Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements.
You are tasked with deploying a critical LOB application, which will be installed on a virtual machine, to Azure.
You are informed that the application deployment strategy should allow for a guaranteed availability of 99.99 percent. You need to make sure that the strategy requires as little virtual machines and availability zones as possible.
Solution: You include one virtual machine and two availability zones in your strategy.
Does the solution meet the goal?
Click on the arrows to vote for the correct answer
A. B.B
https://docs.microsoft.com/en-us/azure/availability-zones/az-overviewThe correct answers for this scenario are B. Modify a network security group (NSG) and D. Modify an Azure firewall.
Explanation: To make the virtual machine accessible from the internet over HTTP, we need to allow inbound traffic on port 80 (HTTP) through the Azure Network Security Group (NSG) and Azure Firewall.
Option A - Modify an Azure Traffic Manager profile: This option is not applicable in this scenario. Azure Traffic Manager is used for traffic routing and load balancing across multiple endpoints. It does not help in allowing inbound traffic on a specific port.
Option B - Modify a network security group (NSG): This is the correct solution as NSG is a security feature in Azure that filters inbound and outbound traffic based on rules. By modifying the NSG, we can allow inbound traffic on port 80 to reach the virtual machine named VM1.
Option C - Modify a DDoS protection plan: This option is not applicable in this scenario. DDoS protection plan is used to mitigate and prevent DDoS attacks on Azure resources. It does not help in allowing inbound traffic on a specific port.
Option D - Modify an Azure firewall: This is another correct solution as Azure Firewall is a managed, cloud-based network security service that provides inbound and outbound traffic filtering. By modifying the Azure Firewall, we can allow inbound traffic on port 80 to reach the virtual machine named VM1.
In summary, the correct answers for this scenario are B. Modify a network security group (NSG) and D. Modify an Azure firewall.
The solution mentioned in the question states that one virtual machine and two availability zones will be used for deploying a critical LOB (Line of Business) application to Azure, while ensuring a guaranteed availability of 99.99 percent. The question is whether this solution meets the stated goal or not.
An availability zone is a physically separate data center within an Azure region, with its own power, cooling, and networking infrastructure. The use of multiple availability zones ensures that even if one zone experiences a failure, the application can continue to run in another zone.
In this scenario, using two availability zones means that the application will have redundancy across two separate physical data centers within the same region. This helps to ensure that the application remains available in the event of a failure in one of the zones.
However, the use of only one virtual machine in this solution raises questions about whether it can provide sufficient redundancy to meet the requirement of 99.99 percent availability. If the virtual machine fails, the application will go down, regardless of the availability zones. Therefore, it is not clear if the use of one virtual machine alone can provide the necessary level of availability.
It is worth noting that there are different ways to achieve high availability in Azure, and the best solution will depend on the specific requirements of the application. In general, using multiple virtual machines in conjunction with multiple availability zones can provide a higher level of redundancy and availability than using only one virtual machine.
Based on the information provided in the question, it is not clear whether the solution meets the goal of ensuring a guaranteed availability of 99.99 percent with as few virtual machines and availability zones as possible. Therefore, the answer to this question is B. No.