Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types? (Choose three.)
- A . MySQL
- B . SQL Server
- C . PostgreSQL
- D . Oracle database
A large shopping mall deploys a new video surveillance system. The five-floor building in which the mall is located installed 35 HD cameras to monitor the major exits. The surveillance system is deployed on an ECS instance, which has four 2 TB data disks to store video data.
However, video data grows rapidly and the engineers find that the ECS will run out of storage space within 2 weeks.
In this case,product is thought to be the best solution for addressing the storage challenge while ensuring quick access to historical video data when needed.
- A . Container Service
- B . ECS
- C . OSS
- D . CDN
You are developing a highly available web application using stateless web servers.
Which services are suitable for storing session state data? (Choose two.)
- A . RDS
- B . Table Store
- C . MaxCompute
- D . OSS
In which of the following cases would you need to apply an ICP license? (Choose three.)
- A . Accelerate your Overseas Website in China
- B . Launch your website in China
- C . Launch your online shop in China
- D . Open your office in China
B,C,D
Explanation:
Reference: https://www.alibabacloud.com/icp
In mainland China, the approval requirements for business record filing vary depending on provincial communication management bureaus.
- A . TRUE
- B . FALSE
Which 2 OSS object types can be configured as parameter for object lifecycle management? (Choose two.)
- A . Infrequent access
- B . Snapshot
- C . Archive
- D . Chunk
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?
- A . We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen.
- B . 100% of loads will be assigned to ecs_inst1, and the rest 4 ECS instances will stay idle.
- C . Based on SLB’s working mechanism, approximately 20% of loads will be assigned to ecs_inst1.
- D . Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1.
Server Load Balancer supports protocols like. (Choose four.)
- A . HTTP
- B . HTTPS
- C . TCP
- D . UDP
- E . MPLS
- F . MQTT
A,B,C,D
Explanation:
Comprehensive protocol support – ICMP, TCP, UDP, HTTP, HTTPS,
Reference: https://www.a10networks.com/resources/articles/server-load-balancing
RDS for MySQL is a PaaS, which means after creating the RDS instance, the user does not need to take care of the underlying OS, runtime environment of software packages. These would be taken care of by Alibaba Cloud.
- A . TRUE
- B . FALSE
A company wants to migrate its system to public cloud platform and they choose Alibaba Cloud. The migration process is very important and they want to ensure that everything works right.
Which of the following services can the company choose?
- A . Event Management Service
- B . Aftersales Support
- C . Alibaba Cloud Architecture Design Training
- D . Alibaba Cloud Product Operation Training
Anti-DDoS is one of the major features in Alibaba Cloud Security Service. Many websites have experienced different types of DDoS attacks, an accurate understanding of DDoS is crucial to protecting websites.
Which of the following descriptions about DDoS attack is the most accurate one?
- A . The main target for DDoS attack is the database.
- B . DDoS attack will try to crack the password through a large number of attempts.
- C . The main purpose of DDoS attack is to make the target server unable to provide service normally, which is one of the network attacks that are most difficult to defend.
- D . The purpose of DDoS attack is to steal confidential information.
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 . 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.
- 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 . 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.
- 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.
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 . Anti-DDoS Basic
- B . Anti-DDoS pro
- C . WAF
- D . Server Guard
C
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
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. One of the special characteristics of OSS is its superior data reliability, because of its underlying backup technology and policies.
Which of the following statement about OSS backup is correct?
- A . OSS supports 3 internal data copies, so the data can be manually recovered should there be any problem.
- B . Customer has to safeguard their own data. OSS provides various backup interfaces to facilitate offsite backups.
- C . OSS leverages RAID0+1 configuration of its underlying physical hard disks. There is no impact even if 2 hard disks were to fail simultaneously.
- D . OSS supports 3 internal data copies, no human intervention is required to recover the data when anything goes wrong.
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 . Web hosting
- B . ICP Support
- C . Office registration support
- D . Connect your service with Alibaba Group ecosystem
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 . Running
- B . Created
- C . Stopped
- D . Preparing
A
Explanation:
Reference: http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/DNESS1876951_en-US_intl_181115175025_public_176152014821b385708e5290da11a0fe.pdf (14)
RDS provides whitelist access policies. You can set permitted IP addresses and IP network segments to effectively prevent hackers from attacking the server by port scanning.
- A . TRUE
- B . FALSE
B
Explanation:
Reference: https://apsarastackdocument.oss-cn-hangzhou.aliyuncs.com/01_ApsaraStackEnterprise/V3.5.2- intl-en/Alibaba%20Cloud%20Apsara%20Stack%20Enterprise%201808%20Security%20White paper%20-% 2020180831.pdf
A company uses Alibaba Cloud SLB and Auto Scaling at the same time, hoping this combination can help save O&M cost and provide a stable and reliable system.
However, because they do not have relevant experience, the company’s engineers listed some precautions based on their understanding, and turned the list to you for advice.
As an expert of Alibaba Cloud, you tell them only________is correct.
- A . SLB instances must have Health Check enabled, or they cannot be used together with Auto Scaling
- B . All ECS instances under the same SLB instance must be running on the same operatingsystem
- C . All backend servers under the same SLB instance must be in the same Scaling Group
- D . All backend servers under the same SLB instance must have the same configuration
A
Explanation:
Reference: https://www.alibabacloud.com/blog/comprehensive-upgrade-of-alibaba-cloud-auto-scaling- product_594112
Which three of the following statements about domain name binding to your OSS bucket are correct? (Choose three.)
- A . Your customized domain name will be audited by Alibaba Cloud
- B . your customized domain name need to be put on record in MIIT (Ministry of Industry and Information Technology)
- C . the number of domain names you bind to one bucket can’t exceed 20
- D . mapping a domain name to your bucket endpoint is mandatory
You canan ECS instance’s configuration. (Choose two.)
- A . upgraded
- B . downgraded
- C . downloaded
- D . uploaded
A,B
Explanation:
Reference: https://www.alibabacloud.com/help/doc-detail/25437.htm