Medium1 markMultiple Choice
Domain 4.4: Network SolutionsDomain 4.4Azure FirewallRouting
This question is part of a case study — click to read the full scenario(Case 51)

CASE STUDY: Contoso Ltd is a global financial services firm with 10,000 employees. They have a primary on-premises data center in London and a secondary in New York. They are migrating to Azure and require a hub-and-spoke network topology. Requirements: 1) Secure connectivity between on-premises and Azure with at least 5 Gbps throughput and redundancy. 2) Centralized inspection of all outbound internet traffic from spoke VNets. 3) Spoke VNets must communicate with each other securely. 4) PaaS services (Storage, SQL) must be accessed privately without traversing the public internet. 5) Web applications in spokes require WAF protection and global load balancing.

Question 1 of 5: To meet Requirement 1 (Secure connectivity with at least 5 Gbps throughput and redundancy), which hybrid connectivity solution should you recommend?

AZ-305 · Question 52 · Domain 4.4: Network Solutions

CASE STUDY: Contoso Ltd is a global financial services firm with 10,000 employees. They have a primary on-premises data center in London and a secondary in New York. They are migrating to Azure and require a hub-and-spoke network topology. Requirements: 1) Secure connectivity between on-premises and Azure with at least 5 Gbps throughput and redundancy. 2) Centralized inspection of all outbound internet traffic from spoke VNets. 3) Spoke VNets must communicate with each other securely. 4) PaaS services (Storage, SQL) must be accessed privately without traversing the public internet. 5) Web applications in spokes require WAF protection and global load balancing.

Question 2 of 5: To meet Requirement 2 (Centralized inspection of all outbound internet traffic), what should you deploy in the Hub VNet?

Answer options:

A.

Network Security Groups (NSGs) on every spoke subnet.

B.

Azure Firewall and User Defined Routes (UDRs) in the spokes.

C.

Azure Application Gateway.

D.

Azure Bastion.

How to approach this question

Identify the centralized security appliance and the routing mechanism to force traffic to it.

Full Answer

B.Azure Firewall and User Defined Routes (UDRs) in the spokes.✓ Correct
Azure Firewall and User Defined Routes (UDRs) in the spokes.
To centrally inspect outbound traffic, you deploy Azure Firewall in the Hub VNet and use User Defined Routes (UDRs) on the spoke subnets to route all internet-bound traffic (0.0.0.0/0) to the Firewall.

Common mistakes

Forgetting that UDRs are required to override the default Azure route to the internet.

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