Attested ACA-Cloud1 Dumps PDF Resource [2021]
Latest ACA-Cloud1 Actual Free Exam Questions Updated 75 Questions
NEW QUESTION 10
A/Anis a copy of data on a disk at a certain point in time.
- A. image
- B. EIP
- C. template
- D. snapshot
Answer: D
NEW QUESTION 11
Alibaba Cloud Object Storage Service (OSS) is a massive, highly available, secured and cost effective storage service. OSS is superior than self-built storage in all these aspects. Which of the following advantage relates to the high availability of OSS?
- A. Data has to be backed up by customer manually, which is time-consuming and labor-intensive.
- B. The following features are available: Multiple Authentication and Authorization mechanism, Whitelist, Anti- leech URL, and Master-Sub Account
- C. Data Reliability is not less than 99.99999999%. Data is backed up automatically with multiple redundant copies.
- D. Availability actually relies on the underlying hardware, which can break down easily. Once the hard disk malfunctions, it can also lead to permanent data loss.
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/alibaba-cloud-object-storage-vs--ibm-cloud-and-oracle-cloud- equivalent_293464
NEW QUESTION 12
Which of the following statements is true for RDS?
- A. None of the above is true.
- B. Resources are not shared among the databases in the same RDS instance.
- C. Multiple databases can be created in one RDS instance.
- D. Databases with the same name are allowed in the same instance.
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION 13
Cloud disks are reliable because they use __________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a double copy distributed system
- B. a distributed file management system with 3 redundant copies
- C. a Linux file system
- D. a file system
Answer: B
Explanation:
An ECS disk can be used jointly or separately to meet the requirements of different application scenarios. ECS disks are categorized into ephemeral SSD disks and cloud disks. Compared with ephemeral SSD disks, cloud disks are more reliable as they use a triplicate distributed system to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
Reference: http://docs-aliyun.cn-hangzhou.oss.aliyun-inc.com/pdf/ecs-product-introduction-intl-en-2017-03-
24.pdf
NEW QUESTION 14
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 pro
- B. WAF
- C. Anti-DDoS Basic
- D. Server Guard
Answer: B
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 15
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 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.
- B. The purpose of DDoS attack is to steal confidential information.
- C. DDoS attack will try to crack the password through a large number of attempts.
- D. The main target for DDoS attack is the database.
Answer: A
NEW QUESTION 16
Server Load Balancer supports protocols like. (Choose four.)
- A. HTTPS
- B. TCP
- C. HTTP
- D. MQTT
- E. UDP
- F. MPLS
Answer: A,B,C,E
Explanation:
Explanation
Comprehensive protocol support - ICMP, TCP, UDP, HTTP, HTTPS,
NEW QUESTION 17
An enterprise hosts their servers (include both Linux and Windows servers) in a traditional IDC. Every night hackers with IP addresses from many countries try to crack the password of their servers, making the administrator terribly worried about this. However, because of work requirements, the remote management port of these servers must be opened to public network.
The administrator heard that Alibaba Cloud has solutions that can help customers improve the security of their systems. Therefore, he/she wants to migrate the system to Alibaba Cloud. Which of the following functions should the administrator activate in Alibaba Cloud to reduce the possibility of brute force password cracking?
- A. CloudMonitor
- B. Situation Awareness
- C. Anti-DDoS Basic Service
- D. Server Guard
Answer: D
Explanation:
Explanation/Reference: https://www.alibabacloud.com/blog/blogblogalibaba-cloud-server-guard-a-comprehensive- assessment_284390
NEW QUESTION 18
Multiple lower-configuration I/O-optimized ECS instances can be used with ___________ to deliver a high- availability architecture.
- A. Server Load Balancer
- B. Auto Scaling
- C. RDS
- D. OSS
Answer: A
NEW QUESTION 19
Cloud disks are reliable because they use_________to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
- A. a double copy distributed system
- B. a distributed file management system with 3 redundant copies
- C. a Linux file system
- D. a file system
Answer: B
Explanation:
Explanation
An ECS disk can be used jointly or separately to meet the requirements of different application scenarios. ECS disks are categorized into ephemeral SSD disks and cloud disks. Compared with ephemeral SSD disks, cloud disks are more reliable as they use a triplicate distributed system to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.
NEW QUESTION 20
Which of the following is not the database type supported by RDS?
- A. Postgre SQL
- B. MySQL
- C. Oracle database
- D. SQL Server
Answer: C
Explanation:
Reference:
https://aws.amazon.com/rds/features/
NEW QUESTION 21
A video streaming company uses SLB to distribute user requests to 30 ECS instances (the 30 ECS instances have the same configuration). Yet, the company finds that the service traffic soars dramatically every night from 20:00 to 02:00. According to their calculation, the evening traffic is 100% higher than the traffic in other periods of time. To properly respond to user requests, which of the following methods is most preferred from the perspective of cost and implementation simplicity?
- A. Manually create 30 ECS instances using the custom image, and then add them to SLB every night before 20:00 and remove them after 02:00.
- B. Create 30 ECS instances based on the custom image and add them to SLB. Then, configure weights for these ECS instances to respond to user requests every night from 20:00 to 02:00, and reset those weights to zero for other periods of time.
- C. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
- D. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
Answer: D
NEW QUESTION 22
Alibaba Cloud does not support Intranet communication between products that are not in the same region, which does not mean?
- A. ECS instances and other products in different regions, such as ApsaraDB for RDS and OSS instances, cannot communicate with each other on the intranet.
- B. Server Load Balancer cannot be deployed for ECS instances in various regions.
- C. Server Load Balancer can be deployed for ECS instances in various regions.
- D. ECS instances in different regions cannot communicate with each other on the intranet.
Answer: A
NEW QUESTION 23
Which of the following statements is true for RDS?
- A. None of the above is true.
- B. Resources are not shared among the databases in the same RDS instance.
- C. Multiple databases can be created in one RDS instance.
- D. Databases with the same name are allowed in the same instance.
Answer: C
Explanation:
Reference:
https://www.alibabacloud.com/help/doc-detail/26092.htm
NEW QUESTION 24
Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following is not the feature supported by Alibaba Cloud Auto Scaling?
- A. Elastic Self-Diagnostic
- B. Elastic Scale-Out
- C. Elastic Self-Health
- D. Elastic Scale-In
Answer: A
NEW QUESTION 25
A/An _________________ is a copy of data on a disk at a certain point in time.
- A. image
- B. EIP
- C. template
- D. snapshot
Answer: D
NEW QUESTION 26
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. Auto Scaling
- B. RDS
- C. Server Load Balancer
- D. OSS
Answer: A
NEW QUESTION 27
Multiple lower-configuration I/O-optimized ECS instances can be used with to deliver a high- availability architecture.
- A. Server Load Balancer
- B. Auto Scaling
- C. RDS
- D. OSS
Answer: A
NEW QUESTION 28
An enterprise hosts their servers (include both Linux and Windows servers) in a traditional IDC. Every night hackers with IP addresses from many countries try to crack the password of their servers, making the administrator terribly worried about this. However, because of work requirements, the remote management port of these servers must be opened to public network.
The administrator heard that Alibaba Cloud has solutions that can help customers improve the security of their systems. Therefore, he/she wants to migrate the system to Alibaba Cloud. Which of the following functions should the administrator activate in Alibaba Cloud to reduce the possibility of brute force password cracking?
- A. CloudMonitor
- B. Situation Awareness
- C. Anti-DDoS Basic Service
- D. Server Guard
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/blog/blogblogalibaba-cloud-server-guard-a-comprehensive- assessment_284390
NEW QUESTION 29
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. Managed Security Service
- B. Anti-DDoS Service Basic
- C. Anti-DDoS Service Pro
- D. Situation Awareness
Answer: B
Explanation:
Explanation
Explanation/Reference: https://www.alibabacloud.com/product/anti-ddos
NEW QUESTION 30
Which of the following statements about file uploading to OSS strategy is not correct?
- A. All file uploading method provided by Alibaba Cloud OSS service will support resuming from break point.
- B. If you are using OSS to store some log files which are continuously being updated, you better choose streaming method to be able to append to one existing object instead of overwriting.
- C. If you are uploading some small files (<1m), you can choose using put method to be able finish uploading in one http request.
- D. If you need to upload very large file you better use multi-part uploading to get the capability of resuming from break point.
Answer: B
NEW QUESTION 31
Server Load Balancer can help protect fromattack.
- A. SQL injection
- B. Ransomware
- C. DDoS
- D. Virus
Answer: C
NEW QUESTION 32
Server Load Balancer can help protect from ___________________ attack.
- A. SQL injection
- B. Ransomware
- C. DDoS
- D. Virus
Answer: C
Explanation:
Explanation/Reference: https://www.alibabacloud.com/help/doc-detail/27539.htm
NEW QUESTION 33
A video streaming company uses SLB to distribute user requests to 30 ECS instances (the 30 ECS instances have the same configuration). Yet, the company finds that the service traffic soars dramatically every night from 20:00 to 02:00. According to their calculation, the evening traffic is 100% higher than the traffic in other periods of time. To properly respond to user requests, which of the following methods is most preferred from the perspective of cost and implementation simplicity?
- A. Manually create 30 ECS instances using the custom image, and then add them to SLB every night before 20:00 and remove them after 02:00.
- B. Create 30 ECS instances based on the custom image and add them to SLB. Then, configure weights for these ECS instances to respond to user requests every night from 20:00 to 02:00, and reset those weights to zero for other periods of time.
- C. Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.
- D. Configure Auto Scaling appropriately to automatically add or reduce ECS instances.
Answer: D
Explanation:
Reference:
https://www.alibabacloud.com/product/auto-scaling
NEW QUESTION 34
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