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Definition
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| ELB free resource ? (True or False) |
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Definition
| True, it is free to use but you are charged for any utilization |
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Definition
| Smallest Reserved Capacity offering is 100 capacity units (reads or writes) |
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Definition
| no long term commitment, black friday, etc |
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Definition
| dedicated resources for you to consume, no other organization or if individual person can buy the EC2 instance |
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Definition
| most commercially feasible |
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Definition
| your instance up to 10 tags. |
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Definition
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Definition
| IOPS (input or output storage measurement.) |
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| micro, general purpose free tier |
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Definition
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| Amazon EBS 1 EBS on 1 EC2 instance, same EBS instance cannot be shared across instances. True or False? |
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Definition
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Term
| General Purpose SSD (GP2) |
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Definition
| 99.999% availability, 3IOPS/gb upto 10,000 IOPS |
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Term
| Provisioned IOPS SSD (IO1) |
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Definition
| I/O intensive applications for greater than 10,000 IOPS |
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Definition
| old, lowest cost, data accessed infrequently |
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Definition
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Definition
| process which checks for connection req. to your load balancer. |
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Definition
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Term
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Definition
| By default, NEW Users created have NO permissions to do anything. |
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Term
| What's the answer for increasing dynamo db read units? |
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Definition
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Term
| what header to use to enable server-side encryption during an S3 upload |
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Definition
The following REST upload APIs accept the x-amz-server-side-encryption request header.
PUT Object
PUT Object - Copy
POST Object
Initiate Multipart Upload |
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Term
| Request Rate and Performance Considerations & Best way to name your keys ? |
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Definition
| Hashed prefix of three or four characters should be sufficient. We strongly recommend using a hexadecimal hash as the prefix. |
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Term
| Can more than one SSL certificate be terminated in an ELB? |
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Definition
| It appears that you can only associate a single SSL certificate for an ELB, although that certificate can use Subject Alternative Names (SANs). |
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Term
| You can have multiple SSL certificates on an Elastic Load Balancer to accommodate hosting multiple sites (T/F) ? |
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Definition
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Term
| Amazon RDS/ ELB supports SOAP through HTTPS |
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Definition
| True? Check AWS RDS faqs. |
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Term
| What is the name of licensing model, in which I can see your existing oracle Database Licenses to run oracle deployments on Amazon RDS? |
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Definition
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Term
| If you want to resize the Amazon RDS DB instance now without waiting for the maintenance window? |
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Definition
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Term
| Does Route53 support NS records? |
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Definition
| Yes, it supports Name server records |
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Term
| When using consolidated billing there are two account types? |
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Definition
| Paying Account and Linked Account |
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Term
| In Amazon RDS which uses SQL server engine, what is the maximum size for a Microsoft SQL server DB instance with SQL server express edition? |
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Definition
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Term
| Attaching 'ENI' to an instance, what does 'warm attach' means? |
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Definition
| Attaching ENI , to an instance when it is stopped |
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Term
| If I scale the DB instance in mid of a billing cycle, how will I charged? |
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Definition
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Term
| Maximum backup retention period? |
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Definition
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Term
| Will I be alerted when automatic failover occurs? |
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Definition
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Term
| If you are unable to SSH to your EC2 instance, which is correct to restore connectivity ? |
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Definition
| Adjust instance security group to permit ingress (incoming) traffic over port 22 from your IP. |
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Term
| Even distribution of traffic to EC2 in multiple AZ registered with a load balancer? |
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Definition
| ELB cross zone load balancing |
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Term
| Increase write throughput of EBS? |
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Definition
| Use array of EBS volumes, increase size of EC2 instance |
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Term
| Services implemented in multiple AZ for high availability solutions? |
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Definition
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Term
| Most cost effective EC2 instance? |
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Definition
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Term
| Technique used to integrate IAM with on-premise LDAP? |
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Definition
| SAML, to enable SSO between them. |
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Term
| Characteristics of VPC subnets? |
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Definition
| Each subnet maps to single AZ, By default all subnets can route between each other whether public or private. |
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Term
| If the ELB's health check on EC2 fails then? |
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Definition
| ELB stop sending traffic to that instance |
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Term
| Where exactly to change the 'Instance Type' of your running instance? |
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Definition
| Auto scaling launch configuration |
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Term
| EC2 running instance without IAM, how can you attach IAM later ? |
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Definition
| Create image of the instance, use the image to launch a new instance with desired IAM role. |
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Term
| How do you enable max long polling? |
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Definition
| Set the imaging queue ReceiveMessageWaitTimeSeconds attribute to 20 seconds |
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Term
| A parallel scan can be the right choice if the following conditions are met: |
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Definition
Check on AWS Amazon faqs:
The table size is 20 GB or larger.
The table's provisioned read throughput is not being fully utilized.
Sequential Scan operations are too slow. |
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Term
| Instead of using a large Scan operation, use? |
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Definition
| Reduce Page Size, Isolate Scan Operations |
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Term
| Scan (Not Query) provisioned throughput? |
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Definition
| Scan uses eventually consistent reads by default and instead if you use strongly consistent reads, the Scan operation would consume twice as much provisioned throughput. |
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Term
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Definition
SNS - Push
SQS - Polls or Pulls |
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Term
| SNS Messages can be customized for each protocol? |
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Definition
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Term
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Definition
| "Deleting an entire table is significantly more efficient than removing items one-by-one, which essentially doubles the write throughput as you do as many delete operations as put operations." |
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Term
| By default which read is set in DynamoDB? |
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Definition
| Strong (can be changed to eventual for better throughput) |
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Term
| Which of these are elements in an Amazon Simple Workflow Service (SWF) workflow? |
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Definition
| Decider, Activity Worker and Workflow starter |
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Term
| Human interaction - SWF ? |
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Definition
| Task assigned is never duplicated. Keeps track of all tasks. |
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Term
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Definition
| Handle duplicate msg, NOT track your msg's. |
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Term
| How do I update and query data items with Amazon DynamoDB? |
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Definition
| After you have created a table using the AWS Management Console or CreateTable API, you can use the PutItem or BatchWriteItem APIs to insert items. Then you can use the GetItem, BatchGetItem, or, if composite primary keys are enabled and in use in your table, the Query API to retrieve the item(s) you added to the table. |
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Term
| Are expressions supported for key conditions? |
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Definition
| Yes, you can specify an expression as part of the Query API call to filter results based on values of primary keys on a table using the KeyConditionExpression parameter. |
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Term
| Does DynamoDB support complex relational queries (e.g. joins) or complex transactions? |
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Definition
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Term
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Definition
Amazon SimpleDB has a strict storage limitation of 10 GB and is limited in the request capacity it can achieve (typically under 25 writes/second); it is up to you to manage the partitioning and re-partitioning of your data.
Scaling limitations. |
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Term
| When should I use Amazon DynamoDB vs Amazon S3? |
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Definition
| DynamoDB is not structured and S3 is unstructured write items on DynamoDB from 1 byte to 400KB and S3 write objects upto 5TB. |
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Term
| Is there a limit to how much throughput I can get out of a single table? |
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Definition
| No, you can increase the throughput you have provisioned for your table using UpdateTable API or in the AWS Management Console (there is NO theoretical limit) |
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Term
| How highly available is Amazon DynamoDB? |
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Definition
The service replicates data across THREE facilities in an AWS Region to provide fault tolerance in the event of a server failure or Availability Zone outage.
This Achieves high uptime and durability. |
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Term
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Definition
| Fine Grained Access Control (FGAC) gives a DynamoDB table owner a high degree of control over data in the table |
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Term
| Can I use Fine Grain Access Control with JSON documents? |
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Definition
| YES, based on top-level attributes in your document not nested e.g list, array, etc |
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Term
| How do I create an appropriate policy? |
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Definition
| DynamoDB Policy Generator from the DynamoDB console |
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Term
| I wish to perform security analysis or operational troubleshooting on my DynamoDB tables. Can I get a history of all DynamoDB API calls made on my account? |
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Definition
| Yes. AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you. |
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Term
| How can I set up single master cross-region replication for a table? |
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Definition
| You can create cross-region replicas using the DynamoDB Cross-region Replication library. |
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Term
| Can I have multiple replicas for a single master table? |
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Definition
| Yes, there are no limits on the number of replicas tables from a single master table. |
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Term
| Does the Amazon EC2 instance Auto Scale as the size and throughput of the master and replica tables change? |
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Definition
| NO, we do not auto scale the EC2 instance. You will need to pick the instance size when configuring DynamoDB Cross-region Replication. |
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Term
| What happens if the Amazon EC2 instance managing the replication fails? |
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Definition
| The Amazon EC2 instance runs behind an auto scaling group, monitored by KCL (kenesis client library), which check the checkpoint and brings up the instance from failure. |
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Term
| Can I keep using my DynamoDB table while a Read Replica is being created? |
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Definition
| YES, the bootstrapping uses scan operation, so make sure table is provisioned with sufficient read capacity units. |
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Term
| How long does it take to create a replica? |
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Definition
| Depends on provisioned capacity and size of amazon EC2 instance. |
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Term
| Will my replica tables have the same indexes as the master table? |
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Definition
| NO, you have to create from console. |
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Term
| Can I have a replica in the same region as the master table? |
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Definition
| Yes, as long as the replica table and the master table have different names, both tables can exist in the same region. |
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Term
| Can I delete a replica group after it is created? |
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Definition
| Yes, deleting the replication group will delete the EC2 instance for the group. However, you will have to delete the DynamoDB metadata table. |
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Term
| Can I cancel a Reserved Capacity purchase? |
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Definition
| No, you cannot cancel your Reserved Capacity and the one-time payment is not refundable. You will continue to pay for every hour during your Reserved Capacity term regardless of your usage |
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Term
| Can I move Reserved Capacity from one Region to another? |
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Definition
| No. Reserved Capacity is associated with a single Region. |
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Term
| When you create new subnets within a custom VPC, by default they can communicate with each other, across availability zones ? |
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Definition
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Term
| If you make an AMI public, this AMI is immediately available across all regions, by default? |
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Definition
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Term
| You are required to patch OS and Applications in RDS? |
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Definition
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Term
| When you first create an S3 bucket, this bucket is publicly accessible by default. |
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Definition
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Term
| How many VPC's am I allowed in each AWS Region by default? |
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Definition
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Term
| What is duration based stickiness with an ELB? |
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Definition
| When the load balancer receives a request, it first checks to see if this cookie is present in the request. If so, the request is sent to the instance specified in the cookie. If there is no cookie, the load balancer chooses an instance based on the existing load balancing algorithm. A cookie is inserted into the response for binding subsequent requests from the same user to that instance. The stickiness policy configuration defines a cookie expiration, which establishes the duration of validity for each cookie. After a cookie expires, the session is no longer sticky. |
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Term
| How can I control access to my data stored on Amazon S3? |
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Definition
| Identity and Access Management (IAM) policies, bucket policies, Access Control Lists (ACLs) and query string authentication |
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Term
| How can I control access to my data stored on Amazon S3? |
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Definition
| Identity and Access Management (IAM) policies, bucket policies, Access Control Lists (ACLs) and query string authentication. |
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Term
| What is S3 Standard - Infrequent Access? |
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Definition
| Amazon S3 storage class for data that is accessed less frequently, but requires rapid access when needed. High durability, throughput, and low latency of Amazon S3 Standard |
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Term
| Is there a minimum object size for Standard - IA? |
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Definition
| Designed for larger objects and has a minimum object size of 128KB |
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Term
| Can I use Amazon Glacier APIs to access objects that I’ve archived to Amazon Glacier? |
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Definition
| Amazon S3 objects that are stored using the Amazon Glacier option are only accessible through the Amazon S3 APIs. |
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Term
| How can I retrieve my objects that are archived in Amazon Glacier? |
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Definition
| Retrieval request creates a temporary copy of your data in RRS while leaving the archived data intact in Amazon Glacier. |
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