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Alibaba ACA-Cloud1 Exam Practice Questions (P. 3)

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Question #11
When using Alibaba Cloud SLB, you can set different weights for backend ECS instances. The higher the weight of a backend ECS instance, the more load will be assigned to it. If an SLB instance has 5 ECS instances in the backend server pool, all of which are healthy. Among these 5 ECS instances, the weight of ecs_inst1 is set to 100. Which of the following statements is correct?
  1. A
    We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen.
  2. B
    100% of loads will be assigned to ecs_inst1, and the rest 4 ECS instances will stay idle.
  3. C
    Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1.
  4. D
    Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1.

Correct Answer:
A

Question #12
Server Load Balancer can help protect from ___________________ attack.
  1. A
    DDoS
  2. B
    Virus
  3. C
    Ransomware
  4. D
    SQL injection

Correct Answer:
A
Reference:
https://www.alibabacloud.com/help/doc-detail/27539.htm

Question #13
Which of the following statements to OSS bucket is not correct?
  1. A
    Every user can create more than one bucket
  2. B
    Bucket name can be changed after creation
  3. C
    Every bucket should have a unique name
  4. D
    There is no limitation to objects number inside one bucket

Correct Answer:
B
Reference:
https://www.alibabacloud.com/help/doc-detail/31885.htm?spm=a2c63.p38356.a3.3.43f03bb9a3KjLl

Question #14
www.company.com is a newly launched social portal for exchanging automotive information. The portal is based on PHP, including 10GB of images, and some
JavaScripts files. Currently one single ECS instance is used to host all the application content as well as a MySQL database. With the growing number of users, the portal is getting slower to load images or respond to user requests. Moreover, there will be additional 50GB image content uploaded to the portal every week.
Which combination of Alibaba Cloud services below can help resolve the storage and performance issue at the same time?
  1. A
    OSS + CDN combination
  2. B
    OSS + MTS combination
  3. C
    OSS + RDS combination
  4. D
    OSS + ECS combination

Correct Answer:
D

Question #15
Which method is not supported by OSS to create a bucket?
  1. A
    through OSS API/SDK
  2. B
    through ECS instance filesystem directory operation
  3. C
    through oss cmd tool
  4. D
    through cloud console

Correct Answer:
C

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