29. What is Amazon S3?
S3 is short for Simple Storage Service, and Amazon S3 is the most supported storage platform available. S3 is object storage that can store and retrieve any amount of data from anywhere. Despite that versatility, it is practically unlimited as well as cost-effective because it is storage available on demand. In addition to these benefits, it offers unprecedented levels of durability and availability. Amazon S3 helps to manage data for cost optimization, access control, and compliance.
30. How can you recover/login to an EC2 instance for which you have lost the key?
Follow the steps provided below to recover an EC2 instance if you have lost the key:
- Verify that the EC2Config service is running
- Detach the root volume for the instance
- Attach the volume to a temporary instance
- Modify the configuration file
- Restart the original instance
31. What are some critical differences between AWS S3 and EBS?
Here are some differences between AWS S3 and EBS
42. When Would You Prefer Provisioned IOPS over Standard Rds Storage?
You would use Provisioned IOPS when you have batch-oriented workloads. Provisioned IOPS delivers high IO rates, but it is also expensive. However, batch processing workloads do not require manual intervention.
43. How Do Amazon Rds, Dynamodb, and Redshift Differ from Each Other?
Amazon RDS is a database management service for relational databases. It manages patching, upgrading, and data backups automatically. It’s a database management service for structured data only. On the other hand, DynamoDB is a NoSQL database service for dealing with unstructured data. Redshift is a data warehouse product used in data analysis.
44. What Are the Benefits of AWS’s Disaster Recovery?
Businesses use cloud computing in part to enable faster disaster recovery of critical IT systems without the cost of a second physical site. The AWS cloud supports many popular disaster recovery architectures ranging from small customer workload data center failures to environments that enable rapid failover at scale. With data centers all over the world, AWS provides a set of cloud-based disaster recovery services that enable rapid recovery of your IT infrastructure and data.
45. How can you add an existing instance to a new Auto Scaling group?
Here’s how you can add an existing instance to a new Auto Scaling group:
- Open EC2 console
- Select your instance under Instances
- Choose Actions -> Instance Settings -> Attach to Auto Scaling Group
- Select a new Auto Scaling group
- Attach this group to the Instance
- Edit the Instance if needed
- Once done, you can successfully add the instance to a new Auto Scaling group
46. What are the factors to consider while migrating to Amazon Web Services?
Here are the factors to consider during AWS migration:
- Operational Costs – These include the cost of infrastructure, ability to match demand and supply, transparency, and others.
- Workforce Productivity
- Cost avoidance
- Operational resilience
- Business agility
47. What is RTO and RPO in AWS?
RTO or Recovery Time Objective is the maximum time your business or organization is willing to wait for a recovery to complete in the wake of an outage. On the other hand, RPO or Recovery Point Objective is the maximum amount of data loss your company is willing to accept as measured in time.
48. If you would like to transfer vast amounts of data, which is the best option among Snowball, Snowball Edge, and Snowmobile?
AWS Snowball is basically a data transport solution for moving high volumes of data into and out of a specified AWS region. On the other hand, AWS Snowball Edge adds additional computing functions apart from providing a data transport solution. The snowmobile is an exabyte-scale migration service that allows you to transfer data up to 100 PB.
49. Explain what T2 instances are?
The T2 Instances are intended to give the ability to burst to a higher performance whenever the workload demands it and also provide a moderate baseline performance to the CPU.
The T2 instances are General Purpose instance types and are low in cost as well. They are usually used wherever workloads do not consistently or often use the CPU.
50. What are the advantages of AWS IAM?
AWS IAM allows an administrator to provide multiple users and groups with granular access. Various user groups and users may require varying levels of access to the various resources that have been developed. We may assign roles to users and create roles with defined access levels using IAM.
It further gives us Federated Access, which allows us to grant applications and users access to resources without having to create IAM Roles.
51. Explain Connection Draining
Connection Draining is an AWS service that allows us to serve current requests on the servers that are either being decommissioned or updated.
By enabling this Connection Draining, we let the Load Balancer make an outgoing instance finish its existing requests for a set length of time before sending it any new requests. A departing instance will immediately go off if Connection Draining is not enabled, and all pending requests will fail.
52. What is Power User Access in AWS?
The AWS Resources owner is identical to an Administrator User. The Administrator User can build, change, delete, and inspect resources, as well as grant permissions to other AWS users.
Administrator Access without the ability to control users and permissions is provided to a Power User. A Power User Access user cannot provide permissions to other users but has the ability to modify, remove, view, and create resources.
32. How do you allow a user to gain access to a specific bucket?
You need to follow the four steps provided below to allow access. They are:
- Categorize your instances
- Define how authorized users can manage specific servers.
- Lockdown your tags
- Attach your policies to IAM users
Give Your Career The Edge
33. How can you monitor S3 cross-region replication to ensure consistency without actually checking the bucket?
Follow the flow diagram provided below to monitor S3 cross-region replication:
34. What is SnowBall?
To transfer terabytes of data outside and inside of the AWS environment, a small application called SnowBall is used.
Data transferring using SnowBall is done in the following ways:
- A job is created.
- The SnowBall application is connected.
- The data is copied into the SnowBall application.
- Data is then moved to the AWS S3.
35. What are the Storage Classes available in Amazon S3?
The Storage Classes that are available in the Amazon S3 are the following:
- Amazon S3 Glacier Instant Retrieval storage class
- Amazon S3 Glacier Flexible Retrieval (Formerly S3 Glacier) storage class
- Amazon S3 Glacier Deep Archive (S3 Glacier Deep Archive)
- S3 Outposts storage class
- Amazon S3 Standard-Infrequent Access (S3 Standard-IA)
- Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA)
- Amazon S3 Standard (S3 Standard)
- Amazon S3 Reduced Redundancy Storage
- Amazon S3 Intelligent-Tiering (S3 Intelligent-Tiering)
29. What is Amazon S3?
S3 is short for Simple Storage Service, and Amazon S3 is the most supported storage platform available. S3 is object storage that can store and retrieve any amount of data from anywhere. Despite that versatility, it is practically unlimited as well as cost-effective because it is storage available on demand. In addition to these benefits, it offers unprecedented levels of durability and availability. Amazon S3 helps to manage data for cost optimization, access control, and compliance.
30. How can you recover/login to an EC2 instance for which you have lost the key?
Follow the steps provided below to recover an EC2 instance if you have lost the key:
- Verify that the EC2Config service is running
- Detach the root volume for the instance
- Attach the volume to a temporary instance
- Modify the configuration file
- Restart the original instance
31. What are some critical differences between AWS S3 and EBS?
Here are some differences between AWS S3 and EBS
32. How do you allow a user to gain access to a specific bucket?
You need to follow the four steps provided below to allow access. They are:
- Categorize your instances
- Define how authorized users can manage specific servers.
- Lockdown your tags
- Attach your policies to IAM users
Give Your Career The Edge
33. How can you monitor S3 cross-region replication to ensure consistency without actually checking the bucket?
Follow the flow diagram provided below to monitor S3 cross-region replication:
34. What is SnowBall?
To transfer terabytes of data outside and inside of the AWS environment, a small application called SnowBall is used.
Data transferring using SnowBall is done in the following ways:
- A job is created.
- The SnowBall application is connected.
- The data is copied into the SnowBall application.
- Data is then moved to the AWS S3.
35. What are the Storage Classes available in Amazon S3?
The Storage Classes that are available in the Amazon S3 are the following:
- Amazon S3 Glacier Instant Retrieval storage class
- Amazon S3 Glacier Flexible Retrieval (Formerly S3 Glacier) storage class
- Amazon S3 Glacier Deep Archive (S3 Glacier Deep Archive)
- S3 Outposts storage class
- Amazon S3 Standard-Infrequent Access (S3 Standard-IA)
- Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA)
- Amazon S3 Standard (S3 Standard)
- Amazon S3 Reduced Redundancy Storage
- Amazon S3 Intelligent-Tiering (S3 Intelligent-Tiering)
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