[2023年05月] 検証済みAlibaba Cloud ACP-Cloud1リアル豪華お試しセット試験問題集でPDF
ACP-Cloud1問題集PDF最新 [2023年最新] 究極の学習ガイド
質問 17
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. Pay-As-You-Go Only
- C. Pay-As-You-Go with Reserved Instances
- D. Subscription with Reserved Instances
正解: A
質問 18
Many websites have suffered DDoS attacks of different volumes. Therefore, accurate understanding of DDoS attacks is critical to website security protection. Which of the following statements about DDoS attacks is the MOST accurate?
- A. DDoS attacks primarily target databases.
- B. A DDoS attacks crack the server's logon password by means of a massive number of attempts.
- C. The main purpose of a DDoS attack is to prevent the target server from providing normal services. Currently, the DDoS attack is one of the strongest and most indefensible website attacks.
- D. The purpose of a DDoS attack is to steal confidential information.
正解: C
質問 19
If an administrator often needs to manage multiple ECS instances in an Alibaba Cloud VPC through the Internet Which of the following solutions can meet this need at low costs and without affecting system security.
- A. None of these answers are correct.
- B. Bind an EIP to each of the ECS instances, and Jog on to each of these ECS instances to manage them.
- C. Modify the VPC Security Group policy, to allow access from the Internet.
- D. Choose an ECS instance from VPC and make it as the bastion host And then, apply an EIP and bind it to this ECS instance. After that the administrator can manage other ECS instances through this bastion host.
正解: A
質問 20
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 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. Based on request level parameters of external requests, all requests with a request level parameter of 100 will be transferred to ecs_inst1
- B. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1
- C. We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen
- D. 100% of loads will be assigned to ecs__inst1, and the remaining 4 ECS instances will stay idle
正解: C
質問 21
Once ECS is created, you can't change its private IP address anymore.
- A. True
- B. False
正解: A
質問 22
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. Upload using the SDK
- D. Directly copying to/from OSS using portable disks
正解: A,D
質問 23
The difference between public and private Server Load Balancers (SLBs) is that private SLBs connect to their backend ECS instances using the private network (Intranet) while public SLBs connect to their backend ECS instances using the public network (Internet).
- A. True
- B. False
正解: B
質問 24
When the "'Obtain the Visitor's Real IP Address" function is enabled in Alibaba Cloud SLB For layer 7 services, you can obtain the real IP addresses of visitors through the______________field in HTTP header
- A. Connection
- B. X-Forwarded-For
- C. Authorization
- D. Etag
正解: A
質問 25
Different Alibaba Cloud VPCs are completely isolated from each other.
By default, the VPCs cannot communicate with each other over Intranet, but you can establish VPN connections via the Internet to achieve interconnection between VPCs.
- A. True
- B. False
正解: A
質問 26
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. Hashes
- B. Stubs
- C. Objects
- D. Keys
正解: C
解説:
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
質問 27
After creating an RDS for MySQL read-only instance, which of the following CAN NOT be performed by the read-only instance in RDS management console?
- A. Parameter configuration
- B. SQL log auditing
- C. Intranet/Internet switchover
- D. Specification change
正解: A
質問 28
A large enterprise wants to migrate the entire business system to Alibaba Cloud to save the overall IT procurement and O&M costs From the security aspect, the company requires that
1. Must support secured remote O&M because the administrator often takes business trips.
2. Networks between subsystems should be isolated because subsystems are independently used by different departments Which of the followings should be used together to meet the company's requirements? (Number of correct answers: 3)
- A. Create multiple ECS instances in the VPC to install subsystems of different departments- Allocate only Intranet IP addresses to all ECS instances, and deploy them in the same security groups.
- B. Enable the VPN on the bastion host (or directly use the VPN image on Alibaba Cloud Marketplace). The administrator uses VPN encrypted communication during O&M.
- C. Build an independent ECS instance as the bastion host or remote logon and O&M, and authorize the bastion host to access ECS instances running other subsystems.
- D. Use the security group function of the ECS instance, and respectively deploy ECS instances running different subsystems to independent security groups.
正解: A,B,C
質問 29
Company A constructed a sales management platform using three Elastic Compute Service (ECS) instances. One of the instances runs MySQL, and is used as the database server. The other two instances are used as Web servers After some time, the number of employees in Company A dramatically increases, leading to higher sales volumes At the same time, the platform response speed is gradually decreasing too.
According to the report from CloudMonitor, the average CPU utilization rate of the two Web servers exceeds 70%, and database load
reaches 75% Company A can select Alibaba Cloud_________ services.to cope with the issue and optimize the performance. (Number of correct answers: 2)
- A. Incorporate Server Load Balancer (SLB) and add additional ECS instances to relieve the load on existing ECS instances
- B. Replace the self-built MySQL database with ApsaraDB for RDS to obtain better database performance, and utilize RDS read-only instances to handle read-only requests
- C. Use Content Delivery Network (CDN) to enhance content loading speed
- D. Import database data into Object Storage Service (OSS) to share the storage pressure on the platform
正解: A,B
質問 30
Object Storage Service (OSS) supports access logging. A bucket owner can activate access logging for their buckets in the OSS management console. When access logging is activated for bucket A, OSS automatically accesses the request logs for this bucket (in hours) and generates and writes an object to the user-specified bucket B according to certain naming rules. Which of the following statements is true for OSS logging?
- A. Buckets A and B must be different buckets.
- B. Buckets A and B must be the same bucket.
- C. Buckets A and B can be separate buckets (or a single bucket) but they must belong to the same user
- D. Buckets A and B can belong to different users.
正解: C
質問 31
RDS accounts can be used to connect with the databases created on a given RDS instance. Each account can be bound with multiple databases. Yet, the read/write permissions of each database can only be assigned to one RDS account
- A. True
- B. False
正解: A
質問 32
As a concept stem from cloud computing, cloud storage service provides on-demand storage and data services to users through a unified interface Which of the following characteristics about cloud storage are correct? (Number of correct answers: 4)
- A. Service on demand Cloud storage has a huge resources pool, users can apply for and use the resources on demand.
- B. High reliability and availability: Provides very high reliability and availability through technologies like 3 redundant copies, automatic failure recovery, etc.
- C. High scalability Storage capacity can be dynamically scaled to meet the needs.
- D. Ultra-large scale: Data storage can reach TB or even PB level
- E. Transparent service: Provides the service through a single SDK
- F. Management and maintenance: To prevent emergent service termination, users need to know the underlying detail like how the data is archived in the resource pool.
正解: A,B,C,E
質問 33
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 all of the above functions.
- C. Supports database schema replication between instances.
- D. Supports migrating MySQL databases from external sources.
正解: C
質問 34
When using Alibaba Cloud SLB to forward layer 7 (HTTP) service requests. SLB will replace the IP address in the HTTP header file to forward requests.
Therefore the source IP address that can be seen on the backend ECS instance is the IP address of SLB instead of the clients real IP address.
- A. True
- B. False
正解: A
質問 35
When you create an Alibaba Cloud VPC. a VRouter and a route table will be created automatically. Which of the following statements is NOT correct about the route table?
- A. The routing entries of the route table can not be modified manually.
- B. When a VPC is deleted, the corresponding route table is also deleted.
- C. This route table cannot be deleted
- D. Each VRouter may have multiple route tables.
正解: B
質問 36
Alibaba Cloud ECS provides multiple instance types to meet the needs of different business scenarios. A medium-sized enterprise user wants to use two ECS instances, one to deploy a single Tomcat service and the other one to deploy Memcache. Which of the following configurations is most recommended?
- A. Tomcat: 4 cores: 4G, Memcache: 2 cores: 16G
- B. Tomcat: 4 cores 8G. Memcache: 2 cores 8G
- C. Tomcat: 4 cores. 8G, Memcache: 2 cores: 16G
- D. Tomcat: 4 cores, 4G, Memcache: 2 cores, 8G
正解: D
質問 37
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
正解: A
質問 38
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 can be in different regions and zones.
- B. 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.
- 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.
正解: C
質問 39
Object Storage Service (OSS) supports sub accounts, and you can allocate access permissions to different buckets for each sub account.
- A. True
- B. False
正解: B
質問 40
Before data communication is setup, the security groups match the security group rules one by one to query whether to allow access requests Assume that the user has created two security group rules 1 and 2 The protocol type, port range, authorization type, and authorization object of the two security group rules are the same. The difference is that Rule 1 is a denial policy, rule 2 is an allowed policy, so the following statement is correct_______ (Number of correct answers 2)
- A. If rule 1 and rule 2 have different priorities, the rule with a large priority number takes effect.
- B. If rule 1 and rule 2 have the same priority, the rule of the denial policy takes effect first, and the rule of the allowed policy does not take effect
- C. If rule 1 and rule 2 have different priorities, the rule with a small priority number takes effect
- D. If rule 1 and rule 2 have the same priority, the rule of the allowed policy takes effect first, and the rule that of the denial policy does not take effect.
正解: B,C
質問 41
Compared with traditional physical servers, upgrading an ECS instance is much easier. Which of the following statements about upgrading an ECS instance is false?
- A. You can change an instance's operating system without rebooting.
- B. Upgrading network bandwidth does not require the ECS instance to restart.
- C. Upgrading the configuration of the ECS instance requires no' redeployment or data migration.
- D. You can upgrade the CPU, memory, and bandwidth.
正解: B
質問 42
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