AWS-Solution-Architect-Associate Exam
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Q231. Every user you create in the IAM system starts with _ _
A. full permissions
B. no permissions
C. partial permissions
Answer: B
Q232. Your company plans to host a large donation website on Amazon Web Services (AWS). You anticipate a large and undetermined amount of traffic that will create many database writes. To be certain that you do not drop any writes to a database hosted on AWS. Which service should you use?
A. Amazon RDS with provisioned IOPS up to the anticipated peak write throughput.
B. Amazon Simple Queue Service (SOS) for capturing the writes and draining the queue to write to the database.
C. Amazon EIastiCache to store the writes until the writes are committed to the database.
D. Amazon DynamoDB with provisioned write throughput up to the anticipated peak write throughput.
Answer: B
Explanation:
Amazon Simple Queue Service (Amazon SQS) offers a reliable, highly scalable hosted queue for storing messages as they travel between computers. By using Amazon SQS, developers can simply move data between distributed application components performing different tasks, without losing messages or requiring each component to be always available. Amazon SQS makes it easy to build a distributed, decoupled application, working in close conjunction with the Amazon Elastic Compute Cloud (Amazon EC2) and the other AWS infrastructure web services.
What can I do with Amazon SQS?
Amazon SQS is a web service that gives you access to a message queue that can be used to store messages while waiting for a computer to process them. This allows you to quickly build message queuing applications that can be run on any computer on the internet. Since Amazon SQS is highly scalable and you only pay for what you use, you can start small and grow your application as you wish, with no compromise on performance or reliability. This lets you focus on building sophisticated message-based applications, without worrying about how the messages are stored and managed.
You can use Amazon SQS with software applications in various ways. For example, you can: Integrate Amazon SQS with other AWS infrastructure web services to make applications more reliable and filexible.
Use Amazon SQS to create a queue of work where each message is a task that needs to be completed by a process. One or many computers can read tasks from the queue and perform them. Build a microservices architecture, using queues to connect your microservices.
Keep notifications of significant events in a business process in an Amazon SQS queue. Each event can have a corresponding message in a queue, and applications that need to be aware of the event can read and process the messages.
Q233. In Amazon Elastic Compute Cloud, which ofthe following is used for communication between instances in the same network (EC2-Classic or a VPC)?
A. Private IP addresses
B. Elastic IP addresses
C. Static IP addresses
D. Public IP addresses
Answer: A
Explanation:
A private IP address is an IP address that's not reachable over the Internet. You can use private IP addresses for communication between instances in the same network (EC2-Classic or a VPC). Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-instance-addressing.htmI
Q234. Can you move a Reserved Instance from one Availability Zone to another?
A. Yes, but each Reserved Instance is associated with a specific Region that cannot be changed.
B. Yes, only in US-West-2.
C. Yes, only in US-East-1.
D. No
Answer: A
Explanation:
Each Reserved Instance is associated with a specific Region, which is fixed for the lifetime of the reservation and cannot be changed. Each reservation can, however, be used in any of the available AZs within the associated Region.
Reference: https://aws.amazon.com/rds/faqs/
Q235. What does Amazon EC2 provide?
A. Virtual sewers in the Cloud.
B. A platform to run code (Java, PHP, Python), paying on an hourly basis.
C. Computer Clusters in the Cloud.
D. Physical sewers, remotely managed by the customer.
Answer: A
Q236. What does a "Domain" refer to in Amazon SWF?
A. A security group in which only tasks inside can communicate with each other
B. A special type of worker
C. A collection of related Workflows
D. The DNS record for the Amazon SWF service
Answer: C
Q237. After deploying a new website for a client on AWS, he asks if you can set it up so that if it fails it can be automatically redirected to a backup website that he has stored on a dedicated server elsewhere. You are wondering whether Amazon Route 53 can do this. Which statement below is correct in regards to Amazon Route 53?
A. Amazon Route 53 can't help detect an outage. You need to use another service.
B. Amazon Route 53 can help detect an outage of your website and redirect your end users to alternate locations.
C. Amazon Route 53 can help detect an outage of your website but can't redirect your end users to alternate locations.
D. Amazon Route 53 can't help detect an outage of your website, but can redirect your end users to alternate locations.
Answer: B
Explanation:
With DNS Failover, Amazon Route 53 can help detect an outage of your website and redirect your end users to alternate locations where your application is operating properly.
Reference:
http://aws.amazon.com/about-aws/whats-new/2013/02/11/announcing-dns-faiIover-for-route-53/
Q238. You would like to create a mirror image of your production environment in another region for disaster recovery purposes. Which of the following AWS resources do not need to be recreated in the second region? (Choose 2 answers)
A. Route 53 Record Sets
B. IM Roles
C. Elastic IP Addresses (EIP)
D. EC2 Key Pairs
E. Launch configurations
F. Security Groups
Answer: A, C
Explanation:
Reference:
http://tech.com/wp-content/themes/optimize/download/AWSDisaster_Recovery.pdf (page 6)
Q239. A major finance organisation has engaged your company to set up a large data mining application. Using AWS you decide the best service for this is Amazon Elastic MapReduce(EMR) which you know uses Hadoop. Which of the following statements best describes Hadoop?
A. Hadoop is 3rd Party software which can be installed using AMI
B. Hadoop is an open source python web framework
C. Hadoop is an open source Java software framework
D. Hadoop is an open source javascript framework
Answer: C
Explanation:
Amazon EMR uses Apache Hadoop as its distributed data processing engine.
Hadoop is an open source, Java software framework that supports data-intensive distributed applications running on large clusters of commodity hardware. Hadoop implements a programming model named "MapReduce," where the data is dMded into many small fragments of work, each of which may be executed on any node in the cluster.
This framework has been widely used by developers, enterprises and startups and has proven to be a reliable software platform for processing up to petabytes of data on clusters of thousands of commodity machines.
Reference: http://aws.amazon.com/elasticmapreduce/faqs/
Q240. Security groups act like a firewall at the instance level, whereas _ are an additional layer of security that act at the subnet level.
A. DB Security Groups
B. VPC Security Groups
C. network ACLs
Answer: C