This Quiz contains totally 25 Questions each carry 1 point for you.
- What does EMR stand for in the context of AWS?
Elastic MapReduce
Elastic Machine Recognition
Elastic Memory Reservoir
Elastic Maintenance Routine
Correct!
Wrong!
2. Which of the following is NOT a component of the EMR architecture?
Master Node
Core Node
Task Node
Application Node
Correct!
Wrong!
3. What is the primary purpose of the Master node in an EMR cluster?
Storing data
Running applications
Coordinating and managing the cluster
Distributing tasks to other nodes
Correct!
Wrong!
4. Which EMR node type can be used to increase processing capacity without increasing HDFS storage capacity?
Master node
Core node
Task node
All of the above
Correct!
Wrong!
5. Which AWS service can be used to monitor and manage EMR jobs?
AWS CloudTrail
Amazon CloudWatch
AWS Step Functions
AWS Lambda
Correct!
Wrong!
6. Which of the following is a method to submit a job to an EMR cluster?
AWS Management Console
AWS CLI
SDKs
All of the above
Correct!
Wrong!
7. Which of the following big data frameworks is NOT supported by EMR?
Hadoop
Spark
Flink
Kubernetes
Correct!
Wrong!
8. Which EMR component allows you to run SQL queries on data stored in Amazon S3?
Presto
Apache Pig
Apache Hive
Apache HBase
Correct!
Wrong!
9. Which pricing model is recommended for cost optimization in long-running EMR clusters?
On-Demand Instances
Spot Instances
Reserved Instances
Savings Plans
Correct!
Wrong!
10. What is a best practice for cost optimization in EMR?
Use Spot Instances for Task nodes
Use On-Demand Instances for all nodes
Use Reserved Instances for all nodes
Use only Master nodes
Correct!
Wrong!
11. Which of the following is a best practice for optimizing EMR cluster performance?
Use a single large Master node
Configure auto-scaling for Core and Task nodes
Use only On-Demand Instances
Disable data compression
Correct!
Wrong!
12. What is the purpose of EMRFS (EMR File System)?
A distributed file system for EMR
A proprietary file system for AWS
An interface to access data in Amazon S3 for EMR
A file system for EMR Master nodes
Correct!
Wrong!
13. What is the default file system used by EMR?
HDFS
Amazon S3
EMRFS
GlusterFS
Correct!
Wrong!
14. How can you secure data stored in Amazon S3 for use with EMR?
Use AWS KMS to encrypt data
Enable versioning on Amazon S3
Enable MFA Delete on Amazon S3
Enable VPC Flow Logs
Correct!
Wrong!
15. How can you optimize data processing in EMR for cost savings?
Use data compression
Use columnar storage formats
Partition data
All of the above
Correct!
Wrong!
16. How can you enable auto-scaling for EMR clusters?
Using AWS Management Console
AWS CLI
SDKs
All of the above
Correct!
Wrong!
17. What is the benefit of using Amazon EMR Block Public Access?
It reduces storage costs
It increases cluster performance
It improves data security
It enables auto-scaling
Correct!
Wrong!
18. Which of the following is NOT a reason to use EMR over self-managed Hadoop clusters?
Simplified cluster management
Integration with other AWS services
Lower costs
Requires in-depth Hadoop administration knowledge
Correct!
Wrong!
19. Which feature of EMR allows you to submit jobs to the cluster without the need to install additional software on your local machine?
EMR Notebooks
EMRFS
Amazon CloudWatch
AWS Glue
Correct!
Wrong!
20. What is the purpose of EMR Instance Fleets?
To manage multiple EMR clusters simultaneously
To provide a group of EC2 instances with different instance types and purchasing options
To automatically scale EMR clusters
To store data in Amazon S3 for EMR clusters
Correct!
Wrong!
21. Which of the following is NOT a best practice for securing an EMR cluster?
Enable encryption
Enable Amazon EMR Block Public Access
Store data in Amazon S3
Use weak passwords for EMR user accounts
Correct!
Wrong!
22. What is the primary benefit of using Amazon EMR with Spot Instances?
Improved performance
Increased storage capacity
Enhanced data security
Cost savings
Correct!
Wrong!
23. What is the purpose of using AWS Glue with EMR?
To provide a fully managed ETL service
To monitor EMR cluster performance
To automatically scale EMR clusters
To store data in Amazon S3 for EMR clusters
Correct!
Wrong!
24. What is the purpose of using Amazon CloudWatch with EMR?
To provide a fully managed ETL service
To monitor EMR cluster performance
To automatically scale EMR clusters
To store data in Amazon S3 for EMR clusters
Correct!
Wrong!
25. What is the primary benefit of using EMRFS?
Improved performance
Increased storage capacity
Enhanced data security
Cost savings
Correct!
Wrong!
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AWS Elastic MapReduce – Quiz
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