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Q73. Can a user associate and use his own DNS with ELB instead ofthe DNS provided by AWS ELB?
A. Yes, by creating a CNAME with the existing domain name provider
B. Yes, by configuring DNS in the AWS Console
C. No
D. Yes, only through Route 53 by mapping ELB and DNS
Answer: A
Explanation:
The AWS ELB allows mapping a custom domain name with ELB. The user can map ELB with DNS in two ways: 1) By creating CNAME with the existing domain name service provider or 2) By creating a record with Route 53.
Reference:
http://docs.aws.amazon.com/E|asticLoadBaIancing/latest/DeveIoperGuide/using-domain-names-with-elb. html
Q74. How can a user configure three termination policies for the AutoScaIing group?
A. Define multiple policies in random order
B. Define multiple policies in the ordered list
C. Keep updating the AutoScaIing group with each policy
D. The user cannot specify more than two policies for AutoScaIing
Answer: B
Explanation:
To configure the Auto Scaling termination policy, the user can either specify any one of the policies as a standalone policy or list multiple policies in an ordered list. The policies are executed in the order that they are listed.
Reference: http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/us-termination-policy.html
Q75. In DynamoDB, if you create a table and request 10 units of write capacity and 200 units of read capacity of provisioned throughput, how much would you be charged in US East (Northern Virginia) Region?
A. $0.05 per hour
B. $0.10 per hour
C. $0.03 per hour
D. $0.15 per hour
Answer: A
Explanation:
To understand pricing in DynamoDB, consider the following example. If you create a table and request 10 units of write capacity and 200 units of read capacity of provisioned throughput, you would be charged:
$0.01 + (4 x $0.01) = $0.05 per hour
Reference: http://aws.amazon.com/dynamodb/pricing/
Q76. A user is planning to use EBS for his DB requirement. The user already has an EC2 instance running in the VPC private subnet. How can the user attach the EBS volume to a running instance?
A. The user must create EBS within the same VPC and then attach it to a running instance.
B. The user can create EBS in the same zone as the subnet of instance and attach that EBS to instance.
C. It is not possible to attach an EBS to an instance running in VPC until the instance is stopped.
D. The user can specify the same subnet while creating EBS and then attach it to a running instance.
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. The VPC is always specific to a region. The user can create a VPC which can span multiple Availability Zones by adding one or more subnets in each Availability Zone.
The instance launched will always be in the same availability zone of the respective subnet. When creating an EBS the user cannot specify the subnet or VPC. However, the user must create the EBS in the same zone as the instance so that it can attach the EBS volume to the running instance.
Reference: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.htm|#VPCSubnet
Q77. A user has configured ELB. Which of the below mentioned protocols the user can configure for ELB health checks while setting up ELB?
A. All of the options
B. TCP
C. HTTPS
D. SSL
Answer: A
Explanation:
An ELB performs a health check on its instances to ensure that it diverts traffic only to healthy instances. The ELB can perform a health check on HTTP, HTTPS, TCP and SSL protocols.
Reference: http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/Deve|operGuide/Welcome.html
Q78. A user is configuring the HTTPS protocol on a front end ELB and the SSL protocol for the back-end listener in ELB. What will ELB do?
A. It will allow you to create the configuration, but the instance will not pass the health check
B. Receives requests on HTTPS and sends it to the back end instance on SSL
C. It will not allow you to create this configuration
D. It will allow you to create the configuration, but ELB will not work as expected
Answer: C
Explanation:
If a user is configuring HTTPS on the front end and TCP on the back end, ELB will not allow saving these listeners and will respond with the message.
"Load Balancer protocol is an application layer protocol, but instance protocol is not. Both the Load Balancer protocol and the instance protocol should be at the same layer. Please fix."
Reference:
http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/DeveIoperGuide/elb-troubleshooting.htmI
Q79. A user has an S3 object in the US Standard region with the content "coIor=red". The user updates the object with the content as "coIor="white". If the user tries to read the value 1 minute after it was uploaded, what will S3 return?
A. It will return "coIor=white"
B. It will return "coIor=red"
C. It will return an error saying that the object was not found
D. It may return either "coIor=red" or "color=white" i.e. any of the value
Answer: D
Explanation:
AWS S3 follows the eventual consistent model in the US Standard Region. Once the object is updated it
may return the new value or the old value based on whether all the content is replicated across multiple servers until it becomes consistent (eventual).
Reference: http://docs.aws.amazon.com/AmazonS3/Iatest/dev/Introduction.htmI
Q80. Which Amazon service is not used by Elastic Beanstalk?
A. Amazon S3
B. Amazon ELB
C. Auto scaling
D. Amazon EMR
Answer: D
Explanation:
Elastic Beanstalk leverages AWS services such as Amazon Elastic Cloud Compute (Amazon EC2), Amazon Simple Storage Service (Amazon S3), Amazon Simple Notification Service (Amazon SNS), Elastic Load Balancing and Auto Scaling to deliver the same highly reliable, scalable, and cost-effective infrastructure that hundreds of thousands of businesses depend on today.
Reference: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/\NeIcome.html