Free Apr-2024 UPDATED Alibaba Cloud ACP-Cloud1 Certification Exam Dumps is Online
Alibaba Cloud Exam 2024 ACP-Cloud1 Dumps Updated Questions
Alibaba Cloud ACP-Cloud1 certification is designed to validate the skills and knowledge of individuals in the field of cloud computing. The ACP-Cloud1 exam is an internationally recognized certification that demonstrates a professional's ability to design, deploy, and manage cloud-based solutions using Alibaba Cloud products and services. ACP Cloud Computing Professional certification is ideal for cloud computing professionals who are looking to enhance their skills and expertise in this field.
Alibaba Cloud ACP-Cloud1 exam is a comprehensive exam that tests an individual's knowledge and skills in cloud computing. It is a valuable certification that is highly valued by employers in the IT industry. With the resources provided by Alibaba Cloud, candidates can prepare for the exam and demonstrate their expertise in cloud computing.
NEW QUESTION # 40
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. Anti-DDoS Origin Basic Edition
- C. Cloud Firewall
- D. Security Center
Answer: C
NEW QUESTION # 41
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 small 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 large 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.
Answer: A,B
NEW QUESTION # 42
When a customer uses Alibaba Cloud Object Storage Service (OSS) service and finds there exist an amount of Internet downstream traffic, he/she can use Alibaba Cloud Content Delivery Network (CDN) service to reduce the traffic cost.
Because the Internet traffic cost of CDN is lower than that of OSS, moreover, the back-to-source traffic cost from CDN to OSS is also lower than a user access to OSS directly.
- A. False
- B. True
Answer: B
NEW QUESTION # 43
Which of the following statements is most accurate about the Data Transmission Service (DTS) database migration function?
- A. Supports migrating MySQL databases from external sources.
- B. Supports database schema replication between instances.
- C. Supports all of the above functions.
- D. Supports warning when source and destination has some unresolved conflict found.
Answer: B
NEW QUESTION # 44
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. A DDoS attacks crack the server's logon password by means of a massive number of attempts.
- B. 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. - C. DDoS attacks primarily target databases.
- D. The purpose of a DDoS attack is to steal confidential information.
Answer: B
Explanation:
Explanation
A DDoS attack is a type of cyberattack that aims to exhaust the resources of a target server or network, such as bandwidth, CPU, memory, or disk space, by sending a large amount of malicious traffic or requests. This can cause the server or network to slow down, crash, or become unavailable to legitimate users. A DDoS attack is not intended to steal confidential information, crack passwords, or target databases, although these may be secondary objectives or consequences of some attacks. A DDoS attack is one of the most common and powerful threats to website security, as it can be launched from multiple sources, use various attack methods, and evade traditional defense mechanisms. According to the DDoS Attack Statistics and Trend Report by Alibaba Cloud, the proportion of volumetric attacks at 50Gbps and above has doubled, and the resources exhaustion attack reached a peak value of 3 million QPS in 2020-2021. References: DDoS Attacks: Sources, Strategies and Practices - Alibaba Cloud, DDoS Attack Statistics and Trend Report by Alibaba Cloud, Use Alibaba Cloud Anti-DDoS Service to Defend DoS Attack, Anti-DDoS Basic - Alibaba Cloud
NEW QUESTION # 45
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. The instance and the scaling group must be in the same region but not necessarily the same zone.
- C. The instance and the scaling group must be in the same region and zone.
- D. 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.
Answer: B
NEW QUESTION # 46
Names of the files in each OSS bucket must be unique Also, they can be renamed.
- A. True
- B. False
Answer: B
Explanation:
Explanation
Objects cannot be directly renamed in OSS. To rename an object in the bucket, you can copy the source object to the destination object and delete the source object. This is because the object name is part of the object URL and cannot be changed without affecting the access to the object. However, if you enable the hierarchical namespace feature for a bucket, you can rename objects in the bucket by using the OSS console or SDKs.
References:
Object Storage Service:Rename objects - Alibaba Cloud
Object Storage Service:Rename objects - Alibaba Cloud
Recipe OSS: How to rename an object? (Alibaba Cloud)
NEW QUESTION # 47
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. OpenAPI batch deletion
- B. Online batch deletion
- C. Fragment management
- D. Bucket clearing
Answer: B
NEW QUESTION # 48
Many of Alibaba Cloud services provide highly reliable data storage capacity. For example, Object Storage Service (OSS) promises that its data reliability is no less than 99 99999999%. This high data reliability is solely achieved by RAID 0+1 redundancy technology.
- A. False
- B. True
Answer: B
NEW QUESTION # 49
Alibaba Cloud Content Delivery Network (CDN) performs content acceleration with the support of intelligent DNS resolution The following function_________is NOT included in intelligent DNS resolution.
- A. The intelligent DNS resolution supports web page content caching. A user will receive data from the origin site at first-time access, and then will be reading data from cache in subsequent requests
- B. The intelligent DNS resolution can parse the same domain name into different IP addresses based on the IP of different visitors.
- C. A user request is directed to the server nearest to the customer based on location information of the pre-configured IP section.
- D. If a user activates mirror sites in different IDCs, intelligent DNS resolution can achieve load balancing by guiding customers in different places to different mirror sites.
Answer: A
Explanation:
Explanation
Intelligent DNS resolution is a feature of Alibaba Cloud DNS that allows users to configure different IP addresses for the same domain name based on the geographic locations or ISPs of the visitors. This way, visitors can access the nearest or optimal server for better performance and availability. Intelligent DNS resolution does not support web page content caching, which is a function of Alibaba Cloud CDN. Alibaba Cloud CDN is a distributed network that delivers content from the origin server to the edge nodes closest to the end users, reducing the network latency and bandwidth consumption. Alibaba Cloud CDN caches the static content of the web pages, such as images, CSS, and JavaScript files, on the edge nodes, so that the users can access them faster and reduce the load on the origin server. A user will receive data from the cache in the first-time access, and then will be updated from the origin site in subsequent requests based on the cache expiration time.
References:
1: Intelligent DNS resolution - Alibaba Cloud DNS - Alibaba Cloud Documentation Center
4: Alibaba Cloud Content Delivery Network (CDN) performs content acceleration with the support of intelligent DNS resolution The following function_________is NOT included in intelligent DNS resolution.
5: Alibaba Cloud DNS:Alibaba Cloud line for intelligent DNS resolution (September 16, 2020) - Alibaba Cloud Documentation Center
NEW QUESTION # 50
A popular worldwide forum stores static resources in OSS and accelerates access using CON Users find that the speed of downloading files from the forum has been greatly improved, but uploading files is slow due to the long data transmission distance, resulting in a bad access experience In order to improve the speed of uploading files for users in this forum, so that users in different regions can have a good access experience, we recommend that the forum can________.
- A. Enable the transmission acceleration service for O: Enable OSS
- B. Enable OSS static website hosting
- C. Activate OSS in different regions as file storage, and synchronize data between OSS in different regions through cross-region replication
- D. Activate the PCDN service
Answer: A
Explanation:
Explanation
The transmission acceleration service for OSS is a feature that allows you to access OSS buckets through a global acceleration endpoint, which can improve the upload and download speed of OSS data across regions.
The global acceleration endpoint is a domain name that is resolved to the nearest OSS access point based on the network conditions of the client. This way, the data transmission distance is shortened and the network latency is reduced. Therefore, option C is the correct answer. References: Enable transfer acceleration, Map an acceleration endpoint
NEW QUESTION # 51
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. False
- B. True
Answer: B
NEW QUESTION # 52
Alibaba Cloud SLB can distribute user requests to backend ECS instances. These ECS instances must have the same specification (CPU, Memory)
- A. False
- B. True
Answer: B
NEW QUESTION # 53
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
Answer: B
Explanation:
Explanation
Different Alibaba Cloud VPCs are completely isolated from each other by default, but they can communicate with each other over the intranet by using different methods, such as Cloud Enterprise Network (CEN), VPN gateways, VPC peering connections, and PrivateLink. These methods allow you to establish secure and reliable connections between VPCs without exposing your network traffic to the internet. References:
Overview of VPC connections - Alibaba Cloud
Cross-VPC peering - Alibaba Cloud
ALIYUN::VPC::VpcPeerConnection - Alibaba Cloud
NEW QUESTION # 54
When creating an ECS instance in your Alibaba Cloud VPC, you must specify a VSwitch for that instance at the same time. Otherwise, you will not be able to create this ECS instance.
- A. False
- B. True
Answer: B
NEW QUESTION # 55
If you want to build a secure and isolated network environment on Alibaba Cloud; meanwhile, design your network topology and specify Intranet IP addresses or CIDR Blocks in this network environment as needed, you can choose
- A. Auto Scaling
- B. Virtual Private Cloud (VPC)
- C. Leased line
- D. Express Connect
Answer: B
Explanation:
Explanation
According to the Alibaba Cloud VPC documentation1, a virtual private cloud (VPC) is a virtual network dedicated to your Alibaba Cloud account. You have full control over your VPC, such as specifying the CIDR block, configuring route tables and gateways, and creating subnets. A VPC is an isolated network environment that provides security and flexibility for your cloud computing resources. You can use a VPC to build a secure and isolated network environment on Alibaba Cloud, design your network topology, and specify intranet IP addresses or CIDR blocks in this network environment as needed. Therefore, option B is the correct choice for your scenario. References: What is a VPC? and Alibaba Cloud Virtual Private Cloud.
NEW QUESTION # 56
Auto Scaling can automatically adjust the number of ECS instances based on user-defined scaling rules to meet service needs. If a user cannot predict service changes or does not have enough history data, he/she can still use dynamic scaling mode to automatically add/remove ECS instances based on certain CloudMonitor performance metrics (such as the CPU utilization rate)
- A. False
- B. True
Answer: B
NEW QUESTION # 57
Once ECS is created, you can't change its private IP address anymore.
- A. True
- B. False
Answer: B
Explanation:
Explanation
You can change the private IP address of an ECS instance after it is created, but you need to stop the instance first. The private IP address must be within the CIDR block of the VPC and the VSwitch that the instance belongs to. You can modify the private IP address of an instance by using the console or the API.
References: 3, ACP Cloud Computing Certification - Alibaba Cloud Academy After stopping an Alibaba Cloud Elastic Compute Service (ECS) instance, you will still be charged for some resources related to that ECS instance, such as disks, snapshots, and public IP addresses, until you release them. The charging policy depends on the billing method and network type of the ECS instance. For pay-as-you-go instances, you can choose whether to enable the No fees for stopped instances feature, which allows you to stop paying for vCPUs and memory when the instance is stopped. However, this feature is only available for VPC-connected instances in some regions1. For subscription instances, you will be charged for the entire subscription period regardless of whether the instance is running or stopped2. References:
1: Billing FAQ - Elastic Compute Service - Alibaba Cloud Documentation Center1
2: Billing overview - Elastic Compute Service - Alibaba Cloud Documentation Center2
NEW QUESTION # 58
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 can belong to different users.
- B. Buckets A and B can be separate buckets (or a single bucket) but they must belong to the same user
- C. Buckets A and B must be the same bucket.
- D. Buckets A and B must be different buckets.
Answer: B
NEW QUESTION # 59
The Alibaba Cloud CDN can directly accelerate access to the files stored in OSS and reduce OSS traffic costs.
- A. False
- B. True
Answer: B
Explanation:
Explanation
The Alibaba Cloud CDN can directly accelerate access to the files stored in OSS and reduce OSS traffic costs.
Alibaba Cloud CDN is a global network of points of presence (POPs) that are distributed across the globe.
Alibaba Cloud CDN serves to reduce back-to-origin traffic. This in turn prevents network congestion and ensures that content is delivered with minimal latency across regions in various use cases1. Alibaba Cloud CDN caches resources from your origin servers on POPs located across the globe. Whenever customers access your resources, the resources are served from the nearest POP instead of the origin server. This helps prevent lengthy back-to-origin requests and reduces loads on origin servers, delivering better experience to your customers and reducing back-to-origin costs1. Alibaba Cloud CDN also provides IPv6 support on some POPs1. You can use Alibaba Cloud CDN to accelerate access to Object Storage Service (OSS). If you directly access OSS resources, the access speed varies based on the region in which the buckets are located and is limited by the outbound bandwidth of OSS2. The Internet traffic cost of CDN is lower than that of OSS, and the back-to-source traffic cost from CDN to OSS is also lower than a user access to OSS directly2. Therefore, using CDN can reduce the traffic cost of OSS. References: Use Alibaba Cloud CDN to accelerate access to OSS, What is Alibaba Cloud CDN?
NEW QUESTION # 60
You need to create a new ECS instance for a 10-data test. Which of the following billing methods is most cost-effective?
- A. Pay-As-You-Go
- B. Preemptible
- C. Pay-AS-You-Go with Savings Plan
- D. Subscription
Answer: C
Explanation:
Explanation
According to the Alibaba Cloud ECS documentation1, the Pay-As-You-Go billing method is flexible and suitable for short-term or uncertain workloads. However, it is also the most expensive option compared to other billing methods. To reduce the cost of Pay-As-You-Go instances, you can purchase a Savings Plan, which is a discount plan that offers lower prices for a fixed amount of hourly usage. A Savings Plan can be applied to any Pay-As-You-Go instance in the same region, regardless of the instance type, operating system, or zone. Therefore, option A is the most cost-effective billing method for a 10-day test, as it allows you to enjoy the flexibility of Pay-As-You-Go and the savings of a fixed commitment. References: Billing methods and Savings Plan.
NEW QUESTION # 61
A customer uses Alibaba Cloud Auto Scaling service and creates a scaling group He/she sets the "Minimum number of instances" to 2 and "Maximum number of instances" to 7.
After correctly configuring scaling settings, the customer adds a scaling rule "Add 6 ECS instances", and creates a scheduled task based on this rule.
And then, the customer checks the scaling group and see it already contains 3 valid ECS instances, he/she then enables this scaling group immediately.
How many ECS instance will be added in the scaling group when the scheduled task is activated once'?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 62
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 small 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 large 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.
Answer: A,B
Explanation:
Explanation
Before data communication is set up, the security groups match the security group rules one by one to query whether to allow access requests. If the protocol type, port range, authorization type, and authorization object of two security group rules are the same, the following rules apply:
If the two rules have the same priority, the rule of the denial policy takes effect first, and the rule of the allowed policy does not take effect. This is because the security group rules follow the principle of minimum permission, which means that the most restrictive rule is applied when there is a conflict.
If the two rules have different priorities, the rule with a smaller priority number takes effect. This is because the security group rules follow the principle of priority, which means that the rule with a higher priority (lower number) is applied when there is a conflict. References: ECS Security Groups - Alibaba Fundamentals - Cloud Academy, Security group rules - Elastic Compute Service - Alibaba Cloud Documentation Center
NEW QUESTION # 63
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. False
- B. True
Answer: B
NEW QUESTION # 64
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. False
- B. True
Answer: B
NEW QUESTION # 65
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