200-901 Question 185
Select 3A company is deploying a web application in a cloud environment. To ensure high availability and secure access to the application, they have configured a load balancer and a firewall in this architecture. Which of the following actions should the DevOps team take to ensure the system is both scalable and secure?
- A
Configure the load balancer to distribute traffic across multiple backend servers based on health checks.
- B
Set up the firewall to block traffic originating from unapproved IP addresses.
- C
Disable the firewall to improve the speed of traffic routing through the load balancer.
- D
Implement SSL/TLS termination at the load balancer to encrypt and decrypt traffic.
- E
Route all incoming traffic directly to a single backend server for simplicity.
Show answer and explanation
Correct answers: A, B, D
Explanation
To ensure the web application is both scalable and secure, the load balancer should distribute traffic across healthy servers, the firewall should block unauthorized access, and SSL/TLS termination should be implemented to secure communication. These measures collectively enhance availability, performance, and security, which are critical components of a robust cloud architecture.
- A. Correct.
Configuring the load balancer to distribute traffic based on health checks ensures high availability and scalability by directing traffic to healthy backend servers.
- B. Correct.
Setting up the firewall to block traffic from unapproved IP addresses improves security by preventing unauthorized access to the application.
- C. Incorrect.
Disabling the firewall would significantly reduce security and expose the application to potential threats, which is not a recommended practice.
- D. Correct.
Implementing SSL/TLS termination at the load balancer ensures secure communication by encrypting and decrypting traffic, which is critical for protecting sensitive data.
- E. Incorrect.
Routing all traffic to a single backend server eliminates the benefits of scalability and high availability, which are core purposes of using a load balancer.