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Question 181
You are designing a solution to allow multiple applications deployed in Azure to securely share a storage account. The storage account needs to be accessed securely without exposing it to the public internet. You want to ensure that traffic to and from the storage account is encrypted and only accessible to the applications within the same region. Which solution should you implement?
A) Azure Virtual Network (VNet) Peering
B) Azure Private Link
C) Azure VPN Gateway
D) Azure Load Balancer
Answer: B)
Explanation:
A) Azure Virtual Network (VNet) Peering: VNet Peering enables communication between VNets in the same or different regions, but it does not provide a way to restrict access to services like storage accounts. While peering allows private communication between VNets, it does not inherently ensure that a storage account is securely accessed without the public internet.
B) Azure Private Link: Azure Private Link provides a secure and private connection to Azure services like Azure Storage, SQL Database, and others, over a private endpoint. By using Private Link, you ensure that your applications access the storage account over a private IP address within your VNet, which means the traffic never traverses the public internet. It also ensures that traffic is encrypted, meeting the requirements for secure access and encryption.
C) Azure VPN Gateway: A VPN Gateway provides secure connectivity between an on-premises network and an Azure VNet or between VNets using IPsec tunnels. While it can secure traffic, it is typically used for connecting on-premises infrastructure to Azure, not for securing access to Azure resources within a VNet.
D) Azure Load Balancer: Azure Load Balancer is used to distribute traffic across multiple instances of a service, but it does not provide security for accessing storage accounts or other Azure services. It works at Layer 4 (TCP/UDP) and is not suited for securing traffic to storage accounts. Azure Private Link is the best solution for securely connecting applications in Azure to a storage account over a private, encrypted connection.
Question 182
You are designing a solution to deploy a multi-tier application in Azure. The application consists of a web tier, application tier, and database tier. You want to ensure that the communication between the tiers is secure, and you want to restrict traffic between the tiers based on specific security rules. What should you use to achieve this?
A) Network Security Groups (NSGs)
B) Azure Firewall
C) Azure Application Gateway
D) Virtual Network Peering
Answer: A)
Explanation:
A) Network Security Groups (NSGs): Network Security Groups (NSGs) allow you to create security rules that control inbound and outbound traffic for Azure resources. By applying NSGs at the subnet or network interface level, you can restrict traffic between different application tiers in your Azure environment. For example, you can allow only traffic from the web tier to the application tier and from the application tier to the database tier, effectively securing the communication between the application tiers.
B) Azure Firewall: Azure Firewall is a stateful firewall that protects your network by controlling traffic at the perimeter. While it provides robust security features like filtering based on application protocols, it is better suited for securing traffic between VNets, between on-premises networks and Azure, or at the edge of your network, rather than between internal application tiers.
C) Azure Application Gateway: Azure Application Gateway is a Layer 7 load balancer designed for web traffic (HTTP/HTTPS). It also provides features like URL-based routing, SSL termination, and Web Application Firewall (WAF). While it can secure and distribute traffic to web servers, it is not designed to restrict traffic between application tiers (e.g., between a web tier and an application tier).
D) Virtual Network Peering: VNet Peering allows communication between two VNets, but it does not inherently provide a way to apply security rules to restrict traffic between specific application tiers within the same VNet. For controlling traffic between different tiers, NSGs are the better option. Network Security Groups (NSGs) are the most appropriate solution for securing communication between the tiers of a multi-tier application by defining granular security rules.
Question 183
You are configuring a solution where users in Azure must access an internal web application securely. The application is hosted within a virtual machine (VM) in an Azure VNet. The users should access the application via the internet, but the VM should not have a public IP address. You need to configure a secure solution that provides access to the application without exposing the VM to the public internet. Which solution should you implement?
A) Azure Bastion
B) Azure Application Gateway
C) Azure VPN Gateway
D) Azure Front Door
Answer: A)
Explanation:
A) Azure Bastion: Azure Bastion provides secure RDP and SSH access to Azure VMs directly over SSL without exposing them to the public internet. Azure Bastion allows users to access VMs securely from within the Azure portal using their browser, and the VMs do not need public IP addresses to be accessed. This is the ideal solution for securely accessing internal web applications hosted on VMs without exposing them to the public internet.
B) Azure Application Gateway: Azure Application Gateway is a Layer 7 (HTTP/HTTPS) load balancer that can be used for routing web traffic to VMs. While it allows secure access to applications, it still requires public IP addresses for the load balancer to handle incoming traffic. It is not the best solution for accessing VMs directly without exposing them to the public internet.
C) Azure VPN Gateway: Azure VPN Gateway provides secure, encrypted connections between Azure VNets and on-premises networks or between different VNets in Azure. While it can secure access to the Azure environment, it requires a VPN client on the user side and does not provide direct access to VMs via the Azure portal.
D) Azure Front Door: Azure Front Door provides global HTTP/HTTPS load balancing and security for web applications, but it still relies on public endpoints. It is better suited for scenarios where global traffic distribution and high availability are needed for web applications, not for securely accessing internal applications without exposing VMs to the public internet. Azure Bastion is the correct solution for securely accessing an internal web application on a VM without exposing the VM to the public internet.
Question 184
You are deploying an application in Azure, and you need to ensure that it can scale automatically based on the amount of incoming traffic. You want to balance the traffic across multiple instances of the application and ensure high availability. Which of the following Azure services should you implement to achieve this?
A) Azure Load Balancer
B) Azure Application Gateway
C) Azure Traffic Manager
D) Azure Virtual Machine Scale Sets
Answer: D)
Explanation:
A) Azure Load Balancer: Azure Load Balancer is a Layer 4 (TCP/UDP) load balancer that distributes traffic across multiple instances of a service. However, it does not provide automatic scaling of resources. While it helps balance traffic, scaling needs to be managed separately using other services like Virtual Machine Scale Sets (VMSS).
B) Azure Application Gateway: Azure Application Gateway is a Layer 7 (HTTP/HTTPS) load balancer that provides routing and security features like SSL termination and Web Application Firewall (WAF). It can distribute traffic based on application-layer data and is suitable for web applications. However, like Azure Load Balancer, it does not automatically scale the instances.
C) Azure Traffic Manager: Azure Traffic Manager is a global DNS-based load balancer that directs traffic to the nearest available endpoint. It is typically used for global traffic distribution, not for automatically scaling applications or balancing traffic across instances within a single region.
D) Azure Virtual Machine Scale Sets (VMSS): Azure Virtual Machine Scale Sets automatically scale the number of VM instances based on demand. When used with Azure Load Balancer or Application Gateway, VMSS ensures that your application can handle varying amounts of incoming traffic. It provides automatic scaling of virtual machines based on load, ensuring high availability and performance. Azure Virtual Machine Scale Sets (VMSS) is the best solution for automatically scaling the number of application instances based on traffic and ensuring high availability.
Question 185
You are configuring a secure communication solution between an Azure VNet and an on-premises network. The communication should be encrypted, and the traffic should not traverse the public internet. Which Azure solution should you implement to meet these requirements?
A) Azure VPN Gateway with Site-to-Site VPN
B) Azure ExpressRoute
C) Azure Virtual Network Peering
D) Azure Bastion
Answer: B)
Explanation:
A) Azure VPN Gateway with Site-to-Site VPN: Azure VPN Gateway can securely connect an Azure VNet to an on-premises network using IPsec encryption. While it provides encryption and security, it still relies on the public internet for routing traffic between Azure and on-premises networks, which may not meet the strict performance or compliance requirements for some applications.
B) Azure ExpressRoute: Azure ExpressRoute provides a private, dedicated connection between Azure and on-premises networks. It bypasses the public internet, ensuring that traffic between Azure and on-premises networks is both secure and high-performing. ExpressRoute offers the most secure and efficient method for private, encrypted communication between an Azure VNet and an on-premises network.
C) Azure Virtual Network Peering: Virtual Network Peering enables communication between VNets, but it is designed for use within Azure, not between Azure and on-premises networks. It cannot provide a secure, encrypted connection to on-premises networks without relying on VPN or ExpressRoute.
D) Azure Bastion: Azure Bastion provides secure RDP and SSH access to Azure VMs, but it does not address the need to connect Azure VNets to on-premises networks. Azure ExpressRoute is the best solution for securely connecting an Azure VNet to an on-premises network with encrypted communication over a private, dedicated connection.
Question 186
You are configuring a solution where a virtual network (VNet) in Azure needs to securely communicate with an on-premises network through an encrypted connection. The solution must ensure that the communication is highly available and resilient to failures. Which Azure solution should you implement?
A) Azure VPN Gateway with Active-Active configuration
B) Azure VPN Gateway with Static Routes
C) Azure ExpressRoute with a single circuit
D) Azure Virtual Network Peering with Gateway Transit
Answer: A)
Explanation:
A) Azure VPN Gateway with Active-Active configuration: The Active-Active configuration for Azure VPN Gateway provides high availability by allowing multiple tunnels between Azure and on-premises networks. If one tunnel fails, traffic is automatically routed through the other tunnel, ensuring continuous connectivity. This configuration is ideal for scenarios that require high availability and resilience for encrypted communication.
B) Azure VPN Gateway with Static Routes: Static routes can be used with Azure VPN Gateway, but they do not provide automatic failover or high availability. Static routing requires manual configuration of routes and is typically not recommended for scenarios that require fault tolerance and resilience.
C) Azure ExpressRoute with a single circuit: While ExpressRoute provides private, high-performance connectivity between Azure and on-premises networks, using a single circuit creates a single point of failure. If the circuit goes down, communication between Azure and the on-premises network will be interrupted. For high availability, you would need to use multiple ExpressRoute circuits.
D) Azure Virtual Network Peering with Gateway Transit: Virtual Network Peering with Gateway Transit is used to share a VPN Gateway between multiple VNets in Azure, but it does not address high availability or encrypted communication between Azure and on-premises networks. This solution is more suitable for intra-Azure VNet communication. Azure VPN Gateway with Active-Active configuration is the most appropriate solution for ensuring high availability and resilience for encrypted communication between Azure and on-premises networks.
Question 187
You are designing a solution that requires multiple Azure virtual networks (VNets) in different regions to securely communicate with each other. The communication needs to be encrypted, and traffic should not traverse the public internet. Which solution should you implement to meet these requirements?
A) Azure VPN Gateway with VNet-to-VNet connection
B) Azure ExpressRoute with Global Reach
C) Azure Virtual Network Peering with Global Reach
D) Azure Application Gateway with Web Application Firewall (WAF)
Answer: B)
Explanation:
A) Azure VPN Gateway with VNet-to-VNet connection: A Site-to-Site VPN using Azure VPN Gateway allows secure communication between VNets in different regions, but it relies on the public internet for routing traffic. While it encrypts the traffic, it is not ideal for high-performance or low-latency communication across multiple regions.
B) Azure ExpressRoute with Global Reach: ExpressRoute with Global Reach is the best solution for securely connecting multiple VNets in different regions. It provides a private, dedicated connection between VNets, bypassing the public internet, ensuring low-latency, high-performance communication. With ExpressRoute, your VNets can securely communicate across regions while ensuring compliance with high-security standards.
C) Azure Virtual Network Peering with Global Reach: Azure VNet Peering allows communication between VNets, but it only works within Azure and is limited to the private backbone network of Azure. Peering with Global Reach allows communication between VNets in different regions but still uses the Azure backbone, ensuring secure communication. However, ExpressRoute with Global Reach is the superior solution for encrypted communication between regions.
D) Azure Application Gateway with Web Application Firewall (WAF): Azure Application Gateway is focused on web traffic and load balancing, with WAF providing security for HTTP/HTTPS applications. It does not offer secure, encrypted communication between VNets in different regions. Azure ExpressRoute with Global Reach is the best solution for secure, encrypted communication between VNets in different regions over a private, dedicated connection.
Question 188
You are deploying a multi-tier application in Azure. The application consists of three tiers: web, application, and database. The web and application tiers are hosted in Azure, while the database tier is on-premises. You need to secure communication between the web, application, and database tiers, ensuring that traffic is encrypted and access is restricted based on security rules. Which solution should you implement?
A) Network Security Groups (NSGs)
B) Azure VPN Gateway
C) Azure ExpressRoute
D) Azure Application Gateway with Web Application Firewall (WAF)
Answer: C)
Explanation:
A) Network Security Groups (NSGs): NSGs are used to control inbound and outbound traffic for Azure resources like virtual machines (VMs) and subnets. While NSGs can restrict traffic between application tiers within Azure, they do not address communication between the Azure tiers and the on-premises database.
B) Azure VPN Gateway: A VPN Gateway can provide secure communication between an Azure VNet and an on-premises network, but it does not provide granular control over traffic between different application tiers. It ensures encryption, but it is not specifically designed to restrict access between multiple tiers of an application.
C) Azure ExpressRoute: Azure ExpressRoute provides a private, dedicated connection between Azure and on-premises networks. It ensures that traffic between Azure resources and an on-premises database is encrypted and high-performance. Using ExpressRoute, you can secure communication between your Azure-hosted web and application tiers and the on-premises database, ensuring that traffic does not traverse the public internet.
D) Azure Application Gateway with Web Application Firewall (WAF): Azure Application Gateway provides application-layer (HTTP/HTTPS) load balancing, but it is more suitable for routing web traffic and securing web applications with WAF. It does not provide encryption or control over traffic between multiple tiers or between Azure and on-premises resources. Azure ExpressRoute is the ideal solution for securely connecting your Azure-hosted application tiers with the on-premises database while ensuring encryption and high availability.
Question 189
You need to configure an Azure solution where traffic between multiple VNets in the same region must be routed securely. The solution should ensure that communication is private and does not traverse the public internet. Which of the following options should you implement?
A) Azure VPN Gateway with VNet-to-VNet connection
B) Azure Virtual Network Peering
C) Azure Load Balancer with Private IPs
D) Azure Firewall with Virtual Network Routing
Answer: B)
Explanation:
A) Azure VPN Gateway with VNet-to-VNet connection: A VNet-to-VNet connection via Azure VPN Gateway provides secure, encrypted communication between VNets, but it relies on the public internet for routing traffic, which is not ideal for secure, private communication within the same region.
B) Azure Virtual Network Peering: VNet Peering allows VNets within the same region (or across regions) to communicate securely over Azure’s private backbone network. It ensures that traffic between peered VNets stays within the Azure network, providing private, low-latency communication without using the public internet. This is the most efficient and secure solution for routing traffic between VNets within the same region.
C) Azure Load Balancer with Private IPs: Azure Load Balancer distributes traffic across multiple instances, but it does not provide a solution for secure routing between VNets. It is more focused on balancing traffic for services and does not manage private, encrypted communication between VNets.
D) Azure Firewall with Virtual Network Routing: Azure Firewall is a stateful firewall that can control traffic between VNets and protect the perimeter of your network. While it can enforce security rules, it does not provide private communication between VNets. Instead, it is designed to control traffic at the perimeter, not for direct communication between VNets within the same region. Azure Virtual Network Peering is the optimal solution for securely routing traffic between multiple VNets within the same region over Azure’s private backbone network.
Question 190
You are designing a solution where multiple applications hosted in Azure need to access a shared storage account. The storage account should be secured so that only the applications within Azure can access it, and it should not be accessible from the public internet. Which solution should you implement?
A) Azure Virtual Network (VNet) Peering with Network Security Groups (NSGs)
B) Azure Private Link
C) Azure Application Gateway with Web Application Firewall (WAF)
D) Azure Firewall with Application Rules
Answer: B)
Explanation:
A) Azure Virtual Network (VNet) Peering with Network Security Groups (NSGs): While VNet Peering can enable communication between VNets, it does not secure access to Azure services like storage accounts. NSGs can restrict access within the VNet, but they cannot be used to securely access Azure services like storage over private connections.
B) Azure Private Link: Azure Private Link provides a private connection to Azure services like Azure Storage, ensuring that traffic is routed over a private network and does not traverse the public internet. By using Private Link, applications can access the storage account over a private IP address, ensuring security and compliance. It prevents exposure to the public internet while allowing secure, private communication.
C) Azure Application Gateway with Web Application Firewall (WAF): While Application Gateway can secure web traffic to applications, it is not designed to secure access to Azure services like storage accounts. WAF primarily focuses on HTTP/HTTPS traffic and does not secure non-web traffic to services like Azure Storage.
D) Azure Firewall with Application Rules: Azure Firewall provides security for network traffic, but it does not offer a solution to secure access to Azure services like storage accounts. Application rules can help control outbound traffic, but they are not a suitable method for securing access to Azure Storage specifically. Azure Private Link is the best solution for ensuring that only Azure applications can securely access a shared storage account over a private network without exposing it to the public internet.
Question 191
You are designing an Azure solution that requires secure communication between multiple virtual networks (VNets) in different regions. The solution must ensure that traffic between VNets is encrypted, private, and does not traverse the public internet. Which of the following solutions should you implement to meet these requirements?
A) Azure VPN Gateway with VNet-to-VNet connections
B) Azure ExpressRoute with Global Reach
C) Azure Virtual Network Peering with Gateway Transit
D) Azure Application Gateway with Web Application Firewall (WAF)
Answer: B)
Explanation:
A) Azure VPN Gateway with VNet-to-VNet connections: While VPN Gateway with VNet-to-VNet connections provides secure, encrypted traffic between VNets, it still uses the public internet for routing. This solution might not meet the requirements for private communication across regions as it relies on public internet links.
B) Azure ExpressRoute with Global Reach: ExpressRoute with Global Reach enables private, encrypted communication between multiple VNets across different regions using Azure’s dedicated private network connections. Traffic between VNets using ExpressRoute is isolated from the public internet, ensuring higher security, better performance, and compliance with high-availability requirements.
C) Azure Virtual Network Peering with Gateway Transit: VNet Peering allows communication between VNets within the same region or across regions. However, VNet Peering with Gateway Transit allows one VNet to use the VPN Gateway of another VNet for site-to-site connections. This solution still relies on public internet pathways unless paired with ExpressRoute for fully private traffic.
D) Azure Application Gateway with Web Application Firewall (WAF): Application Gateway is designed to route and protect web traffic (HTTP/HTTPS) for applications, and it includes a Web Application Firewall (WAF). While it provides security for application traffic, it doesn’t meet the need for private, encrypted communication between VNets across regions. Azure ExpressRoute with Global Reach provides private and secure connectivity between VNets in different regions, bypassing the public internet entirely and ensuring high performance and compliance.
Question 192
You need to configure an Azure solution where users can securely access an internal web application hosted in a virtual machine (VM) in Azure. The VM should not have a public IP address, and users should be able to access the application over the internet. Which solution should you implement to meet these requirements?
A) Azure Bastion
B) Azure Load Balancer with Public IP
C) Azure Application Gateway with SSL Termination
D) Azure VPN Gateway with Point-to-Site VPN
Answer: A)
Explanation:
A) Azure Bastion: Azure Bastion provides secure RDP and SSH access to virtual machines without exposing them to the public internet. With Bastion, users can connect securely to the VM through the Azure portal, and the VM does not need a public IP. This solution is perfect for securely accessing a web application hosted on a VM without exposing it to the public internet.
B) Azure Load Balancer with Public IP: Azure Load Balancer with a public IP can distribute traffic across multiple VMs, but it exposes the VM to the internet, which contradicts the requirement to avoid a public IP for the VM. This would expose the internal application to the public internet, which isn’t desirable for secure access.
C) Azure Application Gateway with SSL Termination: Azure Application Gateway can provide SSL termination and load balancing for web traffic (HTTP/HTTPS), but it requires a public IP to route internet traffic. This solution would expose the web application to the public internet, which doesn’t meet the requirement of not having a public IP on the VM itself.
D) Azure VPN Gateway with Point-to-Site VPN: Azure VPN Gateway allows users to securely connect to an Azure VNet from remote locations. However, Point-to-Site VPN is typically used for connecting a user’s device to the Azure network securely. This solution does not directly address the need to access a web application hosted on a VM without a public IP. Azure Bastion is the best solution to provide secure access to an internal web application on a VM without exposing the VM to the public internet.
Question 193
You need to design a highly available and scalable solution to load balance incoming traffic across multiple virtual machines (VMs) in Azure. The solution should be capable of handling both HTTP and HTTPS traffic, and SSL termination should be supported. Which service should you implement?
A) Azure Load Balancer
B) Azure Traffic Manager
C) Azure Application Gateway
D) Azure Front Door
Answer: C)
Explanation:
A) Azure Load Balancer: Azure Load Balancer is a Layer 4 (TCP/UDP) load balancer that can distribute traffic across multiple VMs. However, it does not support SSL termination or Layer 7 (HTTP/HTTPS) traffic routing. It is suitable for non-HTTP traffic and simple load balancing, but it is not the right choice for applications requiring SSL termination and HTTP/HTTPS routing.
B) Azure Traffic Manager: Azure Traffic Manager is a DNS-based traffic load balancer that allows you to distribute traffic across Azure regions and endpoints. It is more suitable for global traffic distribution and failover rather than load balancing HTTP/HTTPS traffic at the application layer.
C) Azure Application Gateway: Azure Application Gateway is a Layer 7 (HTTP/HTTPS) load balancer that can handle both HTTP and HTTPS traffic. It supports SSL termination, allowing the traffic to be decrypted at the load balancer level, offloading the SSL decryption from the VMs. This makes it the ideal solution for highly available and scalable applications that require secure traffic distribution.
D) Azure Front Door: Azure Front Door provides global load balancing and SSL termination, but it is designed for globally distributed applications that require low-latency routing and security. While it can be used for web applications, Azure Application Gateway is more appropriate for regional, internal load balancing within a single Azure region. Azure Application Gateway is the best solution for load balancing HTTP/HTTPS traffic with SSL termination at the regional level.
Question 194
You are deploying an Azure solution where you need to secure traffic between multiple VNets in the same region. The communication must be encrypted, and traffic should be kept within Azure’s private backbone network. Which solution should you implement to secure the communication between the VNets?
A) Azure VPN Gateway with Site-to-Site VPN
B) Azure ExpressRoute with Global Reach
C) Azure Virtual Network Peering
D) Azure Firewall with Traffic Rules
Answer: C)
Explanation:
A) Azure VPN Gateway with Site-to-Site VPN: A Site-to-Site VPN can securely connect VNets, but it typically uses public internet pathways, which might not meet the requirement to keep traffic within Azure’s private backbone network.
B) Azure ExpressRoute with Global Reach: While ExpressRoute provides private connectivity, it is primarily designed for connecting on-premises networks to Azure, or for inter-region connectivity. It is not necessary for connecting VNets within the same region if you only need private communication within Azure.
C) Azure Virtual Network Peering: VNet Peering allows VNets within the same region (or across regions) to securely communicate over Azure’s private backbone network, without traffic leaving the Azure network. Peering is the most efficient and secure way to enable encrypted traffic between VNets while ensuring traffic stays within Azure’s private network.
D) Azure Firewall with Traffic Rules: Azure Firewall provides security for traffic within and between VNets, but it does not directly handle secure communication between VNets. While it can be used to enforce security rules and filter traffic, VNet Peering is the solution for routing traffic securely between VNets. Azure Virtual Network Peering is the best solution for securely routing traffic between VNets within the same region while keeping it within Azure’s private network.
Question 195
You are designing a solution where users from different geographic locations must securely access a web application hosted in Azure. The solution must ensure that users are directed to the nearest available region for low-latency access. Which Azure service should you implement to ensure optimal routing of user traffic?
A) Azure Traffic Manager
B) Azure Application Gateway
C) Azure Load Balancer
D) Azure Front Door
Answer: A)
Explanation:
A) Azure Traffic Manager: Azure Traffic Manager is a DNS-based traffic load balancer that can direct user traffic to the nearest Azure region based on performance, geographic location, or other routing methods. It ensures that users are routed to the closest available endpoint, reducing latency and improving the user experience.
B) Azure Application Gateway: Azure Application Gateway is a Layer 7 load balancer, but it is region-specific. It provides routing based on URL and HTTP/HTTPS traffic but does not provide global traffic routing or optimize latency based on geographic location.
C) Azure Load Balancer: Azure Load Balancer is a Layer 4 load balancer that can distribute traffic across multiple VMs but does not handle global traffic distribution or optimize routing based on geographic location.
D) Azure Front Door: Azure Front Door provides global load balancing and routing, optimizing traffic based on the nearest available region for users. While it can handle low-latency routing, Traffic Manager is more specifically suited for DNS-based routing based on geographic location or performance. Azure Traffic Manager is the optimal solution for directing user traffic to the nearest region for low-latency access to a web application.
Question 196
You are configuring a highly available and scalable web application in Azure. The application needs to be accessed by users globally. The solution must ensure low-latency routing to the nearest available region and provide SSL termination at the edge of Azure’s network. Which Azure service should you implement?
A) Azure Load Balancer
B) Azure Front Door
C) Azure Application Gateway
D) Azure Traffic Manager
Answer: B)
Explanation:
A) Azure Load Balancer: Azure Load Balancer is a Layer 4 (TCP/UDP) load balancer that distributes traffic across multiple instances of an application, but it does not offer SSL termination or low-latency global routing. It works at the network layer, so it cannot be used to provide global distribution and SSL offload like Azure Front Door.
B) Azure Front Door: Azure Front Door is designed for global applications and offers features like low-latency routing, SSL termination, and edge caching. It routes user traffic to the nearest available region based on performance and geographic proximity, ensuring that users are directed to the closest application endpoint. Front Door also provides SSL termination, improving security and reducing the load on your application servers.
C) Azure Application Gateway: Azure Application Gateway operates at Layer 7 (HTTP/HTTPS) and provides features like SSL termination, URL-based routing, and load balancing. However, it is region-specific and not designed for global traffic distribution. It is ideal for internal applications within a single region, not for distributing traffic globally.
D) Azure Traffic Manager: Azure Traffic Manager is a DNS-based global load balancer that can distribute traffic based on geographic location, latency, or performance. While it helps direct traffic to different Azure regions, it does not provide SSL termination or other application-layer features like Azure Front Door. Azure Front Door is the best choice for globally distributed applications that require low-latency routing and SSL termination at the edge.
Question 197
You are deploying a solution that requires you to implement a secure, private connection between an Azure virtual network (VNet) and an on-premises network. The solution should ensure that traffic does not traverse the public internet and must support high-throughput workloads. Which of the following Azure solutions should you implement?
A) Azure VPN Gateway
B) Azure Virtual Network Peering
C) Azure ExpressRoute
D) Azure Application Gateway
Answer: C)
Explanation:
A) Azure VPN Gateway: Azure VPN Gateway provides a secure, encrypted connection between an Azure VNet and an on-premises network. However, it relies on the public internet to route traffic, which may not meet the requirement for a private, high-throughput connection. It is suitable for smaller, less performance-critical workloads.
B) Azure Virtual Network Peering: VNet Peering allows VNets to communicate with each other within Azure but does not provide a direct connection between Azure and on-premises networks. This solution does not meet the requirement for connecting Azure VNets with on-premises networks securely.
C) Azure ExpressRoute: Azure ExpressRoute provides a dedicated, private connection between Azure and on-premises networks, bypassing the public internet. It offers high throughput, low latency, and reliability, making it ideal for high-performance workloads and secure, private communication between Azure and on-premises resources.
D) Azure Application Gateway: Azure Application Gateway is primarily used for load balancing web traffic (HTTP/HTTPS) and does not provide a direct connection between Azure and on-premises networks. It is not designed for connecting on-premises networks securely to Azure. Azure ExpressRoute is the best solution for creating a high-throughput, secure private connection between an Azure VNet and an on-premises network, bypassing the public internet.
Question 198
You need to secure communication between two Azure virtual machines (VMs) in different virtual networks (VNets) within the same Azure region. The solution must ensure that traffic is encrypted and remains within Azure’s private network. Which solution should you implement?
A) Azure VPN Gateway with VNet-to-VNet connections
B) Azure ExpressRoute
C) Azure Virtual Network Peering
D) Azure Load Balancer with Internal IP addresses
Answer: C)
Explanation:
A) Azure VPN Gateway with VNet-to-VNet connections: VPN Gateway with VNet-to-VNet connections provides a secure connection between VNets but typically relies on the public internet to route traffic. This solution is suitable for encrypted communication but does not meet the requirement for keeping traffic within Azure’s private network unless paired with ExpressRoute.
B) Azure ExpressRoute: While ExpressRoute provides a private, high-performance connection between Azure and on-premises networks, it is not required for communication between VNets within the same Azure region. It is more appropriate for hybrid cloud scenarios involving on-premises networks.
C) Azure Virtual Network Peering: VNet Peering allows two VNets in the same region (or across regions) to communicate with each other over Azure’s private backbone network. It encrypts traffic between the VNets and ensures that it stays within Azure’s infrastructure, meeting the requirement for encrypted communication within Azure’s private network.
D) Azure Load Balancer with Internal IP addresses: While Azure Load Balancer can route traffic between VMs, it is typically used for load balancing within the same VNet. It does not provide a solution for secure communication between VNets in different regions or across a single region, especially when encryption is needed. Azure Virtual Network Peering is the most efficient and secure solution for enabling encrypted communication between VMs in different VNets within the same Azure region while ensuring that traffic remains within Azure’s private network.
Question 199
You are designing a solution where an Azure web application needs to interact with a database located on-premises. The solution must ensure that the database traffic is securely encrypted and does not traverse the public internet. Which Azure solution should you implement?
A) Azure VPN Gateway with Site-to-Site connection
B) Azure Application Gateway with Web Application Firewall (WAF)
C) Azure ExpressRoute with private peering
D) Azure Traffic Manager
Answer: C)
Explanation:
A) Azure VPN Gateway with Site-to-Site connection: A Site-to-Site VPN provides encrypted traffic between Azure and on-premises networks. However, it relies on the public internet to route traffic, which may not meet the requirement of keeping the traffic private and secure without using the public internet.
B) Azure Application Gateway with Web Application Firewall (WAF): Azure Application Gateway is designed for load balancing HTTP/HTTPS traffic to web applications and provides WAF functionality. While it helps secure web applications, it does not offer a secure connection for database traffic between Azure and on-premises systems.
C) Azure ExpressRoute with private peering: ExpressRoute with private peering establishes a private, dedicated connection between Azure and on-premises networks. It ensures that traffic does not traverse the public internet, making it an ideal solution for securely transmitting database traffic between Azure and on-premises resources.
D) Azure Traffic Manager: Traffic Manager is a DNS-based traffic load balancer that helps distribute traffic across multiple regions. It does not secure or route database traffic between Azure and on-premises networks, so it is not suitable for this scenario. Azure ExpressRoute with private peering is the best solution to ensure secure, private, and high-performance communication between an Azure web application and an on-premises database.
Question 200
You are deploying an application in Azure that needs to be accessed by multiple users globally. The application’s resources should be load-balanced across multiple regions to provide high availability and low-latency access. Which Azure service should you implement to distribute user traffic to the nearest region and ensure application availability?
A) Azure Load Balancer
B) Azure Traffic Manager
C) Azure Application Gateway
D) Azure Front Door
Answer: B)
Explanation:
A) Azure Load Balancer: Azure Load Balancer is a Layer 4 load balancer used to distribute traffic across virtual machines in a single region. While it ensures high availability within a region, it does not provide global traffic distribution or routing based on geographic location.
B) Azure Traffic Manager: Azure Traffic Manager is a global DNS-based load balancer that helps distribute user traffic across multiple regions based on the lowest latency, geographic location, or other routing methods. It ensures high availability and optimizes performance by directing users to the nearest application endpoint.
C) Azure Application Gateway: Azure Application Gateway is a Layer 7 load balancer that handles HTTP/HTTPS traffic within a single region. While it provides features like SSL termination and URL-based routing, it does not handle global traffic distribution or multi-region load balancing.
D) Azure Front Door: Azure Front Door is a global load balancer and application acceleration service that can route traffic to the nearest region and optimize performance globally. It can handle traffic across multiple regions, but for user traffic distribution specifically based on low-latency or geographic regions, Traffic Manager is more focused on that specific use case. Azure Traffic Manager is the best choice for distributing traffic across multiple regions based on geographic location and ensuring global high availability for the application.
