When you are knowing AWS then why worry about cracking the interview. The following information will give you the strength to face the AWS Interview Questions and also answer them easily. Go through the information and crack the interview. Do not worry about facing the question with the information provided below.
The term AWS has been derived from Amazon Web Service. Basically, this service accumulates most of the remote computing services. The main motto of this service is to broadly adopt a cloud platform. It is globally accessible and also compatible with every software. AWS is found to be a comprehensive representation of most of the services which are running low margin. AWS comes with the power to support their infrastructure, reduce the cost of continuing the process, and also helps to make it more agile. Overall AWS works as a rescuer of software and applications from getting drowned in the pressure of expense and also the pressure of organizing. It is one of the leading cloud platforms in the entire globe.
Ans: AWS stands for Amazon Web Services, which is a cloud computing platform. It is designed in such a way to provide cloud services in the form of small building blocks, and these blocks help create and deploy various types of applications in the cloud. These sequence of small blocks are integrated to deliver the services in a highly scalable manner.
S3 is abbreviated as a simple storage service. It is used for storing and retrieving data at any time and anywhere on the web. S3 makes web-scale computing easier for developers. The payment mode of S3 is available on a pay-as-you-go basis.
PYTHONPATH - It has a role similar to PATH. This variable tells the Python interpreter where to locate the module files imported into a program. It should include the Python source library directory and the directories containing Python source code. PYTHONPATH is sometimes preset by the Python installer.
The key components of AWS are:
It stands for Amazon Machine Image. The AMI contains essential information required to launch an instance, and it is a copy of AMI running in the cloud. You can download as many examples as possible from multiple AIM’s.
Ans: Using a single AIM, you can download as many instances as you can. An instance type is used to define the hardware of the host computer for your situation. Each instance is unique and provides the facilities in computational and storage capabilities. Once you install an instance, it looks similar to a traditional host with which we can interact in the same way we do with a computer.
An AIM consists of the things which are mentioned below
S3 in Amazon is a RESt service, and you can send requests by using the AWS SDK or REST API wrapper libraries.
A namespace is a naming system used to make sure that names are unique to avoid naming conflicts
Key pairs act as a guard to make your login process secured into instances/virtual machines. To log in to the devices, we use both keys, which are a public key and a private key.
An AIM consists of the things which are mentioned below
Below stated are the available instances:
Yes! It is possible in AWS to stop the instances. To do so, we need to stop the server and then make the change instance type and then start the server.
If you want to have a faster and flexible NoSQL database, then the right thing available is DynamoDB, which is a flexible and efficient database model available in Amazon web services.
One thing that must be taken into consideration is that no one should size the data while it is moving from one point to another. The other thing to consider is there should not be any kind of leakages with the security key from the multiple storerooms in the cloud. Dividing the information into different types and encrypting it into valid methods could help you in securing the data in the cloud.
Below listed are the various layers of cloud computing
We have five different types of layers available, which are
It is nothing but a reservation of resources for one or three years and utilized whenever you need it. The reservation comes on a subscription basis available for a term of 1 year and three years. The hourly rate goes down as the usage increases. Purchasing reservation is not just associated with the reservation of resources but also it comes with the capacity that is required for a particular zone.
Cloud watching is a monitoring tool in Amazon Web Services with which you can monitor different resources of your organization. You can have a look at various things like health, applications, network, etc.
We have two types of cloud watching, which are essential monitoring as well as detailed monitoring. The necessary tracking will come to you free of cost, but when it comes to detailed control, you need to pay for it.
The available metrics for EC2 instances are Diskreads, CPU utilization, network packetsOut, CPUCreditUsage, Disk writes, networkpacketsIn, networkOut, CPUCreditBalance.
The minimum size of the object that you can store in S3 is 0 bite, and the maximum size of an individual object that you can save is 5TB.
The default storage class in S3 in Standard is frequently accessed.
Glacier is the backup or archival tool that you use to back up your data in S3.
There are two ways that you can control access to your S3 buckets,
You can encrypt the data by using the below methods,
The pricing model for S3 is as below,
You need to enable versioning on both source bucket and destination to work with cross-region replication. Also, both the source and destination buckets should be in different regions.
Roles are used to providing permissions to entities that you trust within your AWS account. Roles are users in another account. Roles are similar to users but with roles, you do not need to create any username and password to work with the resources.
Policies are permissions that you can attach to the users that you create. These policies will contain the access that you have provided to the users that you have created. There are 2 types of policies.
Cloudfront is an AWS web service that provided businesses and application developers an easy and efficient way to distribute their content with low latency and high data transfer speeds. Cloudfront is the content delivery network of AWS.
The edge location is the place where the contents will be cached. When a user tries to access some content, the content will be searched in the edge location. If it is not available then the content will be made available from the original location and a copy will be stored in the edge location.
You can store a maximum individual archive of up to 40 TB.
VPC stands for Virtual Private Cloud. VPC allows you to easily customize your networking configuration. VPC is a network that is logically isolated from another network in the cloud. It allows you to have your own IP address range, subnets, internet gateways, NAT gateways, and security groups.
VPC peering connection allows you to connect 1 VPC with another VPC. Instances in this VPC behave as if they are in the same network.
NAT stands for Network Address Translation. NAT gateways enable instances in a private subnet to connect to the internet but prevent the internet from initiating a connection with those instances.
You can use security groups and NACL (Network Access Control List) to control the security of your VPC.
Following are the types of storage gateway.
You can use security groups and NACL (Network Access Control List) to control the security of your VPC.
Snowball is a data transport solution that used source appliances to transfer large amounts of data into and out of AWS. Using snowball, you can move a huge amount of data from one place to another which reduces your network costs, long transfer times and also provides better security.
Following are the types of databases in RDS
Amazon redshift is a data warehouse product. It is a fast and powerful, fully managed, petabyte-scale data warehouse service in the cloud.
SNS stands for Simple Notification Service. SNS is a web service that makes it easy to notifications from the cloud. You can set up SNS to receive email notifications or message notifications.
Following are the types of routing policies in route53.
The maximum size of messages in SQS is 256 KB.
There are 2 types of queues in SQS.
Multi-AZ (Availability Zone) RDS allows you to have a replica of your production database in another availability zone. Multi-AZ (Availability Zone) database is used for disaster recovery. You will have an exact copy of your database. So when your primary database goes down, your application will automatically fail over to the standby database.
The AWS field provides several positions and obviously numerous jobs. You can be an AWS cloud architect, SysOps administrator, cloud developer, cloud sales& purchase manager, and much more. Having knowledge and certification on AWS will bring you a good number of job opportunities that are offering handsome salaries. The salary ranges from 82,000 dollars to 140,000 dollars in a year. The salary package and the securities depend on your designation. For IT job seekers knowing AWS is a great benefit.
AWS is considered to be one of the friendly cloud platforms in the clone. It is in partnership with many businesses and software. The multifunctional behavior makes it unique and greatly useful. It is a one-stop solution for all applications and software to stay organized and run the business with never seen tools.