Question 1

A developer has written a web application using a microservice architecture, in such an architecture, the client (web browser or mobile application) first initiates a request. The request first reaches the load balancer, then goes through an authentication service, a billing service, then requests a resource, and finally a result is returned. How many spans does such a call chain consist of?

Options :

A : 3

B : 4

C : 5

D : 6

Answer: C

Question 2

Which of the following services is used to establish private network connections between virtual private

clouds (VPCs) in different regions, or between VPCs and data centers?

Options :

A : CEN (Cloud Enterprise Network)

B : Express Connect

C : VPN Gateway

D : NAT Gateway

Answer: A

Question 3

Which Alibaba Cloud service is used to manage cloud computing resources including the deployment?

Options :

A : Operation Orchestration Service (OOS)

B : Maintenance Orchestration Service (MOS)

C : Resource Orchestration Service (ROS)

D : Resource Access Management (RAM)

Answer: C

Question 4

Which of these metrics are collected by CloudMonitor’s Host Monitoring function? (Number of correct answers: 3)

Options :

A : CPU status of the ECS instance

B : Running processes on the ECS instance

C : Storage space used by OSS buckets

D : ECS network I/O

Answer: A,B,D

Question 5

Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with ECS? (Number of correct answers: 3)

Options :

A : Quickly build a personal blog website

B : Quickly build a small e-commerce website

C : Quickly build serverless site using Function Compute

D : Set up a NoSQL database service

E : Quickly build a personal, learning, or test environment

Answer: A,B