Microservices API Gateway and Management 2

Question 1

Which API gateway pattern provides a tailored API for each client type, such as separate endpoints for web and mobile apps?

Accepted Answer

Backend for Frontend (BFF)

Answer

The Backend for Frontend pattern creates a dedicated gateway per client type to optimize responses for each.

Question 2

What is the primary purpose of request aggregation in an API gateway?

Accepted Answer

To combine multiple downstream service calls into a single client response

Answer

Request aggregation lets the gateway fan out to several services and merge results, reducing client round trips.

Question 3

Which gateway feature limits the number of requests a client can make in a given time window?

Accepted Answer

Rate limiting

Answer

Rate limiting throttles client requests to protect backend services from overload.

Question 4

When a gateway terminates TLS and forwards plain HTTP internally, this is known as:

Accepted Answer

TLS termination

Answer

TLS termination decrypts incoming traffic at the gateway, offloading crypto work from backend services.

Question 5

What does a circuit breaker in an API gateway prevent?

Accepted Answer

Repeated calls to a failing downstream service

Answer

A circuit breaker stops forwarding requests to an unhealthy service, allowing it to recover and avoiding cascading failures.

Microservices Practice Test