Let’s have a look at the recent Amazon OA2 work simulation questions and Amazon OA work style questions.
What is the Amazon Work Simulation Test, and What is Its Purpose?
The Amazon Work Simulation test is a crucial step in evaluating candidates for roles within the company. Designed to mirror real-world scenarios, thisassessment examines how well candidates can navigate various workplace situations that employees may encounter on the job.
Structure of the Test
- Modules: The test is divided into five distinct sections, known as modules.
- Duration: It typically takes candidates around 50 minutes to complete the entire assessment.
Purpose of the Test
The primary goal of the Amazon Work Simulation test is to appraise how efficiently candidates manage and resolve workplace challenges. By simulatingthese real-life situations, the test helps identify individuals who possess the necessary problem-solving skills and decision-making abilities tothrive in the dynamic environment of the organization.
This type of assessment not only evaluates technical capabilities but also gauges interpersonal skills, ensuring a well-rounded selection process.
Amazon OA2 Work Simulation Question 1
Rate the effectiveness of each action below as if it were your next step.
Reference answer
Create a proof of concept system to test.
- Very Effective
Clarify requirements with stakeholders.
- Extremely Effective
Write fundamental library code.
- Moderately Effective
Create a database schema.
- Very Effective
Schedule a meeting with the design team.
- Slightly Effective
Amazon OA2 Work Simulation Question 2
你和团队中的其他工程师被分配开发一个用于新 Amazon Prime 歌唱节目 – Amazon Voice 的实时投票服务。最终的节目定于 5 周后举行。节目结束时，将有一个 5 分钟的投票时段，在此期间所有的投票将被统计。
发件人：Ming，产品经理
主题：Amazon Voice – 会议记录
大家好，再次感谢大家今天早上参加会议。根据我们的讨论，系统需要在以下条件下运行：
- 在 5 分钟的投票期间，每秒更新一次投票结果。
- 允许顾客在投票结束前查看并更新他们的投票。
- 系统需要能够处理数百万顾客在 5 分钟投票时段内同时投票。
- 系统需要在投票期间保持可用。
Below are vote storage strategies you could use given the requirements from the product manager’s email. Rate the effectiveness of each strategy.
Reference answer
Key-value database – used for storing key-value pairs in a distributed manner (e.g., Amazon DynamoDB, Redis, or Cassandra).
- Extremely Effective
- Key-value databases are highly effective for real-time applications due to their low-latency and high-throughput capabilities. They can easilyhandle millions of concurrent votes and provide quick updates.
Document database – used for storing JSON documents (e.g., MongoDB, Azure CosmosDB, CouchDB).
- Very Effective
- Document databases are flexible and can handle complex data structures. They are also scalable and can handle high volumes of data, making them suitablefor this use case.
Graph database – used for storing data with complex relationships (e.g., Amazon Neptune, Neo4J, or Tiger DB).
- Slightly Effective
- Graph databases are designed for managing complex relationships and are not typically optimized for high-throughput, low-latency operations neededfor real-time voting.
Ledger database – store using an append-only record journal (e.g., Amazon QLDB).
- Moderately Effective
- Ledger databases provide an immutable record of all transactions, which is beneficial for auditability but might introduce unnecessary complexity andlatency for real-time vote updates.
Distributed data processing system – Apache Hadoop/Spark to process tracking data.
- Slightly Effective
- Distributed data processing systems are excellent for batch processing large datasets but are not designed for real-time processing required in avoting scenario. They would add significant latency.
Amazon OA2 Work Simulation Question 3
邮件 1: 发件人：新项目提醒
主题：概述 – 库存管理系统
你的团队正在构建一个新的库存管理系统，该系统将作为 SaaS 产品（软件即服务）提供。
请点击“下一步”按钮开始新项目。
邮件 2:
你好，
产品负责人已最终确定库存管理系统的需求。我们需要设计一个支持这些需求的系统。我希望你能帮助完成这项工作。
Rate the effectiveness of each action below as if it were your next step.
Reference answer
Set up time to discuss the requirements with the product owner.
- Extremely Effective
- Discussing the requirements ensures a clear understanding of the project scope and objectives, which is crucial for effective system design.
Sketch together a high-level diagram.
- Very Effective
- A high-level diagram helps visualize the system’s structure and components, providing a foundation for further detailed design anddiscussion.
Set up an operational dashboard of metrics, alarms, and documentation.
- Moderately Effective
- While important for the operational phase, setting up a dashboard is not a priority at the initial architecture stage.
Develop a proof of concept with your team and senior engineers to test the key system constructs.
- Very Effective
- A proof of concept can validate critical aspects of the system, identify potential issues early, and guide further development.
Prepare and host a system-level architecture review.
- Moderately Effective
- An architecture review is valuable but should follow the initial discussions and conceptual designs to ensure meaningful input and feedback.
Question 4
邮件：
你的团队正在构建一个新的库存管理系统，该系统将作为 SaaS 产品（软件即服务）提供。
Kate（软件开发工程师）：
嘿 – 我被要求开发一个解决方案，提供库存项目的图像缩略图。我已经确定了几个潜在的存储选项，但我希望听听你对每个选项的想法。
Below are image storage options you could use. Rate the effectiveness of each option.
Reference answer
Flat/file store.
- Slightly Effective
- A flat/file store can be simple to implement but lacks scalability and performance features needed for a SaaS product.
Relational database.
- Moderately Effective
- Relational databases can store images as BLOBs, but this approach can lead to performance issues and isn’t as scalable as other options forhandling large volumes of image data.
Key-value data store.
- Very Effective
- Key-value stores like Amazon DynamoDB or Redis are well-suited for storing images efficiently and retrieving them quickly, making them a good choice forthis use case.
Elastic search.
- Slightly Effective
- Elastic search is optimized for text search and analytics rather than image storage, so it isn’t the most effective option for storing imagethumbnails.
Cloud file store.
- Extremely Effective
- Cloud file stores like Amazon S3 or Google Cloud Storage are highly scalable, cost-effective, and designed for storing and serving large volumes of imagefiles. They are typically the best option for this use case.
Question 5
邮件 1:
发件人：新项目提醒
主题：概述 – 交通视频服务
Amazon 正在为一个大型城市环境构建一个交通视频服务。各个交通摄像头将根据其物理能力、限制和配置将更新发送到中央服务。由于流量不稳定，计划使用消息队列，因此必须设计并支持适当的消息格式。
请点击“下一步”按钮开始新项目。
邮件 2:
发件人：Na’imah，软件开发经理
主题：欢迎 – 系统需求
嘿，
很高兴你加入了我们这个项目。我们的团队负责开发产品消息系统的第一个版本。以下是产品经理提供的需求：
- 一个消息格式的版本控制系统。
- 针对消息内各个组件的二进制数据反序列化/序列化系统。
- 支持不同用途的消息。
- 消息时间戳和校验和。
我很期待听到你认为我们应该采取的行动，以满足这些需求。
Below are actions you could take to meet the requirements. Rate the priority of each action.
Reference answer
Identify dashboards and graphs to assess system performance.
- Low Priority
- While monitoring is important, it is not the immediate priority when defining the message format and system capabilities.
Determine how the queue is configured to handle the exceptions.
- Medium Priority
- Handling exceptions in the message queue is crucial for reliability but should follow defining the core message format and system requirements.
Research industry standard message formats.
- Essential
- Researching industry-standard message formats is critical to ensure the messaging system is designed using best practices and can interoperate withother systems.
List the purposes messages will serve.
- High Priority
- Identifying the different purposes of messages is essential to design a flexible and effective message format that meets all the system requirements.
Question 6
邮件：
Amazon 正在为一个大型城市环境构建一个交通视频服务。各个交通摄像头将根据其物理能力、限制和配置将更新发送到中央服务。由于流量不稳定，计划使用消息队列，因此必须设计并支持适当的消息格式。
Anne（首席软件开发工程师）：
嘿 – 这些交通摄像头产生的一些数据可能非常大，而客户希望将这些消息传输到服务端。我有一些关于如何做到这一点的想法，但我很想听听你们的看法。
Reference answer
Use different message types to transmit the request metadata and large data.
- Very Effective
- This approach can efficiently separate metadata from large data, allowing for better handling and processing of each part.
Fragment the large data into multiple messages.
- Extremely Effective
- Fragmenting large data into smaller, manageable chunks ensures that the system can handle large volumes without overwhelming the message queue. This isa well-known technique used in many messaging systems.
Develop a streaming protocol for large messages.
- Extremely Effective
- A streaming protocol can efficiently handle large messages by transmitting data in a continuous flow, which is particularly effective for real-timesystems like traffic video services.
Develop a cadence to send large messages during low volume times.
- Moderately Effective
- This approach can be effective in reducing the load during peak times, but it depends on the predictability of traffic patterns and may not always befeasible in real-time systems.
Physically download large messages from each location.
- Not at all Effective
- Physically downloading data is impractical and inefficient for a real-time service, as it introduces significant delays and logistical challenges.
Question 7
邮件：
Amazon 正在为一个大型城市环境构建一个交通视频服务。各个交通摄像头将根据其物理能力、限制和配置将更新发送到中央服务。由于流量不稳定，计划使用消息队列，因此必须设计并支持适当的消息格式。
发件人： Robert，软件开发工程师
主题： 服务问题
嘿，
我们刚刚接到通知，服务出现了一个问题，消息丢失了。我们需要监控消息丢失情况，并让我们的系统在未来更具韧性。我很想听听你们的想法，看看我们该如何做。
Robert
Below are options that could make the system more resilient. Rate the effectiveness of each option.
Reference answer
Add a dead letter queue to handle failure messages.
- Extremely Effective
- A dead letter queue can capture and store messages that could not be processed, allowing for troubleshooting and reprocessing without data loss.
Review the retry configuration from the queue.
- Very Effective
- Proper retry configuration can significantly reduce message drops by attempting to reprocess messages before they are permanently discarded.
Increase message storage time as a redundancy measure.
- Moderately Effective
- Increasing storage time can help ensure that messages are not prematurely deleted, providing more time for retrying message processing. However, itdoesn’t address the root cause of message drops.
Use a time-to-live configuration to store the successfully processed messages.
- Slightly Effective
- While a time-to-live configuration can help manage storage of successfully processed messages, it doesn’t directly address messagedrops or resilience.
Use another queue to store the successfully processed messages.
- Slightly Effective
- Storing successfully processed messages in another queue helps with organization but doesn’t directly contribute to preventing messagedrops or improving resilience.
Question 8
发件人：Lamorne，产品经理
主题：系统可用性
你好，
我写这封邮件是关于你正在开发的库存管理系统的。我们即将将这个产品推出给全球客户，因此系统的可用性非常重要。我想听听你关于如何确保系统可用性的一些想法。
Lamorne
Reference answer
Write a script that can be manually run to fix any unresponsive servers.
- Rating: Extremely Effective
Ensure that we have the ability to add more servers as needed to respond to demand.
- Rating: Extremely Effective
Conduct a load test and ensure that the results are analyzed thoroughly.
- Rating: Very Effective
Configure the database to run automated daily backups.
- Rating: Moderate Effective
Increase the logging level to include debugging messages.
- Rating: Slight Effective
Move local/regional settings into a configuration service.
- Rating: Slight Effective
经过我们的强力的面试辅助，OA代写，候选人通过这些面试题的解析和沟通，面试官不仅了解了候选人的编程能力，也看到了我在解决问题过程中清晰的思路和有效的沟通技巧，祝大家面试顺利！
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If you also need our Amazon OA2 work simulation assistance service, please contact us immediately.
If you want to get more information about Amazon interviews, you can also read this article Amazon interview.
