Ques: 1. What is Data warehouse in AWS?
Answer:
Data ware house is a central repository for data that can come
from one or more sources. Organization typically use data warehouse to compile
reports and search the database using highly complex queries. Data warehouse
also typically updated on a batch schedule multiple times per day or per hour
compared to an OLTP (Online Transaction Processing) relational database that
can be updated thousands of times per second.
AWS RedShift Interview Questions & Answers
Ques: 2. What is NAT Instance and NAT Gateway?
Answer:
NAT instance: A network address translation (NAT) instance is an Amazon
Linux machine Image (AMI) that is designed to accept traffic from instances
within a private subnet, translate the source IP address to the Public IP
address of the NAT instance and forward the traffic to IWG.
NAT Gateway: A NAT gateway is an Amazon managed resources that is
designed to operate just like a NAT instance, but it is simpler to manage and
highly available within an availability Zone. To allow instance within a
private subnet to access internet resources through the IGW via a NAT gateway.
AWS Lambda Interview Questions & Answers
Ques: 3. What type of performance can you expect from Elastic
Block Storage? How do you back it up and enhance the performance?
Answer:
Performance of an elastic block storage varies i.e. it can go
above the SLA performance level and after that drop below it. SLA provides an
average disk I/O rate which can at times frustrate performance experts who
yearn for reliable and consistent disk throughput on a server. Virtual AWS
instances do not behave this way. One can backup EBS volumes through a graphical
user interface like elasticfox or use the snapshot facility through an API
call. Also, the performance can be improved by using Linux software raid and
striping across four volumes.
AWS Cloudwatch interview Questions & Answers
Ques: 4. How will you access the data on EBS in AWS?
Answer:
Elastic block storage as the name indicates provides persistent,
highly available and high-performance block level storage that can be attached
to a running EC2 instance. The storage can formatted and mounted as a file
system or the raw storage can be accessed directly.
AWS Cloud Support Engineer Interview Question & Answers
Ques: 5. Is it possible to vertically scale on an Amazon
Instance? If yes, how?
Answer:
Following are the steps to scale an Amazon Instance vertically –
- Spin up a larger
Amazon instance than the existing one.
- Pause the existing
instance to remove the root ebs volume from the server and
discard.
- Stop the live running
instance and detach its root volume.
- Make a note of the
unique device ID and attach that root volume to the new server.
- Start the instance again.
AWS Solution Architect Interview Questions & Answers
Ques: 6. What is the total number of buckets that can be created
in AWS by default?
Answer:
100 buckets can be created in each of the AWS accounts. If
additional buckets are required, increase the bucket limit by submitting a
service limit increase.
ActiveMQ Interview Questions & Answers
Ques: 7. How will you configure an instance with the application
and its dependencies, and make it ready to serve traffic?
Answer:
You can achieve this with the use of life cycle hooks. They
are powerful as they let you pause the creation or termination of an instance
so that you can sneak peak in and perform custom actions like configuring the
instance, downloading the required files, and any other steps that are required
to make the instance ready. Every auto scaling group can have multiple life
cycle hooks.
AWS DevOps Cloud Interview Questions & Answers
Ques: 8. What are some of the key best practices for security in
Amazon EC2?
Answer:
- Create individual IAM
(Identity and Access Management) users to control access to your AWS
recourses.
- Creating separate IAM
user provides separate credentials for every user making it possible to
assign different permissions to each user based on the access
requirements.
- Secure the AWS Root
account and its access keys.
- Harden
EC2 instances by disabling unnecessary services and applications by
installing only necessary software and tools on EC2 instances.
- Grant least privileges
by opening permissions that are required to perform a specific task and
not more than that. Additional permissions can be granted as
required.
- Define and review the
security group rules on a regular basis.
- Have a well-defined
strong password policy for all the users.
- Deploy anti-virus
software on the AWS network to protect it from Trojans, Viruses, etc.
AWS Database Interview Questions & Answers
Ques: 9. What are the important features of a classic load
balancer in EC2?
Answer:
· The high
availability feature ensures that the traffic is distributed among EC2
instances in single or multiple availability zones. This ensures high scale of
availability for incoming traffic.
· Classic
load balancer can decide whether to route the traffic or not based on the
results of health check.
· You can
implement secure load balancing within a network by creating security
groups in a VPC.
· Classic
load balancer supports sticky sessions which ensure that the traffic from a
user is always routed to the same instance for a seamless experience.
AWS Cloud Interview Questions and
Answers
Ques: 10. What happens when you reboot an EC2 instance?
Answer:
Rebooting an instance is just like rebooting a PC. You do not
return to image’s original state; however, the contents of the hard disk are
same as before the reboot.
AWS AppSync Interview Questions and
Answers
Ques: 11. What Are the main features of Amazon Cloud Front?
Answer:
Amazon Cloud Front is a web service that speeds up delivery of
your static and dynamic web content, such as .html, .css, .js, and image files,
to your users. CloudFront delivers your content through a universal network of
data centres called edge locations
AWS Cloud9 Interview Questions and
Answers
Ques: 12. Explain storage for Amazon Ec2 Instance?
Answer:
An instance store is a provisional storing type located on disks
that are physically attached to a host machine. … This article will present you
to the AWS instance store storage type, compare it to AWS Elastic Block Storage
(AWS EBS), and show you how to backup data stored on instance stores to AWS EBS
Amazon SQS is a message queue service used by scattered requests
to exchange messages through a polling model, and can be used to decouple
sending and receiving components
Amazon Athena Interview Questions and
Answers
Ques: 13. What is AWS Certificate Manager?
Answer:
AWS Certificate Manager is an administration that lets you
effortlessly arrangement, oversee, and send open and private Secure Sockets
Layer/Transport Layer Security (SSL/TLS) endorsements for use with AWS
administrations and your inward associated assets. SSL/TLS declarations are
utilized to anchor arrange interchanges and set up the character of sites over
the Internet and additionally assets on private systems. AWS Certificate
Manager expels the tedious manual procedure of obtaining, transferring, and
reestablishing SSL/TLS endorsements.
AWS Cloud Practitioner Essentials
Questions and Answers
Ques: 14. What is the AWS Key Management Service?
Answer:
AWS Key Management Service (AWS KMS) is an overseen benefit that
makes it simple for you to make and control the encryption keys used to
scramble your information. … AWS KMS is additionally coordinated with AWS
CloudTrail to give encryption key use logs to help meet your inspecting, administrative
and consistence needs.
AWS EC2 Interview Questions and Answers
Ques: 15. What is Amazon EMR?
Answer:
Amazon Elastic MapReduce (EMR) is one such administration that
gives completely oversaw facilitated Hadoop system over Amazon Elastic Compute
Cloud (EC2).
AWS Simple Storage Service (S3)
Interview Questions and Answers
Ques: 16. What is Amazon Kinesis Firehose?
Answer:
Amazon Kinesis Data Firehose is the least demanding approach to
dependably stack gushing information into information stores and examination
devices. … It is a completely overseen benefit that consequently scales to
coordinate the throughput of your information and requires no continuous
organization.
AWS Fargate Interview Questions and
Answers
Ques: 17. What Is Amazon CloudSearch and its highlights?
Answer:
Amazon CloudSearch is a versatile cloud-based hunt benefit that
frames some portion of Amazon Web Services (AWS). CloudSearch is normally used
to incorporate tweaked seek abilities into different applications. As indicated
by Amazon, engineers can set a pursuit application up and send it completely in
under 60 minutes.
AWS SageMaker Interview Questions and
Answers
Ques: 18. What is the Difference between the Service Role and SAML
Federated Role?
Answer:
Service Role are meant for usage of AWS Services and based upon
the policies attached to it, it will have the scope to do its task. Example :
In case of automation we can create a service role and attached to it.
Federated Roles are meant for User Access and getting access to
AWS as per designed role. Example: We can have a federated role created for our
office employee and corresponding to that a Group will be created in the AD and
user will be added to it.
AWS DynamoDB Interview Questions and
Answers
Ques: 19. Distinguish between Scalability and Flexibility?
Answer:
Cloud computing offers industries flexibility and scalability when
it comes to computing needs:
Flexibility. Cloud computing agrees your workers to be more
flexible – both in and out of the workplace. Workers can access files using
web-enabled devices such as smartphones, laptops and notebooks. In this way,
cloud computing empowers the use of mobile technology.
One of the key assistances of using cloud computing is its
scalability. Cloud computing allows your business to easily expensive or
downscale your IT requests as and when required. For example, most cloud
service workers will allow you to increase your existing resources to
accommodate increased business needs or changes. This will allow you to support
your commercial growth without exclusive changes to your present IT systems.
AWS Elastic Block Store (EBS) Interview
Questions and Answers
Ques: 20 What is SES, SQS and SNS?
Answer:
SES (Simple Email Service): SES is SMTP server provided by Amazon
which is designed to send bulk mails to customers in a quick and cost-effective
manner.SES does not allows to configure mail server.
SQS (Simple Queue Service): SQS is a fast, reliable and scalable,
fully managed message queuing service. Amazon SQS makes it simple and cost
Effective. It’s temporary repository for messages to waiting for processing and
acts as a buffer between the component producer and the consumer.
SNS (Simple Notification Service): SNS is a web service that
coordinates and manages the delivery or sending of messages to recipients.
More AWS Interview Questions and Answers:
AWS Amplify Interview Questions and
Answers
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and Answers
AWS Django Interview Questions and
Answers
AWS Glue Interview Questions and Answers
AWS VPC Interview Questions and Answers
AWS Aurora Interview Questions and Answers
AWS CloudFormation Interview Questions
and Answers
AWS GuardDuty Questions and Answers
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