring a VPN depends on having a stable network with devices that can communicate, which is facilitated by DHCP.

Conclusion

In summary, configuring DHCP first is critical for establishing a functional network by automating IP address assignments. Other options, such as UPnP, MAC filtering, and VPN, are valuable but can only be effectively implemented once the basic network infrastructure is in place through DHCP.