Practice Free CAP-C01 Exam Online Questions
An Alibaba Cloud RDS read-only instance has its data synchronized from the master instance.
Which of the following can be performed by the read-only instance from the RDS management console? (Single answer)
- A . Backup policy configuration and manual backup
- B . B. Database creation or deletion
- C . Editing its own whitelist
- D . Account authorization and account password changing
Elastic Compute Service (ECS) instances you created in different zones within the same region are not interconnected with each other through the Intranet by default.
- A . TRUE
- B . FALSE
A
Explanation:
By default, ECS instances in different zones within the same region are not interconnected via the Intranet. To enable communication between instances across zones, you would need to configure a VPC or use other network configurations. This setup provides isolation and flexibility in managing network traffic within different zones.
Reference: Alibaba Cloud ECS Network Configuration
A company uses Alibaba Cloud SLB with a layer 7 Listener and Auto Scaling at the same time, hoping this combination can help reduce O&M costs and provide a stable and reliable system.
However, because they do not have experience with Alibaba Cloud, the company’s engineers listed some precautions they think they should take, and have given you the list to ask for your advice.
As an Alibaba Cloud expert, you tell them that only ______is a valid concern. (Single answer)
- 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 the same operating system
- 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
Which of the following statements is true for RDS?
- A . Multiple databases can be created for one instance
- B . Databases with the same name are allowed in the same instance
- C . Resources are not shared among the databases in the same instance
- D . None of the above is true
A
Explanation:
In Alibaba Cloud RDS, multiple databases can be created within a single instance, allowing users to manage different databases under one RDS instance efficiently. However, databases within the same instance must have unique names, and resources such as CPU and memory are shared across databases within the same instance, contrary to the options provided in answers B and C.
Reference: Alibaba Cloud RDS Instance Management
To connect VPC with your traditional IDC. Alibaba Cloud currently supports the following methods: ________________ (Number of correct answers: 2)
- A . VPN Gateway
- B . HTTP agent
- C . Connection through a stopping stone
- D . Leased line connection
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 . Each VPC has an independent tunnel ID, and a tunnel ID corresponds to a virtualized network.
- B . 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.
- C . ECS instances in a VPC use security group firewalls for Layer 2 network access control.
- D . The internal networks of different VPCs are completely isolated and can be interconnected through IP addresses mapped to the outside.
AD
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.
Reference: ACP Cloud Computing Certification Preparation Course – Internetworking with VPC, Alibaba Cloud VPC User Guide
Availability Zones refer to data centers in the same region with independent power grids and networks.
Which of the following statements are true for Zones? (Number of correct answers:3)
- A . if the disaster recovery requirements of your applications are demanding it is recommended that you deploy ECS instances in the same Region and Zone.
- B . The network latency between inter-Zone ECS instances is lower.
- C . Intranet communication is available between different zones in the same region, and datacenter level fault isolation can be achieved between Zones.
- D . whether you place ECS instances in the same Zone depends on the requirements on disaster recovery and network latency.
- E . if your applications require a low network latency between ECS instances, it is recommended that you create ECS instances in different Zones.
An entrepreneur team builds a network disk application based on Alibaba Cloud Products. This application allows users to upload and download files online. Currently, all the files are stored on the data disks of ECS instances. As the service volume increases, the number of ECS instances and overall O&M costs soar. To reduce O&M costs, using the ______________ product in conjunction with ECS instances provides an ideal solution.
- A . SLB
- B . OSS
- C . CDN
- D . ApsaraDB for RDS
B
Explanation:
Alibaba Cloud OSS (Object Storage Service) is designed for storing large volumes of unstructured data, such as files, images, and videos, making it an optimal solution for network disk applications. By migrating storage from ECS data disks to OSS, the team can offload storage tasks, reduce the number of ECS instances required, and significantly lower O&M costs. OSS also provides high scalability, reliability, and cost-effectiveness for such use cases.
Reference: Alibaba Cloud OSS Documentation
Company G developed a shopping App. The system is constructed based on Alibaba Cloud products. They use Elastic Compute Service (ECS) instances and object Storage Service (OSS) in North China 1region, and store static web pages and images on OSS.
After the App went online, the access speed in mainland China is acceptable. Recently, the company decided to expand to the U.S. market and requires an acceptable access speed too for U.S. users. To address this requirement, company G should select Alibaba Cloud ___service. (Single answer)
- A . Enabling object Storage Service (OSS) in West US region with Content Delivery Network (CDN) in North China 2 regions
- B . Enabling Object Storage Service (OSS) in North China 1 region with Content Delivery Network(CDN)accelerating West Us(Silicon Valley) region
- C . Enabling Auto Scaling and more Elastic Compute Service(ECS) instances
- D . Enabling Auto Scaling and Content Delivery Network(CDN)
Names of the files in each OSS bucket must be unique Also, they can be renamed.
- A . True
- B . False
B
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.
Reference: Object Storage Service:Rename objects – Alibaba Cloud
Object Storage Service:Rename objects – Alibaba Cloud
Recipe OSS: How to rename an object? (Alibaba Cloud)