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Exam 70-741 topic 1 question 67 discussion

Actual exam question from Microsoft's 70-741

Question #: 67
Topic #: 1

You have a DHCP server named Server1.
Server1 has an IPv4 scope that contains 100 addresses for a subnet named Subnet1. Subnet1 provides guest access to the Internet. There are never more than
20 client computers on Subnet1 simultaneously; however, the computers that connect to Subnet1 are rarely the same computers.
You discover that some client computers are unable to access the network. The computers that have the issue have IP addresses in the range of 169.254.0.0/16.
You need to ensure that all of the computers can connect successfully to the network to access the Internet.
What should you do?

A. Create a new scope that uses IP addresses in the range of 169.254.0.0/16.
B. Modify the scope options.
C. Modify the lease duration.
D. Configure Network Access Protection (NAP) integration on the existing scope.

Show Suggested Answer

Suggested Answer: C 🗳️

by fener at Aug. 18, 2019, 11:12 a.m.

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dan

Highly Voted 5 years, 8 months ago

if the lease duration is too long then all of the leases get eaten up. The fact that the IP addresses are 169.x.x.x means they are internal or windows self signing addresses

upvoted 12 times

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Jake__

Highly Voted 5 years, 2 months ago

You want to change lease duration to about a day for this. If a guest from 6 days ago still has a lease, and you have 20 guests a day. Then you would need 120 ips before they clear out... The answer is correct.

upvoted 6 times

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panda

Most Recent 4 years, 4 months ago

I thinki C is correct. After you performe C, you perform B. https://www.serverlab.ca/tutorials/windows/network-services-windows/step-step-creating-windows-server-dhcp-scope/

upvoted 1 times

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lofzee

4 years, 4 months ago

Answer is C. Default lease period on a scope is 8 days. If they have on average, 20 different computers a day, it wouldn't take long before all 100 addresses got used up, 5 days, to be precise. Shortening the lease duration to something like 1 day would resolve this issue

upvoted 1 times

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elopez2207

4 years, 5 months ago

I think this question is similar to the one below and the suggested answer for me is D because the answer is related to “modify the lease duration”. ANSWER IS D) Run Set -DhcpServerv4Scope -Name Mobile -LeaseDuration 0.02:00:00. Similar Question: https://drive.google.com/file/d/16TeFKYooRDrzZp1JK7-b1Z_OmE7RuLqD/view?usp=sharing With respect to this question in examtopics, the answer is C)Modify the lease duration.

upvoted 1 times

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JCSantana20

4 years, 8 months ago

My problem with this question is that it says "SOME computers". If the addresses in the scope are exhausted, all new computers connected to the network will not obtain IPs, only the ones that have a lease already. Given that computers coming to the network are RARELY the same, if the problem is with lease duration, not only SOME computers will have the issue of not getting an IP, but MOST computers. Regardless, that is the most plausible option, but how they framed it is wrong!

upvoted 1 times

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algerianphoenix

4 years, 9 months ago

Correct Answer C. Since the computers are in a transit zone, no need to give along lease duration, and from the answers, answer C is the best suited for the situation.

upvoted 1 times

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rjc

5 years, 3 months ago

The question states: There are never more than 20 client computers on Subnet1 simultaneously; however, the computers that connect to Subnet1 are rarely the same computers. Shorten (modify) the lease duration if the computers on subnet1 are rarely the same! You will have more lease available!

upvoted 5 times

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Nhan

5 years, 3 months ago

the statement is the computers connnect to the DHCP server is rarely the same, which mean the DHCP server could hold the lease for more than the time its need for example 8 days, so shorten the lease time will take care the issue. example 4 days which is 4*20 *80 the dhcp have 100 addresses that would take care the problem

upvoted 2 times

Ant0ny

5 years, 3 months ago

Doesnt make sense "You discover that SOME client computers are unable to access the network. The computers that have the issue have IP addresses in the range of 169.254.0.0/16." suggests that other client computers not on that IP range are fine..

upvoted 1 times

TA77

4 years, 8 months ago

Address in the range 169.254.x.x is an APIPA address, which is an special address that Windows assign to the device when the device cannot require an IP address from DHCP.

upvoted 3 times

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fener

5 years, 8 months ago

why C? it states that the computers are rarely the same, so it cannot be the lease duration...

upvoted 1 times

Anton2020

5 years, 4 months ago

The lease duration must now be very high, which means that the devices who get an IP keep it for a long time. Even though the computer might not be used, the IP remains leased.

upvoted 12 times

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Exam 70-741 All Questions

View all questions & answers for the 70-741 exam

Exam 70-741 topic 1 question 67 discussion

Comments

dan

Jake__

panda

lofzee

elopez2207

JCSantana20

algerianphoenix

rjc

Nhan

Ant0ny

TA77

fener

Anton2020

SY0-701