ACP-Cloud1問題集、Alibaba Cloud実際の試験問題

質問 1

The backend server pool of an Alibaba Cloud SLB contains multiple ECS instances, which may have different service capacities. To exploit the different service capacities of backend ECS instances, which of the following statements is correct?

A. Choose Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.

B. Choose Round-Robin model and ECS instances with higher capacities will surely be assigned with more requests.

C. Choose Weighted Round Robin mode to set higher weights to ECS instances with higher capacities The higher the weight of the backend ECS instance the higher chance that the instance will receive requests.

D. SLB cannot assign more requests to certain ECS instances.

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 2

Which of the following statements is NOT correct, when comparing RDS with a self-built database?

A. RDS provides automatic backup while self-built databases require you to prepare storage space for backup copies and regularly verify that these copies can be restored.

B. RDS features a high availability of 99 95% while self-built databases require you to implement data protection primary-standby replication, and RAID all by yourself.

C. RDS requires no O&M while self-built database require a dedicated DBA for maintenance, which results in high HR costs.

D. Self-built database support quick deployment and elastic scaling.

正解: D

解説: (PassTest メンバーにのみ表示されます)

質問 3

Alibaba Cloud Server Load Balancer (SLB) provides services for distributing traffic among multiple ECS instances SLB can expand the application system's service capacity through traffic distribution, and improve the system's availability by eliminating SPoFs (Single Points of Failure). Which of the following statements are correct? (Number of correct answers; 2)

A. One of SLB's features is the Health Check. If some of the backend ECS instances are down, whereas other backend ECS instances can still provide services, then the system can continue to work normally.

B. SLB provides a function to automatically synchronize data among backend ECS instances using rsync remote synchronization.

C. When recreating an SLB instance that has an Internet IP address, a new Internet IP address will be assigned to the SLB instance.

D. Before using SLB to provide external services, make sure that you have installed and correctly configured the SLB agent on all of the backend ECS instances.

正解: A,C

解説: (PassTest メンバーにのみ表示されます)

質問 4

A large shopping mall deploys a new video surveillance system. The five-floor building in which the mall is located has installed 35 HD cameras to monitor the major exits. The surveillance system is deployed on an ECS instance, which has four 2 TB data disks to store video data.
However, video data grows so rapidly that the engineers find the ECS will run out of storage space within 2 weeks.
In this case, ___________ product is thought to be the best solution for addressing the storage challenge while ensuring quick access to historical video data when needed.

A. OSS

B. CDN

C. Container Service

D. ECS

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 5

RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.

A. True

B. False

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 6

You have set an alert policy for the disk usage of an ECS instance by using Alibaba Cloud CloudMonitor.
Each measurement cycle lasts for 5 minutes, during which the average disk usage is measured. If the average disk usage exceeds 80% for five consecutive measurement cycles, an alert will be reported. After your average disk usage exceeds 80%, how long will it take to receive an alert?

A. 40 minutes

B. 30 minutes

C. 20 minutes

D. 0 minutes

正解: B

解説: (PassTest メンバーにのみ表示されます)

質問 7

A Virtual Private Cloud (VPC) is an isolated network environment that is completely isolated from each other The following statements about VPC are correct_________. (Number of correct answers: 2)

A. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside.

B. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.

C. Subnets can be divided like the traditional network environment. Different cloud servers within each subnet are connected by the same router and different subnets are interconnected by switches.

D. ECS instances in a VPC use security group firewalls for Layer 2 network access control.

正解: A,B

解説: (PassTest メンバーにのみ表示されます)

質問 8

When you initiate a request via an Open API provided by Alibaba Cloud Elastic Compute Service (ECS), whether the request is initiated successfully or not, the server will return ______________________ as a unique identifier.

A. Responseld

B. Time stamp

C. Requestld

D. Messageld

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 9

By using ApsaraDB for RDS to implement read/write splitting, which of the following can be achieved?
(Number of correct answers 2)

A. Read/write requests to the database are separated.

B. Read requests are distributed to multiple instances.

C. Both read and write requests are distributed to multiple instance

D. Write requests are distributed to multiple instances.

正解: A,B

解説: (PassTest メンバーにのみ表示されます)

質問 10

Alibaba Cloud CloudMonitor is a service that monitors Alibaba Cloud resources and Internet functions currently provided by CloudMonitor? (Number of correct answers: 3)

A. Custom firewall

B. Operation auditing

C. Site monitoring

D. Cloud service monitoring

E. Customized monitoring

正解: C,D,E

解説: (PassTest メンバーにのみ表示されます)

質問 11

SLB is a load balancing service that distributes traffic to multiple cloud servers It provides a wide range of functions to meet the needs of various business scenarios If a user wants to use SLB and ECS instances to deploy two-way authenticated HTTPS websites, the following statement is correct_______.

A. SLB can only support HTTPS one-way authentication

B. SLB can only host SSL certificates, not CA certificates.

C. You need to host server SSL certificates and client CA certificates on SLB

D. SLB can only host CA certificates, not SSL certificate

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 12

Distributed computing breaks down a task into many small parts, then assigns these parts to multiple computing nodes, and eventually puts these computing results together to form the final outcome.

A. FALSE

B. TRUE

正解: B

解説: (PassTest メンバーにのみ表示されます)

質問 13

After creating an RDS for MySQL read-only instance, which of the following CAN NOT be performed by the read-only instance in RDS management console?

A. Intranet/Internet switchover

B. SQL log auditing

C. Specification change

D. Parameter configuration

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 14

Alibaba Cloud ECS provides multiple instance types to meet the needs of different business scenarios. A medium-sized enterprise user wants to use two ECS instances, one to deploy a single Tomcat service and the other one to deploy Memcache. Which of the following configurations is most recommended?

A. Tomcat: 4 cores. 8G, Memcache: 2 cores: 16G

B. Tomcat: 4 cores 8G. Memcache: 2 cores 8G

C. Tomcat: 4 cores: 4G, Memcache: 2 cores: 16G

D. Tomcat: 4 cores, 4G, Memcache: 2 cores, 8G

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 15

Alibaba Cloud Content Delivery Network (CDN) is a distributed network built on top of a base network with edge node server clusters distributed across various regions. If a user finds that the CDN cache hit rate is low, the possible reasons are ____________. (Choose three.)

A. If the cache configuration is inappropriate (e.g., overly short Cache Expiry Time for popular files), this may result in frequent back-to-source operations.

B. Insufficient bandwidth was selected when enabling the CDN service, making the service capacity reach its limit.

C. If the origin site has a large number of dynamic resources or mostly non-cacheable content, this can also lead to frequent back-to-source operations.

D. The HTTP Header setting may cause the cache to fail. In this case, users must check the origin site's
"Cache-Control" and "Expires" settings.

E. When websites have low access traffic and the files are not popular enough, the CDN will receive fewer requests and result in a lower cache hit rate.

正解: A,C,E

解説: (PassTest メンバーにのみ表示されます)

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