AWS SAA Exam Questions Complete Solutions New Update (100% Verified Pass)
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AWS SAA
AWS SAA Exam Questions Complete Solutions New Update (100% Verified Pass)
Auto Scaling - Answers -AWS Auto Scaling lets you build scaling plans that automate how groups of different resources respond to changes in demand.
- better fault tolerance + better availability
- default will terminate...
AWS SAA Exam Questions
Complete Solutions New Update
(100% Verified Pass)
Auto Scaling - Answers -AWS Auto Scaling lets you build scaling plans that automate
how groups of different resources respond to changes in demand.
- better fault tolerance + better availability
- default will terminate AZ with most instances or oldest launch configuration
- default value is 300 seconds
S3 Cross Region Replication - Answers -- allows you to copy or replicate data in 2
regions
- allows for low latency, disaster recovery, compliance
- versioning must be enables
- only new uploads in original bucket replicated
ELB Cross Zone Load Balacing - Answers -- guarantees even distribution across AZs
rather than just within a single AZ.
- reduces the need to maintain equivalent numbers of instances in each enabled
Availability Zone, and improves your application's ability to handle the loss of one or
more instances.
CORS (Cross-origin resource sharing) - Answers -- mechanism that uses additional
HTTP headers to tell browsers to give a web application running at one origin to interact
in different domain
- XML doc with rules with origins
TCP vs UDP - Answers -- transmission control protocol: 3 way handshake for
acknowledgment
- user datagram protocol: continuous communication without acknowledging connection
ELB - Answers -- distributes incoming application traffic across multiple targets
- Application, Network, Classic LB's
- regional service ( new ELB for each region)
Application Load Balancer - Answers -- HTTP(s) + Layer 7 OSi
- path/host based routing, bi-directional streaming, containerized applications
- flexible application and TLS termination
Network Load Balancer - Answers -- suited for TCP traffic where performance is
required and they balance load on layer 4 (millions request/s with low lat)
- extreme performance + static IP ADDRESS
, Cloudwatch Metrics - Answers -- collects logs, metrics, events (Performance), alarms,
dashboards
- EC2 ( CPU, network, disk, health hyperviser)
- ever 5 min (defaults), can be 1 min with detailed monitor
- for CUSTOM metrics, need to install Cloudwatch agent on EC2 instance
Metrics not collected by EC2 Cloudwatch - Answers -- memory utilization
- disc swap/ disc space utilization
- page utilization
- log collection
Transit Gateway - Answers -- interconnectivity between VPC's & on prem network.
- method for consolidating + centrally managing routing between VPC's with hub and
spoke network architecture
Amazon SQS - Answers -- decouple work across systems (intermediary step)
- standard (delivered at least once = more than once) + FIFO (300 transactions per
second).
- 1 min - 14 days, default retention 4 days. Once retention reached will be automatically
deleted
- cannot set priority to individual items in queues
SQS Polling (long vs short) - Answers -- how you query SQS for messages/work
(default short)
- Long = only return from queue if message is there
- Short = return immediate with either message or empty
- determined by ReceiveMessageWaitTimeSeconds
- every time you poll the queue = incur charge
SNS ( simple notification service) - Answers -- push based message service to create
custom messages to subscribers who wish to be informed about certain topic
- send alarms or alerts
- topics ( fan out message to large # subscribers endpoints for parallel processing) such
as queus, lambdas, endpoints
Neptune - Answers -- graph db service for highly connected datasets
- highly available with read-replicas, continuous backup to S3
DynamoDB Streams - Answers -- flow of info about changes to items in DB table
(captures modifications to data items in the table)
- integrated with Lambda to create triggers
DynamoDB Global Tables - Answers -- multi region replication solution for fast local
performance of globally distributed apps. (replicate table across choice of regions).
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