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NEW QUESTION 16
Alibaba Cloud Object Storage Service (OSS) provides multiple file uploading modes for different scenarios, which are___________.
(Number of correct answers: 2)
- A. Direct upload from the OSS management console no matter how large the file is
- B. Uploading using the API
- C. Directly copying to/from OSS using portable disks
- D. Upload using the SDK
Answer: A,C
NEW QUESTION 17
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. Write requests are distributed to multiple instances.
- C. Read requests are distributed to multiple instances.
- D. Both read and write requests are distributed to multiple instance
Answer: B,D
NEW QUESTION 18
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. SLB cannot assign more requests to certain ECS instances.
- B. 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.
- C. Choose Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.
- D. Choose Round-Robin model and ECS instances with higher capacities will surely be assigned with more requests.
Answer: B
NEW QUESTION 19
OSS supports multi-part uploading for large files, namely dividing a large file into multiple parts and uploading them in order. This function is suitable for scenarios such as uploading large files or uploading files with poor connectivity.
After completing all the multi-part uploading tasks, if you forget to invoke the "Complete Multipart Upload" interface, there will be fragment files left in OSS, occupying bucket storage space-To facilitate deleting those files, OSS provides the________function.
- A. Bucket clearing
- B. Fragment management
- C. OpenAPI batch deletion
- D. Online batch deletion
Answer: D
NEW QUESTION 20
A startup video streaming company deploys its service on Alibaba Cloud Elastic Compute Service (ECS) Christmas is coming soon and the CEO knows that they need to prepare more computing resources However, they don't want to purchase a large number of Elastic Compute Service (ECS) instances tor a long period of time. Instead, they want to buy ECS instances for a short period of time and release them after the event is over. Which of the following billing methods of ECS is the most suitable?
- A. Pay-As-You-Go with Savings Plan
- B. Subscription with Reserved Instances
- C. Pay-As-You-Go with Reserved Instances
- D. Pay-As-You-Go Only
Answer: A
NEW QUESTION 21
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.
Answer: A,C
NEW QUESTION 22
Alibaba Cloud Object Storage Service (OSS) is a cloud storage service that features massive capacity, outstanding security, low costs, and high reliability. In an OSS bucket, all elements are stored as________.
- A. Stubs
- B. Objects
- C. Hashes
- D. Keys
Answer: B
Explanation:
OSS does not use a hierarchical structure for objects, but instead uses a flat structure. All elements are stored as objects in buckets. To use OSS in the same manner in which local file systems are used, you can configure Cloud Storage Gateway (CSG).
https://www.alibabacloud.com/help/doc-detail/31817.htm
NEW QUESTION 23
Once ECS is created, you can't change its private IP address anymore.
- A. True
- B. False
Answer: A
NEW QUESTION 24
Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?
- A. Supports warning when source and destination has some unresolved conflict found.
- B. Supports database schema replication between instances.
- C. Supports all of the above functions.
- D. Supports migrating MySQL databases from external sources.
Answer: B
NEW QUESTION 25
You have created two Alibaba Cloud VPCs in two different regions To establish communication between these two VPCs via the Intranet, you can________.
- A. Use CEN to establish communication between VPCs
- B. No operation is needed, as VPCs under the same account are connected through the Intranet by default
- C. Use the VRouter to create a new route table to enable the communication
- D. Create a new access rule through the Security Group to enable the communication
Answer: A
NEW QUESTION 26
For ECS and RDS instances under different Alibaba Cloud accounts but in the same region, which of the following statements is NOT correct for migrating self-built MySQL databases (running on ECS) to RDS?
- A. The data can be imported via the public network.
- B. The data cannot be migrated.
- C. The data can be imported by running mysqldump.
- D. The data can be imported via the Intranet
Answer: C
NEW QUESTION 27
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies It supports adding an existing ECS instance into the scaling group but imposes certain requirements on instance region In this case, which of the following statements is true?
- A. Each scaling group can span up to two regions. After adding the ECS instance, the number of regions of all the ECS instances in the scaling group must be no greater than two.
- B. The instance and the scaling group can be in different regions and zones.
- C. The instance and the scaling group must be in the same region but not necessarily the same zone.
- D. The instance and the scaling group must be in the same region and zone.
Answer: C
NEW QUESTION 28
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 CA certificates, not SSL certificate
- C. You need to host server SSL certificates and client CA certificates on SLB
- D. SLB can only host SSL certificates, not CA certificates.
Answer: A
NEW QUESTION 29
Alibaba Cloud SLB can distribute user requests to backend ECS instances. These ECS instances must have the same specification (CPU, Memory)
- A. True
- B. False
Answer: A
NEW QUESTION 30
A new media company uses a mobile app to provide news and information services. They utilize Auto Scaling to add/reduce ECS instances dynamically to address service traffic spikes.
Based on the estimation of their service and technical personnel the company thinks they require 10 ECS instances during idle hours and 10 to 20 ECS instances (dynamically adjusted) during some busy hours, which are normally from 07:30 to 09:00 and from 18:30 to 20:00 In the scaling group; they set the "Minimum number of instances" to 10 and "Maximum number of instances" to 20.
To simplify deployment tasks and save costs, which of the following scaling modes should they choose?
- A. Scheduled mode
- B. Healthy mode
- C. Fixed quantity mode
- D. Event-triggered mode
Answer: C
NEW QUESTION 31
Object Storage Service (OSS) supports sub accounts, and you can allocate access permissions to different buckets for each sub account.
- A. True
- B. False
Answer: B
NEW QUESTION 32
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