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NEW QUESTION 10
Company B builds a music download website based on OSS and ECS, and users can download mp3 files after registering for the website. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, engineers find that many user download requests are raised from search engine but not the website itself. In this case, which of the following measures is thought to be able to address this issue.
- A. Introduce SLB for extra protection.
- B. Limits access sources by configuring "Anti-leech settings" of OSS bucket attributes.
- C. Migrates music files from the OSS to the data disks for ECS instances.
- D. Changes the website access mode to HTTPS.
Answer: B
Explanation:
Explanation/Reference: http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNOSS11828897_en- US_intl_190202150837_public_b55986256a50380c526a35e863023ec9.pdf (55)
NEW QUESTION 11
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. The instance and the scaling group must be in the same region but not necessarily the same zone.
- B. The instance and the scaling group must be in the same region and zone.
- C. 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.
- D. The instance and the scaling group can be in different regions and zones.
Answer: B
NEW QUESTION 12
feature in Server Load Balancer means that it can forward the access requests from a single user to the same ECS instance within a certain period to ensure session continuity.
- A. least connections scheduling
- B. health check
- C. Weighted Round Robin
- D. session persistence
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/55202.htm
NEW QUESTION 13
ECS is a highly flexible service. It can be used independently as a simple web server, or used with other Alibaba Cloud products, such as OSS and CDN, to provide advanced solutions. ECS can be used in applications such as: ______________. (Choose four.)
- A. simple web applications
- B. Databases
- C. no limited online storage
- D. Official corporate websites
- E. large-traffic apps
Answer: A,B,D,E
Explanation:
Explanation/Reference:
NEW QUESTION 14
Alibaba Cloud China Connect is a service that can help international companies do business in China. Which of the following services is not included in China Connect?
- A. Office registration support
- B. ICP Support
- C. Web hosting
- D. Connect your service with Alibaba Group ecosystem
Answer: D
NEW QUESTION 15
You built an online shop using Alibaba Cloud services (ECS, RDS, ...etc.) and very soon you'll have a campaign that every customer that invites 3 friends will get a 50% off coupon. To avoid HTTP flood attacks and ensure only genuine customers (not bots) joining the event, which security product should you choose?
- A. WAF
- B. Server Guard
- C. Anti-DDoS Basic
- D. Anti-DDoS pro
Answer: A
Explanation:
After adding your website to the WAF protection list, you can enable HTTP Flood protection and select an appropriate protection mode for the website Reference: https://www.alibabacloud.com/help/doc-detail/43443.htm
NEW QUESTION 16
You can retrieve data directly from an ECS Image and use it right away.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 17
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following application scenarios are suitable for Auto Scaling?
(Choose three.)
- A. When an ECS instance reacts abnormally in a scaling group, Auto Scaling will create a new ECS instance to take over the computing tasks conducted by the faulty instance.
- B. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be reduced automatically to save costs when business needs drop.
- C. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be added seamlessly to address traffic peaks and surges.
- D. You want to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be automatically upgraded (with more Memory, more powerful CPU) when needed.
Answer: A,B,C
NEW QUESTION 18
Your friend purchases some Alibaba Cloud resources and uses them to build an online training website. Before the site goes online, your friend wants to perform some performance tests but doesn't know how to do it. In this case, which of the following services can help?
- A. Load and Performance Testing Service
- B. Support Ticket Service
- C. After-Sales Support Service
- D. None Of The Above
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/support/after-sales
NEW QUESTION 19
Which of the following statements to OSS bucket is not correct?
- A. Every bucket should have a unique name
- B. There is no limitation to objects number inside one bucket
- C. Every user can create more than one bucket
- D. Bucket name can be changed after creation
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/31885.htm?spm=a2c63.p38356.a3.3.43f03bb9a3KjLl
NEW QUESTION 20
Some applications may encounter large traffic fluctuations within a short period. When ECS is used with__________, the number of ECS instances is automatically adjusted based on traffic.
- A. RDS
- B. Auto Scaling
- C. OSS
- D. Server Load Balancer
Answer: B
NEW QUESTION 21
A customer uses Alibaba Cloud Auto Scaling service and creates a scaling group. He/she sets the "Minimum number of instances" to 6 and "Maximum number of instances" to 8.
After correctly configuring scaling settings, the customer adds a scaling rule "Adjust to 10 ECS instances", and creates a scheduled task based on this rule.
And then, the customer checks the scaling group and see it already contains 6 valid ECS instances, he/she then enables this scaling group immediately.
How many ECS instances are left in the scaling group when the scheduled task is activated once?
- A. Eight
- B. Ten
- C. Five
- D. Six
Answer: C
NEW QUESTION 22
___________ feature in Server Load Balancer means that it can forward the access requests from a single user to the same ECS instance within a certain period to ensure session continuity.
- A. least connections scheduling
- B. health check
- C. Weighted Round Robin
- D. session persistence
Answer: D
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/55202.htm
NEW QUESTION 23
Alibaba Cloud provides anti-DDoS products of different levels. If the service availability needs to be kept at 99.9% or higher under DDoS attacks, which of the following is the MOST suitable product?
- A. Anti-DDoS Service Basic
- B. Situation Awareness
- C. Managed Security Service
- D. Anti-DDoS Service Pro
Answer: A
NEW QUESTION 24
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding existing ECS instances into the scaling group, whose status however must be _________.
- A. Preparing
- B. Running
- C. Stopped
- D. Created
Answer: B
Explanation:
Explanation/Reference: http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNESS1876951_en- US_intl_181115175025_public_176152014821b385708e5290da11a0fe.pdf (14)
NEW QUESTION 25
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A. Open your office in China
- B. Launch your online shop in China
- C. Accelerate your Overseas Website in China
- D. Launch your website in China
Answer: A,B,D
Explanation:
Reference:
https://www.alibabacloud.com/icp
NEW QUESTION 26
Server Load Balancer can help protect from ___________________ attack.
- A. DDoS
- B. Ransomware
- C. SQL injection
- D. Virus
Answer: A
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/27539.htm
NEW QUESTION 27
Alibaba Cloud Monitor service stems from years of experience of server monitoring technology in Alibaba group, leveraging the powerful data analysis capability of Alibaba cloud computing platform to provide monitoring service for various clients' applications and servers. A user receives an alert saying that the IOPS utilization rate for an ECS instance exceeds 80%. Yet, he/she is not sure how to handle the situation, the user may obtain help from Alibaba Cloud through the below methods? (Choose three.)
- A. Open a ticket to Alibaba Cloud help desk.
- B. Check ECS or CloudMonitor product documents.
- C. Look for answers in Alibaba Cloud forum.
- D. You cannot obtain any help from Alibaba Cloud.
Answer: A,B,C
NEW QUESTION 28
Which of the following statements is true for RDS?
- A. Multiple databases can be created in one RDS instance.
- B. Databases with the same name are allowed in the same instance.
- C. None of the above is true.
- D. Resources are not shared among the databases in the same RDS instance.
Answer: A
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION 29
Which of the following statements to OSS bucket is not correct?
- A. Every bucket should have a unique name
- B. There is no limitation to objects number inside one bucket
- C. Every user can create more than one bucket
- D. Bucket name can be changed after creation
Answer: D
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/31885.htm?spm=a2c63.p38356.a3.3.43f03bb9a3KjLl
NEW QUESTION 30
You can create a custom image for ECS using which of the followings? (Choose two.)
- A. Data disk snapshot
- B. CPU snapshot
- C. System disk snapshot
- D. Memory snapshot
Answer: A,C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/25460.htm
NEW QUESTION 31
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