Practice test 1 Flashcards
Lambda@Edge runs closer …
… to the user location
How can you setup an origin fail over in CloudFront ?
Set up primary and a secondary origins. CloudFront automatically switches when the primary origin returns specific status code failures
What is HTTP code 504 ?
504 is Gateway Timeout
How can you alleviate occasional 504 errors in Cloud Front ?
Setting up origin fail over to a secondary origin
How to increase the Cache duration in Cloud Front ?
Add the Cache-Control max-age directive to your objects
Do you poll or do you subscribe to an SNS topic?
You subscribe
What do you do at the end of the test ?
Verify that you always selected TWO options when needed
S3 Hierarchy
- S3 Standard
- S3 Standard-IA
- S3 Intelligent-Tiering
- S3 One Zone-IA
- S3 Glacier
- S3 Glacier Deep Archive
What is Amazon DLM is used for ?
You can use Amazon Data Lifecycle Manager to automate the creation, retention, and deletion of EBS snapshots and EBS-backed AMIs.
IAM DB Authentication can be used to…
… authenticate users in RDS databases MySQL and PostgresSQL
How to better monitor and RDS database ?
Enable Enhanced Monitoring in RDS
How can you protect applications behind API Gateway from traffic spikes ?
Use throttling limits in API Gateway
Which custom metrics in CloudWatch need to be set up manually ?
- Memory utilization
- Disk swap utilization
- Disk space utilization
- Page file utilization
- Log collection
Which EC2 Metric are available by default in CloudWatch ?
- CPU Utilization
- Network Utilization (Bytes in/out)
- Disk reads and writes
What is AWS STS used for ?
AWS Security Token Service is used to generate temporary tokens
What is AWS WorkDocs ?
A way to share documents. It is like Google Drive or One Drive. Cannot be integrated with S3.
Which is the first EC2 instance to be terminated in an Auto Scaling Group (ASG)
The EC2 instance launched from the oldest launch configuration.
Note: I think it first tries to balance the AZ, so it would choose the AZ with most instances and then choose an instance from there.
ASG instance termination order: (by default)
- Choose AZ with the most instances
- Use oldest launch configuration
- Closest to the next billing hour
- Random
What is the AWS Nitro System ?
The underlying platform for our next generation of EC2 instances. It has completely re-imagined our virtualization infrastructure. Hypervisor in hardware.
Nitro componentes ?
- Nitro cards
- Nitro security chip
- Nitro Hypervisor
- Nitro Enclaves
- Nitro TPM
How to invoke a lambda function from RDS ?
Use a native function or a stored procedure
RDS Events provides events for…
Operational events such as DB instance events, DB parameter group, DB security,
It doesn’t trigger events for DML (inserts, updates and deletes)
Command line flags supported by CloudTrail ?
–is-multi-region-trail and –include-global-service-events
EBS Type for a database with high-throughput workloads performing small, random I/O operations
Provisioned IOPS SSD (io1)
(SSD/HDD) Small random IO Operations
SSD
(SDD/HDD) large sequential I/O operations
HDD
(SDD/HDD) Throughput oriented storage for large volumes of data that is infrequently accessed
HDD
SDD Dominant Performance Attribute
IOPS
HDD dominant performance attribute
Throughput (MiB/s)
AWS Directory Service AD Connector
AD Connector is a directory gateway with which you can redirect directory requests to your on-premises Microsoft Active Directory
