AZ-305 Design infrastructure solutions Practice Test 2 — 15 Questions

Question 1

A company plans to deploy a stateless web application on Azure virtual machines. They want to ensure that the application remains available in the event of a hardware failure within a single Azure datacenter. The VMs must be placed in a way that ensures they are on different physical servers and racks, but are still within the same datacenter. Which deployment strategy should they use?

Accepted Answer

Deploy the VMs in an Availability Set.. An Availability Set ensures that VMs are distributed across multiple fault domains (different physical servers, racks, and network switches) and update domains within a single Azure datacenter. This protects against hardware failures in that datacenter by guaranteeing that not all VMs are affected by the same local failure, while keeping them in the same datacenter for low-latency communication.

Answer

Deploy the VMs in different Availability Zones.

Answer

Deploy the VMs in a single Virtual Machine Scale Set with a large instance count.

Answer

Deploy each VM in a separate resource group.

Question 2

A company is deploying a web application that must be accessible from the internet. The application is hosted on Azure virtual machines in a virtual network. The solution must provide SSL termination, web application firewall (WAF) protection, and URL path-based routing (e.g., /api/* to one backend pool, /app/* to another). The web tier must not be directly exposed to the internet. Which Azure load balancing solution should they use?

Accepted Answer

Azure Application Gateway v2. Azure Application Gateway v2 is the correct choice because it is a Layer 7 load balancer that provides SSL termination, a web application firewall (WAF), and URL path-based routing. It can route traffic to different backend pools based on URL paths (e.g., /api/* and /app/*) while keeping the web tier isolated within the virtual network, as the gateway itself is exposed to the internet.

Answer

Azure Front Door

Answer

Azure Load Balancer

Answer

Azure Traffic Manager

Question 3

A company has an on-premises data center and wants to connect it to Azure to extend their network. They require a dedicated, private, high-bandwidth connection that is not routed over the public internet. They also want a lower-cost backup connection for redundancy in case the primary connection fails. Which combination of connectivity options should they implement?

Accepted Answer

ExpressRoute as the primary connection and a Site-to-Site VPN as the backup connection.. ExpressRoute provides a dedicated, private, high-bandwidth connection that bypasses the public internet, meeting the primary requirement. A Site-to-Site VPN over the internet serves as a cost-effective backup path for redundancy, as it uses encrypted tunnels over the public internet without the recurring costs of a second ExpressRoute circuit.

Answer

Two ExpressRoute circuits from different service providers, both active.

Answer

Site-to-Site VPN as the primary connection and Point-to-Site VPN as the backup.

Answer

Azure VPN Gateway with active-passive mode and a second VPN Gateway for failover.

Question 4

A company deploys a web application on Azure VMs across multiple availability zones in a region. They need to distribute incoming traffic across VMs in all zones, maintain session persistence, and support SSL offloading and URL-based routing (e.g., /api/* to one pool, /app/* to another). Which Azure load balancing solution should they use?

Accepted Answer

Azure Application Gateway. Azure Application Gateway is the correct choice because it is a Layer 7 (HTTP/HTTPS) load balancer that supports SSL offloading, URL-based routing (e.g., /api/* and /app/* to different backend pools), and session persistence (cookie-based affinity). It can distribute traffic across VMs in multiple availability zones within a region, meeting all stated requirements.

Answer

Azure Load Balancer

Answer

Azure Traffic Manager

Answer

Azure Front Door

Question 5

A company has multiple Azure VNets deployed in a hub-spoke topology. They want to inspect all outbound internet traffic from spoke VMs using a central firewall and ensure that traffic from all VNets goes through the firewall before reaching the internet. They also need to log all outbound connections. Which architecture should they implement?

Accepted Answer

Deploy Azure Firewall in the hub VNet and configure a default route (0.0.0.0/0) in each spoke's route table pointing to Azure Firewall as the next hop. Option B is correct because Azure Firewall is a managed, stateful firewall-as-a-service that can centrally inspect and log outbound internet traffic. By deploying Azure Firewall in the hub VNet and configuring a default route (0.0.0.0/0) in each spoke's route table with the Azure Firewall private IP as the next hop, all outbound traffic from spoke VMs is forced through the firewall before reaching the internet. This satisfies both the inspection and logging requirements, as Azure Firewall provides built-in outbound connection logging via diagnostic settings.

Answer

Deploy network virtual appliances (NVAs) in each spoke VNet and configure user-defined routes (UDRs) to route internet traffic to the NVAs

Answer

Use Azure Application Gateway with Web Application Firewall (WAF) in the hub VNet to inspect all traffic

Answer

Deploy Azure Firewall in each spoke VNet and use Azure Monitor to aggregate logs

Question 6

A company plans to deploy a web application on Azure virtual machines. They want to protect against a datacenter failure within a region. The VMs must be distributed across multiple physically separate locations with independent power, cooling, and networking. Which deployment option should they use?

Accepted Answer

Availability Zones. Availability Zones are physically separate datacenters within an Azure region, each with independent power, cooling, and networking. By deploying VMs across multiple zones, the application is protected against a single datacenter failure, meeting the requirement for fault isolation at the datacenter level.

Answer

Availability Set

Answer

Virtual Machine Scale Set

Answer

Proximity Placement Group

Question 7

A global e-commerce company deploys its web application on Azure Kubernetes Service (AKS) clusters in multiple Azure regions. They need a single global endpoint for users, with SSL offloading, web application firewall (WAF) protection, and URL path-based routing to the nearest healthy AKS cluster. Which Azure service should they use?

Accepted Answer

Azure Front Door. Azure Front Door is the correct choice because it provides a single global endpoint with SSL offloading, WAF protection, and URL path-based routing. It uses Anycast-based routing to direct traffic to the nearest healthy AKS cluster, ensuring low latency and high availability across multiple regions.

Answer

Azure Traffic Manager

Answer

Azure Application Gateway

Answer

Azure Load Balancer

Question 8

A company has an on-premises data center and wants to connect it to Azure with a dedicated, private network connection that is not routed over the public internet. They also need a higher service-level agreement (SLA) compared to VPN-based connections. Which Azure service should they use?

Accepted Answer

Azure ExpressRoute. Azure ExpressRoute provides a dedicated, private connection from on-premises to Azure that bypasses the public internet, ensuring lower latency, higher reliability, and a 99.95% SLA (for dedicated circuits) compared to VPN-based connections. This meets the requirement for a private network connection with a higher SLA than VPN Gateway, which relies on internet-based IPSec tunnels with a 99.9% SLA.

Answer

Azure VPN Gateway

Answer

Azure Bastion

Answer

Azure Virtual WAN

Question 9

A company has deployed several Azure VMs that do not have public IP addresses. Administrators need to securely connect to these VMs using RDP and SSH from the internet over a browser without deploying a jump box or managing VPN connections. The solution must use Microsoft Entra ID authentication for single sign-on. Which Azure service should they use?

Accepted Answer

Azure Bastion. Azure Bastion provides secure, seamless RDP and SSH connectivity to Azure VMs directly from the Azure portal over TLS, without requiring public IP addresses, jump boxes, or VPN connections. It supports Microsoft Entra ID authentication for single sign-on, meeting the requirement for browser-based access with no additional management overhead.

Answer

Azure Jump Box VM

Answer

Azure VPN Gateway

Answer

Azure ExpressRoute

Question 10

A company has an Azure virtual network (VNet) in the East US region hosting a web application. They need to securely connect to an on-premises data center in the same region using a dedicated, private network connection with high throughput and low latency. They also need a backup connection for redundancy in case the primary connection fails. Which connectivity solution should they implement?

Accepted Answer

ExpressRoute as primary with Site-to-Site VPN as backup. ExpressRoute provides a dedicated, private, high-throughput, low-latency connection to Azure, ideal for the primary link. A Site-to-Site VPN over the internet serves as a cost-effective, encrypted backup path that activates if the ExpressRoute circuit fails, meeting the redundancy requirement without relying on the same physical infrastructure.

Answer

Site-to-Site VPN only

Answer

ExpressRoute only

Answer

Azure Virtual WAN with VPN

Question 11

A company deploys a web application in two Azure regions for high availability. They need to automatically direct users to the nearest healthy region based on geographic location and endpoint health. Which Azure service should they use?

Accepted Answer

Azure Traffic Manager. Azure Traffic Manager is a DNS-based traffic load balancer that directs users to the nearest healthy region based on geographic location and endpoint health. It uses DNS resolution to route traffic to the closest available endpoint, making it ideal for global high-availability scenarios where users need automatic failover across regions.

Answer

Azure Load Balancer

Answer

Azure Application Gateway

Answer

Azure Front Door

Question 12

A company deploys a web application on Azure VMs within a single region. They need to distribute incoming HTTP traffic across multiple VMs, offload SSL encryption, and maintain session persistence (sticky sessions) for user sessions. Which Azure load balancing solution should they use?

Accepted Answer

Azure Application Gateway. Azure Application Gateway is the correct choice because it is a Layer 7 load balancer that can route HTTP/HTTPS traffic, offload SSL/TLS encryption, and support session affinity (sticky sessions) using cookies. Unlike a Layer 4 load balancer, it can inspect application-layer data, making it ideal for web applications requiring SSL termination and persistent user sessions.

Answer

Azure Load Balancer

Answer

Azure Traffic Manager

Answer

Azure Front Door

Question 13

A company deploys Azure VNets in multiple regions and has on-premises data centers. They need to connect all VNets to each other and to on-premises sites using the Microsoft global network for optimal routing. They also want to simplify management by using a single orchestration interface. Which Azure service should they use?

Accepted Answer

Azure Virtual WAN. Azure Virtual WAN (D) is correct because it provides a hub-and-spoke architecture that connects VNets across multiple regions and on-premises sites using the Microsoft global network for optimal routing. It offers a single orchestration interface (the Virtual WAN portal/API) to manage all connectivity, including site-to-site VPN, ExpressRoute, and VNet-to-VNet traffic, simplifying management and ensuring traffic traverses Microsoft's backbone rather than the public internet.

Answer

Azure Virtual Network peering

Answer

Azure VPN Gateway with multi-site connections

Answer

Azure ExpressRoute Gateway

Question 14

A company has multiple Azure virtual networks (VNets) in different regions. They want to connect all VNets to each other securely over the Microsoft backbone network, and also connect to their on-premises data center via ExpressRoute. What is the simplest Azure solution to enable connectivity between all VNets and on-premises?

Accepted Answer

Azure Virtual WAN. Azure Virtual WAN is the simplest solution because it provides a hub-and-spoke architecture that automatically connects all VNets and on-premises sites over the Microsoft backbone network. It natively integrates ExpressRoute and VPN gateways into a single managed service, eliminating the need to manually configure multiple peering or gateway connections.

Answer

VNet peering

Answer

ExpressRoute

Answer

VPN Gateway

Question 15

A company deploys a web application across multiple Azure VMs in a single region. They want to distribute incoming HTTP traffic evenly across the VMs, offload SSL encryption, and provide a fixed public IP address for clients. Which Azure load balancing solution should they use?

Accepted Answer

Azure Application Gateway. Azure Application Gateway is the correct choice because it is a Layer 7 load balancer that supports HTTP/HTTPS traffic, SSL termination, and cookie-based session affinity. It can distribute incoming HTTP traffic evenly across VMs, offload SSL encryption to reduce backend processing, and provide a fixed public IP address (VIP) for client access. This aligns with all three requirements: load balancing, SSL offload, and a static public IP.

Answer

Azure Load Balancer

Answer

Azure Traffic Manager

Answer

Azure Front Door