Cisco Certified Internetwork Expert (CCIE) Practice Test

In which scenario would a static IP address for a web server be preferable over a dynamic IP address?

1. Packet transfer rate is the priority

2. Server needs to be reliably reachable without DNS updates

3. Cost reduction in IP address allocation

4. When the server can handle DHCP lease renewals

The correct answer is: Server needs to be reliably reachable without DNS updates

A static IP address for a web server is preferable when the server needs to be reliably reachable without DNS updates. Having a static IP means that the address assigned to the web server does not change over time. This stability is critical for services that require a consistent endpoint, as frequent IP changes would necessitate constant updates to DNS records, potentially leading to downtime or access issues for users trying to reach the server. In scenarios where the server is critical for operations, such as hosting websites, applications, or databases, maintaining a static IP ensures that users can reliably access these services without interruption. This reliability is particularly important for enterprises that rely on the consistent connectivity of their web services. For the other scenarios: - Packet transfer rate would not directly be influenced by whether the IP address is static or dynamic, as both types can operate at similar speeds. - Cost reduction in IP address allocation may favor a dynamic approach, especially in environments where IP addresses can be reused. - If the server can handle DHCP lease renewals, a dynamic IP might be more efficient, as it allows for easier management of IP addressing in larger networks without requiring manual configuration for every endpoint.