SK0-004 · Question #316
A company has a corporate office building that is used by 50 to 100 unique visitors each day for meetings. Users routinely report that they are unable to access the network with their laptops when…
The correct answer is D. Reduce the lease duration in the DHCP scope options to one day. Reducing the DHCP lease duration is the long-term fix because it causes visitor addresses to return to the pool faster, preventing exhaustion as users cycle in and out each day.
Question
A company has a corporate office building that is used by 50 to 100 unique visitors each day for meetings. Users routinely report that they are unable to access the network with their laptops when visiting this location. The help desk reports that these users are not getting IP addresses automatically assigned. After an investigation, the server administrator has determined that the DHCP service is functioning, but a minimal number of addresses are available for lease. The building is on its own class C subnet and has 250 addresses in the scope. Which of the following represents a long term solution tothe problem?
Options
- AManually delete address leases from DHCP.
- BCreate reservations in DHCP for users frequently visiting this location.
- CAssign static IP addresses to visiting laptops.
- DReduce the lease duration in the DHCP scope options to one day.
How the community answered
(19 responses)- A11% (2)
- B16% (3)
- C5% (1)
- D68% (13)
Why each option
Reducing the DHCP lease duration is the long-term fix because it causes visitor addresses to return to the pool faster, preventing exhaustion as users cycle in and out each day.
Manually deleting leases requires ongoing administrator action and does not scale as a permanent solution because the pool will exhaust again the next day.
Creating DHCP reservations permanently ties addresses to specific MAC addresses, reducing the available pool size and worsening exhaustion rather than freeing up addresses.
Assigning static IP addresses to visiting laptops is operationally impractical for 50 to 100 rotating users and does not provide a mechanism to reclaim addresses when users leave.
Shortening the lease duration to one day ensures that IP addresses assigned to visiting laptops are reclaimed within 24 hours after those devices leave, continuously cycling addresses back to the available pool. This self-corrects without administrator intervention and scales with the daily visitor volume of 50 to 100 users. It directly addresses the root cause - addresses being held longer than the visitor cycle - rather than treating symptoms.
Concept tested: DHCP lease duration tuning to resolve pool exhaustion
Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/dhcp/dhcp-top
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