Free Cisco 300-420 Actual Exam Questions - Question 3 Discussion
DHCP services must be available.
Clients BIOS settings must be set for WoL.
Clients get IP addresses once online.
Spanning-tree PortFast is enabled on the Layer 2 switches.
Which two solutions must the customer select to have a successful deployment? (Choose two.) 3
A/D? Directed broadcast lets the magic packet reach clients on their subnet, and helper-address on client interfaces ensures DHCP requests get forwarded properly. B seems off since it talks about client ranges on WoL server side.
A/E makes sense since you either enable or disable directed broadcast; you can't do both.
I’m sticking with A and D too. IP directed broadcast has to be enabled on the client subnets so those Wake-on-LAN packets can actually get through, and the helper-address should be on the client subnet interfaces pointing towards the WoL server. B doesn’t seem right since helper-addresses generally help clients find servers, so putting it on the WoL server’s interface wouldn’t help clients’ DHCP requests. E and C are obviously wrong because disabling those features would block communication necessary for WoL to work at all.
I think A and D make the most sense here. You need IP directed broadcast on client subnets to get the WoL packets through, and helper-address on client interfaces so DHCP requests reach the WoL server.
Maybe A and D. Enabling IP directed broadcast lets the magic packet reach clients, and helper-address on client subnet interfaces forwards DHCP requests from clients to the WoL server. B seems off because helper-address usually points to a DHCP server, not client ranges.
Not sure about the difference between B and D here-does the helper-address go on the client subnet interface or the WoL server subnet? That bit’s kinda confusing to me.