In the actual microservice guidance, which of the microservices in the following diagram can be published in grayscale?

Which of the following scenarios is not suitable for HDFS?

A customer needs to run graphics advertising and dyeing services, and needs to perform graphics rendering, video encoding and decoding, etc., which cloud product should be recommended to the customer?

Which of the following descriptions about Kubernetes is wrong?

What technology is used for pyrotechnic detection?