AWS

Global Infrastructure 4 questions

#1
Explain the following
- Availability zone
  - Region
  - Edge location
#2
True or False? Each AWS region is designed to be completely isolated from the other AWS regions
#3
True or False? Each region has a minimum number of 1 availability zones and the maximum is 4
#4
What considerations to take when choosing an AWS region for running a new application?

IAM 18 questions

#5
What is IAM? What are some of its features?
#6
True or False? IAM configuration is defined globally and not per region
#7
True or False? When creating an AWS account, root account is created by default. This is the recommended account to use and share in your organization
#8
True or False? Groups in AWS IAM, can contain only users and not other groups
#9
True or False? Users in AWS IAM, can belong only to a single group
#10
What are some best practices regarding IAM in AWS?
#11
What permissions does a new user have?
#12
True or False? If a user in AWS is using password for authenticating, he doesn't needs to enable MFA
#13
What ways are there to access AWS?
#14
What are Roles?
#15
What are Policies?
#16
A user is unable to access an s3 bucket. What might be the problem?
#17
What should you use to:
- Grant access between two services/resources?
  - Grant user access to resources/services?
#18
What statements AWS IAM policies are consist of?

#19

Explain the following policy:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect:": "Allow",
            "Action": "*",
            "Resources": "*"
        }
    ]
}

#20
What security tools AWS IAM provides?
#21
Which tool would you use to optimize user permissions by identifying which services he doesn't regularly (or at all) access?
#22
What type of IAM object would you use to allow inter-service communication?

EC2 89 questions

#23
What is EC2?
#24
True or False? EC2 is a regional service
#25
What are some of the properties/configuration options of EC2 instances that can be set or modified?
#26
What would you use for customizing EC2 instances? As in software installation, OS configuration, etc.
#27
What is AMI?
#28
What are the different sources for AMIs?
#29
True or False? AMI are built for specific region
#30
Describe in high-level the process of creating AMIs
#31
What is an instance type?
#32
Explain the instance type naming convention
#33
True or False? The following are instance types available for a user in AWS:
- Compute optimized
  - Network optimized
  - Web optimized
#34
Explain each of the following instance types:
- "Compute Optimized"
  - "Memory Optimized"
  - "Storage Optimized"
#35
What can you attach to an EC2 instance in order to store data?
#36
Explain Amazon EBS
#37
What happens to EBS volumes when the instance is terminated?
#38
What happens to the EC2 disk (EBS) when the instance is stopped?
#39
True or False? EBS volumes are locked to a specific availability zone
#40
Explain EBS Snapshots
#41
What are the use cases for using EBS snapshots?
#42
Is it possible to attach the same EBS volume to multiple EC2 instances?
#43
True or False? EBS is a network drive hence, it requires network connectivity
#44
What EBS volume types are there?
#45
If you need an EBS volume for low latency workloads, which volume type would you use?
#46
If you need an EBS volume for workloads that require good performance but the cost is also an important aspect for you, which volume type would you use?
#47
If you need an EBS volume for high-throughput, which volume type would you use?
#48
If you need an EBS volume for infrequently data access, which volume type would you use?
#49
Which EBS volume types can be used as boot volumes for EC2 instances?
#50
True or False? In EBS gp2 volume type, IP will increase if the disk size increases
#51
If you would like to have an hardware disk attached to your EC2 instead of a network one (EBS). What would you use?
#52
Explain EC2 Instance Store. Why would someone choose to use it over other options?
#53
Are there any disadvantages in using instance store over EBS?
#54
What is Amazon EFS?
#55
True or False? EFS is locked into a single availability zone
#56
What are some use cases for using EFS?
#57
True or False? EFS only compatible with Linux based AMI
#58
True or False? EFS requires the user to perform capacity planning as it doesn't scales automatically
#59
What EFS modes are there?
#60
Which EFS mode would you use if you need to perform media processing?
#61
What is the default EFS mode?
#62
What EFS storage tiers are there?
#63
What EC2 pricing models are there?
#64
True or False? Reserved instance has to be used for a minimum of 1 year
#65
Explain the following types of reserved instances:
- Convertible Reserved Instances
  - Scheduled Reserved Instances
#66
True or False? In EC2 On Demand, you pay per hour when using Linux or Windows and per second (after first minute) when using any other operating system
#67
You need an instance for short-term and the workload running on instance must not be interrupted. Which pricing model would you use?
#68
You need an instance for running an application for a period of 2 years continuously, without changing instance type. Which pricing model would you use?
#69
Which pricing model has potentially the biggest discount and what its advantage
#70
You need an instance for two years, but only between 10:00-15:00 every day. Which pricing model would you use?
#71
You need an instance for running workloads. You don't care if they fail for a given moment as long as they run eventually. Which pricing model would you use?
#72
You need a physical server only for your use. Which pricing model are you going to use?
#73
What are some of the differences between dedicated hosts and dedicated instances?
#74
For what use cases, EC2 dedicated hosts are useful for?
#75
What are Security Groups?
#76
True or False? Security groups only contain deny rules
#77
True or False? One security group can be attached to multiple instances
#78
True or False? Security groups are not locked down to a region and VPC (meaning you don't have to create a new one when switching regions)
#79
True or False? By default, when using security groups, all inbound traffic to an EC2 instance is blocked and all outbound traffic is allowed
#80
What is the advantage of referencing security groups from a given security group?
#81
How to migrate an instance to another availability zone?
#82
What can you attach to an EC2 instance in order to store data?
#83
What EC2 reserved instance types are there?
#84
For how long can reserved instances be reserved?
#85
What allows you to control inbound and outbound instance traffic?
#86
What bootstrapping means and how to use it in AWS EC2?
#87
You get time out when trying reach your application which runs on an EC2 instance. Specify one reason why it would possibly happen
#88
What is the AWS Instance Connect?
#89
You try to run EC2 commands in an EC2 instance you've just created but it fails due to missing credentials. What would you do?
#90
True or False? Cancelling a Spot instance request terminates the instance
#91
What are Spot Fleets?
#92
What strategies are there to allocate Spot instances?
#93
From networking perspective, what do you get by default when running an EC2 instance?
#94
Explain EC2 hibernate
#95
True or False? Using EC2 hibernate option results in having faster instance boot
#96
What are some use cases for using EC2 hibernate option?
#97
What are some limitations of EC2 hibernate option?
#98
Explain what is EC2 Nitro
#99
What CPU customization is available with EC2?
#100
Explain EC2 Capacity Reservations
#101
What is a launch template?
#102
What is the difference between Launch Configuration and Launch Template?
#103
Explain Elastic Network Interfaces (ENI)
#104
Name at least three attributes the Elastic Network Interfaces (ENI) can include
#105
True or False? ENI are not bound to a specific availability zone
#106
True or False? ENI can be created independently of EC2 instances
#107
What are "Placement Groups"?
#108
What Placement Groups strategies are there?
#109
For each of the following scenarios choose a placement group strategy:
- High availability is top priority
  - Low latency between instances
  - Instances must be isolated from each other
  - Big Data applications that are partition aware
  - Big Data process that needs to end quickly
#110
What are the cons and pros of the "Cluster" placement group strategy?
#111
What are the cons and pros of the "Spread" placement group strategy?

VPC 26 questions

#112
What is VPC?
#113
True or False? VPC spans multiple regions
#114
True or False? It's possible to have multiple VPCs in one region
#115
True or False? Subnets belong to the same VPC, can be in different availability zones
#116
You have noticed your VPC's subnets (which use x.x.x.x/20 CIDR) have 4096 available IP addresses although this CIDR should have 4096 addresses. What is the reason for that?
#117
What AWS uses the 5 reserved IP addresses for?
#118
What is an Internet Gateway?
#119
True or False? One or more VPCs can be attached to one Internet Gateway
#120
True or False? NACL allow or deny traffic on the subnet level
#121
What is VPC peering?
#122
True or False? Multiple Internet Gateways can be attached to one VPC
#123
You've restarted your EC2 instance and the public IP has changed. How would you deal with it so it won't happen?
#124
When creating a new VPC, there is an option called "Tenancy". What is it used for?
#125
What is an Elastic IP address?
#126
Why would you use an Elastic IP address?
#127
True or False? When stopping and starting an EC2 instance, its public IP changes
#128
What are the best practices around Elastic IP?
#129
True or False? An Elastic IP is free, as long it's not associated with an EC2 instance
#130
True or False? Route Tables used to allow or deny traffic from the internet to AWS instances
#131
Explain Security Groups and Network ACLs
#132
What is AWS Direct Connect?
#133
What would you use if you need a fixed public IP for your EC2 instance?
#134
Kratos, your colleague, decided to use a subnet of /27 because he needs 29 IP addresses for EC2 instances. Is Kratos right?
#135
True or False? By default, any new account has a default VPC
#136
True or False? Default VPC doesn't have internet connectivity and any launched EC2 will only have a private IP assigned
#137
Which of the following is included with default VPC?
- Internet gateway connected to the default VPC
- A route to main route table that points all traffic to internet gateway
- Default public subnet
- Default /16 IPv4 CIDR block

Lambda 7 questions

#138
Explain what is AWS Lambda
#139
True or False? In AWS Lambda, you are charged as long as a function exists, regardless of whether it's running or not
#140
Which of the following set of languages Lambda supports?
- R, Swift, Rust, Kotlin
- Python, Ruby, Go, Kotlin, Bash
- Python, Ruby, PHP, PowerShell, C#, Perl
- Python, Ruby, Go, Node.js, Groovy, C++
- Python, Ruby, Go, Node.js, PowerShell, C#
#141
True or False? Basic lambda permissions allow you only to upload logs to Amazon CloudWatch Logs
#142
What's one of the issues with the current architecture?
#143
Specify one or more use cases for using AWS Lambda
#144
You run an architecture where you have a Lambda function that uploads images to S3 bucket and stores information on the images in DynamoDB. You would like to expose the function to users so they can invoke it. Your friend Carlos suggests you expose the credentials to the Lambda function. What's your take on that?

Containers 9 questions

#145
What is Amazon ECS?
#146
What one should do in order to make EC2 instance part of an ECS cluster?
#147
What ECS launch types are there?
#148
What is Amazon ECR?
#149
What the role "EC2 Instance Profile" is used for in regards to ECS?
#150
How to share data between containers (some from ECS and some from Fargate)?
#151
What is AWS Fargate?
#152
How AWS Fargate different from AWS ECS?
#153
True or False? Fargate creates an ENI for every task it runs

S3 32 questions

#154
Explain what is AWS S3?
#155
What is a bucket?
#156
True or False? Buckets are defined globally
#157
True or False? A bucket name must be globally unique
#158
How to rename a bucket in S3?
#159
True or False? The max object size a user can upload in one go, is 5TB
#160
Explain "Multi-part upload"
#161
Explain "Object Versioning"
#162
Explain the following:
- Object Lifecycles
  - Object Sharing
#163
Explain Object Durability and Object Availability
#164
True or False? Every new S3 bucket is public by default
#165
What's a presigned URL?
#166
What security measures have you taken in context of S3?
#167
What encryption types supported by S3?
#168
Describe shortly how SSE-S3 (AES) encryption works
#169
True or False? In case of SSE-S3 (AES-256) encryption, you manage the key
#170
Who or what manages the keys in the case of SSE-KMS encryption?
#171
Why would someone choose to use SSE-KMS instead of SSE-S3?
#172
True or False? In case of SSE-C encryption, both S3 and you manage the keys
#173
True or False? In case of SSE-C HTTPS must be used and encryption key must be provided in headers for every HTTP request
#174
Describe shortly how SSE-C encryption works
#175
With which string an header starts?
- x-zmz
- x-amz
- x-ama
#176
What is a storage class? What storage classes are there?
#177
A customer would like to move data which is rarely accessed from standard storage class to the most cheapest class there is. Which storage class should be used?
- One Zone-IA
  - Glacier Deep Archive
  - Intelligent-Tiering
#178
What Glacier retrieval options are available for the user?
#179
True or False? Each AWS account can store up to 500 PetaByte of data. Any additional storage will cost double
#180
Explain what is Storage Gateway
#181
Explain the following Storage Gateway deployments types
- File Gateway
  - Volume Gateway
  - Tape Gateway
#182
What is the difference between stored volumes and cached volumes?
#183
What is "Amazon S3 Transfer Acceleration"?
#184
Explain data consistency
#185
Can you host dynamic websites on S3? What about static websites?

Disaster Recovery 3 questions

#186
In regards to disaster recovery, what is RTO and RPO?
#187
What types of disaster recovery techniques AWS supports?
#188
Which disaster recovery option has the highest downtime and which has the lowest?

CloudFront 6 questions

#189
Explain what is CloudFront
#190
Explain the following
- Origin
  - Edge location
  - Distribution
#191
What delivery methods available for the user with CDN?
#192
True or False?. Objects are cached for the life of TTL
#193
What is AWS Snowball?
#194
How can a company ensure their web application continues to operate if it becomes unavailable in its current single region?

ELB 30 questions

#195
What is ELB (Elastic Load Balancing)?
#196
True or False? Elastic Load Balancer is a managed resource (= AWS takes care of it)
#197
What types of AWS load balancers are there?
#198
What's a "listener" in regards to ELB?
#199
What's a "target group" in regards to ELB?
#200
Which load balancer would you use for services which use HTTP or HTTPS traffic?
#201
What are some use cases for using Gateway Load Balancer?
#202
Explain "health checks" in the context of AWS ELB
#203
True or False? AWS ELB health checks are done on a port and a route
#204
What types of load balancers are supported in EC2 and what are they used for?
#205
Which type of AWS load balancer is used in the following drawing?
#206
What are possible target groups for ALB (Application Load Balancer)?
#207
True or False? ALB can route only to a single route group
#208
If you wanted to analyze network traffic, you would use the ____ load balancer
#209
Who has better latency? Application Load Balancer or Network Load Balancer?
#210
True or False? Network load balancer has one static IP per availability zone
#211
What are the supported target groups for network load balancer?
#212
What are the supported target groups for gateway load balancer?
#213
Name one use case for using application load balancer as a target group for network load balancer
#214
What are some use cases for using Network Load Balancer?
#215
True or False? Network load balancers operate in layer 4
#216
True or False? It's possible to enable sticky session for network load balancer so the same client is always redirected to the same instance
#217
Explain Cross Zone Load Balancing
#218
True or False? For network load balancer, cross zone load balancing is always on and can't be disabled
#219
True or False? In regards to cross zone load balancing, AWS charges you for inter AZ data in network load balancer but no in application load balancer
#220
True or False? Both ALB and NLB support multiple listeners with multiple SSL certificates
#221
Explain Deregistration Delay (or Connection Draining) in regards to ELB
#222
At what network level/layer a Network Load Balancer operates?
#223
True or False? With ALB (Application Load Balancer) it's possible to do routing based on query string and/or headers
#224
True or False? For application load balancer, cross zone load balancing is always on and can't be disabled

Auto Scaling Group 12 questions

#225
Explain Auto Scaling Group
#226
You have two instance running as part of ASG. You change the desired capacity to 1. What will be the outcome of this change?
#227
How can you customize the trigger for the scaling in/out of an auto scaling group?
#228
What are some metrics/rules used for auto scaling
#229
What is dynamic Scaling policy in regards to Auto Scaling Groups?
#230
What is a predictive scaling policy in regards to Auto Scaling Groups?
#231
Explain scaling cooldowns in regards to Auto Scaling Groups
#232
Explain the default ASG termination policy
#233
True or False? by default, ASG tries to balance the number of instances across AZ
#234
Explain Lifecycle hooks in regards to Auto Scaling Groups
#235
If you use ASG and you would like to run extra steps before the instance goes in service, what will you use?
#236
Describe one way to test ASG actually works

Security 21 questions

#237
What is the shared responsibility model? What AWS is responsible for and what the user is responsible for based on the shared responsibility model?
#238
True or False? Based on the shared responsibility model, Amazon is responsible for physical CPUs and security groups on instances
#239
Explain "Shared Controls" in regards to the shared responsibility model
#240
What is the AWS compliance program?
#241
How to secure instances in AWS?
#242
What is AWS Artifact?
#243
What is AWS Inspector?
#244
What is AWS Guarduty?
#245
What is AWS Shield?
#246
What is AWS WAF? Give an example of how it can used and describe what resources or services you can use it with
#247
What AWS VPN is used for?
#248
What is the difference between Site-to-Site VPN and Client VPN?
#249
What is AWS CloudHSM?
#250
True or False? AWS Inspector can perform both network and host assessments
#251
What is AWS Key Management Service (KMS)?
#252
What is AWS Acceptable Use Policy?
#253
True or False? A user is not allowed to perform penetration testing on any of the AWS services
#254
True or False? DDoS attack is an example of allowed penetration testing activity
#255
True or False? AWS Access Key is a type of MFA device used for AWS resources protection
#256
What is Amazon Cognito?
#257
What is AWS ACM?

Databases 42 questions

#258
What is AWS RDS?
#259
Why to use AWS RDS instead of launching an EC2 instance and install a database on it?
#260
What do you know about RDS backups?
#261
Explain AWS RDS Storage Auto Scaling
#262
Explain Amazon RDS Read Replicas
#263
True or False? RDS read replicas are supported within az, cross az and cross region
#264
True or False? RDS read replicas are asynchronous
#265
True or False? Amazon RDS supports MongoDB
#266
What are some use cases for using RDS read replicas?
#267
Explain RDS Multi Availability Zone
#268
True or False? Moving AWS RDS from single AZ to multi AZ is an operation with downtime (meaning there is a need to stop the DB)
#269
How AWS RDS switches from single AZ to multi AZ?
#270
True or False? RDS encryption should be defined at launch time
#271
True or False? in regards to RDS, replicas can be encrypted even if the master isn't encrypted
#272
How to make RDS snapshots encrypted?
#273
How to encrypt an un-encrypted RDS instance?
#274
How IAM authentication works with RDS?
#275
True or False? In case of RDS (not Aurora), read replicas require you to change the SQL connection string
#276
What do you know about Amazon Aurora?
#277
True or False? Aurora stores 4 copies of your data across 2 availability zones
#278
True or False? Aurora support self healing where corrupted data replaced by doing peer-to-peer replication
#279
True or False? Aurora storage is striped across 20 volumes
#280
True or False? It's possible to scale Aurora replicas
#281
Explain Aurora Serverless. What use cases is it good for?
#282
How does Amazon Aurora keep the writer instance highly available, and how can you scale reads that need read-after-write consistency?
#283
What is AWS DynamoDB?
#284
Explain "Point-in-Time Recovery" feature in DynamoDB
#285
Explain "Global Tables" in DynamoDB
#286
What is DynamoDB Accelerator?
#287
What is AWS ElastiCache? In what use case should it be used?
#288
Describe the workflow of an application using the cache in AWS
#289
How can you make an application stateless using ElastiCache?
#290
You need a highly available cache with backup and restore features. Which one would you use?
#291
You need a cache with read replicas that can be scaled and one support multi AZ. Which one would you use?
#292
You need a cache that supports sharding and built with multi-threaded architecture in mind. Which one would you use?
#293
True or False? ElastiCache doesn't supports IAM authentication
#294
What patterns are there for loading data into the cache?
#295
What is AWS Redshift and how is it different than RDS?
#296
What do you if you suspect AWS Redshift performs slowly?
#297
What is Amazon DocumentDB?
#298
What "AWS Database Migration Service" is used for?
#299
What type of storage is used by Amazon RDS?

Identify the Service 37 questions

#300
What would you use for automating code/software deployments?
#301
You would like to invoke a function every time you enter a URL in the browser. Which service would you use for that?
#302
What would you use for easily creating similar AWS environments/resources for different customers?
#303
Using which service, can you add user sign-up, sign-in and access control to mobile and web apps?
#304
Which service would you use for building a website or web application?
#305
Which tool would you use for choosing between Reserved instances or On-Demand instances?
#306
What would you use to check how many unassociated Elastic IP address you have?
#307
Which service allows you to transfer large amounts (Petabytes) of data in and out of the AWS cloud?
#308
Which service would you use if you need a data warehouse?
#309
Which service provides a virtual network dedicated to your AWS account?
#310
What you would use for having automated backups for an application that has MySQL database layer?
#311
What would you use to migrate on-premise database to AWS?
#312
What would you use to check why certain EC2 instances were terminated?
#313
What would you use for SQL database?
#314
What would you use for NoSQL database?
#315
What would you use for adding image and video analysis to your application?
#316
Which service would you use for debugging and improving performances issues with your applications?
#317
Which service is used for sending notifications?
#318
What would you use for running SQL queries interactively on S3?
#319
What would you use for preparing and combining data for analytics or ML?
#320
Which service would you use for monitoring malicious activity and unauthorized behavior in regards to AWS accounts and workloads?
#321
Which service would you use for centrally manage billing, control access, compliance, and security across multiple AWS accounts?
#322
Which service would you use for web application protection?
#323
You would like to monitor some of your resources in the different services. Which service would you use for that?
#324
Which service would you use for performing security assessment?
#325
Which service would you use for creating DNS record?
#326
What would you use if you need a fully managed document database?
#327
Which service would you use to add access control (or sign-up, sign-in forms) to your web/mobile apps?
#328
Which service is often referred to as "used for decoupling applications"?
#329
Which service would you use if you need messaging queue?
#330
Which service would you use if you need managed DDOS protection?
#331
Which service would you use if you need store frequently used data for low latency access?
#332
What would you use to transfer files over long distances between a client and an S3 bucket?
#333
Which services are involved in getting a custom string (based on the input) when inserting a URL in the browser?
#334
Which service would you use for data or events streaming?
#335
Which (free) tool would you use to get information on cost savings?
#336
You would like to have on-perm storage access to AWS storage. What would you use for that?

DNS (Route 53) 30 questions

#337
What is Route 53?
#338
What it means that "Route 53 is an Authoritative DNS"?
#339
What each Route 53 record contains?
#340
What DNS record types does Route 53 supports?
#341
What are hosted zones?
#342
What types of hosted zones are there?
#343
What is the difference between CNAME record and an Alias record?
#344
True or False? Alias record can be set up for an EC2 DNS name
#345
True or False? Alias record can be set up for an VPC interface endpoint
#346
True or False? Alias record is only of type A or AAAA
#347
What is a routing policy in regards to AWS Route 53?
#348
What Route 53 routing policies are there?
#349
Suppose you need to route % of your traffic to a certain instance and the rest of the traffic, to another instance. Which routing policy would you choose?
#350
Suppose you need to route traffic to a single source with Route 53, without any other requirements, which routing policy would you choose?
#351
Explain the geolocation routing policy
#352
What are some use cases for using geolocation routing policy?
#353
Explain the geoproximity routing policy
#354
What are some use cases for weighted routing policy?
#355
True or False? Route 53 simple routing policy supports both single and multiple values
#356
True or False? In weighted routing DNS records must have the same name but not the same type
#357
You would like to use a routing policy that will take latency into account and will route to the resource with the lowest latency. Which routing policy would you use?
#358
What happens when you set all records to weight 0 when using Weighted routing policy?
#359
What Route 53 health checks are used for?
#360
You would like to use a routing policy based on the resource location and be able to shift more traffic to some resources. Which one would you use?
#361
Explain Route 53 Traffic Flow feature
#362
What are calculated health checks?
#363
What is one possible use case for using calculated health checks?
#364
You would like to use a routing policy based on the user location. Which one would you use?
#365
True or False? Route 53 Multi Value is a substitute for those who want cheaper solution than ELB
#366
True or False? Domain registrar and DNS service is inherently the same thing

SQS 12 questions

#367
What is Simple Queue Service (SQS)?
#368
Explain "producer" and "consumer" in regards to messaging queue
#369
What "default retention of messages" means?
#370
What's the limitation on message size in SQS?
- 128KB
- 128MB
- 1MiB
- 256MB
#371
True or False? It's possible to have duplicated messages in the queue
#372
True or False? "Consumers" can be only EC2 instances
#373
True or False? Processes/Applications use from the SDK the SendMessage API in order to send messages to the queue
#374
What it means "best effort ordering" in regards to SQS?
#375
What is "Delay Queue" in regards to SQS?
#376
What is "Visibility Timeout?"
#377
Give an example of architecture or workflow that involves SQS and EC2 & S3
#378
What's MessageGroupID?

SNS 4 questions

#379
What is Simply Notification Service?
#380
Explain the following in regards to SNS:
- Topics
  - Subscribers
  - Publishers
#381
How SNS is different from SQS?
#382
What's a Fan-Out pattern?

Monitoring and Logging 2 questions

#383
What is AWS CloudWatch?
#384
What is AWS CloudTrail?

Billing and Support 13 questions

#385
What are Service Control Policies and to what service they belong?
#386
Explain AWS pricing model
#387
How do you estimate AWS costs?
#388
What basic support in AWS includes?
#389
How are EC2 instances billed?
#390
What AWS Pricing Calculator is used for?
#391
What is Amazon Connect?
#392
What are "AWS Services Partners"?
#393
Which of the following are AWS Support plans (and are sorted by order)?
- Basic, Business Support+, Enterprise Support, Unified Operations
  - Newbie, Intermediate, Pro, Enterprise
  - Developer, Basic, Business, Enterprise
  - Beginner, Pro, Intermediate Enterprise
#394
True or False? Region is a factor when it comes to EC2 costs/pricing
#395
What is "AWS Countdown"?
#396
What is "AWS Organizations"?
#397
What's an OU in regards to AWS Organizations?'

Automation 3 questions

#398
What is AWS CodeDeploy?
#399
Explain what is CloudFormation
#400
What is AWS CDK?

Misc 23 questions

#401
Which AWS service you have experience with that you think is not very common?
#402
What is AWS CloudSearch?
#403
What is AWS Lightsail?
#404
What is AWS Rekognition?
#405
What AWS Resource Groups used for?
#406
What is AWS Global Accelerator?
#407
What is AWS Config?
#408
What is AWS X-Ray?
#409
What is AWS Snowmobile?
#410
What is AWS Athena?
#411
What is Amazon Cloud Directory?
#412
What is AWS Elastic Beanstalk?
#413
What is AWS SWF?
#414
What is AWS EMR?
#415
What is AWS Quick Starts?
#416
What is the Trusted Advisor?
#417
What is AWS Service Catalog?
#418
What is AWS CAF?
#419
What is AWS CloudShell?
#420
What is AWS Application Discovery Service?
#421
What is the AWS well-architected framework and what pillars it's based on?
#422
What AWS services are serverless (or have the option to be serverless)?
#423
What's an ARN?

High Availability 1 question

#424
What high availability means from AWS perspective?

Production Operations and Migrations 7 questions

#425
Describe in high-level how to upgrade a system on AWS with (near) zero downtime
#426
You try to use an detached EBS volume from us-east-1b in us-east-1a, but it fails. What might be the reason?
#427
When you launch EC2 instances, it takes them time to boot due to commands you run with user data. How to improve instances boot time?
#428
You try to mount EFS on your EC2 instance and it doesn't work (hangs...) What might be a possible reason?
#429
How to migrate an EBS volume across availability zones?
#430
How to encrypt an unencrypted EBS volume attached to an EC2 instance?
#431
You've created a network load balancer but it doesn't work (you can't reach your app on your EC2 instance). What might be a possible reason?

Scenarios 8 questions

#432
You have a load balancer running and behind it 5 web servers. Users complain that every time they move to a new page, they have to authenticate, instead of doing it once. How can you solve it?
#433
You have a load balancer running and behind it 5 web servers. Users complain that some times when they try to use the application it doesn't works. You've found out that sometimes some of the instances crash. How would you deal with it?
#434
You run your application on 5 EC2 instances on one AZ and on 10 EC2 instances in another AZ. You distribute traffic between all of them using a network load balancer, but it seems that instances in one AZ have higher CPU rates than the instances in the other AZ. What might be the issue and how to solve it?
#435
You are running an ALB that routes traffic using two hostnames: a.b.com and d.e.com. Is it possible to configure HTTPS for both of the hostnames?
#436
You have set up read replicas to scale reads but users complain that when they update posts in forums, the posts are not being updated. What may cause this issue?
#437
You need a persistent shared storage between your containers that some are running in Fargate and some in ECS. What would you use?
#438
You would like to run an AWS Fargate task every time a file is uploaded to a certain S3 bucket. How would you achieve that?
#439
Your hosts scale down and then back up quite often. What's your take on that?

Architecture Design 3 questions

#440
You've been asked to design an architecture for high performance and low-latency application (millions of requests per second). Which load balancer would you use?
#441
What should you use for scaling reads?
#442
You have two applications who communicate synchronously. It worked fine until there suddenly a spike of traffic. What change you might apply in this case?