Increase DHCP Server Reliability

D.

The correct answer is D. Install redundant NICs.

DHCP (Dynamic Host Configuration Protocol) is a network protocol that automatically assigns IP addresses and other network configuration information to devices on a network. DHCP servers play a crucial role in the network infrastructure, and any downtime can result in significant disruptions.

One way to increase the reliability of a DHCP server is to install redundant network interface cards (NICs). Redundant NICs provide backup interfaces in case of a primary NIC failure. If the primary NIC fails, the backup NIC takes over, ensuring uninterrupted network connectivity.

Increasing the amount of RAM will not directly affect the reliability of the DHCP server, but it can improve the server's performance by allowing it to handle more client requests simultaneously.

Using a lower voltage power supply is also not directly related to the DHCP server's reliability. Still, it can help reduce the server's power consumption and heat output, which can indirectly improve the server's performance and lifespan.

Adding a hardware firewall can help improve network security, but it will not necessarily increase the DHCP server's reliability. Firewalls are designed to monitor and filter incoming and outgoing network traffic, which can help prevent unauthorized access and malicious attacks. However, a firewall will not protect against hardware failures or network connectivity issues.

In summary, installing redundant NICs is the best way to increase the reliability of a DHCP server. Other measures, such as increasing RAM or using a lower voltage power supply, can indirectly improve server performance, but they are not specific to DHCP server reliability.