AZ-500 Secure networking Practice Test 14 — 15 Questions

Question 1

A company uses Azure Front Door to accelerate and secure its public web application. The security team wants to limit the number of requests from a single client IP address to 100 per minute to prevent a single user from overwhelming the backend. Which configuration should they add to the Web Application Firewall (WAF) policy associated with the Front Door?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Add a custom rule with a rate limit condition.. Azure Front Door's WAF supports custom rate limit rules that can restrict the number of requests from a single client IP address within a specified time window. By creating a custom rule with a rate limit condition set to 100 requests per minute, the security team can prevent a single client from overwhelming the backend while allowing legitimate traffic. This is the only option that directly addresses the requirement to limit requests per client IP.

Answer

Enable a managed rule set for the WAF policy.

Answer

Configure a bot protection rule set.

Answer

Set a geolocation filter to block all traffic except from allowed countries.

Question 2

A company has Azure virtual machines that need to download updates from specific external websites (e.g., *.microsoft.com and *.windowsupdate.com). The security team wants to centrally manage and allow outbound HTTPS traffic only to these FQDNs, while blocking all other outbound internet access. Which Azure networking service should they deploy to achieve this?

Accepted Answer

Azure Firewall. Azure Firewall is a managed, cloud-native network security service that can centrally enforce outbound FQDN-based rules. It allows you to create application rules that permit HTTPS traffic to specific FQDNs (e.g., *.microsoft.com) while blocking all other outbound internet access, meeting the security team's requirement for granular, centralized control.

Answer

Azure Application Gateway

Answer

Azure Front Door

Answer

Azure VPN Gateway

Question 3

You have an Azure virtual machine that hosts a web application on port 443 and a management interface on port 8443. You need to allow inbound HTTPS traffic from the internet to port 443, and allow inbound traffic on port 8443 only from the company's office public IP range (203.0.113.0/24). You want to use a managed service that provides basic DDoS protection at no additional cost. What should you use?

Accepted Answer

Network Security Group (NSG). A Network Security Group (NSG) is the correct choice because it is a free, managed Azure service that provides basic DDoS protection at no additional cost. NSGs allow you to define inbound security rules to permit HTTPS traffic (port 443) from any source and restrict management traffic (port 8443) to a specific public IP range (203.113.0.0/24). This meets all requirements without incurring extra charges for advanced services.

Answer

Azure Application Gateway with WAF

Answer

Azure Front Door

Answer

Azure Firewall

Question 4

A company deploys Azure virtual machines in a virtual network. A security policy requires that only Remote Desktop Protocol (RDP) traffic from the corporate VPN's public IP address (203.0.113.0/26) is allowed. All other inbound RDP traffic must be denied. Which configuration should be applied to the network security group (NSG) associated with the VM subnet?

Accepted Answer

Add an inbound rule to allow RDP from the corporate IP range, and add a default deny rule for all other inbound RDP traffic.. The requirement is to allow RDP (TCP port 3389) only from the corporate VPN's public IP range (203.0.113.0/26) and deny all other inbound RDP traffic. An NSG processes rules in priority order; by adding an inbound allow rule for the corporate IP range with a high priority (e.g., 100) and relying on the default deny rule (which denies all inbound traffic not explicitly allowed), only RDP from the specified range is permitted. This matches the security policy precisely.

Answer

Add an inbound rule to allow RDP from the Internet and a deny rule for RDP from the corporate IP.

Answer

Add an inbound rule to deny RDP from the corporate IP and a default deny all inbound.

Answer

No additional rules are needed because the default NSG rules already deny RDP.

Question 5

A security administrator is troubleshooting network connectivity to an Azure virtual machine. The VM is behind a network security group (NSG) that has a deny-all inbound rule as the default. The administrator wants to quickly verify whether a specific TCP packet on port 3389 from their client IP (203.0.113.50) would be allowed or blocked by the NSG. Which Azure Network Watcher tool should they use?

Accepted Answer

IP flow verify.. IP flow verify is the correct tool because it tests whether a specific packet (source IP, destination IP, protocol, port) is allowed or denied by an NSG or virtual network (VNet) route. In this scenario, the administrator needs to quickly validate inbound TCP traffic on port 3389 from client IP 203.0.113.50 to the VM, and IP flow verify provides a pass/fail result along with the exact rule that caused the outcome.

Answer

Network Performance Monitor.

Answer

Next hop.

Answer

NSG diagnostics (flow logs).

Question 6

A company has two Azure virtual networks in different Azure regions that need to communicate with each other. The security policy mandates that all inter-region traffic must be encrypted over the public internet. Which connectivity solution should the company implement to meet this requirement?

Accepted Answer

Azure VPN Gateway (site-to-site connection). Azure VPN Gateway with a site-to-site (S2S) connection is the correct solution because it establishes an encrypted IPSec tunnel over the public internet between the two virtual networks. This meets the security mandate for encryption of inter-region traffic traversing the public internet, as IPSec provides confidentiality, integrity, and authentication at the network layer.

Answer

VNet peering

Answer

Azure ExpressRoute

Answer

Azure Firewall

Question 7

A company has an Azure virtual network with two subnets: Frontend and Backend. They deploy a network virtual appliance (NVA) in a subnet named NVA_Subnet. They want to route all traffic from the Frontend subnet to the Backend subnet through the NVA for inspection. What is the minimum number of route tables required to achieve this traffic steering?

Accepted Answer

1. A single route table can be associated with the Frontend subnet and configured with a user-defined route (UDR) that has the NVA's private IP as the next hop for traffic destined to the Backend subnet. This ensures all traffic from Frontend to Backend is forwarded to the NVA for inspection. No additional route tables are needed because the NVA itself handles the routing decision after inspection, and the Backend subnet does not require a specific route to return traffic unless asymmetric routing is a concern.

Answer

2

Answer

3

Answer

4

Question 8

A company has an Azure virtual network with a subnet that hosts a web application. The security team wants to allow inbound HTTPS traffic (port 443) from the internet to the web servers, but block all other inbound traffic. They have a network security group (NSG) associated with the subnet. What is the minimal set of inbound rules required?

Accepted Answer

A rule allowing HTTPS from Internet, and no other rules (default deny all inbound).. Network security groups (NSGs) in Azure have a default deny-all inbound rule (rule 65500) that is automatically applied to all inbound traffic. Therefore, you only need to add an explicit allow rule for HTTPS (port 443) from the Internet. No additional deny rule is required because the default rule already blocks all other inbound traffic.

Answer

A rule allowing HTTPS from Internet, and a default deny all rule.

Answer

A rule allowing HTTPS from Internet, and a rule explicitly denying all other inbound traffic.

Answer

A rule allowing HTTPS from any source, and a rule denying all other traffic with lower priority.

Question 9

A company has an Azure virtual network with a single subnet that hosts web servers. The security team needs to allow inbound HTTPS traffic from the internet to the web servers, but block all other inbound traffic. They want to use a single Azure resource to accomplish this at the subnet level. Which resource should they configure?

Accepted Answer

Network Security Group (NSG). A Network Security Group (NSG) is the correct resource because it can be associated with a subnet to filter inbound traffic at Layer 3/4. By creating a rule that allows TCP port 443 (HTTPS) from the Internet service tag and a default deny-all rule, the NSG blocks all other inbound traffic while permitting HTTPS. This meets the requirement of a single Azure resource operating at the subnet level.

Answer

Azure Firewall

Answer

Azure Front Door

Answer

Application Security Group (ASG)

Question 10

Your company uses Azure Firewall to protect a virtual network. The security team needs to allow outbound HTTPS traffic from a specific subnet to a set of FQDNs, such as '*.contoso.com', while blocking all other outbound traffic. Which type of Azure Firewall rule should they configure?

Accepted Answer

An application rule with the 'Https' protocol and the target FQDNs set to '*.contoso.com'. Azure Firewall application rules are specifically designed to allow outbound HTTP/HTTPS traffic based on fully qualified domain names (FQDNs). By configuring an application rule with protocol 'Https' and target FQDNs set to '*.contoso.com', the firewall inspects the TLS Server Name Indication (SNI) extension to match the requested domain, allowing traffic only to the specified FQDNs while blocking all other outbound traffic.

Answer

A network rule with destination port 443 and protocol TCP, and the destination IP address set to the resolved IPs of the FQDNs

Answer

A NAT rule that translates the source IP to a public IP and allows traffic to any destination on port 443

Answer

A DNAT rule that redirects outbound HTTPS traffic to an internal proxy server

Question 11

A company has a virtual network with a subnet hosting Azure VMs. They want to restrict all inbound traffic to only allow HTTPS (port 443) from the internet, but also allow SSH (port 22) only from a specific management IP address range (e.g., 203.0.113.0/24). Which Azure service should they use to achieve this filtering?

Accepted Answer

Network Security Group (NSG) rule. A Network Security Group (NSG) rule is the correct choice because NSGs provide stateful, granular inbound and outbound filtering at the subnet or NIC level. You can create a rule to allow HTTPS (TCP/443) from any source (Internet) and a separate rule to allow SSH (TCP/22) only from the specific management IP range 203.0.113.0/24, while implicitly denying all other inbound traffic. NSGs are the native Azure service for this type of traffic filtering and do not require additional cost or deployment.

Answer

Azure Firewall

Answer

Azure DDoS Protection

Answer

Azure Bastion

Question 12

You have an Azure virtual machine that hosts a web application. You need to allow inbound HTTP (80) and HTTPS (443) traffic from the internet to this VM only. You also need to allow outbound traffic to the internet from the VM. You want to use a managed Azure service with minimal configuration. What should you use?

Accepted Answer

Network Security Group (NSG). A Network Security Group (NSG) is the correct choice because it is a managed Azure service that provides a stateful, layer-3/4 firewall for filtering inbound and outbound traffic to a virtual machine. With minimal configuration, you can create inbound rules to allow HTTP (TCP/80) and HTTPS (TCP/443) from the internet (source 'Internet' or 'Any') and an outbound rule to allow all traffic to the internet (default outbound rule already allows this). NSGs are directly associated with a VM's subnet or network interface, making them the simplest managed solution for this scenario.

Answer

Azure Application Gateway

Answer

Azure Firewall

Answer

Azure Bastion

Question 13

A company has a virtual network in Azure with a subnet that hosts a web application. They want to allow inbound HTTPS traffic only from a specific source IP range (198.51.100.0/24). They are using Network Security Groups (NSGs) associated with the subnet. What is the minimal set of inbound security rules required?

Accepted Answer

Two inbound rules: one to allow HTTPS, and one to deny all other traffic. Network Security Groups (NSGs) contain default inbound security rules: AllowVNetInBound (priority 65000) and AllowAzureLoadBalancerInBound (priority 65001). These default rules would permit HTTPS traffic from sources within the virtual network or from Azure Load Balancer, violating the requirement to allow HTTPS only from the specific IP range 198.51.100.0/24. Therefore, an explicit deny-all rule must be added with a higher priority (lower numerical value) than the default allow rules to block all other traffic, including that from VNet and Azure Load Balancer. The minimal set is: one rule to allow HTTPS from 198.51.100.0/24 (high priority), and one rule to deny all inbound traffic from any source (at a slightly lower priority but still above the default rules). Option A is insufficient because it relies on the default deny rule (priority 65500), which is processed after the default allow rules, so VNet and Load Balancer traffic would still be permitted.

Answer

One inbound rule: Allow TCP port 443 from source '198.51.100.0/24'

Answer

Three inbound rules: allow HTTPS, allow RDP for management, and deny all

Answer

One inbound rule: Allow TCP port 443 from source 'Any' and a separate rule to deny from '198.51.100.0/24'

Question 14

A company has an Azure virtual network with multiple subnets. They want to centrally inspect and log all outbound traffic to the internet. They also need to allow or deny traffic based on domain names (FQDNs). Which Azure resource should they deploy?

Accepted Answer

Azure Firewall. Azure Firewall is a managed, cloud-native network security service that provides centralized outbound traffic inspection and logging. It supports application rules based on fully qualified domain names (FQDNs), enabling allow or deny decisions for outbound traffic to the internet using Layer 7 (application layer) filtering, which meets both requirements directly.

Answer

Network Virtual Appliance (NVA) from Azure Marketplace

Answer

Azure Application Gateway with Web Application Firewall (WAF)

Answer

Azure Network Security Groups (NSGs)

Question 15

A company has an Azure virtual network with subnets SubnetA and SubnetB. They deploy a network virtual appliance (NVA) in a subnet called NVA_Subnet. They want all traffic between SubnetA and SubnetB to be routed through the NVA for inspection. What is the minimum number of route tables and routes required?

Accepted Answer

Two route tables, each with a route to the other subnet via the NVA. Azure route tables are associated with subnets, not the virtual network as a whole. To force traffic between SubnetA and SubnetB through the NVA, you need two separate route tables: one for SubnetA with a route to SubnetB's address space with the next hop set to the NVA's private IP, and one for SubnetB with a route to SubnetA's address space with the next hop set to the NVA's private IP. This ensures bidirectional traffic is inspected.

Answer

One route table with a route for each subnet via the NVA

Answer

No route tables needed; enable IP forwarding on the NVA

Answer

One route table with a single default route (0.0.0.0/0) via the NVA