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AWS Interview Questions
This AWS service helps to protect VPCs (Virtual Private Cloud) against attacks. In this service, scaling is carried out automatically as per the traffic flow in the network. You can define your firewall rules using Network Firewall's flexible rules engine; therefore, you can get reasonable control over the network traffic. Network Firewall can work alongside AWS firewall manager to build and apply security policies on all VPCs and accounts.
* AWS Snowcone
* AWS Snowball
* AWS Snowmobile
Throughput optimized HDDs are magnetic type storage that defines performance based on throughput. It is suitable for frequently accessed, large and sequential workloads.
 
Cold HDD volumes are also magnetic-type storages where performance is calculated based on throughput. These storages are inexpensive and best suitable for infrequent sequential and large cold workloads.
AWS Copilot CLI is known as ‘Copilot Command-Line Interface’, which helps users deploy and manage containerized applications. Here, each step in the deployment lifecycle is automated; the steps include pushing to a registry, creating a task definition, and clustering. Therefore, it saves time for planning the necessary infrastructure to run applications.
Generally, AWS Elastic Disaster Recovery is built on Cloud Endure Disaster Recovery; therefore, both services have similar capabilities. They help you to:
 
* Ease the setup, operation, and recovery processes for many applications
* Perform non-disruptive disaster recovery testing and drills
* Recover RPOs in seconds and TROs in minutes
* Recover from a previous point-in-time
Amazon cloud search features :
 
* AutoComplete advice
* Boolean Searches
* Entire text search
* Faceting term boosting
* Highlighting
* Prefix Searches
* Range searches
To update AMI tools at the Boot-Time on Linux, you will have to do the following :
 
* # Update to Amazon EC2 AMI tools
* echo ” + Updating EC2 AMI tools”
* yum update -y aws-amitools-ec2
* echo ” + Updated EC2 AMI tools”
Currently you can create 200 subnets per VPC.
VPC flow logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC. Flow logs data can be published to either Amazon CloudWatch Logs or Amazon S3. You can monitor your VPC flow logs to gain operational visibility about your network dependencies and traffic patterns, detect anomalies and prevent data leakage, or troubleshoot network connectivity and configuration issues. The enriched metadata in flow logs help you gain additional insights about who initiated your TCP connections, and the actual packet-level source and destination for traffic flowing through intermediate layers such as the NAT Gateway. You can also archive your flow logs to meet compliance requirements.