AWS Certified Solutions Architect - Associate Exam Questions And Answers 2022/2023

AWS Certified Solutions Architect - Associate Exam Questions And Answers 2022/2023 Elastic Network Interface (ENI) - Answer- An elastic network interface (ENI) is a logical networking component in a VPC that represents a virtual network card. You can attach a network interface to an EC2 instance in the following ways: When it's running (hot attach) When it's stopped (warm attach) When the instance is being launched (cold attach). Amazon SQS (Simple Queue Service) - Answer- Offers reliable and scalable hosted queues for storing messages as they travel between computer. Provides hosted level queue for storing messages as they travel between computers Makes it easy to build automated workflow between web services Transmit any volume of data, at any throughput level without losing messages or requiring other services to be always available A hosted queue that lets you integrate and decouple distributed software systems and components. SQS supports both standard and FIFO queues. SQS uses pull based (polling) not push based. Users can access Amazon SQS from their VPC using VPC endpoints, without using public IPs, and without needing to traverse the public internet. VPC endpoints for Amazon SQS are powered by AWS PrivateLink. Amazon S3 - Answer- Simple Storage Service (SaaS), a scalable, high-speed, lowcost, web-based cloud storage service designed for online backup and archiving of data and application programs. AWS Lambda - Answer- AWS Lambda - AWS Lambda is a compute service where you can upload your code and the service can run the code on your behalf using the AWS infrastructure. You package up and upload your custom code to AWS Lambda when you create a Lambda function Amazon S3 Notification Feature - Answer- The Amazon S3 notification feature enables you to receive notifications when certain events happen in your bucket. To enable notifications, you must first add a notification configuration identifying the events you want Amazon S3 to publish, and the destinations where you want Amazon S3 to send the event notifications. Amazon S3 supports the following destinations where it can publish events: Amazon Simple Notification Service (Amazon SNS) topic - A web service that coordinates and manages the delivery or sending of messages to subscribing endpoints or clients. Amazon Simple Queue Service (Amazon SQS) queue - Offers reliable and scalable hosted queues for storing messages as they travel between computer. AWS Lambda - AWS Lambda is a compute service where you can upload your code and the service can run the code on your behalf using the AWS infrastructure. You package up and upload your custom code to AWS Lambda when you create a Lambda function Amazon DynamoDB - Answer- DynamoDB is a NoSQL database that supports keyvalue and document data structures. A key-value store is a database service that provides support for storing, querying, and updating collections of objects that are identified using a key and values that contain the actual content being stored. Meanwhile, a document data store provides support for storing, querying, and updating items in a document format such as JSON, XML, and HTML. Amazon S3 as a Database Repository or Search Engine Target - Answer- To speed up access to relevant data, you can pair Amazon S3 with a search engine such as Amazon CloudSearch or a database such as Amazon DynamoDB or Amazon RDS. In these scenarios, Amazon S3 stores the actual information, and the search engine or database serves as the repository for associated metadata such as the object name, size, keywords, and so on. Metadata in the database can easily be indexed and queried, making it very efficient to locate an object's reference by using a search engine or a database query. This result can be used to pinpoint and retrieve the object itself from Amazon S3. Amazon Snowball Edge - Answer- Although an AWS Snowball device costs less than AWS Snowball Edge, it cannot store 80 TB of data in one device. Take note that the storage capacity is different from the usable capacity for Snowball and Snowball Edge. Remember that an 80 TB Snowball appliance and 100 TB Snowball Edge appliance only have 72 TB and 83 TB of usable capacity respectively. Hence, it would be costly if you use two Snowball devices compared to using just one AWS Snowball Edge device. The AWS Snowball Edge is a type of Snowball device with on-board storage and compute power for select AWS capabilities. Snowball Edge can undertake local processing and edge-computing workloads in addition to transferring data between your local environment and the AWS Cloud. Each Snowball Edge device can transport data at speeds faster than the internet. This transport is done by shipping the data in the appliances through a regional carrier. The appliances are rugged shipping containers, complete with E Ink shipping labels. The AWS Snowball Edge device differs from the standard Snowball because it can bring the power of the AWS Cloud to your on-premises location, with local storage and compute functionality. Snowball Edge devices have three options for device configurations - storage optimized, compute optimized, and with GPU. When this guide refers to Snowball Edge devices, it's referring to all options of the device. Whenever specific information applies only to one or more optional configurations of devices, like how the Snowball Edge with GPU has an on-board GPU, it will be called out. AWS Security Token Service (AWS STS) - Answer- AWS Security Token Service (AWS STS) is the service that you can use to create and provide trusted users with temporary security credentials that can control access to your AWS resources. Temporary security credentials work almost identically to the long-term access key credentials that your IAM users can use. In this diagram, IAM user Alice in the Dev account (the role-assuming account) needs to access the Prod account (the role-owning account). Here's how it works: Alice in the Dev account assumes an IAM role (WriteAccess) in the Prod account by calling AssumeRole. STS returns a set of temporary security credentials. Alice uses the temporary security credentials to access services and resources in the Prod account. Alice could, for example, make calls to Amazon S3 and Amazon EC2, which are granted by the WriteAccess role. Amazon Data Lifecycle Manager (Amazon DLM) - Answer- You can use Amazon Data Lifecycle Manager (Amazon DLM) to automate the creation, retention, and deletion of snapshots taken to back up your Amazon EBS volumes. Automating snapshot management helps you to: -Protect valuable data by enforcing a regular backup schedule. -Retain backups as required by auditors or internal compliance. -Reduce storage costs by deleting outdated backups. Combined with the monitoring features of Amazon CloudWatch Events and AWS CloudTrail, Amazon DLM provides a complete backup solution for EBS volumes at no additional cost. Hence, Option 5 is the correct answer as it is the fastest and costeffective solution in providing an automated way of backing up your EBS volumes. Amazon EC2 Autoscaling Cooldown Period - Answer- In Auto Scaling, the following statements are correct regarding the cooldown period: It ensures that the Auto Scaling group does not launch or terminate additional EC2 instances before the previous scaling activity takes effect. Its default value is 300 seconds. It is a configurable setting for your Auto Scaling group. NACL Definition and Execution Process - Answer- A network access control list (ACL) is an optional layer of security for your VPC that acts as a firewall for controlling traffic in and out of one or more subnets. You might set up network ACLs with rules similar to your security groups in order to add an additional layer of security to your VPC. Network ACL Rules are evaluated by rule number, from lowest to highest, and executed immediately when a matching allow/deny rule is found. EBS Replication - Answer- EBS volume in an Availability Zone, it is automatically replicated within that zone only to prevent data loss due to a failure of any single hardware component. After you create a volume, you can attach it to any EC2 instance in the same Availability Zone. Virtual Private Gateway - Answer- By default, instances that you launch into a virtual private cloud (VPC) can't communicate with your own network. You can enable access to your network from your VPC by attaching a virtual private gateway to the VPC, creating a custom route table, updating your security group rules, and creating an AWS managed VPN connection. Although the term VPN connection is a general term, in the Amazon VPC documentation, a VPN connection refers to the connection between your VPC and your own network. AWS supports Internet Protocol security (IPsec) VPN connections. A customer gateway is a physical device or software application on your side of the VPN connection. To create a VPN connection, you must create a customer gateway resource in AWS, which provides information to AWS about your customer gateway device. Next, you have to set up an Internet-routable IP address (static) of the customer gateway's external interface. AWS OpsWorks - Answer- AWS OpsWorks is a configuration management service that provides managed instances of Chef and Puppet. Chef and Puppet are automation platforms that allow you to use code to automate the configurations of your servers. OpsWorks lets you use Chef and Puppet to automate how servers are configured, deployed, and managed across your Amazon EC2 instances or onpremises compute environments. OpsWorks has three offerings - AWS Opsworks for Chef Automate, AWS OpsWorks for Puppet Enterprise, and AWS OpsWorks Stacks. Amazon S3 Data Encryption - Answer- Server-side encryption is about data encryption at rest—that is, Amazon S3 encrypts your data at the object level as it writes it to disks in its data centers and decrypts it for you when you access it. As long as you authenticate your request and you have access permissions, there is no difference in the way you access encrypted or unencrypted objects. For example, if you share your objects using a pre-signed URL, that URL works the same way for both encrypted and unencrypted objects. You have three mutually exclusive options depending on how you choose to manage the encryption keys: Use Server-Side Encryption with Amazon S3-Managed Keys (SSE-S3) Use Server-Side Encryption with AWS KMS-Managed Keys (SSE-KMS) Use Server-Side Encryption with Customer-Provided Keys (SSE-C) Pilot Light - Answer- The term pilot light is often used to describe a DR scenario in which a minimal version of an environment is always running in the cloud. The idea of the pilot light is an analogy that comes from the gas heater. In a gas heater, a small flame that's always on can quickly ignite the entire furnace to heat up a house. This scenario is similar to a backup-and-restore scenario. For example, with AWS you can maintain a pilot light by configuring and running the most critical core elements of your system in AWS. When the time comes for recovery, you can rapidly provision a full-scale production environment around the critical core. RDS Failover - Answer- In Amazon RDS, failover is automatically handled so that you can resume database operations as quickly as possible without administrative intervention in the event that your primary database instance went down. When failing over, Amazon RDS simply flips the canonical name record (CNAME) for your DB instance to point at the standby, which is in turn promoted to become the new primary..........