9330420
Description
Flashcards by Sarwesh Saurabh, updated more than 1 year ago
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Created by Sarwesh Saurabh
almost 7 years ago
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| Question | Answer |
| 1: What are the "engine" options for ElastiCache? Redis & Memcached are the two engine options for ElastiCache | 2: What database service offers petabyte-scale data warehousing? Redshift |
| 3: The Availability Zone that your RDS database instance is located in is suffering from outages, and you have lost access to the database. What could you have done to prevent losing access to your database (in the event of this type of failure) without any downtime? | If multi-AZ failover is enabled, a duplicate copy of the database is kept in a separate AZ. If there is failure in the primary database's AZ, AWS will automatically swatch the CNAME DNS record from the primary to the failover backup instance. |
| 4: True or False: A read replica can be promoted to the primary instance. True | 5: What is NOT a benefit of using read replicas? AutomaticFailover in case of AZ failure is not benefit of read replicas |
| 6: True or False: You have to make your own backups of RDS databases, AWS does not automate the process | AWS provides automated backups of RDS databases, which are point-in-time snapshots. |
| 7: Which is NOT an attribute of DynamoDB? | DynamoDB is fully-managed (you have no access to the underlining OS), it is a NoSQL database platform, and it uses a schemaless key-value store. |
| 8: True or False: When setting up a DynamoDB database, you need to select the instance size and storage type. | When setting up a DynamoDB database, you only need to specify the required throughput capacity. There is no instance size or storage type to choose from. AWS scales compute power with your needs. |
| 9: What database service should you choose if you need petabyte-scale data warehousing? Redshift is for petabyte-scale data warehousing. |
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