Latest AWS Interview Questions:
Part – B, having 50 questions. Visit next part for more questions.
Q51) What is the difference between the classic load balancer and application load balancer?
Answer: Dynamic port mapping, multiple port multiple listeners is used in Application Load Balancer, One port one listener is achieved via Classic Load Balancer
Q52) By default how many Ip address does aws reserve in a subnet?
Answer: 5
Q53) What is meant by subnet?
Answer: A large section of IP Address divided in to chunks are known as subnets
Q54) How can you convert a public subnet to private subnet?
Answer: Remove IGW & add NAT Gateway, Associate subnet in Private route table
Q55) Is it possible to reduce a ebs volume?
Answer: no it’s not possible, we can increase it but not reduce them
Q56) What is the use of elastic ip are they charged by AWS?
Answer: These are ipv4 address which are used to connect the instance from internet, they are charged if the instances are not attached to it
Q57) One of my s3 is bucket is deleted but i need to restore is there any possible way?
Answer: If versioning is enabled we can easily restore them
Q58) When I try to launch an ec2 instance i am getting Service limit exceed, how to fix the issue?
Answer: By default AWS offer service limit of 20 running instances per region, to fix the issue we need to contact AWS support to increase the limit based on the requirement
Q59) I need to modify the ebs volumes in Linux and windows is it possible?
Answer: yes its possible from console use modify volumes in section give the size u need then for windows go to disk management for Linux mount it to achieve the modification
Q60) Is it possible to stop a RDS instance, how can I do that?
Answer: Yes it’s possible to stop rds. Instance which are non-production and non multi AZ’s
Q61) What is meant by parameter groups in rds. And what is the use of it?
Answer: Since RDS is a managed service AWS offers a wide set of parameter in RDS as parameter group which is modified as per requirement
Q62) What is the use of tags and how they are useful?
Answer: Tags are used for identification and grouping AWS Resources
Q63) I am viewing an AWS Console but unable to launch the instance, I receive an IAM Error how can I rectify it?
Answer: As AWS user I don’t have access to use it, I need to have permissions to use it further
Q64) I don’t want my AWS Account id to be exposed to users how can I avoid it?
Answer: In IAM console there is option as sign in url where I can rename my own account name with AWS account
Q65) By default how many Elastic Ip address does AWS Offer?
Answer: 5 elastic ip per region
Q66) You are enabled sticky session with ELB. What does it do with your instance?
Answer: Binds the user session with a specific instance
Q67) Which type of load balancer makes routing decisions at either the transport layer or the Application layer and supports either EC2 or VPC.
Answer: Classic Load Balancer
Q68) Which is virtual network interface that you can attach to an instance in a VPC?
Answer: Elastic Network Interface
Q69) You have launched a Linux instance in AWS EC2. While configuring security group, you Have selected SSH, HTTP, HTTPS protocol. Why do we need to select SSH?
Answer: To verify that there is a rule that allows traffic from EC2 Instance to your computer
Q70) You have chosen a windows instance with Classic and you want to make some change to the Security group. How will these changes be effective?
Answer: Changes are automatically applied to windows instances
Q71) Load Balancer and DNS service comes under which type of cloud service?
Answer: IAAS-Storage
Q72) You have an EC2 instance that has an unencrypted volume. You want to create another Encrypted volume from this unencrypted volume. Which of the following steps can achieve this?
Answer: Create a snapshot of the unencrypted volume (applying encryption parameters), copy the. Snapshot and create a volume from the copied snapshot
Q73) Where does the user specify the maximum number of instances with the auto scaling Commands?
Answer: Auto scaling Launch Config
Q74) Which are the types of AMI provided by AWS?
Answer: Instance Store backed, EBS Backed
Q75) After configuring ELB, you need to ensure that the user requests are always attached to a Single instance. What setting can you use?
Answer: Sticky session
Q76) When do I prefer to Provisioned IOPS over the Standard RDS storage?
Answer:If you have do batch-oriented is workloads.
Q77) If I am running on my DB Instance a Multi-AZ deployments, can I use to the stand by the DB Instance for read or write a operation along with to primary DB instance?
Answer: Primary db instance does not working.
Q78) Which the AWS services will you use to the collect and the process e-commerce data for the near by real-time analysis?
Answer: Good of Amazon DynamoDB.
Q79) A company is deploying the new two-tier an web application in AWS. The company has to limited on staff and the requires high availability, and the application requires to complex queries and table joins. Which configuration provides to the solution for company’s requirements?
Answer: An web application provide on Amazon DynamoDB solution.
Q80) Which the statement use to cases are suitable for Amazon DynamoDB?
Answer:The storing metadata for the Amazon S3 objects& The Running of relational joins and complex an updates.
Q81) Your application has to the retrieve on data from your user’s mobile take every 5 minutes and then data is stored in the DynamoDB, later every day at the particular time the data is an extracted into S3 on a per user basis and then your application is later on used to visualize the data to user. You are the asked to the optimize the architecture of the backend system can to lower cost, what would you recommend do?
Answer: Introduce Amazon Elasticache to the cache reads from the Amazon DynamoDB table and to reduce the provisioned read throughput.
Q82) You are running to website on EC2 instances can deployed across multiple Availability Zones with an Multi-AZ RDS MySQL Extra Large DB Instance etc. Then site performs a high number of the small reads and the write per second and the relies on the eventual consistency model. After the comprehensive tests you discover to that there is read contention on RDS MySQL. Which is the best approaches to the meet these requirements?
Answer:The Deploy Elasti Cache in-memory cache is running in each availability zone and Then Increase the RDS MySQL Instance size and the Implement provisioned IOPS.
Q83) An startup is running to a pilot deployment of around 100 sensors to the measure street noise and The air quality is urban areas for the 3 months. It was noted that every month to around the 4GB of sensor data are generated. The company uses to a load balanced take auto scaled layer of the EC2 instances and a RDS database with a 500 GB standard storage. The pilot was success and now they want to the deploy take atleast 100K sensors.let which to need the supported by backend. You need to the stored data for at least 2 years to an analyze it. Which setup of following would you be prefer?
Answer: The Replace the RDS instance with an 6 node Redshift cluster with take 96TB of storage.
Q84) Let to Suppose you have an application where do you have to render images and also do some of general computing. which service will be best fit your need?
Answer:Used on Application Load Balancer.
Q85) How will change the instance give type for the instances, which are the running in your applications tier and Then using Auto Scaling. Where will you change it from areas?
Answer: Changed to Auto Scaling launch configuration areas.
Q86) You have an content management system running on the Amazon EC2 instance that is the approaching 100% CPU of utilization. Which option will be reduce load on the Amazon EC2 instance?
Answer: Let Create a load balancer, and Give register the Amazon EC2 instance with it.
Q87) What does the Connection of draining do?
Answer: The re-routes traffic from the instances which are to be updated (or) failed an health to check.
Q88) When the instance is an unhealthy, it is do terminated and replaced with a new ones, which of the services does that?
Answer: The service make a fault tolerance.
Q89) What are the life cycle to hooks used for the AutoScaling?
Answer: They are used to the put an additional taken wait time to the scale in or scale out events.
Q90) An user has to setup an Auto Scaling group. Due to some issue the group has to failed for launch a single instance for the more than 24 hours. What will be happen to the Auto Scaling in the condition?
Answer: The auto Scaling will be suspend to the scaling process.
Q91) You have an the EC2 Security Group with a several running to EC2 instances. You changed to the Security of Group rules to allow the inbound traffic on a new port and protocol, and then the launched a several new instances in the same of Security Group.Such the new rules apply?
Answer:The Immediately to all the instances in security groups.
Q92) To create an mirror make a image of your environment in another region for the disaster recoverys, which of the following AWS is resources do not need to be recreated in second region?
Answer: May be the selected on Route 53 Record Sets.
Q93) An customers wants to the captures all client connections to get information from his load balancers at an interval of 5 minutes only, which cal select option should he choose for his application?
Answer: The condition should be Enable to AWS CloudTrail for the load balancers.
Q94) Which of the services to you would not use to deploy an app?
Answer: Lambda app not used on deploy.
Q95) How do the Elastic Beanstalk can apply to updates?
Answer: By a duplicate ready with a updates prepare before swapping.
Q96) An created a key in the oregon region to encrypt of my data in North Virginia region for security purposes. I added to two users to the key and the external AWS accounts. I wanted to encrypt an the object in S3, so when I was tried, then key that I just created is not listed.What could be reason&solution?
Answer: The Key should be working in the same region.
Q97) As a company needs to monitor a read and write IOPS for the AWS MySQL RDS instances and then send real-time alerts to the operations of team. Which AWS services to can accomplish this?
Answer: The monitoring on Amazon CloudWatch
Q98) The organization that is currently using the consolidated billing has to recently acquired to another company that already has a number of the AWS accounts. How could an Administrator to ensure that all the AWS accounts, from the both existing company and then acquired company, is billed to the single account?
Answer: All Invites take acquired the company’s AWS account to join existing the company’s of organization by using AWS Organizations.
Q99) The user has created an the applications, which will be hosted on the EC2. The application makes calls to the Dynamo DB to fetch on certain data. The application using the DynamoDB SDK to connect with the EC2 instance. Which of respect to best practice for the security in this scenario?
Answer: The user should be attach an IAM roles with the DynamoDB access to EC2 instance.
Q100) You have an application are running on EC2 Instance, which will allow users to download the files from a private S3 bucket using the pre-assigned URL. Before generating to URL the Q101) application should be verify the existence of file in S3. How do the application use the AWS credentials to access S3 bucket securely?
Answer: An Create an IAM role for the EC2 that allows list access to objects in S3 buckets. Launch to instance with this role, and retrieve an role’s credentials from EC2 Instance make metadata.