Exam AZ-700 topic 2 question 36 discussion

Actual exam question from Microsoft's AZ-700

Question #: 36
Topic #: 2

SIMULATION
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Username and password
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Use the following login credentials as needed:

To enter your username, place your cursor in the Sign in box and click on the username below.

To enter your password, place your cursor in the Enter password box and click on the password below.

Azure Username: [email protected]

Azure Password: xxxxxxxxxx
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If the Azure portal does not load successfully in the browser, press CTRL-K to reload the
portal in a new browser tab.

The following information is for technical support purposes only:

Lab Instance: 12345678
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You need to ensure that subnet 4-3 can accommodate 507 hosts.

To complete this task, sign in to the Azure portal.

Show Suggested Answer

Suggested Answer:

by Sein at Aug. 21, 2023, 7:36 p.m.

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mabalon

Highly Voted 1 year, 3 months ago

/23 can fit 507 addresses. 512 hosts - 5 reserved = 507. The reserved ip address are .0 .1 .2 .3 and .255

upvoted 10 times

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Nagachn

Most Recent 3 weeks, 6 days ago

How do we know which vnet subnet4-3 belongs to? because we can't directly go to the subnets 4- 3. First navigate to the vnet and then choose the subnets

upvoted 1 times

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NahIgotPride

1 year, 1 month ago

Correct X.X.1.0/23 would be X.X.0.0 - X.X.1.255 (507 + 5 Azure reserved addresses)

upvoted 1 times

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Techbiz

1 year, 2 months ago

We need to borrow 9 host bits from the host bit and assuming that the default address space was a /16 CIDR, then we will need (2^9 - 5) to give us 507 ip address which is a /23

upvoted 1 times

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Sein

1 year, 3 months ago

/23 subnet won't be able to have 507 hosts, as azure reserves 5 IP addresses. You need /22 subnet.

upvoted 4 times

VeryOldITGuy

10 months, 3 weeks ago

Weird that MS says that if you create a /23, you get 507 + 5 Azure reserved addresses. x.x.0.0 to x.x.1.255 makes 510 IP addresses total in my calculator and even on calculator sites. Remove 0 at the beginning, 255 at the end and you are left with 508, then remove .1, .2 and .3 that Azure take and that leaves you 505. Where does the 507 come from?

upvoted 2 times

cda26aa

7 months, 1 week ago

2^9= 512 512-5 = 507

upvoted 1 times

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