100% Pass Top-selling ACA-Operator Exams - New 2021 Alibaba Cloud Pratice Exam
Alibaba System Operator Dumps ACA-Operator Exam for Full Questions - Exam Study Guide
NEW QUESTION 24
Which database utility is suitable for database migration?
- A. DMS
- B. DBS
- C. DTS
- D. DAS
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/176063.htm
NEW QUESTION 25
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?
- A. VPN Gateway
- B. CEN (Cloud Enterprise Network)
- C. Express Connect
- D. NAT Gateway
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/59870.htm
NEW QUESTION 26
Which of the following options are correct for Multipart Upload and Resumable Upload in Object Storage Service (OSS)? (Number of correct answers: 3)
- A. Use Multipart Upload to upload multiple parts of a file in parallel to speed up the upload process
- B. Multipart Upload is usually used when the size of the file to be uploaded is large
- C. If the upload fails due to an accident during the uploading of fragments, you need to upload all the fragments again
- D. After an upload is interrupted, the portions of the file which have successfully uploaded prior to the interruption will be saved in the OSS bucket
Answer: A,B,D
NEW QUESTION 27
When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)
- A. Apply indexing to fields of fixed length (preferably not long fields).
- B. Adhere to the rightmost prefix principle when using composite indexes
- C. Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.
- D. Applies indices to fields to contain many records.
- E. A table should not contaiiAiore than 6 indexed fields.
Answer: A,C,E
NEW QUESTION 28
________________ is a fully-managed event-driven computing service that allows you to run code in an elastic and reliable way?
- A. Function Compute
- B. Elastic Compute Service (ECS)
- C. Serverless Workflow
- D. Batch Compute
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/52895.htm
NEW QUESTION 29
Cloud Config tracks configuration changes of your resources and evaluates configuration compliance.
- A. True
- B. False
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/127388.htm
NEW QUESTION 30
Serverless Workflow allow you to orchestrate distributed tasks in sequence, branch, and parallel modes, and ensure that tasks are reliably coordinated according to your workflow logic. Which of the following service integration modes is not supported by Serverless Workflow?
- A. Waiting for callback mode
- B. Request response mode
- C. Asynchronous mode
- D. Synchronization mode
Answer: C
Explanation:
Explanation
Asynchronous mode is only possible with the combination of MNS
service.https://static-aliyun-doc.oss-cnhangzhou.aliyuncs.com/download%2Fpdf%2F122479%2FBest_Practices_
NEW QUESTION 31
Alibaba Cloud Log Service allows you to store and search logs from a variety of sources, but has no built-in visualization capabilities.
- A. False
- B. True
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/102530.htm
NEW QUESTION 32
Tracing Analysis is used to analyze and diagnose performance bottlenecks in a distributed application architecture and make microservice development and diagnostics more efficient.
- A. True
- B. False
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/90277.htm
NEW QUESTION 33
Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events?
(Number of correct answers: 2)
- A. Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts
- B. Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms
- C. Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms
- D. Custom Events is used for collection of continuous event type data, queries, and alarms
Answer: C,D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
NEW QUESTION 34
Which of the following methods can NOT be used for operating Alibaba Cloud Elastic Compute Service (ECS) instances?
- A. CLI
- B. CloudFormation
- C. Console
- D. SDK
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/25422.htm
NEW QUESTION 35
Your company decided to replicate the whole cloud environment in another region and use it as a cross-region failover in disaster recovery scenarios.
Your current environment includes Elastic Compute Service (ECS) instances, Server Load Balancer (SLB) instances and Relational Database Service (RDS) instances. Which of the following statements is correct?
- A. You can provision multiple SLB instances in multiple regions, thereby leveraging automatic high availability across regions
- B. You can provision multiple ECS instances in multiple regions, thereby leveraging automatic high availability across regions
- C. You can use DNS to resolve domain names to the IP addresses of multiple SLB instances running in different regions
- D. You can use DNS to resolve domain names to the IP addresses of multiple ECS instances running in different regions
Answer: C
Explanation:
Explanation
https://cloudacademy.com/course/alibaba-server-load-balancer-1066/alibabas-high-availability/
NEW QUESTION 36
Which of these metrics are collected by CloudMonitor's Host Monitoring function? (Number of correct answers: 3)
- A. ECS network I/O
- B. Running processes on the ECS instance
- C. Storage space used by OSS buckets
- D. CPU status of the ECS instance
Answer: A,B,D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
NEW QUESTION 37
Alibaba Cloud ActionTrail is a service that monitors and records the actions of your Alibaba Cloud account, including the access to and use of cloud products and services through the Alibaba Cloud console, API operations, and SDKs.
- A. True
- B. False
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/28804.htm
NEW QUESTION 38
Which of these are important concepts in Terraform's configuration language, HCL? (Number of correct answers: 3)
- A. Service Mesh
- B. Variable
- C. Resource
- D. Provider
Answer: B,C,D
NEW QUESTION 39
How does Cloud Config get permission to gather information about other Alibaba Cloud services?
- A. It gets automatic permission to access everything, because it is an Alibaba Cloud service
- B. By storing a copy of your password
- C. An Access Key
- D. A RAM Role
Answer: D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/156642.htm
NEW QUESTION 40
Alibaba Cloud RocketMQ is typically used in scenarios where message publishing and consumption performance requirements are high. Which of the following are supported message types in Alibaba Cloud RocketMQ? (Number of correct answers: 3)
- A. Batched message
- B. Scheduled message
- C. Retried message
- D. Ordered message
- E. Transactional message
Answer: B,D,E
NEW QUESTION 41
Which of these is NOT a function of CloudMonitor?
- A. Automatically take remedial action when an alarm triggers
- B. Set alarm rules for any of CloudMonitor's metrics
- C. Set notification methods for different alarms
- D. Set the alarm rule effective period (the time during which the alarm may trigger)
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
NEW QUESTION 42
Which Alibaba Cloud service is used to manage cloud computing resources including the deployment?
- A. Resource Orchestration Service (ROS)
- B. Operation Orchestration Service (OOS)
- C. Resource Access Management (RAM)
- D. Maintenance Orchestration Service (MOS)
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/28852.htm
NEW QUESTION 43
Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)
- A. Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console
- B. The STS service supports the use of both HTTP and HTTPS protocols
- C. When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made
- D. A STS request consists of an access address, communication protocol, request method, request parameters and character encoding
Answer: A,C,D
NEW QUESTION 44
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