Why load balancing matters in Azure - Challenge Your Understanding

Challenge - 5 Problems

🧠 Conceptual

intermediate

Why use load balancing in cloud infrastructure?

Imagine you have a website that many people visit at the same time. What is the main reason to use load balancing?

A To increase the number of servers without managing traffic

B To store user data securely in a single database

C To split user traffic evenly across multiple servers to avoid overload

D To reduce the size of the website files for faster downloads

💡 Hint

Think about what happens if too many users visit one server at once.

Load balancing helps distribute user requests evenly across servers. This prevents any one server from becoming too busy and slowing down or crashing.

❓ service_behavior

intermediate

What happens if a load balancer detects a failed server?

In Azure, if a load balancer notices one server is not responding, what does it do?

A It stops sending traffic to the failed server and redirects to healthy servers

B It restarts the failed server automatically

C It sends traffic to all servers including the failed one

D It shuts down all servers to prevent errors

💡 Hint

Think about how to keep the website working smoothly even if one server breaks.

The load balancer monitors server health and stops sending traffic to servers that are down. This keeps the service available by using only healthy servers.

❓ Architecture

advanced

Designing a fault-tolerant web app with load balancing

You want to design a web app in Azure that stays online even if one server fails. Which architecture best achieves this?

A Use multiple servers without a load balancer and rely on DNS round robin

B Use multiple servers behind a load balancer with health probes enabled

C Use a single server with a load balancer in front

D Use one server and increase its CPU power

💡 Hint

Think about how to detect server failures and avoid sending traffic to bad servers.

Multiple servers behind a load balancer with health probes ensure traffic only goes to healthy servers. This design provides fault tolerance and high availability.

❓ security

advanced

How does load balancing improve security in cloud apps?

Which security benefit does a load balancer provide for cloud applications?

A It blocks all incoming traffic except from trusted IPs by default

B It encrypts all data stored on servers automatically

C It scans servers for malware continuously

D It hides the internal server IP addresses from users

💡 Hint

Think about what users see when they connect through a load balancer.

Load balancers act as a single point of entry, hiding the real IP addresses of backend servers. This reduces direct attacks on servers.

✅ Best Practice

expert

Choosing the right load balancing method for global users

You have users worldwide accessing your app. Which Azure load balancing method best reduces latency for users?

A Azure Front Door with latency-based routing

B Azure Traffic Manager with geographic routing

C Azure Application Gateway with cookie-based session affinity

D Azure Load Balancer with round-robin distribution

💡 Hint

Consider which service routes users to the closest or fastest server.

Azure Front Door uses latency-based routing to send users to the fastest available endpoint, improving performance for global users.