What set of operations can you perform on RDS database logs?
- View, watch, and download (Ans)
- View, download, and purge
- View and watch
- View and download
What is a “node slice” in the Redshift architecture?
- The leader that managers communication with clients and nodes
- A partition of a compute node that works in parallel with others to complete operations (Ans)
- A compute node securely shared with multiple Redshift customers
- A snapshot of a node at a point in time
Which of the following is true of a multi-AZ database?
- It cannot be connected to via client tools
- All of these (Ans)
- It is the database instance used when you take backups
- It is synchronously updated from the source instance
You can restore an RDS database to any specific time during the retention period.
- False
- True (Ans)
A DynamoDB hash primary key is stored as an ordered index that can be queried.
- True
- False (Ans)
A Redshift security group is used to provide role-based access to the cluster.
- True
- False (Ans)
Why would you use a secondary index on a DynamoDB table?
- Define alternate keys to query and scan (Ans)
- Duplicate data for redundancy purposes
- All of these
- To manually synchronize data with a source table
Why are Redshift snapshots useful?
- Act as a disaster recovery tool by letting you stand up a cluster copy in another region
- Restoring from a snapshot retains all the data and metadata from the source cluster
- All of these (Ans)
- Snapshots can be shared with other AWS accounts
Redshift is based on PostgreSQL, but differs in supported functions, data types, and features.
- False
- True (Ans)
The COPY command can import data from S3, DynamoDB, or a server.
- No
- Yes (Ans)
In a global secondary index, the key values do NOT need to be unique.
- False
- True (Ans)
What billable components make up the AWS API Gateway?
- Requests, data out, and cache (Ans)
- API calls
- SEO + Virality
- Requests and data out only
What is the purpose of the execution role?
- Controls what events can trigger the lambda function
- Controls what resources the lambda function can access (Ans)
- Determines how long the function can run
- Terminates the lambda function based on rules
What is a REST API?
- A group of resources or methods
- Any website with a search feature
- An API not currently in use
- A group of resources and methods (Ans)
What API Gateway feature allows you to transform data?
- Mapping Templates (Ans)
- You can’t, it must be done in the backend service
- HTTP Methods
- IAM Permissions
Functions with multiple files or module dependencies should:
- Store the files in a publicly accessible location
- Zip the contents and upload directly to lambda (Ans)
- Reference the files using ARN names
- Avoid using lambda functions
What is the default access level if a policy does not exist?
- Web authorization headers are used
- An overriding policy applies
- Access denied (Ans)
- Access granted
One way to start using the API Gateway is:
- Integrating with your current Continuous Integration server
- Greenfield projects that have no legacy dependencies (Ans)
- Building the front-end interface for your customer portal
- Expanding the features of your existing API set
When deploying using the AWS API Gateway:
- Manually copy needed deployment files
- Build a server, patch, and deploy
- Click the deploy button (Ans)
- Deploy to an existing EC2 instance
API Keys can be used to authorize users.
- True
- False (Ans)
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