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NEW QUESTION: 1
배치 프로세서로 사용되는 EC2 인스턴스간에 메시지 큐를 설정하려면 Simple Queue Service (SQS)를 사용하는 배치 처리 솔루션의 아키텍처 다이어그램을 참조하십시오. Cloud Watch는 작업 요청 수 (큐 메시지)와 Auto Scaling 그룹을 모니터링합니다. Cloud Watch 경보에 설정된 매개 변수를 기반으로 배치 서버를 자동으로 추가하거나 삭제합니다.
이 아키텍처를 사용하여 다음 중 어떤 기능을 비용 효율적이고 효율적으로 구현할 수 있습니까?
A. 메시지가 SQS에 남아 있고 마모 될 수 있으므로 EC2 인스턴스 오류에 대한 내결함성을 구현하고 메시지를 S3에 백업하여 SQS 오류에 대한 내결함성을 구현합니다.
B. 메시지를 수신하는 사용중인 EC2 인스턴스가 데이지 체인 설정에서 다음 인스턴스로 메시지를 전달할 수 있도록함으로써 병렬 처리를 통해 작업을 실행하기 위한 전반적인 석회를 줄입니다.
C. 작업 요청 수가 많은 EC2 인스턴스 수를 자동으로 조정하여 비용 효율성을 향상시킵니다.
D. SQS를 통해 메시지를 교환하여 배치 내 EC2 인스턴스 간 메시지 전달을 구현합니다.
E. 우선 순위 메타 데이터 필드를 SQS 메시지에 지정하여 우선 순위가 낮은 작업보다 우선 순위가 높은 작업을 처리하십시오.
Answer: C
Explanation:
Explanation
There are cases where a large number of batch jobs may need processing, and where the jobs may need to be re-prioritized.
For example, one such case is one where there are differences between different levels of services for unpaid users versus subscriber users (such as the time until publication) in services enabling, for example, presentation files to be uploaded for publication from a web browser. When the user uploads a presentation file, the conversion processes, for example, for publication are performed as batch processes on the system side, and the file is published after the conversion. Is it then necessary to be able to assign the level of priority to the batch processes for each type of subscriber?
Explanation of the Cloud Solution/Pattern
A queue is used in controlling batch jobs. The queue need only be provided with priority numbers. Job requests are controlled by the queue, and the job requests in the queue are processed by a batch server. In Cloud computing, a highly reliable queue is provided as a service, which you can use to structure a highly reliable batch system with ease. You may prepare multiple queues depending on priority levels, with job requests put into the queues depending on their priority levels, to apply prioritization to batch processes. The performance (number) of batch servers corresponding to a queue must be in accordance with the priority level thereof.
Implementation
In AWS, the queue service is the Simple Queue Service (SQS). Multiple SQS queues may be prepared to prepare queues for individual priority levels (with a priority queue and a secondary queue). Moreover, you may also use the message Delayed Send function to delay process execution.
Use SQS to prepare multiple queues for the individual priority levels.
Place those processes to be executed immediately (job requests) in the high priority queue.
Prepare numbers of batch servers, for processing the job requests of the queues, depending on the priority levels.
Queues have a message "Delayed Send" function. You can use this to delay the time for starting a process.
Configuration
Benefits
You can increase or decrease the number of servers for processing jobs to change automatically the processing speeds of the priority queues and secondary queues.
You can handle performance and service requirements through merely increasing or decreasing the number of EC2 instances used in job processing.
Even if an EC2 were to fail, the messages (jobs) would remain in the queue service, enabling processing to be continued immediately upon recovery of the EC2 instance, producing a system that is robust to failure.
Cautions
Depending on the balance between the number of EC2 instances for performing the processes and the number of messages that are queued, there may be cases where processing in the secondary queue may be completed first, so you need to monitor the processing speeds in the primary queue and the secondary queue.
NEW QUESTION: 2
Which of the following individuals provides service feedback to the providers?
A. Suppliers
B. User representatives
C. Compliance officers
D. Project sponsors
Answer: B
NEW QUESTION: 3
What enables an administrator to create device groups in an IP-SAN for restricting device communications to a group?
A. Security identifier
B. NIC teaming
C. iSNS discovery domain
D. Demilitarized zone
Answer: C