Exam SC-900 topic 1 question 118 discussion

Box 1: Yes Security rules must have a unique name within the network security group (NSG) Box 2: No You can't remove the default rules, but you can override them by creating rules with higher priorities. Box 3: Yes Reference Network security groups https://learn.microsoft.com/en-us/azure/virtual-network/network-security-groups-overview

YNY is the answer. https://learn.microsoft.com/en-us/azure/virtual-network/network-security-groups-overview#security-rules Name - A unique name within the network security group. The name can be up to 80 characters long. It must begin with a word character, and it must end with a word character or with '_'. The name may contain word characters or '.', '-', '_'. https://learn.microsoft.com/en-us/azure/virtual-network/network-security-groups-overview#default-security-rules You can't remove the default rules, but you can override them by creating rules with higher priorities.

You can delete a custom security rule. You aren't allowed to delete a default security rule. https://learn.microsoft.com/en-us/azure/virtual-network/manage-network-security-group?tabs=network-security-group-portal#delete-a-security-rule

NSG default rules can be customised but not deleted

Correct

Correct https://docs.microsoft.com/en-us/azure/virtual-network/network-security-groups-overview