The DHCP relay agent itself does not assign anything locally or otherwise DNS or otherwise, so A is incorrect. It does minimize the number of DHCP servers because it means we don't need a DHCP server on every subnet, so B is correct. You actually can configure more than one IP helper command under an individual Layer 3 interface, so C is incorrect and D is correct.
Which of the following are functions of a DNS Server? (Choose two)
1. Stores a list of IP addresses mapped to names
2. Assigns a default gateway to a client
3. Resolves web URLs to IP addresses
4. Holds the TCP/IP settings to be distributed to the clients
5. Assigns IP addresses to enabled clients
he DHCP relay agent is typically configured under the Layer 3 interface of a router on the client subnet.
To clarify, when you configure a DHCP relay agent on a router, you associate it with the Layer 3 interface that is connected to the client subnet. This router interface is responsible for receiving DHCP broadcast requests from clients on that subnet and forwarding those requests to the DHCP server, which is typically located in a different subnet.
relay agent allows you to configure only one IP helper (also known as IP helper-address) command under an individual Layer 3 interface. The IP helper-address command is used to specify the IP address of the DHCP server or other services that are available on a different subnet.
A DHCP relay agent can help minimize the necessary number of DHCP servers in a network. In scenarios where multiple subnets exist and clients in those subnets need IP configuration from a central DHCP server, using a DHCP relay agent can reduce the need for deploying DHCP servers in every subnet.
Letter C is wrong because in only 1 (one) interface of the L3 device (router, L3 switch) we can configure more than 1 (one) "ip help-address" command Example: (config-if)#ip helper-address 10.10. 10.51 - (config-if)#ip helper-address 10.10.10.52 (on the same interface). From what I understand, this is pretty common to get redundancy between DHCP servers for workstation, although it has some implications.
https://community.cisco.com/t5/other-network-architecture-subjects/ip-helper-address-with-two-dhcp-server/td-p/260792
The feature describes the subject matter, while the benefit is the elaboration based on the feature.
Option B seems to be a benefit rather than a feature
Option C does not say we can only configure one IP helper command, so it is kinda correct, it is also a feature
Option D is a feature.
I would choose C and D. Correct me if I'm wrong.
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