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Question

You have a server named Server1 that runs Windows Server and has the DHCP Server role installed. Server1 contains the following single scope:

• Scope: 192.168.16.0
• Address pool: 192.168.16.1-192.168.16.254
• Subnet mask: 255.255.255.0
• Lease duration: 8 days

You have four testing devices that are configured with static IP addresses as shown in the following table.

Image removed.

The test devices are turned on once a month.

You need to prevent Server1 from assigning the IP addresses allocated to the test devices to other devices when the test devices are offline. The solution must minimize administrative effort.

What should you do?

Proposed answer
  • A. Create a policy.
  • B. Create reservations.
  • C. Configure the Scope options.
  • D. Create an exclusion range.

 

Correct answer
  • D. Create an exclusion range.

 

Comments

 

egdeeptha

3 months ago 

Selected Answer: D

Static IPs need to be excluded. If it was a DHCP client which needs to get the same IP over and over again when the lease expires reservations is the answer. But in this case EXCLUSIONS :)

upvoted 2 times 

sardonique

3 months, 1 week ago 

did it myself for many customers, you need to configure exclusions. Reservations are meant to statically assign IP based on mac address (so that whenever the host begs for an IP address, the DHCP server will always assign the same IP to that host)

upvoted 2 times 

SIAMIANJI

6 months, 3 weeks ago 

Selected Answer: D

You need to exclude static IPs. Reservation are for DHCP assigned IPs.

upvoted 2 times 

6de0f77

8 months, 3 weeks ago 

Selected Answer: D

A reservation is for a DHCP request. A exclusion for fixed IP.

upvoted 3 times 

SanMan_NZ

9 months, 3 weeks ago 

Selected Answer: D

An exclusion is required to ringfence IP's from DHCP Lease pool as they are static IPs. A reservation ties a leased IP to a constant MAC via DHCP control allowing perpetual fixed lease of IPs to the same servers.

upvoted 2 times 

freddyy

11 months, 4 weeks ago 

Selected Answer: B

D is wrong because you have to create *two* exclusions .242/31 and .244/31 If you make reservations DHCP won't lease those addresses. Though VMs wont use DHCP beacuse they have static IPs, but this solution works. B

upvoted 3 times 

dolphan904

11 months, 1 week ago 

What are you talking about?? The IPs are in sequence on the 192.168.16/24 network. One exclusion works just fine by putting 242 as the first IP and 245 as the last IP with a mask of /24. Exclusion is the right answer as the servers have STATIC IPs which means they will not require DHCP leases for anything. RESERVATION would be correct only if they did require the leases against the same IP all the time which in this case they do not as explained before.

upvoted 6 times 

freddyy

11 months, 4 weeks ago 

I'm not right, delete :)

upvoted 3 times 

Armoonbear

1 year ago 

Selected Answer: D

Create a exclusion range to prevent DHCP from handing out addresses between 192.168.16.242 - 192.168.16.245

upvoted 3 times 

windowsmodulesinstallerworker

1 year, 1 month ago 

Selected Answer: D

since the devices are configured with static ip addresses which are defined on the network adapter of the devices, not by DHCP you should create an exclusion range which prevents the DHCP server to assign those IPs to other devices.

upvoted 4 times 

FM221228

1 year, 1 month ago 

Wrong! The test devices have static IP addresses and thus reservations won't work. You must use an exclusion range.

upvoted 4 times