Practice-Exam01 Flashcards by Mohamed Tleis

What are the Programming Languages supported by Lambda Runtime?

C# / .NET
Go
Java
Node.js
Python
Ruby

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Name a few languages that are not supported by lambda runtime.

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What to do if upload to S3 fails during peak hours?

What to do to optimize S3 performance?

Create custom prefixes within a single bucket. Upload daily files into those prefixed locations.

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How does the availability of Standard-IA differ from Standard Access?

9% Standard-IA

99. 99% Standard

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What is the latency of the Standard-IA access?

ms low latency.

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What are the different types of AWS Storage Gateway ?

Tape Gateway
File Gateway
Volume Gateway

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Which Storage Gateway supports NFS interface?

AWS Storage Gateway - File Gateway.

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Which Storage Gateway supports iSCSI block storage?

AWS Storage Gateway- Volume Gateway

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What Protocol / Interface does site-to-site support? Give an example on unsupported interface.

Supports IPSec

Does not support NFS interface for file integration

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Name an S3 feature that can only be suspended after it is enabled.

Versioning. It can be suspended. A bucket cannot return to an nu-versioned state.

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Which Storage is best for query data?

Standard storage class.
Glacier instant retrieval is charged for 90 days min.
Storage-IA is charged for 30 days min.

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When can Storage type be changed from Standard to Standard-IA ?

After min. 30 days.

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What Can be done if you delete the Customer Master Key (CMK) ?

By default the delete is pending for 30 days.

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When is multi-part upload to S3 recommended ?

In general for files greater than 100 MB.

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How can AWS Global Accelerator help with S3 upload?

AWS Global accelerator does not help with S3 file uploads.

It is meant to improve availability & performance of applications.

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Which service supports Microsoft Distributed File System (DFS) ?

Amazon FSx for Windows File Server.

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how to interconnect VPCs with On-premises data centers?

Use VPC transit gateway.

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What AWS services to federate your workforce into AWS accounts ?

IAM (multiple directories)

2. SSO (single directory)

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Which service is one that does not support Federated accounts ?

AWS Organisations

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Which service helps with content-based routing?

ALB

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Which service improves availability & performance of an application using UDP protocol? & supports fast regional failover?

Global Accelarator

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What type of Storage can be used as boot volume?

SSDs

Instance Store

What replication type does an RDS DB Multi-AZ deployment follow?

Synchronous replication

What replication type does an RDS DB deployment to read-replicas follow?

Asynchronous replication

How to download logs before an EC2 terminates?

Use Auto-Scaling group lifecycle hook

How to delete GuardDuty data when you want to stop it?

Disable the service!

Which Storage type is recommended for data replicated on a fleet of EC2 instances?

Instance store

Configure additional Confirmation to delete S3 objects ?

No such thing

No Targets registered for ALB, which error would arise?

HTTP 503 : No Service available

If Image upload with S3TA did not make a difference. What charges are incurred?

No charges for image upload or S3TA! - Data in to S3 are free. - Only accelerated S3TA costs are incurred.

What can be used and can not be used to schedule scaling ? Ex. 10 EC2 instances at a particular time.

Scaling Scheduler can be used. | CANNOT USE: Simple & Target tracking policies

What is the quota for Lambda concurrent executions per account per region ?

1000

What to do if Lambda concurrent executions exceeds the quota?

Contact AWS support

Launch type prices for ECS EC2 Vs. ECS Fargate ?

ECS EC2 launch type: Used EC2 instances & EBS volumes. ECS Fargate: vCPUs and memory requests.

A 'target group' target types ?

- Instance - IP - Lambda Function

IP address target type ?

Private IP address

GuardDuty data sources?

- CloudTrail events, - VPC Flow Logs, - DNS logs

Kinesis Firehose cannot directly write into ____ ?

DynamoDB table.

When copying AMI from region A to B. What is copied?

The AMI image + underlying Snapshot.

Unsupported life-cycle transitions for S3 storage classes ?

- Any storage class ==> S3 Standard storage class. - Any storage class ==> Reduced Redundancy . - S3 Intelligent-Tiering ==> S3 Standard-IA . - S3 One Zone-IA ==> S3 Standard-IA - S3 One Zone-IA ==> S3 Intelligent-Tiering.

Ways to control what EC2 instances can access EFS file system ?

- Use VPC security group rules (control network traffic) - Use IAM policies (control what clients can mount the EFS) - Use EFS Access Points (manage application access).

SSE-KMS is preferred for S3 objects encryption. Why SSE-C (customer) and SSE-S3 are not options sometimes?

SSE-C and SSE-S3 has no option to audit trail to usage of encryption keys.

CTO decided to migrate 80TB of data to the cloud in 2 weeks. Why DirectConnect is not a good option?

DirectConnect needs a month to setup.

How to process 1000 'ordered' messages per second in SQS ?

Process in batches of 4 messages per operation = 1200 message/second Default : 300 message / second; Maximum batch of 10 messages = 3000

Name 3 services that help in throttling or buffering of requests.

- Amazon API Gateway, - Amazon SQS, - Amazon Kinesis

Name 3 services that does NOT throttle requests.

- ELB - SNS - Gateway Endpoints

Does lambda function throttle requests?

Throttles requests with error code 429 status code.

Why VPC transit Gateway is not a good option in some scenarios?

It cannot establish a low latency and high throughput connection.

Why in some scenarios ElastiCache for Memcached is not a cache option?

It is in-memory key-value store, used as cache for data store. Used with relational or NoSQL database. ElastiCache Memcached cannot be used as a cache to serve static content from S3

Name two ways to place a retention period on an object version?

1. Explicitly on the object version. | 2. Through a bucket default setting.

What might be a reason not to use Global Accelerator to make an application more resilient to periodic spikes in request rates?

CloudFront and Aurora Replica are better for improving application resiliency.

What could be a reason not to use Kinesis Data Analytics to load, transform and store data into S3?

Kinesis Data Analytics cannot directly ingest data from the source as it ingests data either from Kinesis Data Streams or Kinesis Data Firehose,

What volume types can to used to enable Multi-Attach on Nitro-based EC2 instances? & what types cannot be used?

- Use io1/io2 volumes | - gp2/3 are not supported for Multi-Attach.

What is a Autoscaling group lifecycle hooks for?

perform custom actions as the Auto Scaling group launches or terminates instances