H13-821_V3.5

H13-821_V3.5 practice questions, page 2 of 3, with answer review and explanations.

Question 6

To process high-quality images and videos as well as big data analytics, memory-optimized Elastic Cloud Servers (ECSs) are recommended, such as M8, M7, and M5 ECSs.

  1. TRUE
  2. FALSE

Question 7

A user purchased an Elastic Cloud Server (ECS) with the c6s.6xlarge.2 flavor on Huawei Cloud. Which of the following statements about this ECS flavor are true? (Choose all that apply.)

  1. There are 24 vCPUs.
  2. There is 64 GiB of memory.
  3. There is 48 GiB of memory.
  4. There are 12 vCPUs.

Question 8

A customer purchased a general computing-plus Elastic Cloud Server (ECS) with the c9.xlarge.2 flavor on Huawei Cloud. This means the ECS has 4 vCPUs and 16 GiB of memory.

  1. TRUE
  2. FALSE

Question 9

Which of the following statements are true about how databases are classified? (Choose all that apply.)

  1. Databases can be classified as either open-source or commercial, depending on the business model.
  2. Databases can be classified as either relational or non-relational, depending on their data structure.
  3. Databases can be classified as either Online Transaction Processing (OLTP) or Online Analytical Processing (OLAP), depending on the applications they are used for.
  4. Databases can be classified as either storage or computing, depending on their architecture.

Question 10

After read replicas are created, they can handle read-intensive workloads for the primary instance, reducing its load. Which of the following statements are true about high-availability (HA) read replicas? (Choose all that apply.)

  1. An HA read replica must have the same configuration as its primary instance. Otherwise, it will be unavailable.
  2. Read replicas include single-node read replicas and HA read replicas.
  3. If the physical server where the primary read replica resides fails, the standby read replica automatically takes over workloads from the primary read replica.
  4. If a single-node read replica fails, the database proxy routes requests to other read replicas or the primary instance.