Azure Front Door overview - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ service_behavior

intermediate

How does Azure Front Door handle incoming user requests?

Azure Front Door is a service that helps deliver your web applications faster and more securely. When a user sends a request to your website, how does Azure Front Door decide where to send that request?

A It sends the request to the closest backend server based on the user's geographic location and health of the backend.

B It sends the request to the backend server with the highest CPU usage to balance load.

C It randomly picks any backend server regardless of location or health status.

D It always sends the request to the first backend server listed in the configuration, ignoring location or health.

💡 Hint

Think about how a service can improve speed and reliability by choosing the best server.

Azure Front Door routes user requests to the backend server that is closest in terms of network latency and is healthy, ensuring fast and reliable delivery.

❓ Architecture

intermediate

Which Azure Front Door feature helps protect your web app from malicious attacks?

Azure Front Door offers several features to secure your web applications. Which feature specifically helps block common web attacks like SQL injection or cross-site scripting?

A Web Application Firewall (WAF)

B Load Balancer

C Content Delivery Network (CDN)

D Virtual Network Gateway

💡 Hint

Think about a shield that filters harmful web traffic.

The Web Application Firewall (WAF) feature in Azure Front Door inspects incoming traffic and blocks common web attacks to protect your application.

❓ Configuration

advanced

What is the effect of enabling session affinity in Azure Front Door?

Session affinity ensures that a user's requests are always sent to the same backend server during a session. What happens when you enable session affinity in Azure Front Door?

A User requests are routed to the backend server with the least network latency regardless of previous requests.

B User requests are routed to the same backend server based on a cookie, improving session consistency.

C User requests are distributed randomly to any backend server to balance load evenly.

D User requests are blocked if the backend server is busy, forcing retries.

💡 Hint

Think about how websites keep you logged in during a visit.

Session affinity uses cookies to keep a user's requests going to the same backend server, which helps maintain session state.

✅ Best Practice

advanced

Which practice improves Azure Front Door performance for global users?

You want to optimize your Azure Front Door setup to serve users worldwide with minimal delay. Which practice best achieves this?

A Set a very high time-to-live (TTL) for DNS records to avoid updates.

B Disable health probes to reduce backend server load.

C Use only one backend server in a single region to simplify management.

D Enable caching at Azure Front Door to store static content closer to users.

💡 Hint

Think about how storing copies of files near users can speed up delivery.

Enabling caching at Azure Front Door stores static content at edge locations, reducing latency and improving load times for global users.

❓ security

expert

What is the impact of configuring Azure Front Door with HTTPS only and redirect HTTP to HTTPS?

You configure Azure Front Door to accept only HTTPS traffic and to redirect all HTTP requests to HTTPS. What is the main impact of this configuration?

A Azure Front Door blocks all HTTP requests without redirecting, causing errors.

B Users can access the site using HTTP without encryption, which improves speed.

C All user traffic is encrypted, improving security and preventing data interception.

D Only backend servers need to support HTTPS; user requests can use HTTP.

💡 Hint

Think about how HTTPS protects data between users and your site.

Redirecting HTTP to HTTPS ensures all traffic is encrypted, protecting user data from interception or tampering.