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Exam AZ-500 topic 13 question 3 discussion

Actual exam question from Microsoft's AZ-500

Question #: 3
Topic #: 13

HOTSPOT -
You are evaluating the effect of the application security groups on the network communication between the virtual machines in Sub2.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer

Suggested Answer:

Box 1: No. VM4 is in Subnet13 which has NSG3 attached to it.
VM1 is in ASG1. NSG3 would only allow ICMP pings from ASG2 but not ASG1. Only TCP traffic is allowed from ASG1.
NSG3 has the inbound security rules shown in the following table.

Box 2: Yes.
VM2 is in ASG2. Any protocol is allowed from ASG2 so ICMP ping would be allowed.
Box3. VM1 is in ASG1. TCP traffic is allowed from ASG1 so VM1 could connect to the web server as connections to the web server would be on ports TCP 80 or
TCP 443.

by barchetta at Feb. 10, 2020, 4:22 p.m.

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barchetta

Highly Voted 5 years, 4 months ago

q1: dont forget ping is not tcp.. I know better but forgot.

upvoted 53 times

swip

5 years, 1 month ago

lol, I was about to kick off, until I read your comment. Face palmed myself and thought I'm an idiot, I also know better

upvoted 6 times

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Stuudent

4 years, 6 months ago

Well excuse me...: Verifies IP-level connectivity to another TCP/IP computer by sending Internet Control Message Protocol (ICMP) echo Request messages. The receipt of corresponding echo Reply messages are displayed, along with round-trip times. ping is the primary TCP/IP command used to troubleshoot connectivity, reachability, and name resolution. Used without parameters, this command displays Help content. and This command is available only if the Internet Protocol (TCP/IP) is installed as a component in the properties of a network adapter in Network Connections. https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ping sounds to me like icmp is operating within TCP and therefore the answer to Q1 should be YES in my opinion.

upvoted 2 times

ckochhar

4 years, 4 months ago

No ICMP itself is a protocol just like TCP, UDP. Dont confuse them with ports, hence it does not fall under TCP.

upvoted 10 times

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rawrkadia

3 years, 10 months ago

Test this in Azure and you'll see that its wrong. Allow TCP does not allow ICMP (or UDP), the NSG rules are protocol specific and ICMP is its own protocol.

upvoted 1 times

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gills

4 years, 6 months ago

ICMP is a network-layer protocol. There is no TCP or UDP port number associated with ICMP packets as these numbers are associated with the transport layer above. So comparing to HTTP, which has a port 80 or 443 , there for the underlying protocol tcp is mapped to that protocol as well. ICMP is different. SS

upvoted 8 times

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AAAAAks

2 years, 3 months ago

missed that there is rule with 200 priority which will not allow any communication.. Ignore my query above.

upvoted 1 times

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asdf12345a

Highly Voted 4 years, 3 months ago

Answer is correct - No, Yes, Yes. You cannot ping the private address of VM4. VM4 is in ASG1 connected to Subnet13 that is associated with NSG3. NSG3 allows only allows TCP from ASG1 and ICMP is not TCP, therefore the answer is no. From VM2, you can ping the private IP address of VM4 as NSG3 allows inbound connections on any protocol from ASG2. From VM1, you can connect to the web server on VM4 as NSG3 allows all TCP connections from ASG1 to ASG1, and both VM1 and VM4 are in ASG1.

upvoted 26 times

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Sabr_

Most Recent 2 months, 1 week ago

Exam question 6th April 2025

upvoted 2 times

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Sabr_

2 months, 1 week ago

Exam question 6th April 2025

upvoted 1 times

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schpeter_091

7 months, 1 week ago

Just wanna add my own experience to question 1: I just tested it with public IP, but: When you create a new inbound rule in NSG, there is an option to create ICMPv4 rule and set it to allow. Also, on the server you wanna ping , set the rule Echo Request – ICMPv4-In to allow.

upvoted 1 times

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saira23

11 months ago

In Exam20/07/2024

upvoted 2 times

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RemmyT

1 year, 1 month ago

Passed. Exam duration 100 min + 20. On the Microsoft site: https://learn.microsoft.com/en-us/credentials/certifications/azure-security-engineer/?practice-assessment-type=certification You will have 100 minutes to complete this assessment. Last Updated 04/30/2024 55 questions (46+9) contoso, 6 questions This question in exam (study case) My answer N Y N New 3 or 4 questions VM1, SQL1, VNET1, AKS in Google Cloud. What items are protected by Microsoft Defender & default period scan.

upvoted 1 times

RemmyT

1 year, 1 month ago

Sorry: N Y Y

upvoted 1 times

dc864d4

1 year ago

Sorry: Pings use a different protocol than TCP NYN.... goodbye

upvoted 1 times

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Ivan80

1 year, 4 months ago

In exam 1/28/24

upvoted 3 times

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azure_2563

1 year, 7 months ago

ANSWER: NO- PROTOCOL IS TCP that is why YES YES

upvoted 2 times

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_punky_

1 year, 8 months ago

answer is correct

upvoted 1 times

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TheProfessor

1 year, 8 months ago

Answers are correct. TCP and ICP are NOT same.

upvoted 2 times

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AzureAdventure

1 year, 8 months ago

Tips : "You can connect" means via protocol(TCP) - communication with acknowledge flags etc. "Ping" is not TCP protocol. This is ICMP (Internet Control Message Protocol) - Just control :)

upvoted 1 times

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