Q75IP Connectivity
Refer to the exhibit. After applying the shown configuration to a router, DHCP clients behind the device are unable to communicate with hosts outside their subnet. Which action is most likely to fix the problem?
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Discussion · 14
15
Answer is correct, because the question is "Which action is most likely to correct the problem?"
That means the given set of commands is missing something.
Since when we configure a DHCP server on a router:
conf t
service dhcp
ip dhcp pool <pool name>
network <network address of the pool>
default-router <ip address of the interface facing the hosts, or ip adress of the interface facing downstream clients>
dns-server <ip address of dns-server>
exit
4
why not C? i am a beginner, but I also know that you should put the "subnet mask" not the "/27", wouldnt it become and error?
2
D is more right but arguably A could be right too
2
I know the answer is D, but we can't put de mask for network in CIDR right?
2
This is for configuring it directly on the equipment. We need the DHCP server to pass the information to it.
2
The DNS sever does not need to be on the same subnet as your clients. You can double check this by going into your network settings and changing DNS to 1.1.1.1 or 8.8.8.8. You can compare the before and after results with ipconfig /all in command prompt. Typically your default DNS server on your local network is your default gateway on SOHO routers but your SOHO router will send that DNS query up to the ISP and typically one of their DNS servers will answer your DNS query. Remember your router is typically getting DHCP information from the ISP as well.
1
Isn't configuring the default gate this command?:
SW1(config)# ip default-gateway 192.168.10.1
1
It's possible, but without more info you'd have to make an assumption whereas, with D there is clearly a default gateway missing.
1
Correct, you can't enter a subnet mask in CIDR notation as shown in this question.
1
D. Configure the default gateway
1
THE (DHCP#) DEFAULT-ROUTER IS MISSING FROM THE EXHIBIT
1
Be careful, To define a default gateway (router) when IP routing is disabled, use the ip default-gateway global configuration command.
1
This is different from DHCP configuration.
1
and how would the default gateway ip address look in the given questions output?