ACA-Developer Dumps To Pass Alibaba Cloud Exam in 24 Hours – TestKingIT [Q58-Q76]

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ACA-Developer Dumps To Pass Alibaba Cloud Exam in 24 Hours – TestKingIT

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NO.58 Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?

Alibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to certificates private key

The plaintext of Alibaba Cloud’s private key is usually stored on disk and backed up regularly

Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key

Alibaba Cloud Certificate Service keys are loaded Into memory in plaintext format ONLY when needed

NO.59 A developer is writing logs through the Log Service API, and can see via the Logstore monitorin metrics that write traffic is about 10 MB/s, but a 403 error is reported during the writing process. Which of these is a possible cause?

There is significant network delay

The write throughput of a single partition is limited, and the 10 MB/s write traffic exceeds

There is not enough space in the Logstore partition

The target partition in the Logstore is not specified

NO.60 Which of the following options describes the basic concepts of Alibaba Cloud Tracing Analysis correctly?
(Number of correct answers: 3)

Alibaba Cloud Tracing Analysis model relies on OpenTracing

In the OpenTracing standard, a call chain can be regarded as a directed acyclic graph (DAG) composed of multiple Spans. The relationship between spans is named References

In the OpenTracing standard, each Span represents a named and timed non-continuous execution segment in the call chain

In some cases, timing diagrams based on the timeline are used to show the call chain

NO.61 Which of the following is NOT a feature of Alibaba Cloud’s Cassandra database service?

Centerless distributed architecture

Supports both narrow and wide tables, providing flexible schema functions

Cluster storage, strong expansion of read and write capabilities

Enterprise-level capabilities such as disaster tolerance, backup and recovery, security, and monitoring across data centers

NO.62 During the process of backing up an RDS database, a developer found that the backup failed. What might cause this to happen?

The database instance is not stopped

DDL operations were performed during the backup

DML operations were performed during the backup

DCL operations were performed during the backup

NO.63 Alibaba Cloud’s ECS disk snapshotting tool can create crash-consistent snapshots for all types of Cloud Disks.
It is a convenient and efficient disaster recovery method. It is often used for data backup, custom mirroring, application disaster recovery, etc. Which of the following is NOT a correct description of disk snapshots?

A snapshot is a backup file of the cloud disk data state at a certain point in time. The first snapshot of the cloud disk is a full snapshot of the ac usage. Empty data blocks are not backed up. All subsequent snapshots are incremental snapshots, and only changed data blocks are stored.

Snapshots can be created manually through the web console or command line tools, or automatically according to a schedule.

In the event of a system failure, you can use a snapshot to roll back the Cloud Disk to an earlier point in time.

Snapshot rollbacks can be performed while the ECS instance is running.

NO.64 Which of the following statements describes AKs (Access Keys) incorrectly?

AK can refer to both the AccessKey ID and the AccessKey secret

You can use AK to construct an API request and the corresponding resources can be manipulated if your request successfully..

An AccessKey ID and AccessKey Secret cannot be used separately

AccessKey Secrets for RAM sub-accounts can be queried at any time on the Console Interface after creation

NO.65 A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux.
Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?

Use a third-party image creation tool to create an image from the physical server. Upload the image to the ECS console to turn it into a custom image. Then, use the custom image to create ECS instances.

Use SMC(Server Migration Center) to collect data from the origin physical server. Create an intermediate ECS instance on Alibaba Cloud and wait for the data transfer to complete. Then generate a new image directly from that intermediate ECS instance.

Use a third-party image creation tool to create an image from the physical server. The image is then uploaded to Alibaba Cloud Object Storage Service (OSS) for storage. In the ECS console, import that image from OSS, then, create an ECS instance from the custom image.

NO.66 Which of the following are correct, regarding RAM users? (Number of correct answers: 3)

RAM users can be created under a single Alibaba Cloud account, corresponding to employees, systems, or applications.

RAM users do not “own” the resources that they create (those belong to the Alibaba Cloud account itself), and RAM users cannot generate and pay their own individual bills (costs accrue to and are billed to the master Alibaba Cloud account).

RAM users belong to an Alibaba Cloud account, but they can also operate as independent accounts with their own private resources, not visible to the primary Alibaba Cloud account.

RAM users must be authorized by the Alibaba Cloud account to log in to the console or use the API to manage the resources owned by the Alibaba Cloud account.

NO.67 A developer have written a web application using a microservice architecture, in such a architecture, the client (web browser or mobile application) first initiates a request. The request first reaches the load balancer, then goes through an authentication service, a billing service, then requests a resource, and finally a result is returned. How many spans does such a call chain consist of?

NO.68 Log Service uses a semi-structured data model to define a log. This mode contains five data fields:
Topic, Time, Content, Source, and Tags. Log Service has different requirements for the format of each field in the log. Which of the following fields cannot be empty characters? (Number of correct answers: 4)

Topic

Time

Content

Source

Tags

NO.69 If a user finds that the Content Delivery Network (CDN) cache hit rate is low, what could be the reason?
(Number of correct answers: 3)

When the website has low traffic, the CDN will receive fewer requests and this will result in a lower cache hit rate.

Insufficient bandwidth was selected when enabling the CDN service, causing the service capacity reach its limit too early.

HTTP Header settings may cause cache misses.

The origin site has a large number of dynamic resources.

Cache configuration is inappropriate (ex. overly short Cache Expiry Time for popular files).

NO.70 A company has some new content that needs to be promoted (such as new features, new activities, new games, or new articles). In order to achieve the overall promotion goal, the operating staff will select various channels for promotion (including standard HTML/HTML5 (desktop), iOS, and Android). You are using Alibaba Cloud’s Log Service: in order to ascertain the effectiveness of content promotion accurately and in real time, which log collection method should you use, as a developer?

Syslog

Web Tracking

Kafka

Logslash

NO.71 Alibaba Cloud RabbitMQ is typically used in scenarios where message publishing and consumption performance requirements are high. Which of the following are supported message types in Alibaba Cloud Rabbit MQ? (Number of correct answers: 3)

Scheduled message

Ordered message

Batched message

Transactional message

Retried message

NO.72 When connecting to the Alibaba Cloud RDS database, in order to improve the completeness and integrity of the connection, you can enable SSL encryption and install an SSL CA certificate for the required application service. Which of the following statements are correct? (Number of correct answers: 3)

Due to the way in which SSL encryption is implemented, enabling SSL encryption will significantly increase the CPU usage rate. Enable SSL encryption when there is an encryption requirement for the external network link. The intranet link is relatively safe, and generally no link encryption is required.

If the RDS instance is a multi-node instance, the system will trigger the active/standby switch after the SSL service is disabled.

When using read/write splitting, you can also enable SSL encryption to improve the security of the connection.

It is discovered that an Alibaba Cloud RDS SSL certificate is about to expire, and the validity period needs to be updated, requiring that the certificate be updated, then reinstalled. This will restart the RDS instance.

NO.73 Elastic Container instance (ECI) is an agile, secure, serverless service for running containers. If you need to configure public network access for ECI, which of these are reasonable solutions? (Number of correct answers: 3)

Specify a public IP address when creating the ECI.

Bind a NAT gateway and an EIP to the VPC to which the ECI belongs.

Configure ECI as a backend for a Server Load Balancer (SLB) that has a public IP address.

Bind an Elastic IP (EIP) to the ECI instance.

NO.74 Which of the following options is not included in Object Storage Service (OSS) object URLs?

Region name

Zone name

Bucket name

Filename

NO.75 In order to have your applications interact with Alibaba Cloud RabbitMQ, you need to create related MQ resources first. Which of the following resources must be created? (Number of correct answers: 3)

Vhost

Exchange

Queue

Broker

Topic

NO.76 Which of the following cloud services can be integrated with Alibaba Cloud KMS (Key Managed Service)?
(Number of correct answers: 3)

Elastic Compute Service (ECS)

Object Storage Service (OSS)

Relational Database Service (RDS)

Server Load Balancer (SLB)

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ACA-Developer Dumps To Pass Alibaba Cloud Exam in 24 Hours – TestKingIT [Q58-Q76]

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