Question #51
Your company Is moving towards tracking web page users with a small tracking
Image loaded on each page Currently you are serving this image out of US-East, but are starting to get concerned about the time It takes to load the image for users on the west coast.
What are the two best ways to speed up serving this image? (Choose two.)
- A. Use Route 53’s Latency Based Routing and serve the image out of US-West-2 as well as US-East-1
- B. Serve the image out through CloudFront
- C. Serve the image out of S3 so that it isn’t being served oft of your web application tier
- D. Use EBS PIOPs to serve the image faster out of your EC2 instances
Correct Answer: AB
Cloudfront gets the image closer to the user and Route53 ensures the best connection based on network latency.
Question #52
If you want to launch Amazon Elastic Compute Cloud (EC2) Instances and assign each Instance a predetermined private IP address you should:
- A. Assign a group or sequential Elastic IP address to the instances
- B. Launch the instances in a Placement Group
- C. Launch the instances in the Amazon virtual Private Cloud (VPC).
- D. Use standard EC2 instances since each instance gets a private Domain Name Service (DNS) already
- E. Launch the Instance from a private Amazon Machine image (Mil)
Correct Answer: C
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/vpc-ip-addressing.html
Question #53
A customer has a web application that uses cookie Based sessions to track logged in users. It is deployed on
AWS using ELB and Auto Scaling. The customer observes that when load increases. Auto Scaling launches new Instances but the load on the easting Instances does not decrease, causing all existing users have a sluggish experience.
Which two answer choices independently describe a behavior that could be the cause of the sluggish user experience? (Choose two.)
- A. ELB’s normal behavior sends requests from the same user to the same backend instance
- B. ELB’s behavior when sticky sessions are enabled causes ELB to send requests in the same session to the same backend instance
- C. A faulty browser is not honoring the TTL of the ELB DNS name
- D. The web application uses long polling such as comet or websockets. Thereby keeping a connection open
Correct Answer: BD
Question #54
How can the domain’s zone apex for example “myzoneapexdomain com” be pointed towards an Elastic Load
Balancer?
- A. By using an AAAA record
- B. By using an A record
- C. By using an Amazon Route 53 CNAME record
- D. By using an Amazon Route 53 Alias record
Correct Answer: D
Alias resource record sets are virtual records that work like CNAME records. But they differ from CNAME records in that they are not visible to resolvers. Resolvers only see the A record and the resulting IP address of the target record. As such, unlike CNAME records, alias resource record sets are available to configure a zone apex (also known as a root domain or naked domain) in a dynamic environment.
Reference: http://docs.aws.amazon.com/govcloud-us/latest/UserGuide/setting-up-route53-zoneapex-elb.html
Question #55
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 a separate login ID but give the IAM users the same alias so that each one can login with their alias
- B. The organization should create each user in a separate region so that they have their own URL to login
- 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 groups. The user can login with their own group ID
Correct Answer: C
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 (-..
