Ques: 1). What are your
thoughts on the Amazon Database?
Answer:
Amazon Database is an
Amazon Web Services offering that includes managed databases, managed services,
and NoSQL. It also comes with a fully managed petabyte-scale data warehouse and
in-memory caching as a service. There are four AWS database services to choose
from, and the user can use one or all of them depending on their needs.
DynamoDB, RDS, RedShift, and ElastiCache are the Amazon database services.
AWS(Amazon
Web Services) Interview Questions and Answers
AWS Cloud
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Ques: 2). What are the
features of Amazon Database?
Answer:
Following are the
important features of Amazon Database:
- Easy to administer
- Highly scalable
- Durable and reliable
- Faster performance
- Highly available
- More secure
- Cost-effective
AWS Cloudwatch interview Questions
& Answers
AWS VPC
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Ques: 3). What is
a key-value store, and how does it work?
Answer:
A key-value store is a
database service that makes it easier to store, update, and query items that
are identified by their keys and values. These objects are made up of keys and
values that make up the actual content that is saved.
AWS Lambda Interview Questions
& Answers
AWS Aurora
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Ques:
4). What Is A Data Warehouse, And How Can Amazon Redshift Help With
Storage?
Answer:
A data warehouse can be
conceived of as a repository for data acquired and stored from the company's
systems and other sources. As a result, a data warehouse's design is
three-tiered:
The tools that clean and
collect data are found on the bottom rung.
We have tools in the
intermediate layer that use Online Analytical Processing Server to alter the
data.
We have various tools on
the top layer that execute data analysis and data mining on the front end.
Setting up and
maintaining a data warehouse costs a lot of money, especially as an
organization's data grows and its data storage servers need to be upgraded on a
regular basis. As a result, AWS RedShift was created, allowing businesses to
store their data in Amazon's cloud-based warehouses.
AWS RedShift Interview Questions
and Answers
Ques: 5). What Is The Difference Between A Leader Node And A Compute Node?
Answer:
The queries from the
client application are received in a leader node, where they are parsed and an
execution plan is created. The stages for processing these queries are created,
and the outcome is returned to the client application.
The steps allocated in
the leader node are completed in a compute node, and the data is transferred.
After that, the result is returned to the leader node before being delivered to
the client application.
AWS Cloud Support Engineer
Interview Question & Answers
Ques: 6). What Is Amazon
ElastiCache, and How Does It Work?
Answer:
Amazon ElastiCache is an
in-memory key-value store that can handle Redis and Memcached as key-value
engines. It is a fully managed and zero administration service that Amazon has
hardened. You may use Amazon ElastiCache to either create a new
high-performance application or upgrade an existing one. ElastiCache has a wide
range of applications in gaming, healthcare, and other fields.
AWS Solution Architect Interview Questions & Answers
Ques: 7). What Is Amazon
ElastiCache's Purpose?
Answer:
The caching of
information that is utilised repeatedly could increase the performance of
online applications. Using in-memory-caching, the data may be accessed very
quickly. There is no need to manage a separate caching server with ElastiCache.
An open source compatible in-memory data source with high throughput and low
latency can be readily deployed or run.
ActiveMQ Interview Questions & Answers
Ques: 8). When would I prefer Provisioned IOPS over Standard RDS storage?
Answer:
Provisioned IOPS deliver
high IO rates but on the other hand it is expensive as well. Batch processing
workloads do not require manual intervention they enable full utilization of
systems, therefore a provisioned IOPS will be preferred for batch oriented
workload.
AWS DevOps Cloud Interview
Questions & Answers
Ques: 9). What Oracle
features are available in AWS RDS?
Answer:
Oracle is a well-known
relational database that is available through Amazon RDS with enterprise
version features. Almost every Oracle functionality may be used with the RDS
platform.
If no version is
specified when the database is created, it defaults to the most recent version
available at the moment. In a Python SDK programme, here's an example of how to
access the supported DB Engine versions using the AWS API.
AWS Cloud
Practitioner Essentials Questions and Answers
Ques: 10). What are the
differences between Amazon RDS, DynamoDB, and Redshift?
Answer:
Amazon RDS is a
relational database management service that handles patching, upgrading, and data
backups for you without requiring your involvement. RDS is a database
management service that exclusively handles structured data.
On the other hand,
DynamoDB is a NoSQL database service, which works with unstructured data.
Redshift is a data
warehouse product that is utilised in data analysis and is a completely
different service.
AWS EC2
Interview Questions and Answers
Ques: 11). Can I use
Amazon RDS to operate many database instances for free?
Answer:
Yes. You can operate
many Single-AZ Micro database instances, and they're all free! Any use of more
than 750 instance hours across all Amazon RDS Single-AZ Micro DB instances,
across all qualifying database engines and locations, will be paid at normal
Amazon RDS charges. For example, if you run two Single-AZ Micro DB instances
for 400 hours each in a month, you'll have 800 instance hours total, with 750
hours being free. The remaining 50 hours will be charged at the usual Amazon
RDS rate.
AWS Cloud
Security Interview Questions and Answers
Ques: 12). What is
Oracle Licensing and how does it work?
Answer:
Oracle licenses can be
used in RDS in two ways:
Model with a License
The license for the
software you'll use is held by Amazon in this model. Also, through its support
programme, AWS provides support for both AWS and Oracle products. As a result,
the user does not need to purchase a separate license. The user's licensing
costs are included in the platform pricing.
Bring Your
Own license
In this arrangement, the
user imports her license into the RDS platform. It is the user's responsibility
to keep the license, database instance class, and database edition all in sync.
The user directly contacts the Oracle support channel for any need. In this
model the supported editions are Enterprise Edition (EE), Standard Edition
(SE), Standard Edition One (SE1) and Standard Edition Two (SE2).
AWS Simple
Storage Service (S3) Interview Questions and Answers
Ques: 13). If I delete
my DB Instance, what happens to my backups and DB Snapshots?
Answer:
When you delete a
database instance, you have the option of creating a final database snapshot,
which you can use to restore your database. After the instance is removed, RDS
keeps this user-made DB snapshot together with all other manually created DB
snapshots. Automated backups are also deleted, leaving just manually created DB
Snapshots.
AWS Fargate
Interview Questions and Answers
Ques:
14). How can I load data into Amazon Redshift from various data
sources such as Amazon RDS, Amazon DynamoDB, and Amazon EC2?
Answer:
You have two options for
loading the data:
The COPY command can be
used to load data into Amazon Redshift in parallel from Amazon EMR, Amazon
DynamoDB, or any SSH-enabled server.
AWS Data Pipeline is a
fault-tolerant, high-performance solution for loading data from a range of AWS
data sources. To load your data into Amazon Redshift, you can utilise AWS Data
Pipeline to specify the data source, required data transformations, and then
run a pre-written import script.
AWS SageMaker
Interview Questions and Answers
Ques: 15). What is an
RDS instance, and how does it work?
Answer:
The Amazon Relational
Database Service (Amazon RDS) is a web service that lets you easily construct a
cloud-based relational database instance. Amazon RDS administers the database
instance on your behalf, including backups, failover, and database software
maintenance. Read Replicas, which are RDS instances that act as copies of the
source master database for handling read-requests, can be launched for
read-heavy applications. A source DB instance can have up to five (5) Read
Replicas attached to it. The existing RDS Instances in the selected AWS region
are listed on the Instances page. The information for an existing RDS Instance
are displayed when you click on it.
Fields
Name - unique
name/identifier for the RDS instance.
Engine - The version of
the MySQL or Oracle engine of the RDS Instance.
RDS Subnet Group - The
group of RDS Subnets for the VPC.
Availability Zone - The
availability zone into which the RDS Instance will be created and launched.
Multi-AZ - Indicates
that the RDS Instance will be used in a multiple availability zone
configuration.
Instance class - If you
selected a different instance type, the existing instance will be terminated
and new RDS instance will be launched.
Storage - storage size
in GBs for the instance that will be allocated for storing data.
Source instance - If the
instance is a Read Replica, it will list the name of the source DB instance.
Status - The status of
the RDS Instance (creating, modifying, available, rebooting, deleting). An RDS
Instance will only be accessible when its status is 'available'.
AWS DynamoDB Interview
Questions and Answers
Ques: 16). What is
Amazon Aurora and how does it work?
Answer:
Amazon Aurora is a form
of cloud-based relational database that works with MySQL and PostgreSQL. It
performs five times faster than MySQL and three times faster than PostgreSQL.
The performance and availability of traditional databases are combined with the
simplicity and cost-effectiveness of open-source databases in this hybrid
database type. Because Amazon RDS manages this database completely, operations like
hardware provisioning, database setup, patching, and backups are all automated.
AWS Elastic
Block Store (EBS) Interview Questions and Answers
Ques: 17). Which Amazon
Web Services services will you use to collect and process e-commerce data in
real time for analysis?
Answer:
For real-time analysis,
I'll utilise DynamoDB to collect and handle e-commerce data. DynamoDB is a
fully managed NoSQL database service for unstructured data. It can even be used
to extract e-commerce information from websites. RedShift may then be used to
perform analysis on the retrieved e-commerce data. Elastic MapReduce can be
utilised for analysis as well, but we won't use it here because real-time
analysis isn't required.
AWS Amplify
Interview Questions and Answers
Ques: 18). What happens
if a user deletes a dB instance? What happens to the dB snapshots and backups?
Answer:
The user is given the
option of taking a last dB snapshot when a dB instance is removed. If you do
so, your information from the snapshot will be restored. When the dB instance
is removed, AWS RDS preserves all of the user-made dB snapshots together with
all of the other manually created dB snapshots. Automated backups are erased at
the same time, but manually produced dB snapshots are kept.
AWS Secrets
Manager Interview Questions and Answers
Ques: 19). What Is A
Dynamodbmapper Class And How Does It Work?
Answer:
The DynamoDB's entry
point is the mapper class. It allows users to access the endpoint and input the
DynamoDB. Users can use the DynamoDB mapper class to retrieve data stored in
various databases, run queries, scan them against the tables, and perform CRUD
activities on the data items.
AWS Django
Interview Questions and Answers
Ques: 20). What is the
RDS interface, and how does it work?
Answer:
To use the RDS service,
Amazon provides an RDS interface. An RDS interface is required to interact with
the RDS service, such as reading data, uploading data, and running other
programmes.
The GUI Console, Command
Line Interface, and AWS API are the three main interfaces available.
A GUI Console is the
most basic interface via which users can interact with the RDS Service.
The Command Line
Interface (CLI) provides you with CLI access to the service, allowing you to
run DB commands and interact with it.
An AWS API is an
Application Programming Interface that allows two systems to exchange data.
AWS Glue
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