EMT Practice Test

1. Question Content...

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Question1: You want to understand more about how users browse your public website. For example, you want to know which pages they visit prior to placing an order. You have a server farm of 100 web servers hosting your website. Which is the most efficient process to gather these web servers across logs into traditional Hadoop ecosystem.

Question2: One Alibaba Cloud account is entitled to join only one organization that uses DataWorks.

Question3: Data Migration Unit (DMU) is used to measure the amount of resources consumed by data integration, including CPU, memory, and network. One DMU represents the minimum amount of resources used for a data synchronization task.
Score 1

Question4: DataWorks can be used to develop and configure data sync tasks. Which of the following statements are correct? (Number of correct answers: 3) Score 2

Question5: A dataset includes the following items (time, region, sales amount). If you want to present the information above in a chart, ______ is applicable.
Score 2

Question6: In each release of E-MapReduce, the software and software version are flexible. You can select multiple software versions.
Score 1

Question7: JindoFS in E-MapReduce provided by SmartData uses OSS as the storage back end.
Score 1

Question8: When odpscmd is used to connect to a project in MaxCompute, the command ______ can be executed to view the size of the space occupied by table table_a.
Score 2

Question9: Where is the meta data(e.g.,table schemas) in Hive?
Score 2

Question10: DataWorks provides two billing methods: Pay-As-You-Go (post-payment) and subscription (prepayment).
When DataWorks is activated in pay-as-you-go mode, Which of the following billing items will not apply?
Score 2

Question11: Alibaba Cloud Quick BI reporting tools support a variety of data sources, facilitating users to analyze and present their data from different data sources. ______ is not supported as a data source yet.
Score 2

Question12: In MaxCompute, you can use Tunnel command line for data upload and download. Which of the following description of Tunnel command is NOT correct:
Score 2

Question13: MaxCompute supports two kinds of charging methods: Pay-As-You-Go and Subscription (CU cost).
Pay-As-You-Go means each task is measured according to the input size by job cost. In this charging method the billing items do not include charges due to ______.
Score 2

Question14: Alibaba Cloud Elastic MapReduce (E-MapReduce) is a big data processing solution to quickly process huge amounts of data. Based on open source Apache Hadoop and Apache Spark, E-MapReduce flexibly manages your big data use cases such as trend analysis, data warehousing, and analysis of continuously streaming data.
Score 1

Question15: You are working on a project where you need to chain together MapReduce, Hive jobs.
You also need the ability to use forks, decision points, and path joins. Which ecosystem project should you use to perform these actions?

Question16: If a MySQL database contains 100 tables, and jack wants to migrate all those tables to MaxCompute using DataWorks Data Integration, the conventional method would require him to configure 100 data synchronization tasks. With _______ feature in DataWorks, he can upload all tables at the same time.
Score 2

Question17: MaxCompute is a general purpose, fully managed, multi-tenancy data processing platform for largescale data warehousing, and it is mainly used for storage and computing of batch structured data. Which of the following is not a use case for MaxCompute?
Score 2

Question18: There are various methods for accessing to MaxCompute, for example, through management console, client command line, and Java API. Command line tool odpscmd can be used to create, operate, or delete a table in a project.
Score 1

Question19: MaxCompute Tunnel provides high concurrency data upload and download services. User can use the Tunnel service to upload or download the data to MaxCompute. Which of the following descriptions about Tunnel is NOT correct:
Score 2

Question20: MaxCompute is a fast and fully-managed TB/PB-level data warehousing solution provided by Alibaba Cloud. Which of the following product features are correct? ______ (Number of correct answers: 3) Score 2

Question21: Scenario: Jack is the administrator of project prj1. A new team member, Alice (already has an Alibaba Cloud account [email protected]), applies for joining this project with the following permissions: view table lists, submit jobs, and create tables. Which of the following SQL statements is useless:
Score 2

Question22: In order to ensure smooth processing of tasks in the Dataworks data development kit, you must create an AccessKey. An AccessKey is primarily used for access permission verification between various Alibaba Cloud products. The AccessKey has two parts, they are ____. (Number of correct answers: 2) Score 2

Question23: Alibaba Cloud E-MapReduce can be easily plugged with other
Alibaba Cloud services such as Log Service, ONS, MNS that act
as data ingestion channels from real-time data streams. Which
of the following descriptions about real-time processing are
correct? (Number of correct answers: 3)

Question24: A start-up company wants to use Alibaba Cloud MaxCompute to provide product recommendation services for its users. However, the company does not have much users at the initial stage, while the charge for MaxCompute is higher than that of ApsaraDB RDS, so the company should be recommended to use MaxCompute service until the number of its users increases to a certain size.
Score 1

Question25: MaxCompute SQL is suitable for processing less real-time massive data, and employs a syntax similar to that of SQL. The efficiency of data query can be improved through creating proper indexes in the table.
Score 1

Question26: Your company stores user profile records in an OLTP databases. You want to join the serecords with web server logs you have already ingested into the Hadoop file system.
What is the best way to obtain and ingest these user records?