Alibaba ACP-Cloud1 Exam Practice Test Instant Access

Question 1

When distributing loads to multiple ECS instances with an Alibaba Cloud Server Load Balancer (SLB), you can obtain the real IP addresses of users who initiate the requests through _____________. (Choose two.)

AFor Layer-7 services, SLB obtains the real IP addresses of the visitors by means of HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first.

BFor Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

CFor Layer-4 services, SLB obtains the real IP addresses of the visitors by means of the HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first.

DFor Layer-7 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

Answer : A, B

In Alibaba Cloud SLB, Layer-7 (HTTP/HTTPS) services require enabling the 'X-Forwarded-For' header to retrieve the real IP address of clients, while Layer-4 (TCP/UDP) services can obtain the real IP address directly without additional settings.

Question 2

Alibaba Cloud CloudMonitor allows you to customize monitoring metrics and alert policies. Which of the following statements about customized monitoring are correct? (Choose two.)

AUsers can monitor concerned services and report collected monitoring data to CloudMonitor so that CloudMonitor processes the data and generates alerts according to the result.

BUsers can only select limited and fixed templates, and monitor specified server performance indicators.

CThe number of customized monitoring metrics is limited, and programs used to report metric data must be deployed on the Alibaba Cloud server.

DThe number of customized monitoring metrics is not limited, and programs used to report metric data may be deployed on devices other than the Alibaba Cloud server.

Answer : A, D

CloudMonitor allows users to create custom monitoring metrics and report data, which can then be analyzed and used for alerts. Customized monitoring is flexible, with no set limits on the number of metrics, and users can report data from Alibaba Cloud servers or other devices.

Question 3

Cloud computing adopts a common model in Distributed Systems. It distributes a computing task to a resource pool (comprised of a large number of computers). Elastic utilization of the resource pool allows applications to obtain computing capacity, storage space, and message services according to needs. Which of the following statements are correct about cloud computing? (Choose four.)

ALarge scale

BHigh availability

CService on demand

DVersatility

EContainer-based

FOnly supports single tenant

Answer : A, B, C, D

Cloud computing is characterized by large-scale infrastructure, high availability, on-demand service provisioning, and versatility in handling diverse applications and workloads. It supports both multi-tenant and single-tenant configurations, and although containerization is popular, cloud computing is not limited to container-based architectures.

Question 4

Alibaba Cloud OSS is a cloud storage service that features massive capacity, outstanding security, low costs, and high reliability. When talking about information security, the advantages of using OSS are ____________. (Choose two.)

ASupports Anti-DDoS, automatic traffic cleaning, and 'black holing' without any extra charges.

BOffers a multi-user isolation mechanism directly, with no need to leverage RAM.

COffers Server Side Encryption for data security protection in OSS.

DProvides Primary/Secondary region configuration for data reliability protection.

Answer : C, D

Alibaba Cloud OSS offers Server Side Encryption to protect data at rest, enhancing security. It also supports multi-region replication with Primary/Secondary region configurations for additional data reliability and disaster recovery. Anti-DDoS is not an inherent feature of OSS, and multi-user isolation is achieved via Alibaba Cloud's Resource Access Management (RAM).

Question 5

Which of the following Alibaba Cloud products can provide Anti-DDoS service? (Choose two.)

ASecurity Center

BAnti-DDoS Origin Service

CAnti-DDoS Pro Service

DCloud Firewall

Answer : B, C

Alibaba Cloud provides two main products for Anti-DDoS protection: Anti-DDoS Origin Service, which protects against attacks at the origin server level, and Anti-DDoS Pro Service, which offers advanced DDoS mitigation for applications hosted on Alibaba Cloud. Security Center and Cloud Firewall offer different security functionalities but do not provide direct Anti-DDoS services.

Question 6

Which of the following is not a potential cause of latency on an RDS read-only instance?

AThe load on this read-only instance is significant.

BThere exists significant load on the ECS that is connected to this read-only instance.

CThe specification of this read-only instance is too low.

DThis read-only instance's master instance is performing a lot of write operations.

Answer : B

Latency on an RDS read-only instance can be caused by high loads on the instance itself, inadequate instance specifications, or excessive write operations on the master instance, as these factors directly impact replication delay and resource contention. However, a high load on the ECS instance connected to the RDS read-only instance would not inherently cause latency on the RDS instance, as the ECS and RDS operate independently in terms of processing.

Question 7

Which of the following statements about an OSS bucket is NOT correct?

AEvery user can create more than one bucket.

BThe bucket name can be changed after creation.

CEvery bucket must have a unique name.

DThere is no limitation on the number of objects inside a bucket.

Answer : B

In Alibaba Cloud Object Storage Service (OSS), once a bucket is created, its name cannot be changed. This rule aligns with OSS's design to ensure global uniqueness and consistency in bucket naming across regions. Users can create multiple buckets, and each bucket can store an unlimited number of objects, provided the bucket name remains unique and immutable after creation.

Alibaba ACP-Cloud1 ACP Cloud Computing Certification Exam Practice Test