Your network contains an Active Directory domain named contoso.com. The domain
contains a member server named Server 1.Server1 runs Windows Server 2012 R2 and has
the DHCP Server server role installed.
You create two IPv4 scopes on Server1. The scopes are configured as shown in the following table.
The DHCP clients in Subnet_Tor can connect to the client computers in Subnet_Mtl by using
an IP address or a FQDN. You discover that the DHCP clients in Subnet_Mtl can connect to
client computers in Subnet_Tor by using an IP address only.
You need to ensure that the DHCP clients in both subnets can connect to any other DHCP
client by using a FQDN.
What should you add?
A.
The 006 DNS Servers option to Subnet_Mtl
B.
The 006 DNS Servers option to Subnet_Tor
C.
The 015 DNS Domain Name option to Subnet_Mtl
D.
The 015 DNS Domain Name option to Subnet_Tor
D
No, name resolution isn’t happening in Subnet_Mtl, which implies DHCP isn’t assigning a DNS server. Correct answer is as listed.
What about C ?
as per https://technet.microsoft.com/en-us/library/ee941136(v=ws.10).aspx
Issue :
The DNS domain option (option 15) is not configured for one or more scopes.
Impact:
DHCP IPv4 clients will not be provided with a DNS domain and will not be able to resolve names.
Resolution:
Configure a DNS domain option as a server or scope option using the DHCP MMC.
As far as the difference between options 006 and 015, from
https://social.technet.microsoft.com/Forums/lync/en-US/580ffe3d-7e5f-4942-81bc-3284d9612716/difference-between-006-dns-servers-and-015-dns-domain-name?forum=winserveripamdhcpdns
Option 006 DNS servers = IP Address of your DNS Server, e.g, 10.10.10.1
Option 015 DNS Domain Name = test.local, your domain name
subnet_tor’s clients have the ability to resolve DNS names because their scope has (answer B – the DNS servers) filled in.
Subnet_MTL cannot resolve anything but can reach the other scope by IP.
Therefore if you give subnet MTL the DNS servers of their scope – they should be able to resolve names as well.
So A is correct 🙂
003 – Default router IP address for client to use
004 – Time server to assign to client
006 – DNS Name server to provide to client
015 – DNS Domain name
044 – WINS server to provide to client
046 – WINS Node type
the answer is A
The DNS server option tells the system what the IP address of the DNS server is…..this Is the system that it will use for Name Resolution.
The DNS Domain Name option is used if a client only uses the first name of a system (lon-cl1) as opposed to Lon-cl1.adatum.com.
There’s no mention that the clients are part of the domain. When the clients are in the domain it’s definitely A. But you still can argue about D (Not C as mtl can’t reach tor when tor hasn’t be registered in DNS). That would also require to check “allow insecure DHCP updates” btw.
So another crappy question that probably must be answered with A.
dns updates that is 🙂
Ok guys the best way to explain something complicated is to explain it as simple as possible. Here is what I got.
First, both subnets scopes are in The domain Named Server1. So that means you can right away cancel out C. and D. since they are both in the same Domain they will both have the same name, so it wont make sense to change it.
Second, Since Subnet_Tor is able to access both the IP address and FQDN from Client Computer in Subnet_Mtl that means it is working correctly.
So your left with A as the answer.
Hope this helps and clarifies a bit
Cheers 😀