Question : An organization is planning to use AWS for their production roll out. The organization wants to implement automation for deployment such that it will automatically create a LAMP stack, download the latest PHP installable from S3 and setup the ELB. Which of the below mentioned AWS services meets the quirement for making an orderly deployment of the software? 1. AWS Elastic Beanstalk 2. AWS Cloudfront 3. Access Mostly Uused Products by 50000+ Subscribers 4. AWS DevOps
Ans : 3 Exp : AWS Cloudformation is an application management tool which provides application modelling, deployment, configuration, management and related activities. Cloudformation provides an easy way to create and delete the collection of related AWS resources and provision them in an orderly way. AWS CloudFormation automates and simplifies the task of repeatedly and predictably creating groups of related resources that power the user's applications. AWS Cloudfront is a CDN; Elastic Beanstalk does quite a few of the required tasks. However, it is a PAAS which uses a ready AMI. AWS Elastic Beanstalk provides an environment to easily develop and run applications in the cloud.
Question A user has created a subnet with VPC and launched an EC instance in that subnet with only default settings.Which of the below mentioned options is ready to use on the EC2 instance as soon as it is launched? 1. Elastic IP 2. Private IP 3. Access Mostly Uused Products by 50000+ Subscribers 4. Internet gateway
Ans : 2 Exp : A Virtual Private Cloud (VPC. is a virtual network dedicated to a user's AWS account. A subnet is a range of IP addresses in the VPC. The user can launch the AWS resources into a subnet. There are two supported platforms into which a user can launch instances: EC2-Classic and EC2-VPC. When the user launches an instance which is not a part of the non-default subnet, it will only have a private IP assigned to it. The instances part of a subnet can communicate with each other but cannot communicate over the internet or to the AWS services, such as RDS / S3.
Question : An organization is setting up programmatic billing access for their AWS account. Which of the below mentioned services is not required or enabled when the organization wants to use programmatic access? 1. Programmatic access 2. AWS bucket to hold the billing report 3. Access Mostly Uused Products by 50000+ Subscribers 4. Monthly Billing report Ans : 3 Exp : AWS provides an option to have programmatic access to billing. Programmatic Billing Access leverages the existing Amazon Simple Storage Service (Amazon S3. APIs. Thus, the user can build applications that reference his billing data from a CSV (comma-separated value. file stored in an Amazon S3 bucket. To enable programmatic access, the user has to first enable the monthly billing report. Then the user needs to provide an AWS bucket name where the billing CSV will be uploaded. The user should also enable the Programmatic access option.
Question A user has configured the Auto Scaling group with the minimum capacity as and the maximum capacity as . When the user configures the AS group, how many instances will Auto Scaling launch?
Ans : 3 Exp : When the user configures the launch configuration and the Auto Scaling group, the Auto Scaling group will start instances by launching the minimum number (or the desired number, if specified. of EC2 instances. If there are no other scaling conditions attached to the Auto Scaling group, it will maintain the minimum number of running instances at all times.
Question : An admin is planning to monitor the ELB. Which of the below mentioned services does not help the admin capture the monitoring information about the ELB activity?
Ans : 2 Exp : The admin can capture information about Elastic Load Balancer using either: CloudWatch Metrics ELB Logs files which are stored in the S3 bucket CloudTrail with API calls which can notify the user as well generate logs for each API calls The health check is internally performed by ELB and does not help the admin get the ELB activity.
Question : A user is planning to use AWS Cloudformation. Which of the below mentioned functionalities does not help him to correctly understand Cloudfromation?
1. Cloudformation follows the DevOps model for the creation of Dev & Test 2. AWS Cloudfromation does not charge the user for its service but only charges for the AWS resources created with it 3. Access Mostly Uused Products by 50000+ Subscribers ELB, etc 4. CloudFormation provides a set of application bootstrapping scripts which enables the user to install Software
Ans : 1 Exp : AWS Cloudformation is an application management tool which provides application modelling, deployment, configuration, management and related activities. It supports a wide variety of AWS services, such as EC2, EBS, AS, ELB, RDS, VPC, etc. It also provides application bootstrapping scripts which enable the user to install software packages or create folders. It is free of the cost and only charges the user for the services created with it. The only challenge is that it does not follow any model, such as DevOps; instead customers can define templates and use them to provision and manage the AWS resources in an orderly way.
Question : A user has launched instances from the same AMI ID using Auto Scaling. The user is trying to see the average CPU utilization across all instances of the last 2 weeks under the CloudWatch console. How can the user achieve this? 1. View the Auto Scaling CPU metrics 2. Aggregate the data over the instance AMI ID 3. Access Mostly Uused Products by 50000+ Subscribers 4. It is not possible to see the average CPU utilization of the same AMI ID since the instance ID is different
Ans : 2 Exp : Amazon CloudWatch is basically a metrics repository. Either the user can send the custom data or an AWS product can put metrics into the repository, and the user can retrieve the statistics based on those metrics. The statistics are metric data aggregations over specified periods of time. Aggregations are made using the namespace, metric name, dimensions, and the data point unit of measure, within the time period that is specified by the user. To aggregate the data across instances launched with AMI, the user should select the AMI ID under EC2 metrics and select the aggregate average to view the data.
Question : A user is trying to understand AWS SNS. To which of the below mentioned end points is SNS unable to send a notification? 1. Email JSON 2. HTTP 3. Access Mostly Uused Products by 50000+ Subscribers 4. AWS SES Ans : 4 Exp : Amazon Simple Notification Service (Amazon SNS. is a fast, flexible, and fully managed push messaging service. Amazon SNS can deliver notifications by SMS text message or email to the Amazon Simple Queue Service (SQS. queues or to any HTTP endpoint. The user can select one the following transports as part of the subscription requests: "HTTP", "HTTPS","Email", "Email- JSON", "SQS", "and SMS".
Question : A user has configured an Auto Scaling group with ELB. The user has enabled detailed CloudWatch monitoring on Auto Scaling. Which of the below mentioned statements will help the user understand the functionality better? 1. It is not possible to setup detailed monitoring for Auto Scaling 2. In this case, Auto Scaling will send data every minute and will charge the user extra 3. Access Mostly Uused Products by 50000+ Subscribers
4. Auto Scaling sends data every minute only and does not charge the user Ans : 2 Exp : CloudWatch is used to monitor AWS as well as the custom services. It provides either basic or detailed monitoring for the supported AWS products. In basic monitoring, a service sends data points to CloudWatch every five minutes, while in detailed monitoring a service sends data points to CloudWatch every minute. Auto Scaling includes 7 metrics and 1 dimension, and sends data to CloudWatch every 5 minutes by default. The user can enable detailed monitoring for Auto Scaling, which sends data to CloudWatch every minute. However, this will have some extra-costs.
Question : A system admin is planning to setup event notifications on RDS. Which of the below mentioned services will help the admin setup notifications? 1. AWS SES 2. AWS Cloudtrail 3. Access Mostly Uused Products by 50000+ Subscribers 4. AWS SNS
Ans : 4 Exp : Amazon RDS uses the Amazon Simple Notification Service to provide a notification when an Amazon RDS event occurs. These notifications can be in any notification form supported by Amazon SNS for an AWS region, such as an email, a text message or a call to an HTTP endpoint
Question : You are building an online store on AWS that uses SQS to process your customer orders. Your backend system needs those messages in the same sequence the customer orders have been put in. How can you achieve that?
1. It is not possible to do this with SQS 2. You can use sequencing information on each message 3. Access Mostly Uused Products by 50000+ Subscribers 4. Messages will arrive in the same order by default Ans : 2 Exp : Amazon SQS is engineered to always be available and deliver messages. One of the resulting tradeoffs is that SQSdoes not guarantee first in, first out delivery of messages. For many distributed applications, each message can stand on its own, and as long as all messages are delivered, the order is not important. If your system requires that order be preserved, you can place sequencing information in each message, so that you can reorder the messages when the queue returns them.
Question : An organization wants to move to Cloud. They are looking for a secure encrypted database storage option. Which of the below mentioned AWS functionalities helps them to achieve this?
Ans : 2 Exp : AWS EBS supports encryption of the volume while creating new volumes. It also supports creating volumes from existing snapshots provided the snapshots are created from encrypted volumes. The data at rest, the I/O as well as all the snapshots of EBS will be encrypted. The encryption occurs on the servers that host the EC2 instances, providing encryption of data as it moves between the EC2 instances and EBS storage. EBS encryption is based on the AES-256 cryptographic algorithm, which is the industry standard
Question : A user wants to disable connection draining on an existing ELB. Which of the below mentioned statements helps the user disable connection draining on the ELB?
1. The user can only disable connection draining from CLI 2. It is not possible to disable the connection draining feature once enabled 3. Access Mostly Uused Products by 50000+ Subscribers 4. The user needs to stop all instances before disabling connection draining
Ans : 3 Exp : The Elastic Load Balancer connection draining feature causes the load balancer to stop sending new requests to the back-end instances when the instances are deregistering or become unhealthy, while ensuring that inflight requests continue to be served. The user can enable or disable connection draining from the AWS EC2 console -> ELB or using CLI.
Question : A user has a refrigerator plant. The user is measuring the temperature of the plant every minutes. If the user wants to send the data to CloudWatch to view the data visually, which of the below mentioned statements is true with respect to the information given above?
1. The user needs to use AWS CLI or API to upload the data 2. The user can use the AWS Import Export facility to import data to CloudWatch 3. Access Mostly Uused Products by 50000+ Subscribers 4. The user cannot upload data to CloudWatch since it is not an AWS service metric Ans : 1 Exp : AWS CloudWatch supports the custom metrics. The user can always capture the custom data and upload the data to CloudWatch using CLI or APIs. While sending the data the user has to include the metric name, namespace and timezone as part of the request.
Question A system admin is managing buckets, objects and folders with AWS S. Which of the below mentioned statements is true and should be taken in consideration by the sysadmin?
1. The folders support only ACL 2. The user can use the AWS Import Export facility to import data to CloudWatch 3. Access Mostly Uused Products by 50000+ Subscribers 4. Both the object and bucket can have ACL but folders cannot have ACL Ans : 1 Exp : A sysadmin can grant permission to the S3 objects or the buckets to any user or make objects public using the bucket policy and user policy. Both use the JSON-based access policy language. Generally if user is defining the ACL on the bucket, the objects in the bucket do not inherit it and vice a versa. The bucket policy can be defined at the bucket level which allows the objects as well as the bucket to be public with a single policy applied to that bucket. It cannot be applied at the object level. The folders are similar to objects with no content. Thus, folders can have only ACL and cannot have a policy.
Question : A user has created an ELB with three instances. How many security groups will ELB create by default? 1. 3 2. 5 3. Access Mostly Uused Products by 50000+ Subscribers 4. 1 Ans : 3 Exp : Elastic Load Balancing provides a special Amazon EC2 source security group that the user can use to ensure that back-end EC2 instances receive traffic only from Elastic Load Balancing. This feature needs two security groups: the source security group and a security group that defines the ingress rules for the back-end instances. To ensure that traffic only flows between the load balancer and the back-end instances, the user can add or modify a rule to the back-end security group which can limit the ingress traffic. Thus, it can come only from the source security group provided by Elastic load Balancing.
Question : An organization has created IAM users. The organization wants that each user can change their password but cannot change their access keys. How can the organization achieve this? 1. The organization has to create a special password policy and attach it to each user 2. The root account owner has to use CLI which forces each IAM user to change their password on first login 3. Access Mostly Uused Products by 50000+ Subscribers 4. The root account owner can set the policy from the IAM console under the password policy screen
Ans : 4 Exp : With AWS IAM, organizations can use the AWS Management Console to display, create, change or delete a password policy. As a part of managing the password policy, the user can enable all users to manage their own passwords. If the user has selected the option which allows the IAM users to modify their password, he does not need to set a separate policy for the users. This option in the AWS console allows changing only the password.
Question : A user has created a photo editing software and hosted it on EC. The software accepts requests from the user about the photo format and resolution and sends a message to S3 to enhance the picture accordingly.Which of the below mentioned AWS services will help make a scalable software with the AWS infrastructure in this scenario?
1. AWS Glacier 2. AWS Elastic Transcoder 3. Access Mostly Uused Products by 50000+ Subscribers 4. AWS Simple Queue Service Ans : 4 Exp : Amazon Simple Queue Service (SQS. is a fast, reliable, scalable, and fully managed message queuing service. SQS provides a simple and cost-effective way to decouple the components of an application. The user can configure SQS, which will decouple the call between the EC2 application and S3. Thus, the application does not keep waiting for S3 to provide the data.
Question : An application is generating a log file every minutes. The log file is not critical but may be required only for verification in case of some major issue. The file should be accessible over the internet whenever required. Which of the below mentioned options is a best possible storage solution for it?
1. AWS S3 2. AWS Glacier 3. Access Mostly Uused Products by 50000+ Subscribers 4. AWS RRS Ans : 4 Exp : Amazon S3 stores objects according to their storage class. There are three major storage classes: Standard, Reduced Redundancy Storage and Glacier. Standard is for AWS S3 and provides very high durability. However, the costs are a little higher. Glacier is for archival and the files are not available over the internet. Reduced Redundancy Storage is for less critical files. Reduced Redundancy is little cheaper as it provides less durability in comparison to S3. In this case since the log files are not mission critical files, RRS will be a better option.
Question : A user has created a VPC with CIDR .../. The user has created a public subnet with CIDR .../. The user is trying to create the private subnet with CIDR 20.0.0.128/25. Which of the below mentioned statements is true in this scenario?
1. It will not allow the user to create the private subnet due to a CIDR overlap 2. It will allow the user to create a private subnet with CIDR as 20.0.0.128/25 3. Access Mostly Uused Products by 50000+ Subscribers 4. It will not allow the user to create a private subnet due to a wrong CIDR range
Ans : 2 Exp : When the user creates a subnet in VPC, he specifies the CIDR block for the subnet. The CIDR block of a subnet can be the same as the CIDR block for the VPC for a single subnet in the VPC., or a subset to enable multiple subnets.. If the user creates more than one subnet in a VPC, the CIDR blocks of the subnets must not overlap. Thus, in this case the user has created a VPC with the CIDR block 20.0.0.0/24, which supports 256 IP addresses 20.0.0.0 to 20.0.0.255.. The user can break this CIDR block into two subnets, each supporting 128 IP addresses. One subnet uses the CIDR block 20.0.0.0/25 for addresses 20.0.0.0 - 20.0.0.127. and the other uses the CIDR block 20.0.0.128/25 for addresses 20.0.0.128 - 20.0.0.255..
Question : A user has created an S bucket which is not publicly accessible. And in bucket there are thirty objects which are also private. If the user wants to make the objects public, how can he configure this with minimal efforts? 1. The user should select all objects from the console and apply a single policy to mark them public 2. The user can write a program which programmatically makes all objects public using S3 SDK 3. Access Mostly Uused Products by 50000+ Subscribers 4. Make the bucket ACL as public so it will also mark all objects as public
Ans : 3 Exp : A system admin can grant permission of the S3 objects or buckets to any user or make the objects public using the bucket policy and user policy. Both use the JSON-based access policy language. Generally if the user is defining the ACL on the bucket, the objects in the bucket do not inherit it and vice a versa. The bucket policy can be defined at the bucket level which allows the objects as well as the bucket to be public with a single policy applied to that bucket.
Question : A sys admin is maintaining an application on AWS. The application is installed on EC and user has configured ELB and Auto Scaling. Considering future load increase, the user is planning to launch new servers proactively so that they get registered with ELB. How can the user add these instances with Auto Scaling?
1. Increase the desired capacity of the Auto Scaling group 2. Increase the maximum limit of the Auto Scaling group 3. Access Mostly Uused Products by 50000+ Subscribers 4. Decrease the minimum limit of the Auto Scaling grou Ans : 1 Exp : A user can increase the desired capacity of the Auto Scaling group and Auto Scaling will launch a new instance as per the new capacity. The newly launched instances will be registered with ELB if Auto Scaling group is configured with ELB. If the user decreases the minimum size the instances will be removed from Auto Scaling. Increasing the maximum size will not add instances but only set the maximum instance cap.
Question : An organization, which has the AWS account ID as , has created IAM users. All the users are added to the same group hadoopexam. If the organization has enabled that each IAM user can login with the AWS console, which AWS login URL will the IAM users use? 1. https:// 999988887777.signin.aws.amazon.com/console/ 2. https:// signin.aws.amazon.com/hadoopexam/ 3. Access Mostly Uused Products by 50000+ Subscribers 4. https:// 999988887777.aws.amazon.com/ hadoopexam/
Ans : 1 Exp : AWS Identity and Access Management is a web service which allows organizations to manage users and user permissions for various AWS services. Once the organization has created the IAM users, they will have a separate AWS console URL to login to the AWS console. The console login URL for the IAM user will be https:// AWS_Account_ID.signin.aws.amazon.com/console/. It uses only the AWS account ID and does not depend on the group or user ID.
Question : A user has setup connection draining with ELB to allow in-flight requests to continue while the instance is being deregistered through Auto Scaling. If the user has not specified the draining time, how long will ELB allow inflight requests traffic to continue? 1. 600 seconds 2. 3600 seconds 3. Access Mostly Uused Products by 50000+ Subscribers 4. 0 seconds Ans : 3 Exp : The Elastic Load Balancer connection draining feature causes the load balancer to stop sending new requests to the back-end instances when the instances are deregistering or become unhealthy, while ensuring that inflight requests continue to be served. The user can specify a maximum time 3600 seconds. for the load balancer to keep the connections alive before reporting the instance as deregistered. If the user does not specify the maximum timeout period, by default, the load balancer will close the connections to the deregistering instance after 300 seconds.
Question : An organization has created IAM users. The organization has introduced a new policy which will change the access of an IAM user. How can the organization implement this effectively so that there is no need to apply the policy at the individual user level? 1. Use the IAM groups and add users as per their role to different groups and apply policy to group 2. The user can create a policy and apply it to multiple users in a single go with the AWS CLI 3. Access Mostly Uused Products by 50000+ Subscribers 4. Use the IAM role and implement access at the role level
Ans : 1 Exp : With AWS IAM, a group is a collection of IAM users. A group allows the user to specify permissions for a collection of users, which can make it easier to manage the permissions for those users. A group helps an organization manage access in a better way; instead of applying at the individual level, the organization can apply at the group level which is applicable to all the users who are a part of that group.
Question : A user is planning to use AWS Cloud formation for his automatic deployment requirements. Which of the below mentioned components are required as a part of the template? 1. Parameters 2. Outputs 3. Access Mostly Uused Products by 50000+ Subscribers 4. Resources
Ans : 4 Exp : AWS Cloud formation is an application management tool which provides application modelling, deployment, configuration, management and related activities. The template is a JSON-format, text-based file that describes all the AWS resources required to deploy and run an application. It can have option fields, such as Template Parameters, Output, Data tables, and Template file format version. The only mandatory value is Resource. The user can define the AWS services which will be used/ created by this template inside the Resource section
Question : A user has recently started using EC. The user launched one EC instance in the default subnet in EC-VPC Which of the below mentioned options is not attached or available with the EC2 instance when it is launched?
Ans : 3 Exp : A Virtual Private Cloud VPC. is a virtual network dedicated to a user's AWS account. A subnet is a range of IP addresses in the VPC. The user can launch the AWS resources into a subnet. There are two supported platforms into which a user can launch instances: EC2-Classic and EC2-VPC default subnet.. A default VPC has all the benefits of EC2-VPC and the ease of use of EC2- Classic. Each instance that the user launches into a default subnet has a private IP address and a public IP address. These instances can communicate with the internet through an internet gateway. An internet gateway enables the EC2 instances to connect to the internet through the Amazon EC2 network edge.
Elastic IP will not be available to this instance by default, you have to explicitely reserve an Elastic IP and then you can attach that EIP to your EC2 instance. Once EIP is attached to EC2 instance, public IP will be released from that instance.
Question : A user has launched an EC instance. The user is planning to setup the CloudWatch alarm. Which of the below mentioned actions is not supported by the CloudWatch alarm?
1. Notify the Auto Scaling launch config to scale up 2. Send an SMS using SNS 3. Access Mostly Uused Products by 50000+ Subscribers 4. Stop the EC2 instance 5. None of the above Ans : 5 Exp : A user can create a CloudWatch alarm that takes various actions when the alarm changes state. An alarm watches a single metric over the time period that the user has specified, and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods. The actions could be sending a notification to an Amazon Simple Notification Service topic (SMS, Email, and HTTP end point.,notifying the Auto Scaling policy or changing the state of the instance to Stop/Terminate.
Question : A user is trying to delete an Auto Scaling group from CLI. Which of the below mentioned steps are to be performed by the user? 1. Terminate the instances with the ec2-terminate-instance command 2. Terminate the Auto Scaling instances with the as-terminate-instance command 3. Access Mostly Uused Products by 50000+ Subscribers 4. There is no need to change the capacity. Run the as-delete-group command and it will reset all values to 0 Ans : 3 Exp : If the user wants to delete the Auto Scaling group, the user should manually set the values of the minimum and desired capacity to 0. Otherwise Auto Scaling will not allow for the deletion of the group from CLI. While trying from the AWS console, the user need not set the values to 0 as the Auto Scaling console will automatically do so.
Question : An organization is planning to create different AWS accounts considering various security requirements. Ans also wants to use a single payee account by using the consolidated billing option. Which of the below mentioned statements is true with respect to the above information? 1. Master Payee account will get only the total bill and cannot see the cost incurred by each account 2. Master Payee account can view only the AWS billing details of the linked accounts 3. Access Mostly Uused Products by 50000+ Subscribers 4. Each AWS account needs to create an AWS billing policy to provide permission to the payee account Ans : 2 Exp : AWS consolidated billing enables the organization to consolidate payments for multiple Amazon Web Services accounts within a single organization by making a single paying account. Consolidated billing enables the organization to see a combined view of the AWS charges incurred by each account as well as obtain a detailed cost report for each of the individual AWS accounts associated with the paying account. The payee account will not have any other access than billing data of linked accounts.
Question : A user has deployed an application on his private cloud. The user is using his own monitoring tool. He wants to configure that whenever there is an error, the monitoring tool should notify him via SMS. Which of the below mentioned AWS services will help in this scenario? 1. AWS SMS 2. AWS SNS 3. Access Mostly Uused Products by 50000+ Subscribers 4. None because the user infrastructure is in the private cloud
Ans : 2 Exp : Amazon Simple Notification Service Amazon SNS. is a fast, flexible, and fully managed push messaging service. Amazon SNS can be used to make push notifications to mobile devices. Amazon SNS can deliver notifications by SMS text message or email to the Amazon Simple Queue Service SQS queues or to any HTTP endpoint. In this case user can use the SNS apis to send SMS.
Question : A user has created a web application with Auto Scaling. The user is regularly monitoring the application and he observed that the traffic is highest on Thursday and Friday between 8 AM to 6 PM. What is the best solution to handle scaling in this case? 1. Add a new instance manually by 8 AM Thursday and terminate the same by 6 PM Friday 2. Schedule Auto Scaling to scale up by 8 AM Thursday and scale down after 6 PM on Friday 3. Access Mostly Uused Products by 50000+ Subscribers 4. Configure a batch process to add a instance by 8 AM and remove it by Friday 6 PM
Ans : 2 Exp : Auto Scaling based on a schedule allows the user to scale the application in response to predictable load changes. In this case the load increases by Thursday and decreases by Friday. Thus, the user can setup the scaling activity based on the predictable traffic patterns of the web application using Auto Scaling scale by Schedule.
Question : A user has setup a CloudWatch alarm on an EC action when the CPU utilization is above %. The alarm sends a notification to SNS on the alarm state. If the user wants to simulate the alarm action how can he achieve this?
1. Run activities on the CPU such that its utilization reaches above 75% 2. From the AWS console change the state to 'Alarm' 3. Access Mostly Uused Products by 50000+ Subscribers 4. Run the SNS action manually Ans : 3 Exp : Amazon CloudWatch alarms watch a single metric over a time period that the user specifies and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods.The user can test an alarm by setting it to any state using the SetAlarmState API mon-set-alarm-state command. This temporary state change lasts only until the next alarm comparison occurs.
Question : A user is trying to setup a scheduled scaling activity using Auto Scaling. The user wants to setup the recurring schedule. Which of the below mentioned parameters is not required in this case?
Ans : 3 Exp : Auto Scaling based on a schedule allows the user to scale the application in response to predictable load changes. The user can also configure the recurring schedule action which will follow the Linux cron format. If the user is setting a recurring event, it is required that the user specifies the Recurrence value in a cron format, end time not compulsory but recurrence will stop after this. and the Auto Scaling group for which the scaling activity is to be scheduled.
Question : Amazon Web Services provides INGRESS or EGRESS filtering on all incoming and outgoing data traffic.
Explanation: In computer networking, egress filtering is the practice of monitoring and potentially restricting the flow of information outbound from one network to another. Typically it is information from a private TCP IP computer network to the Internet that is controlled.
TCP IP packets that are being sent out of the internal network are examined via a router, firewall, or similar edge device. Packets that do not meet security policies are not allowed to leave they are denied "egress".
Egress filtering helps ensure that unauthorized or malicious traffic never leaves the internal network.
Amazon EC2. When you launched an instance we gave it a public IP address and a DNS hostname. You had the ability to create a Security Group for ingress filtering and attach it to the instance at launch time. Each instance could have just one public IP address, which could be an Elastic IP if desired. Later, we added private IP addresses and an internal DNS hostname to each instance. Let's call this platform "EC2-Classic" (that will be on the quiz, so remember it)
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Question : Amazon SQS (Simple Queue Service) guarantees delivery of AT LEAST message but cannot guarantee it will not create duplicates.
Explanation: Amazon SQS is engineered to provide at least once delivery of all messages in its queues. Although most of the time each message will be delivered to your application exactly once, you should design your system so that processing a message more than once does not create any errors or inconsistencies.
Explanation: The minimum message size is 1 byte (1 character). The maximum is 262,144 bytes (256 KB). To send messages larger than 256 KB, you can use the Amazon SQS Extended Client Library for Java. This library allows you to send an Amazon SQS message that contains a reference to a message payload in Amazon S3.