2024 Valid ACP-Cloud1 test answers & Alibaba Cloud Exam PDF
Free Alibaba Cloud ACP-Cloud1 Exam Questions and Answer from Training Expert DumpsActual
The ACP-Cloud1 exam is designed for professionals who want to validate their skills and knowledge in cloud computing. ACP-Cloud1 exam focuses on various topics related to cloud computing, including cloud computing concepts, cloud infrastructure, cloud security, and cloud deployment and management. ACP-Cloud1 exam is designed to test the candidate's ability to design, deploy, and manage cloud-based solutions using Alibaba Cloud.
Alibaba Cloud ACP-Cloud1: ACP Cloud Computing Professional exam is a certification program designed to validate an individual's skills and knowledge in cloud computing. ACP-Cloud1 exam is intended for IT professionals who want to demonstrate their expertise in cloud computing and gain recognition in the industry.
NEW QUESTION # 39
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 # 40
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. Etag
- B. Authorization
- C. X-Forwarded-For
- D. Connection
Answer: C
Explanation:
Explanation
The X-Forwarded-For field in HTTP header is used to identify the originating IP address of a client connecting to a web server through an HTTP proxy or a load balancer. When the "Obtain the Visitor's Real IP Address" function is enabled in Alibaba Cloud SLB, the SLB instance adds the X-Forwarded-For field to the HTTP header of each request and forwards the request to the backend server. The backend server can then obtain the real IP address of the visitor from the X-Forwarded-For field1. The format of the X-Forwarded-For field is as follows:
X-Forwarded-For: client, proxy1, proxy2
where the value is a comma+space separated list of IP addresses, the left-most being the original client, and each successive proxy that passed the request adding the IP address where it received the request from. In this example, the request passed through proxy1, proxy2, and then the SLB instance (proxy3).2 References: Obtain client IP addresses - Server Load Balancer - Alibaba Cloud, X-Forwarded-For - MDN Web Docs
NEW QUESTION # 41
A Virtual Private Cloud (VPC) is an isolated network environment that is completely isolated from each other The following statements about VPC are correct_________. (Number of correct answers: 2)
- A. Subnets can be divided like the traditional network environment. Different cloud servers within each subnet are connected by the same router and different subnets are interconnected by switches.
- B. ECS instances in a VPC use security group firewalls for Layer 2 network access control.
- C. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.
- D. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside.
Answer: C,D
Explanation:
Explanation
According to the Alibaba Cloud Academy, a VPC is an isolated network environment that is completely isolated from each other. Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network. This means that different VPCs cannot communicate with each other through the tunnel ID. Subnets are not divided like the traditional network environment, but rather are logical divisions of the VPC. Different cloud servers within each subnet are connected by the same router, but different subnets are interconnected by route tables, not switches. ECS instances in a VPC use security group firewalls for Layer 4 network access control, not Layer 2. The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside, such as NAT Gateway or EIP. References: ACP Cloud Computing Certification Preparation Course - Internetworking with VPC, Alibaba Cloud VPC User Guide
NEW QUESTION # 42
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: B
Explanation:
Explanation
When the scheduled task is activated once, 4 ECS instances will be added in the scaling group. This is because the scaling rule "Add 6 ECS instances" will increase the number of instances in the scaling group to 9, which exceeds the maximum number of instances (7) that is set for the scaling group. Therefore, Auto Scaling will only add 4 ECS instances to reach the maximum number of instances. The remaining 2 ECS instances will not be added to avoid exceeding the quota.
NEW QUESTION # 43
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. Cloud Firewall
- B. CloudMonitor
- C. Anti-DDoS Origin Basic Edition
- D. Security Center
Answer: A
Explanation:
Explanation
Cloud Firewall is a service that provides centralized protection for your cloud assets and prevents unauthorized access to your servers. Cloud Firewall can monitor and control the inbound and outbound traffic of your servers, and block malicious requests and attacks. Cloud Firewall can also detect and prevent brute force password cracking attempts by using intelligent algorithms and threat intelligence. Therefore, option A is the correct answer. References: What is Cloud Firewall?, Protect servers from brute force attacks
NEW QUESTION # 44
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 and zone.
- C. The instance and the scaling group must be in the same region but not necessarily the same 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: C
NEW QUESTION # 45
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 upgrade the CPU, memory, and bandwidth.
- B. Upgrading the configuration of the ECS instance requires no' redeployment or data migration.
- C. You can change an instance's operating system without rebooting.
- D. Upgrading network bandwidth does not require the ECS instance to restart.
Answer: C
Explanation:
Explanation
Changing an instance's operating system requires creating a custom image or using a public image, and then replacing the system disk of the instance. This process will cause the instance to restart. Therefore, this statement is false. References: ECS User Guide: Replace the system disk (non-public image) and ECS User Guide: Replace the system disk (public image)
NEW QUESTION # 46
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 # 47
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. We do not know the weight settings of the remaining 4 ECS instances, so we cannot tell what would happen
- C. Based on SLB's working mechanism, approximately 20% of loads will be assigned to ecs_inst1
- D. 100% of loads will be assigned to ecs__inst1, and the remaining 4 ECS instances will stay idle
Answer: B
Explanation:
Explanation
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. However, the load distribution is not based on the absolute value of the weight, but on the proportion of the weight in the total weight of all healthy backend ECS instances. For example, if there are two healthy backend ECS instances with weights of 100 and
200 respectively, the first instance will receive 33.3% of the load, and the second instance will receive 66.7% of the load. Therefore, to determine the load distribution of the 5 ECS instances in the question, we need to know the weight settings of the remaining 4 ECS instances. Without this information, we cannot tell what would happen. The other options are incorrect because they are based on wrong assumptions or misunderstandings of the SLB weight setting mechanism.
NEW QUESTION # 48
You are using Auto Scaling with one scaling group already created, then you want to execute a task at a specific time such as removing 1 ECS instance every night at 00:00. To achieve this, which of the following operations should be performed'? (Number of correct answers; 2)
- A. Create a new scaling group.
- B. Create a scaling rule
- C. Create a scheduled task.
- D. Create an event-triggered task.
Answer: A,B
NEW QUESTION # 49
Which of the following scenarios can be done using Alibaba Cloud Express Connection? (Number of correct answers: 2)
- A. Intranet communication between VPCs and Smart Access Gateway in customers different branch offices
- B. Intranet communication between a VPC and servers in an external IDC
- C. Intranet communication between two VPCs under the same account in the same region
- D. Intranet communication between two VPCs in different accounts and different CIDR Blocks
Answer: A,B
Explanation:
Explanation
Alibaba Cloud Express Connect is a service that enables high-bandwidth, reliable, secure, and private connections between different networks, such as VPC networks across regions, Alibaba Cloud accounts, and on-premise data centers1. It supports different connection methods, such as physical connections, virtual border routers, and Express Cloud Connect1.
Scenario A: Intranet communication between VPCs and Smart Access Gateway in customers different branch offices. This scenario can be achieved by using Express Cloud Connect, which is based on the hardware capacities of Smart Access Gateway and provides SD-WAN capabilities1. Express Cloud Connect allows you to connect your branch offices to Alibaba Cloud through a dedicated partner backbone network, and access VPC networks in all regions1.
Scenario B: Intranet communication between a VPC and servers in an external IDC. This scenario can be achieved by using physical connections, which are dedicated network connections between on-premise data centers and VPC networks1. You can lease a line from your ISP or work with an Alibaba Cloud partner to establish a physical connection to Alibaba Cloud1. This way, you can access VPC networks in all regions with high bandwidth and low latency1.
Scenario C: Intranet communication between two VPCs in different accounts and different CIDR Blocks. This scenario can be achieved by using peering connections, which are logical connections that enable communication between VPC networks2. Peering connections support cross-region and cross-account scenarios, and allow you to connect VPC networks with different CIDR blocks2. However, peering connections are not part of Alibaba Cloud Express Connect, but a separate service called Cloud Enterprise Network2.
Scenario D: Intranet communication between two VPCs under the same account in the same region. This scenario can also be achieved by using peering connections, which are logical connections that enable communication between VPC networks2. Peering connections support intra-region and same-account scenarios, and allow you to connect VPC networks with different CIDR blocks2. However, peering connections are not part of Alibaba Cloud Express Connect, but a separate service called Cloud Enterprise Network2. References: 1: Express Connect - Alibaba Cloud 2: Introduction to Cloud Enterprise Network - Alibaba Cloud Document Center
NEW QUESTION # 50
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 warning when source and destination has some unresolved conflict found.
- D. Supports all of the above functions.
Answer: B
NEW QUESTION # 51
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. False
- B. True
Answer: B
NEW QUESTION # 52
The backend server pool of an Alibaba Cloud SLB contains multiple ECS instances, which may have different service capacities. To exploit the different service capacities of backend ECS instances, which of the following statements is correct?
- A. SLB cannot assign more requests to certain ECS instances.
- B. Choose Weighted Least-Connection mode, and ECS instances with higher capacities will surely be assigned with more requests.
- C. Choose Round-Robin model and ECS instances with higher capacities will surely be assigned with more requests.
- D. Choose Weighted Round Robin mode to set higher weights to ECS instances with higher capacities The higher the weight of the backend ECS instance the higher chance that the instance will receive requests.
Answer: D
Explanation:
Explanation
Weighted Round Robin (WRR) is a load balancing mode that assigns requests to backend ECS instances based on their weights. The higher the weight of the backend ECS instance, the higher the chance that the instance will receive requests. This mode can exploit the different service capacities of backend ECS instances by setting higher weights to ECS instances with higher capacities. For example, if there are two ECS instances in the backend server pool, one with a weight of 10 and the other with a weight of 20, the ECS instance with a weight of 20 will receive twice as many requests as the ECS instance with a weight of 10.
References:
1: SLB overview - Server Load Balancer - Alibaba Cloud Documentation Center
4: Server Load Balancer - Alibaba Cloud
5: Alibaba Server Load Balancer (SLB) Course - Cloud Academy
NEW QUESTION # 53
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. Keys
- C. Objects
- D. Stubs
Answer: C
Explanation:
Explanation
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
The statement C is correct, because in an OSS bucket, all elements are stored as objects. An object is the basic unit of OSS storage. Each object consists of a unique key, data, and metadata. The key is the name of the object, which is used to identify the object in a bucket. The data is the content of the object, which can be any type of file, such as text, image, video, or audio. The metadata is the information about the object, such as its size, type, creation time, and custom attributes. References: = Object Storage Service:Overview - Alibaba Cloud
NEW QUESTION # 54
Alibaba Cloud Elastic Compute Service (ECS) instances in different Security Groups will definitely have no way to communicate with each other.
- A. False
- B. True
Answer: B
NEW QUESTION # 55
A new media company uses a mobile app to provide news and information services. They utilize Auto Scaling to add/reduce ECS instances dynamically to address service traffic spikes.
Based on the estimation of their service and technical personnel the company thinks they require 10 ECS instances during idle hours and 10 to 20 ECS instances (dynamically adjusted) during some busy hours, which are normally from 07:30 to 09:00 and from 18:30 to 20:00 In the scaling group; they set the "Minimum number of instances" to 10 and "Maximum number of instances" to 20.
To simplify deployment tasks and save costs, which of the following scaling modes should they choose?
- A. Healthy mode
- B. Fixed quantity mode
- C. Event-triggered mode
- D. Scheduled mode
Answer: D
Explanation:
Explanation
According to the Alibaba Cloud Auto Scaling documentation, scheduled mode allows you to configure the scheduled tasks by adding or removing ECS instances for a fixed time. This mode is suitable for scenarios where the service traffic spikes are predictable and periodic. For example, a new media company can use scheduled mode to add or reduce ECS instances dynamically to address service traffic spikes during some busy hours, such as from 07:30 to 09:00 and from 18:30 to 20:00. This mode can help simplify deployment tasks and save costs by avoiding unnecessary scaling activities. References: How Auto Scaling works - Auto Scaling - Alibaba Cloud Documentation Center.
NEW QUESTION # 56
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 the same bucket.
- 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 can belong to different users.
- D. Buckets A and B must be different buckets.
Answer: B
NEW QUESTION # 57
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 # 58
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