Dynamic Host Configuration Protocol (DHCP)

Correct Answer: Restore backups of the DHCP database

The immediate necessary step in this scenario is to 'restore backups of the DHCP database.' DHCP, or Dynamic Host Configuration Protocol, scopes and servers are vital for network operations as they automatically provide devices with IP addresses. If they are deleted, the devices on the network will not be able to communicate effectively. Therefore, restoring backups is the quickest and most straightforward method to get the network operating normally again. The other options such as 'creating a new DHCP scope with a larger subnet,' does not immediately resolve the issue and would be a more time-intensive process. Similarly, 'disabling all switches and routers' would only worsen the situation, not resolve it, as it disrupts network communication even further. Lastly, 'configuring all clients with static IP addresses' would not be a feasible solution because this would be a very time-consuming process, and it wouldn't restore the benefits of automatic IP address assignment provided by DHCP.

Correct Answer: DHCP service is not enabled on the new router

The Dynamic Host Configuration Protocol (DHCP) service is required for automatically assigning IP addresses to devices on a network. If the DHCP service isn't enabled on the new router, then devices won't be given an IP address, which seems to align with the issue presented. The other possible answer, 'New router is also acting as a switch,' is incorrect because even if the router is acting as a switch, it should still be able to assign IP addresses if DHCP is enabled. The 'Mismatched subnet masks between devices' option is incorrect because while this could lead to network issues, it does not generally prevent devices from receiving an IP address. The 'New router using a static IP address' answer is also wrong since a router can have a static IP and still distribute IP addresses to devices if DHCP is enabled.

Correct Answer: Configure each DHCP server with non-overlapping scopes

The best solution for the presented issue in the network is to 'Configure each DHCP server with non-overlapping scopes'. DHCP servers with overlapping IP address scopes can cause conflicts, as two or more clients may receive the same IP address, leading to network performance issues. By configuring each DHCP server with different, non-overlapping IP address scopes, each client will receive a unique IP address, avoiding conflicts and enhancing network performance'Removing one DHCP server and replacing it with a DNS server' is incorrect because DHCP and DNS servers perform different functions. DHCP assigns IP addresses to network devices, whereas DNS translates domain names to IP addresses'Enabling DHCP snooping to resolve IP conflicts' would not necessarily resolve the issue. DHCP snooping is a security feature that protects against malicious DHCP servers, not IP address conflicts in legitimate servers'Disabling DHCP on one server and letting clients use static IP addresses' is not a practical solution. While it would ensure no IP conflicts, it puts more burden on network administration as each client device's IP configuration would have to be managed individually.