AWS BDS-C00 Certified Big Data Speciality Practice Test Set 4

Which of the following is false when it comes to the definition of the Global and Local secondary index for Dynamo DB tables?


Options are :

  • The primary key of a local secondary index must consist of both the partition key and sort key
  • Queries on local secondary indexes support eventual consistency and strong consistency.
  • Queries on global secondary indexes support eventual consistency and strong consistency. (Correct)
  • The primary key of a global secondary index can consist of just the partition key

Answer : Queries on global secondary indexes support eventual consistency and strong consistency.

When defining a Dynamo DB table which of the following are important factors to define during the design stage to ensure that the table performs efficiently. Choose 2 answers from the options given below ?


Options are :

  • The table write capacity (Correct)
  • The table triggers
  • The table read capacity (Correct)
  • The table storage

Answer : The table write capacity The table read capacity

Which of the following statements are true about secondary indexes in Dynamo DB. Choose 2 answers from the options given below?


Options are :

  • For the local secondary index, the partition key is the same as the base table (Correct)
  • For the global secondary index, the partition key and sort key cannot be different from those on the base
  • For the global secondary index, the partition key and sort key can be different from those on the base table
  • For the local secondary index, the partition key Is different from the base table.

Answer : For the local secondary index, the partition key is the same as the base table

Which of the following services can be used to automate the movement and transformation of data in AWS? Please select:


Options are :

  • AWS Dynamo DB
  • AWS Data Pipeline (Correct)
  • AWS Red shift
  • WS Elastic Search

Answer : AWS Data Pipeline

You currently have a test environment which consists of a Red shift cluster. Now that the testing phase is complete, this cluster Is going to be used for production use wherein the nodes are going to be used for prolonged periods of time. Which of the following steps can be taken to reduce the costs for the Red shift Cluster?


Options are :

  • Use Spot Instances because they are cheaper than On-Demand instances
  • Use Consolidating billing to reduce the costs
  • Use the On-demand nodes so that they can be shutdown whenever required.
  • Use Reserved instances for better overall discounts (Correct)

Answer : Use Reserved instances for better overall discounts

Which of the following services can AWS Kinesis fire hose load streaming data into? Choose 3 answers from the options given below


Options are :

  • AWS Red shift (Correct)
  • AWS S3 (Correct)
  • AWS Elastic Search (Correct)
  • AWS Dynamo DS

Answer : AWS Red shift AWS S3 AWS Elastic Search

Which of the following should not be used when you need a persistent storage option in AWS ?


Options are :

  • AWS Aurora
  • AWS Dynamo DB
  • AWS Kinesis (Correct)
  • AWS RDS

Answer : AWS Kinesis

If there is a need to run 2 types of queries using Red shift, how could that be achieved, Let?s say that you have long running and short running queries. How can you ensure that the short running queries also get a chance to run in Red shift?


Options are :

  • Create Users Groups and assign the queries to the User Groups accordingly (Correct)
  • Create a data distribution style for the queries
  • Choose the appropriate sort keys when designing the queries
  • Tag the queries and assign them to the Red shift node.

Answer : Create Users Groups and assign the queries to the User Groups accordingly

You can efficiently add new data to an existing table by using a combination of updates and inserts from a staging table. While Amazon Red shift does not support a single merge, or upsert. command to update a table from a single data source, you can perform a merge operation by creating a staging table and then using one of the methods described in this section to update the target table from the staging table. Which of the following can be done to ensure the right compression settings are used for a Red shift table, if the compression settings are being entered manually?


Options are :

  • Use Cloud watch logs to see how the data is being access
  • Use Cloud watch metrics to see how the data is being access
  • Use the Analyze compression command (Correct)
  • Use the Evaluate compression command

Answer : Use the Analyze compression command

In AWS Cloud search, in order to ensure that data is searchable, in which formats should documents be represented as. Choose 2 answers from the options given below ? Please select:


Options are :

  • TXT
  • YAML
  • JSON
  • XML (Correct)

Answer : XML

Which of the following can be used to improve efficiency when using the Kinesis Producer library? Choose 2 answers from the options given below Please select:


Options are :

  • Using more shards
  • Aggregation (Correct)
  • Using Collections (Correct)
  • Using Server side encryption

Answer : Aggregation Using Collections

You are planning on migrating an on-premise Oracle Database to AWS My SQL. You want to create the schema beforehand on the AWS My SQL Instance. Which of the following is the easiest approaches in getting this done?


Options are :

  • Use the AWS Schema Conversion Tool to generate the schema in the target database (Correct)
  • Use the AWS Config Tool to generate the schema in the target database
  • Create scripts to generate the schema in the target database
  • Use the AWS Database Generation Tool to generate the schema in the target database

Answer : Use the AWS Schema Conversion Tool to generate the schema in the target database

You are designing a Red shift table which will be used to store data from multiple loT enabled camera?s. The data which will be stored Is the Camera lD , the timestamp and the picture taken by the camera. Which of the following attributes would be preferable to store as the sort key for the Red shift table ?


Options are :

  • Camera ID
  • Combination of Camera ID and timestamp
  • The time stamp (Correct)
  • The image

Answer : The time stamp

Which of the following activities can be used to copy data from Amazon 53 to Amazon Red shift?


Options are :

  • Red shift copy Activity (Correct)
  • S3CopyActivity
  • Emr Activity
  • S3RedshiftCopyActi vity

Answer : Red shift copy Activity

Which of the following is not a scalar type for data types in Dynamo DB? Please select:


Options are :

  • Number
  • String
  • Map (Correct)
  • Binary

Answer : Map

Which of the following can be used to obtain higher-quality models using Amazon Machine Learning? Please select:


Options are :

  • Using Regularization (Correct)
  • Tagging data models
  • Conducting Evaluations (Correct)
  • Using constant data sources

Answer : Using Regularization Conducting Evaluations

Which of the following can be used to manage notebook documents using a web browser? Please select:


Options are :

  • EMR
  • D3.js
  • jupyter (Correct)
  • Quick sight

Answer : jupyter

Which of the following services are not supported when creating AWS loT Rule actions? Choose 2 answers from the options given below


Options are :

  • AWS Aurora (Correct)
  • AWS Dynamo DB
  • AWS Cloud watch
  • AWS Red shift (Correct)

Answer : AWS Aurora AWS Red shift

If you need to enable server-side data encryption with Amazon Kinesis Data Fire hose, which of the following can be used as the data source to ensure that the encryption can be possible Please select:


Options are :

  • Kinesis streams
  • Simple Storage Service (Correct)
  • Red shift
  • Dynamo DB

Answer : Simple Storage Service

You are designing an application which is going to be using Dynamo DB for data storage. The application is going to be processing a high number of read operations. Which of the following design aspects can actually help minimize the impact of the read operations on the Dynamo DB target table? Please select:


Options are :

  • Deploy a read replica of the Dynamo DB table
  • Deploy a secondary Dynamo DB target table to absorb the read operation
  • Deploy an Elastic Cache Solution (Correct)
  • Deploy a secondary RDS database to absorb the read operation

Answer : Deploy an Elastic Cache Solution

You currently have a Kinesis stream configured in AWS. During the monitoring session you can see that certain records are being skipped. Where should you start searching to analyze the underlying issue? Please select:


Options are :

  • Check that the streams have been tagged properly
  • Check the limit for the Put Records parameter
  • Check the code for process Records method (Correct)
  • Check the limit for the Get Records parameter

Answer : Check the code for process Records method

Which of the following statements on resizing Red shift clusters is false?


Options are :

  • You can continue to perform read and write operations as the duster is being resized (Correct)
  • One can use the snapshot and restore operations to make a copy of an existing cluster and then resize the new cluster
  • You can scale the cluster in or out by changing the number of nodes
  • One can use the resize operation with an existing cluster

Answer : You can continue to perform read and write operations as the duster is being resized

You currently have an application that is making use of Kinesis Data streams. You have noticed that there a lot of provisioned throughput errors coming from Dynamo DB. Which of the following can be a cause of tw Choose 2 answers from the options given below ?


Options are :

  • The application is carrying out frequent check pointing (Correct)
  • The Kinesis stream consists of a few shards, hence the data is not being provisioned properly
  • The application is not carrying out frequent check pointing
  • The Kinesis stream consists of too many shards (Correct)

Answer : The application is carrying out frequent check pointing The Kinesis stream consists of too many shards

You host a site in AWS which sells online courses. You are trying to determine which is the best price the courses would be sold for? You want to use the Amazon Machine learning service for this. Which of the following Learning Models would be beneficial for this?


Options are :

  • Binary Classification Model
  • Regression Model (Correct)
  • Single Classification Model
  • Multiclass Classification Model

Answer : Regression Model

Which of the following is incorrect when it comes to the Kinesis client library?


Options are :

  • You can enumerate the shards In the stream
  • You can pull data records from the stream
  • You can create a stream using the KCL (Correct)
  • It can be used to connect to a stream

Answer : You can create a stream using the KCL

You currently have a Red shift cluster with automated snapshots. You need to maintain a particular snapshot for a period of 2 months. How can you achieve this?


Options are :

  • Ensure that automated snapshots setting is set to 60 days
  • Create a manual snapshot from the automated snapshot (Correct)
  • Create another Red shift cluster from the automated snapshot
  • Send a request to AWS to increase the duration of the snapshot

Answer : Create a manual snapshot from the automated snapshot

Which of the following is where the metadata definition is stored in the Aws Glue service? Please select:


Options are :

  • Schema
  • Config file
  • Table (Correct)
  • Item

Answer : Table

Which of the following use the bulk API to upload data into your Amazon Elastic Search domain? Please select:


Options are :

  • Node.js
  • Kibana
  • . Logstash (Correct)
  • Amazon EMR

Answer : . Logstash

You have a requirement for creating a visualization application that would be based on sales of products from your company from various regions. Which of the following can be used to create a fully server less application model? Choose 3 answers from the options given below ?


Options are :

  • Java
  • AWS Dynamo DB
  • D3.js (Correct)
  • AWSS3

Answer : D3.js

Which of the following statements are true about secondary indexes in Dynamo DB. Choose 2 answers from the options given below?


Options are :

  • For the global secondary index, the partition key and sort key can be different from those on the base table
  • For the global secondary index, the partition key and sort key cannot be different from those on the base
  • For the local secondary index, the partition key is the same as the base table. (Correct)
  • For the local secondary index, the partition key Is different from the base table.

Answer : For the local secondary index, the partition key is the same as the base table.

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