Exam 70-741 topic 1 question 127 discussion

Actual exam question from Microsoft's 70-741

Question #: 127
Topic #: 1

Note: This question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series. Information and details provided in a question apply only to that question.
Your network contains Windows and non-Windows devices.
You have a DHCP server named Server1 that has an IPv4 scope named Scope1.
You need to prevent a client computer that uses the same name as an existing registration from updating the registration.
What should you do?

A. From the properties of Scope1, modify the Conflict detection attempts setting.
B. From the properties of Scope1, configure Name Protection.
C. From the properties of IPv4, configure the bindings.
D. From IPv4, create a new filter.
E. From the properties of Scope1, create an exclusion range.
F. From IPv4 run the DHCP Policy Configuration Wizard.
G. From Control Panel, modify the properties of Ethernet.
H. From Scope1, create a reservation.

Show Suggested Answer

Suggested Answer: B 🗳️

by coleman at Nov. 10, 2019, 3:15 a.m.

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coleman

Highly Voted 5 years, 7 months ago

Explanation/Reference: https://blogs.technet.microsoft.com/teamdhcp/2009/01/29/what-is-name-protection/ Name Protection is based on the DHCID support to the DHCP server, and support for the new DHCID RR (Resource Record) to Microsoft DNS. In addition, support for DUID will be added to the IPv4 registration on the DHCP client. Therefore DHCID is a resource record stored in DNS like other RRs. This RR is intended to be used by DHCP to store an identifier for a machine, along with other information for the name such as a machine’s A/AAAA records. DHCID effectively provides a mapping to determine if a name has already been assigned, and if the address of the machine assigned to the name is the same as the machine requesting registration with this name. DHCP’s unique position in the name registration process allows it to request this match, and then refuse the registration of a machine with a different address attempting to register a name with an existing DHCID record. Prevents the following name squatting situations: - Server name squatting by a client - Server name squatting by another server - Client name squatting by another client - Client name squatting by a server

upvoted 7 times

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Kashgar

Most Recent 4 years, 10 months ago

The is a DNS tab under the scope properties. In there you can enable name protection. it works for both windows and non-windows devices by adding, modifying A and PTR records.

upvoted 1 times

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Nhan

5 years, 4 months ago

this statement: "prevent a client computer that uses the same name as an existing registration from updating the registration" is the key so logically C is correct answer

upvoted 1 times

SmackedWookiee

5 years, 4 months ago

The answer is B, not C. Here's some info: https://www.itprotoday.com/windows-server/q-what-dhcp-name-protection-windows-server-2008-r2

upvoted 4 times

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[Removed]

5 years, 3 months ago

C refers to DHCP, this question is about the DNS registration.

upvoted 3 times

V1980

4 years, 7 months ago

Binding is also telling the role which NIC to use, which is definitely not needed in this scenario

upvoted 1 times

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