By default, Amazon Cognito maintains the last-written version of the data. You can override this behavior and resolve data conflicts programmatically. In addition, push synchronization allows you to use Amazon Cognito to send a silent notification to all devices associated with an identity to notify them that
new data is available.
A. get
B. post
C. pull
D. push
Answer: D
Explanation: By default, Amazon Cognito maintains the last-written version of the data. You can override this behavior and resolve data conflicts programmatically. In addition, push synchronization allows you to use Amazon Cognito to send a silent push notification to all devices associated with an identity to notify them that new data is available.
An IAM user is trying to perform an action on an object belonging to some other root account’s bucket. Which of the below mentioned options will AWS S3 not verify?
A. The object owner has provided access to the IAM user
B. Permission provided by the parent of the IAM user on the bucket
C. Permission provided by the bucket owner to the IAM user
D. Permission provided by the parent ofthe IAM user
Answer: B
Explanation: If the IAM user is trying to perform some action on the object belonging to another AWS user’s bucket, S3 will verify whether the owner of the IAM user has given sufficient permission to him. It also verifies the policy for the bucket as well as the policy defined by the object owner.
An organization is planning to host a Wordpress blog as well a joomla CMS on a single instance launched with VPC. The organization wants to have separate domains for each application and assign them using Route 53. The organization may have about ten instances each with two applications as mentioned above. While launching the instance, the organization configured two separate network interfaces (primary + ENI) and wanted to have two elastic IPs for that instance. It was suggested to use a public IP from AWS instead of an elastic IP as the number of elastic IPs is restricted. What action will you recommend to the organization?
A. I agree with the suggestion but will prefer that the organization should use separate subnets with each ENI for different public IPs.
B. I do not agree as it is required to have only an elastic IP since an instance has more than one ENI and AWS does not assign a public IP to an instance with multiple ENIs.
C. I do not agree as AWS VPC does not attach a public IP to an ENI; so the user has to use only an elastic IP only.
D. I agree with the suggestion and it is recommended to use a public IP from AWS since the organization is going to use DNS with Route 53.
Answer: B
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. It enables the user to launch AWS resources into a virtual network that the user has defined. An Elastic Network Interface (ENI) is a virtual network interface that the user can attach to an instance in a VPC.
The user can attach up to two ENIs with a single instance. However, AWS cannot assign a public IP when there are two ENIs attached to a single instance. It is recommended to assign an elastic IP in this scenario. If the organization wants more than 5 E|Ps they can request AWS to increase the number.
An organization has 4 people in the IT operations team who are responsible to manage the AWS infrastructure. The organization wants to setup that each user will have access to launch and manage an instance in a zone which the other user cannot modify. Which of the below mentioned options is the best solution to set this up?
A. Create four AWS accounts and give each user access to a separate account.
B. Create an IAM user and allow them permission to launch an instance of a different sizes only.
C. Create four IAM users and four VPCs and allow each IAM user to have access to separate VPCs.
D. Create a VPC with four subnets and allow access to each subnet for the indMdual IAM use
Answer: D
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. The user can create subnets as per the requirement within a VPC. The VPC also work with IAM and the organization can create IAM users who have access to various VPC services. The organization can setup access for the IAM user who can modify the security groups of the VPC. The sample policy is given below:
A user is planning to host a web server as well as an app server on a single EC2 instance which is a part of the public subnet of a VPC. How can the user setup to have two separate public IPs and separate security groups for both the application as well as the web server?
A. Launch VPC with two separate subnets and make the instance a part of both the subnets.
B. Launch a VPC instance with two network interface
C. Assign a separate security group and elastic IP to them.
D. Launch a VPC instance with two network interface
E. Assign a separate security group to each and AWS will assign a separate public IP to them.
F. Launch a VPC with ELB such that it redirects requests to separate VPC instances of the public subne
Answer: B
Explanation: If you need to host multiple websites(with different IPs) on a single EC2 instance, the following is the suggested method from AWS. Launch a VPC instance with two network interfaces
Assign elastic IPs from VPC EIP pool to those interfaces (Because, when the user has attached more than one network interface with an instance, AWS cannot assign public IPs to them.)
Assign separate Security Groups if separate Security Groups are needed
You have subscribed to the AWS Business and Enterprise support plan. Your business has a backlog of problems, and you need about 20 of your IAM users to open technical support cases. How many users can open technical support cases under the AWS Business and Enterprise support plan?
A. 5 users
B. 10 users
C. Unlimited
D. 1 user
Answer: C
Explanation: In the context of AWS support, the Business and Enterprise support plans allow an unlimited number of users to open technical support cases (supported by AWS Identity and Access Management (IAM)). Reference: https://aws.amazon.com/premiumsupport/faqs/
NEW QUESTION 8
How many g2.2xIarge on-demand instances can a user run in one region without taking any limit increase approval from AWS?
A. 20
B. 2
C. 5
D. 10
Answer: C
Explanation: Generally AWS EC2 allows running 20 on-demand instances and 100 spot instances at a time. This limit can be increased by requesting at https://aws.amazon.com/contact-us/ec2-request. Excluding certain types of instances, the limit is lower than mentioned above. For g2.2xIarge, the user can run only 5
lV|apMySite is setting up a web application in the AWS VPC. The organization has decided to use an AWS RDS instead of using its own DB instance for HA and DR requirements.
The organization also wants to secure RDS access. How should the web application be setup with RDS?
A. Create a VPC with one public and one private subne
B. Launch an application instance in the public subnet while RDS is launched in the private subnet.
C. Setup a public and two private subnets in different AZs within a VPC and create a subnet grou
D. Launch RDS with that subnet group.
E. Create a network interface and attach two subnets to i
F. Attach that network interface with RDS while launching a DB instance.
G. Create two separate VPCs and launch a Web app in one VPC and RDS in a separate VPC and connect them with VPC peering.
Answer: B
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. It enables the user to launch AWS resources, such as RDS into a virtual network that the user has defined. Subnets are segments of a VPC's IP address range that the user can designate to a group of VPC resources based on the security and operational needs.
A DB subnet group is a collection of subnets (generally private) that a user can create in a VPC and assign to the RDS DB instances. A DB subnet group allows the user to specify a particular VPC when creating the DB instances. Each DB subnet group should have subnets in at least two Availability Zones in a given region.
When does an AWS Data Pipeline terminate the AWS Data Pipeline-managed compute resources?
A. AWS Data Pipeline terminates AWS Data Pipeline-managed compute resources every 2 hours.
B. When the final actMty that uses the resources is running
C. AWS Data Pipeline terminates AWS Data Pipeline-managed compute resources every 12 hours.
D. When the final actMty that uses the resources has completed successfully orfailed
Answer: D
Explanation: Compute resources will be provisioned by AWS Data Pipeline when the first actMty for a scheduled time that uses those resources is ready to run, and those instances will be terminated when the final actMty that uses the resources has completed successfully or failed.
The Principal element of an IAM policy refers to the specific entity that should be allowed or denied permission, whereas the translates to everyone except the specified entity.
A. NotPrincipa|
B. Vendor
C. Principal
D. Action
Answer: A
Explanation: The element NotPrincipa| that is included within your IAM policy statements allows you to specify an exception to a list of principals to whom the access to a specific resource is either allowed or denied. Use the NotPrincipaI element to specify an exception to a list of principals. For example, you can deny access to all principals except the one named in the NotPrincipa| element.
Doug has created a VPC with CIDR 10.201.0.0/16 in his AWS account. In this VPC he has created a public subnet with CIDR block 10.201.31.0/24. While launching a new EC2 from the console, he is not able to assign the private IP address 10.201.31.6 to this instance. Which is the most likely reason for this issue?
A. Private address IP 10.201.31.6 is currently assigned to another interface.
B. Private IP address 10.201.31.6 is reserved by Amazon for IP networking purposes.
C. Private IP address 10.201.31.6 is blocked via ACLs in Amazon infrastructure as a part of platform security.
D. Private IP address 10.201.31.6 is not part of the associated subnet's IP address rang
The Statement element, of an AWS IAM policy, contains an array of indMdual statements. Each indMdual statement is a(n) block enclosed in braces { }.
A. XML
B. JavaScript
C. JSON
D. AJAX
Answer: C
Explanation: The Statement element, of an IAM policy, contains an array of indMdual statements. Each indMdual statement is a JSON block enclosed in braces {
If no explicit deny is found while applying IAM's Policy Evaluation Logic, the enforcement code looks for any instructions that would apply to the request.
A. "cancel"
B. "suspend"
C. "a||ow"
D. "vaIid"
Answer: C
Explanation: If an explicit deny is not found among the applicable policies for a specific request, IAM's Policy Evaluation Logic checks for any "aIIow" instructions to check if the request can be successfully completed.
An organization is hosting a scalable web application using AWS. The organization has configured ELB and Auto Scaling to make the application scalable. Which of the below mentioned statements is not required to be followed for ELB when the application is planning to host a web application on VPC?
A. The ELB and all the instances should be in the same subnet.
B. Configure the security group rules and network ACLs to allow traffic to be routed between the subnets in the VPC.
C. The internet facing ELB should have a route table associated with the internet gateway.
D. The internet facing ELB should be only in a public subne
Answer: A
Explanation: Amazon Virtual Private Cloud (Amazon VPC) allows the user to define a virtual networking environment in a private, isolated section of the Amazon Web Services (AWS) cloud. The user has complete control over the virtual networking environment. Within this virtual private cloud, the user can launch AWS resources, such as an ELB, and EC2 instances. There are two ELBs available with VPC: internet facing and internal (private) ELB. For the internet facing ELB it is required that the ELB should be in a public subnet. After the user creates the public subnet, he should ensure to associate the route table of the public subnet with the internet gateway to enable the load balancer in the subnet to connect with the internet. The ELB and instances can be in a separate subnet. However, to allow communication between the instance and the
An organization (account ID 123412341234) has configured the IAM policy to allow the user to modify his credentials. What will the below mentioned statement allow the user to perform?
A. Allow the IAM user to update the membership of the group called TestingGroup
B. The IAM policy will throw an error due to an invalid resource name
C. The IAM policy will allow the user to subscribe to any IAM group
D. Allow the IAM user to delete the TestingGroup
Answer: A
Explanation: AWS Identity and Access Management is a web service which allows organizations to manage users and user permissions for various AWS services. If the organization (account ID 123412341234) wants their users to manage their subscription to the groups, they should create a relevant policy for that. The below mentioned policy allows the respective IAM user to update the membership of the group called MarketingGroup.
A user has configured EBS volume with PIOPS. The user is not experiencing the optimal throughput. Which of the following could not be factor affecting I/O performance of that EBS volume?
A. EBS bandwidth of dedicated instance exceeding the PIOPS
B. EBS volume size
C. EC2 bandwidth
D. Instance type is not EBS optimized
Answer: B
Explanation: If the user is not experiencing the expected IOPS or throughput that is provisioned, ensure that the EC2 bandwidth is not the limiting factor, the instance is EBS-optimized (or include 10 Gigabit network connectMty) and the instance type EBS dedicated bandwidth exceeds the IOPS more than he has provisioned.
How can multiple compute resources be used on the same pipeline in AWS Data Pipeline?
A. You can use multiple compute resources on the same pipeline by defining multiple cluster objects in your definition file and associating the cluster to use for each actMty via its runsOn field.
B. You can use multiple compute resources on the same pipeline by defining multiple cluster definition files.
C. You can use multiple compute resources on the same pipeline by defining multiple clusters for your actMty.
D. You cannot use multiple compute resources on the same pipelin
Answer: A
Explanation: MuItipIe compute resources can be used on the same pipeline in AWS Data Pipeline by defining multiple cluster objects in your definition file and associating the cluster to use for each actMty via its runsOn field, which allows pipelines to combine AWS and on-premise resources, or to use a mix of instance types for their actMties.
The two policies that you attach to an IAM role are the access policy and the trust policy. The trust policy identifies who can assume the role and grants the permission in the AWS Lambda account principal by adding the action.
A. aws:AssumeAdmin
B. Iambda:InvokeAsync
C. sts:|nvokeAsync
D. sts:AssumeRoIe
Answer: D
Explanation: The two policies that you attach to an IAM role are the access policy and the trust policy.
Remember that adding an account to the trust policy of a role is only half of establishing the trust relationship. By default, no users in the trusted accounts can assume the role until the administrator for that account grants the users the permission to assume the role by adding the Amazon Resource Name (ARN) of the role to an Allow element for the sts:AssumeRoIe action.
The MySecureData company has five branches across the globe. They want to expand their data centers such that their web server will be in the AWS and each branch would have their own database in the local data center. Based on the user login, the company wants to connect to the data center. How can MySecureData company implement this scenario with the AWS VPC?
A. Create five VPCs with the public subnet for the app server and setup the VPN gateway for each VPN to connect them indMdually.
B. Use the AWS VPN CIoudHub to communicate with multiple VPN connections.
C. Use the AWS CIoudGateway to communicate with multiple VPN connections.
D. It is not possible to connect different data centers from a single VPC.
Answer: B
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. The user can create subnets as per the requirement within a VPC. If the user wants to connect VPC from his own data centre, he can setup a public and VPN only subnet which uses hardware VPN access to connect with his data centre. If the organization has multiple VPN connections, he can provide secure communication between sites using the AWS VPN CIoudHub.
The VPN CIoudHub operates on a simple hub-and-spoke model that the user can use with or without a VPC. This design is suitable for customers with multiple branch offices and existing internet connections who would like to implement a convenient, potentially low-cost hub-and-spoke model for primary or backup connectMty between remote offices.
Regarding Amazon SNS, you can send notification messages to mobile devices through any of the following supported push notification services, EXCEPT:
A. Microsoft Windows Mobile Messaging (MWMM)
B. Google Cloud Messaging for Android (GCM)
C. Amazon Device Messaging (ADM)
D. Apple Push Notification Service (APNS)
Answer: A
Explanation: In Amazon SNS, you have the ability to send notification messages directly to apps on mobile devices. Notification messages sent to a mobile
endpoint can appear in the mobile app as message alerts, badge updates, or even sound alerts. Microsoft Windows Mobile Messaging (MWMM) doesn’t exist and is not supported by Amazon SNS.
Which of the following is NOT an advantage of using AWS Direct Connect?
A. AWS Direct Connect provides users access to public and private resources by using two different connections while maintaining network separation between the public and private environments.
B. AWS Direct Connect provides a more consistent network experience than Internet-based connections.
C. AWS Direct Connect makes it easy to establish a dedicated network connection from your premises to AWS.
D. AWS Direct Connect reduces your network cost
Answer: A
Explanation: AWS Direct Connect makes it easy to establish a dedicated network connection from your premises to AWS. Using AWS Direct Connect, you can establish private connectMty between AWS and your datacenter, office, or colocation environment, which in many cases can reduce your network costs, increase bandwidth throughput, and provide a more consistent network experience than Internet-based connections.
By using industry standard 802.1q VLANs, this dedicated connection can be partitioned into multiple virtual interfaces. This allows you to use the same connection to access public resources such as objects stored in Amazon S3 using public IP address space, and private resources such as Amazon EC2
instances running within an Amazon Virtual Private Cloud (VPC) using private IP space, while maintaining network separation between the public and private environments.
An organization is setting up an application on AWS to have both High Availabilty (HA) and Disaster Recovery (DR). The organization wants to have both Recovery point objective (RPO) and Recovery time objective (RTO) of 10 minutes. Which of the below mentioned service configurations does not help the organization achieve the said RPO and RTO?
A. Take a snapshot of the data every 10 minutes and copy it to the other region.
B. Use an elastic IP to assign to a running instance and use Route 53 to map the user’s domain with that IP.
C. Create ELB with multi- region routing to allow automated failover when required.
D. Use an AMI copy to keep the AMI available in other region
Answer: C
Explanation: AWS provides an on demand, scalable infrastructure. AWS EC2 allows the user to launch On-Demand instances and the organization should create an AMI of the running instance. Copy the AMI to another region to enable Disaster Recovery (DR) in case of region failure. The organization should also use EBS for persistent storage and take a snapshot every 10 minutes to meet Recovery time objective (RTO). They should also setup an elastic IP and use it with Route 53 to route requests to the same IP.
When one of the instances fails the organization can launch new instances and assign the same EIP to a new instance to achieve High Availability (HA). The ELB works only for a particular region and does not route requests across regions.
An organization is setting up a backup and restore system in AWS of their in premise system. The organization needs High AvaiIabiIity(HA) and Disaster Recovery(DR) but is okay to have a longer recovery time to save costs. Which of the below mentioned setup options helps achieve the objective of cost saving as well as DR in the most effective way?
A. Setup pre- configured sewers and create AMIs.. Use EIP and Route 53 to quickly switch over to AWS from in premise.
B. Setup the backup data on S3 and transfer data to S3 regularly using the storage gateway.
C. Setup a small instance with AutoScaIing; in case of DR start diverting all the load to AWS from on premise.
D. Replicate on premise DB to EC2 at regular intervals and setup a scenario similar to the pilot ligh
Answer: B
Explanation: AWS has many solutions for Disaster Recovery(DR) and High AvaiIabiIity(HA). When the organization wants to have HA and DR but are okay to have a longer recovery time they should select the option backup and restore with S3. The data can be sent to S3 using either Direct Connect, Storage Gateway or over the internet.
The EC2 instance will pick the data from the S3 bucket when started and setup the environment. This process takes longer but is very cost effective due to the low pricing of S3. In all the other options, the EC2 instance might be running or there will be AMI storage costs.
Thus, it will be a costlier option. In this scenario the organization should plan appropriate tools to take a backup, plan the retention policy for data and setup
What feature of the load balancing service attempts to force subsequent connections to a service to be redirected to the same node as long as it is online?
A. Node balance
B. Session retention
C. Session multiplexing
D. Session persistence
Answer: D
Explanation: Session persistence is a feature of the load balancing service. It attempts to force subsequent connections to a service to be redirected to the same node as long as it is online.
In IAM, which of the following is true of temporary security credentials?
A. Once you issue temporary security credentials, they cannot be revoked.
B. None of these are correct.
C. Once you issue temporary security credentials, they can be revoked only when the virtual MFA device is used.
D. Once you issue temporary security credentials, they can be revoke
Answer: A
Explanation: Temporary credentials in IAM are valid throughout their defined duration of time and hence can't be revoked. However, because permissions are evaluated each time an AWS request is made using the credentials, you can achieve the effect of revoking the credentials by changing the permissions for the credentials even after they have been issued. Reference:
An organization has created 5 IAM users. The organization wants to give them the same login ID but different passwords. How can the organization achieve this?
A. The organization should create each user in a separate region so that they have their own URL to login
B. The organization should create a separate login ID but give the IAM users the same alias so that each one can login with their alias
C. It is not possible to have the same login ID for multiple IAM users of the same account
D. The organization should create various groups and add each user with the same login ID to different group
E. The user can login with their own group ID
Answer: C
Explanation: AWS Identity and Access Management is a web service which allows organizations to manage users and user permissions for various AWS services. Whenever the organization is creating an IAM user, there should be a unique ID for each user. It is not possible to have the same login ID for multiple users. The names of users, groups, roles, instance profiles must be alphanumeric, including the following common characters: plus (+), equal (=), comma (,), period (.), at (@), and dash (-).
An organization is planning to setup a management network on the AWS VPC. The organization is trying to secure the webserver on a single VPC instance such that it allows the internet traffic as well as the back-end management traffic. The organization wants to make so that the back end management network
interface can receive the SSH traffic only from a selected IP range, while the internet facing webserver will have an IP address which can receive traffic from all the internet IPs.
How can the organization achieve this by running web server on a single instance?
A. It is not possible to have two IP addresses for a single instance.
B. The organization should create two network interfaces with the same subnet and security group to assign separate IPs to each network interface.
C. The organization should create two network interfaces with separate subnets so one instance can have two subnets and the respective security groups for
controlled access.
D. The organization should launch an instance with two separate subnets using the same network interface which allows to have a separate CIDR as well as security groups.
Answer: C
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. It enables the user to launch AWS resources into a virtual network that the user has defined. An Elastic Network Interface (ENI) is a virtual network interface that the user can attach to an instance in a VPC.
The user can create a management network using two separate network interfaces. For the present scenario it is required that the secondary network interface on the instance handles the public facing traffic and the primary network interface handles the back-end management traffic and it is connected to a separate subnet in the VPC that has more restrictive access controls. The public facing interface, which may or may not be behind a load balancer, has an associated security group to allow access to the server from the internet while the private facing interface has an associated security group allowing SSH access only from an allowed range of IP addresses either within the VPC or from the internet, a private subnet within the VPC or a virtual private gateway.
An organization is purchasing licensed software. The software license can be registered only to a specific MAC Address. The organization is going to host the software in the AWS environment. How can the organization fulfil the license requirement as the MAC address changes every time an instance is started/stopped/terminated?
A. It is not possible to have a fixed MAC address with AWS.
B. The organization should use VPC with the private subnet and configure the MAC address with that subnet
C. The organization should use VPC with an elastic network interface which will have a fixed MAC Address.
D. The organization should use VPC since VPC allows to configure the MAC address for each EC2 instance.
Answer: C
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. It enables the user to launch AWS resources into a virtual network that the user has defined. An Elastic Network Interface (ENI) is a virtual network interface that the user can attach to an instance in a VPC. An ENI can include attributes such as: a primary private IP address, one or more secondary private IP addresses, one elastic IP address per private IP address, one public IP address, one or more security groups, a MAC address, a source/destination check flag, and a description.
The user can create a network interface, attach it to an instance, detach it from an instance, and attach it to another instance. The attributes of a network interface follow the network interface as it is attached or detached from an instance and reattached to another instance. Thus, the user can maintain a fixed MAC using the network interface.
ExamKiIIer has three separate departments and each department has their own AWS accounts. The HR department has created a file sharing site where all the on roll empIoyees’ data is uploaded. The Admin department uploads data about the employee presence in the office to their DB hosted in the VPC. The Finance department needs to access data from the HR department to know the on roll employees to calculate the salary based on the number of days that an employee is present in the office.
How can ExamKiI|er setup this scenario?
A. It is not possible to configure VPC peering since each department has a separate AWS account.
B. Setup VPC peering for the VPCs of Admin and Finance.
C. Setup VPC peering for the VPCs of Finance and HR as well as between the VPCs of Finance and Admin.
D. Setup VPC peering for the VPCs of Admin and HR
Answer: C
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. It enables the user to launch AWS resources into a virtual network that the user has defined. A VPC peering connection allows the user to route traffic between the peer VPCs using private IP addresses as if they are a part of the same network. This is helpful when one VPC from the same or different AWS account wants to connect with resources of the other VPC.
An organization is undergoing a security audit. The auditor wants to view the AWS VPC configurations as the organization has hosted all the applications in the AWS VPC. The auditor is from a remote place and wants to have access to AWS to view all the VPC records.
How can the organization meet the expectations of the auditor without compromising on the security of their AWS infrastructure?
A. The organization should not accept the request as sharing the credentials means compromising on security.
B. Create an IAM role which will have read only access to all EC2 services including VPC and assign that role to the auditor.
C. Create an IAM user who will have read only access to the AWS VPC and share those credentials with the auditor.
D. The organization should create an IAM user with VPC full access but set a condition that will not allow to modify anything if the request is from any IP other than the organization’s data center.
Answer: C
Explanation: A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. The user can create subnets as per the requirement within a VPC. The VPC also works with IAM and the organization can create IAM users who have access to various VPC services.
If an auditor wants to have access to the AWS VPC to verify the rules, the organization should be careful before sharing any data which can allow making updates to the AWS infrastructure. In this scenario it is recommended that the organization creates an IAM user who will have read only access to the VPC. Share the above mentioned credentials with the auditor as it cannot harm the organization. The sample policy is given below:
An organization is planning to create a secure scalable application with AWS VPC and ELB. The organization has two instances already running and each instance has an ENI attached to it in addition to a primary network interface. The primary network interface and additional ENI both have an elastic IP attached to it.
If those instances are registered with ELB and the organization wants ELB to send data to a particular EIP of the instance, how can they achieve this?
A. The organization should ensure that the IP which is required to receive the ELB traffic is attached to a primary network interface.
B. It is not possible to attach an instance with two EN|s with ELB as it will give an IP conflict error.
C. The organization should ensure that the IP which is required to receive the ELB traffic is attached to an additional ENI.
D. It is not possible to send data to a particular IP as ELB will send to any one EI
Answer: A
Explanation: Amazon Virtual Private Cloud (Amazon VPC) allows the user to define a virtual networking environment in a private, isolated section of the Amazon Web Services (AWS) cloud. The user has complete control over the virtual networking environment. Within this virtual private cloud, the user can launch AWS resources, such as an ELB, and EC2 instances. There are two ELBs available with VPC: internet facing and internal (private) ELB. For the internet facing ELB it is required that the ELB should be in a public subnet.
When the user registers a multi-homed instance (an instance that has an Elastic Network Interface (ENI) attached) with a load balancer, the load balancer will route the traffic to the IP address of the primary network interface (eth0).
A user has configured EBS volume with PIOPS. The user is not experiencing the optimal throughput. Which of the following could not be factor affecting I/O performance of that EBS volume?
A. EBS bandwidth of dedicated instance exceeding the PIOPS
B. EC2 bandwidth
C. EBS volume size
D. Instance type is not EBS optimized
Answer: C
Explanation: If the user is not experiencing the expected IOPS or throughput that is provisioned, ensure that the EC2 bandwidth is not the limiting factor, the instance is EBS-optimized (or include 10 Gigabit network
