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Q1. Which of the following features are provided by Amazon EC2?
A. Exadata Database Machine, Optimized Storage Management, Flashback Technology, and Data Warehousing
B. Instances, Amazon Machine Images (AMIs), Key Pairs, Amazon EBS Volumes, Firewall, Elastic IP address, Tags, and Virtual Private Clouds (VPCs)
C. Real Application Clusters (RAC), Elasticache Machine Images (EMIs), Data Warehousing, Flashback Technology, Dynamic IP address
D. Exadata Database Machine, Real Application Clusters (RAC), Data Guard, Table and Index Partitioning, and Data Pump Compression
Answer: B
Explanation:
Amazon EC2 provides the following features:
· Virtual computing environments, known as instances;
· Pre-configured templates for your instances, known as Amazon Nlachine Images (AMIs), that package the bits you need for your server (including the operating system and additional software)
· Various configurations of CPU, memory, storage, and networking capacity for your instances, known as instance types
· Secure login information for your instances using key pairs (AWS stores the public key, and you store the private key in a secure place)
· Storage volumes for temporary data that's deleted when you stop or terminate your instance, known as instance store volumes
· Persistent storage volumes for your data using Amazon Elastic Block Store (Amazon EBS), known as Amazon EBS volumes
· MuItipIe physical locations for your resources, such as instances and Amazon EBS volumes, known as regions and Availability Zones
· A firewall that enables you to specify the protocols, ports, and source IP ranges that can reach your instances using security groups
· Static IP addresses for dynamic cloud computing, known as Elastic IP addresses
· Metadata, known as tags, that you can create and assign to your Amazon EC2 resources
· Virtual networks you can create that are logically isolated from the rest of the AWS cloud, and that you can optionally connect to your own network, known as virtual private clouds (VPCs).
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts.html
Q2. A web company is looking to implement an intrusion detection and prevention system into their deployed VPC. This platform should have the ability to scale to thousands of instances running inside of the VPC, How should they architect t heir solution to achieve these goals?
A. Configure an instance with monitoring software and the elastic network interface (ENI) set to promiscuous mode packet sniffing to see an traffic across the VPC,
B. Create a second VPC and route all traffic from the primary application VPC through the second VPC where the scalable virtualized IDS/IPS platform resides.
C. Configure servers running in the VPC using the host-based 'route' commands to send all traffic through the platform to a scalable virtualized IDS/IPS.
D. Configure each host with an agent that collects all network traffic and sends that traffic to the IDS/IPS platform for inspection.
Answer: C
Q3. Through which of the following interfaces is AWS Identity and Access Management available?
A) AWS Management Console
B) Command line interface (CLI}
C) IAM Query API
D) Existing libraries
A. Only through Command line interface (CLI )
B. A, Band C
C. A and C
D. All of the above
Answer: D
Q4. After you recommend Amazon Redshift to a client as an alternative solution to paying data warehouses to analyze his data, your client asks you to explain why you are recommending Redshift. Which of the following would be a reasonable response to his request?
A. It has high performance at scale as data and query complexity grows.
B. It prevents reporting and analytic processing from interfering with the performance of OLTP workloads.
C. You don't have the administrative burden of running your own data warehouse and dealing with setup, durability, monitoring, scaling, and patching.
D. All answers listed are a reasonable response to his QUESTION
Answer: D
Explanation:
Amazon Redshift delivers fast query performance by using columnar storage technology to improve I/O efficiency and parallelizing queries across multiple nodes. Redshift uses standard PostgreSQL JDBC and ODBC drivers, allowing you to use a wide range of familiar SQL clients. Data load speed scales linearly with cluster size, with integrations to Amazon S3, Amazon DynamoDB, Amazon Elastic MapReduce,
Amazon Kinesis or any SSH-enabled host.
AWS recommends Amazon Redshift for customers who have a combination of needs, such as: High performance at scale as data and query complexity grows
Desire to prevent reporting and analytic processing from interfering with the performance of OLTP workloads
Large volumes of structured data to persist and query using standard SQL and existing BI tools Desire to the administrative burden of running one's own data warehouse and dealing with setup, durability, monitoring, scaling and patching
Reference: https://aws.amazon.com/running_databases/#redshift_anchor
Q5. Name the disk storage supported by Amazon Elastic Compute Cloud (EC2).
A. None of these
B. Amazon AppStream store
C. Amazon SNS store
D. Amazon Instance Store
Answer: D
Explanation:
Amazon EC2 supports the following storage options: Amazon Elastic Block Store (Amazon EBS) Amazon EC2 Instance Store Amazon Simple Storage Service (Amazon S3)
Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/Storage.html
Q6. Can I delete a snapshot of the root device of an EBS volume used by a registered AMI?
A. Only via API
B. Only via Console
C. Yes
D. No
Answer: C
Q7. You are running a news website in the eu-west-1 region that updates every 15 minutes. The website has a world-wide audience it uses an Auto Scaling group behind an Elastic Load Balancer and an
Amazon RDS database Static content resides on Amazon 53, and is distributed through Amazon CIoudFront. Your Auto Scaling group is set to trigger a scale up event at 60% CPU utilization, you use an Amazon RDS extra large DB instance with 10.000 Provisioned IOPS its CPU utilization is around 80%. While freeable memory is in the 2GB range.
Web analytics reports show that the average load time of your web pages is around 1 5 to 2 seconds, but your SEO consultant wants to bring down the average load time to under 0.5 seconds.
How would you improve page load times for your users? (Choose 3 answers)
A. Lower the scale up trigger of your Auto Scaling group to 30% so it scales more aggressively.
B. Add an Amazon EIastiCache caching layer to your application for storing sessions and frequent DB quenes
C. Configure Amazon CIoudFront dynamic content support to enable caching of re-usable content from your site
D. Switch Amazon RDS database to the high memory extra large Instance type
E. Set up a second installation in another region, and use the Amazon Route 53 latency-based routing feature to select the right region.
Answer: A, B, D
Q8. You are playing around with setting up stacks using JSON templates in C|oudFormation to try and understand them a little better. You have set up about 5 or 6 but now start to wonder if you are being charged for these stacks. What is AWS's billing policy regarding stack resources?
A. You are not charged for the stack resources if they are not taking any traffic.
B. You are charged for the stack resources for the time they were operating (even if you deleted the stack right away)
C. You are charged for the stack resources for the time they were operating (but not if you deleted the stack within 60 minutes)
D. You are charged for the stack resources for the time they were operating (but not if you deleted the stack within 30 minutes)
Answer: B
Explanation:
A stack is a collection of AWS resources that you can manage as a single unit. In other words, you can create, update, or delete a collection of resources by creating, updating, or deleting stacks. All the resources in a stack are defined by the stack's AWS CIoudFormation template. A stack, for instance, can include all the resources required to run a web application, such as a web server, a database, and networking rules. If you no longer require that web application, you can simply delete the stack, and all of its related resources are deleted.
You are charged for the stack resources for the time they were operating (even if you deleted the stack right away).
Reference: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/stacks.html
Q9. You are designing a photo sharing mobile app the application will store all pictures in a single Amazon 53 bucket.
Users will upload pictures from their mobile device directly to Amazon 53 and will be able to view and download their own pictures directly from Amazon 53.
You want to configure security to handle potentially millions of users in the most secure manner possible. What should your server-side application do when a new user registers on the photo sharing mobile application?
A. Create a set of long-term credentials using AWS Security Token Service with appropriate permissions Store these credentials in the mobile app and use them to access Amazon 53.
B. Record the user's Information in Amazon RDS and create a role in IAM with appropriate permissions. When the user uses their mobile app create temporary credentials using the AWS Security Token Service 'Assume Role' function Store these credentials in the mobile app's memory and use them to access Amazon 53 Generate new credentials the next time the user runs the mobile app.
C. Record the user's Information In Amazon DynamoDB. When the user uses their mobile app create temporary credentials using AWS Security Token Service with appropriate permissions Store these credentials in the mobile app's memory and use them to access Amazon 53 Generate new credentials the next time the user runs the mobile app.
D. Create IAM user. Assign appropriate permissions to the IAM user Generate an access key and secret key for the IAM user, store them in the mobile app and use these credentials to access Amazon 53.
E. Create an IAM user. Update the bucket policy with appropriate permissions for the IAM user Generate an access Key and secret Key for the IAM user, store them In the mobile app and use these credentials to access Amazon 53.
Answer: B
Q10. A user needs to run a batch process which runs for 10 minutes. This will only be run once, or at maximum twice, in the next month, so the processes will be temporary only. The process needs 15 X-Large instances. The process downloads the code from S3 on each instance when it is launched, and then generates a temporary log file. Once the instance is terminated, all the data will be lost. Which of the below mentioned pricing models should the user choose in this case?
A. Spot instance.
B. Reserved instance.
C. On-demand instance.
D. EBS optimized instance.
Answer: A
Explanation:
In Amazon Web Services, the spot instance is useful when the user wants to run a process temporarily. The spot instance can terminate the instance if the other user outbids the existing bid. In this case all storage is temporary and the data is not required to be persistent. Thus, the spot instance is a good option to save money.
Reference: http://aws.amazon.com/ec2/purchasing-options/spot-instances/
Q11. EBS Snapshots occur _
A. Asynchronously
B. Synchronously
C. Weekly
Answer: A
Q12. Your company has been storing a lot of data in Amazon Glacier and has asked for an inventory of what is in there exactly. So you have decided that you need to download a vault inventory. Which of the following statements is incorrect in relation to Vault Operations in Amazon Glacier?
A. You can use Amazon Simple Notification Service (Amazon SNS) notifications to notify you when the job completes.
B. A vault inventory refers to the list of archives in a vault.
C. You can use Amazon Simple Queue Service (Amazon SQS) notifications to notify you when the job completes.
D. Downloading a vault inventory is an asynchronous operation.
Answer: C
Explanation:
Amazon Glacier supports various vault operations.
A vault inventory refers to the list of archives in a vault. For each archive in the list, the inventory provides archive information such as archive ID, creation date, and size. Amazon Glacier updates the vault inventory approximately once a day, starting on the day the first archive is uploaded to the vault. A vault inventory must exist for you to be able to download it.
Downloading a vault inventory is an asynchronous operation. You must first initiate a job to download the inventory. After receMng the job request, Amazon Glacier prepares your inventory for download. After the job completes, you can download the inventory data.
Given the asynchronous nature of the job, you can use Amazon Simple Notification Service (Amazon SNS) notifications to notify you when the job completes. You can specify an Amazon SNS topic for each indMdual job request or configure your vault to send a notification when specific vault events occur. Amazon Glacier prepares an inventory for each vault periodically, every 24 hours. If there have been no archive additions or deletions to the vault since the last inventory, the inventory date is not updated. When you initiate a job for a vault inventory, Amazon Glacier returns the last inventory it generated, which is a point-in-time snapshot and not real-time data. You might not find it useful to retrieve vault inventory for each archive upload. However, suppose you maintain a database on the client-side associating metadata about the archives you upload to Amazon Glacier. Then, you might find the vault inventory useful to reconcile information in your database with the actual vault inventory.
Reference: http://docs.aws.amazon.com/amazongIacier/latest/dev/working-with-vaults.html
Q13. You have been doing a lot of testing of your VPC Network by deliberately failing EC2 instances to test whether instances are failing over properly. Your customer who will be paying the AWS bill for all this asks you if he being charged for all these instances. You try to explain to him how the billing works on EC2 instances to the best of your knowledge. What would be an appropriate response to give to the customer
in regards to this?
A. Billing commences when Amazon EC2 AM instance is completely up and billing ends as soon as the instance starts to shutdown.
B. Billing only commences only after 1 hour of uptime and billing ends when the instance terminates.
C. Billing commences when Amazon EC2 initiates the boot sequence of an AM instance and billing ends when the instance shuts down.
D. Billing commences when Amazon EC2 initiates the boot sequence of an AM instance and billing ends as soon as the instance starts to shutdown.
Answer: C
Explanation:
Billing commences when Amazon EC2 initiates the boot sequence of an AM instance. Billing ends when the instance shuts down, which could occur through a web services command, by running "shutdown -h", or through instance failure.
Reference: http://aws.amazon.com/ec2/faqs/#BiIIing
Q14. In the most recent company meeting, your CEO focused on the fact that everyone in the organization needs to make sure that all of the infrastructure that is built is truly scalable. Which of the following statements is incorrect in reference to scalable architecture?
A. A scalable service is capable of handling heterogeneity.
B. A scalable service is resilient.
C. A scalable architecture won't be cost effective as it grows.
D. Increasing resources results in a proportional increase in performance.
Answer: C
Explanation:
In AWS it is critical to build a scalable architecture in order to take advantage of a scalable infrastructure. The cloud is designed to provide conceptually infinite scalability. However, you cannot leverage all that scalability in infrastructure if your architecture is not scalable. Both have to work together. You will have to identify the monolithic components and bottlenecks in your architecture, identify the areas where you cannot leverage the on-demand provisioning capabilities in your architecture, and work to refactor your application, in order to leverage the scalable infrastructure and take advantage of the cloud.
Characteristics of a truly scalable application:
Increasing resources results in a proportional increase in performance A scalable service is capable of handling heterogeneity
A scalable service is operationally efficient A scalable service is resilient
A scalable service should become more cost effective when it grows (Cost per unit reduces as the number of units increases)
Reference: http://media.amazonwebservices.com/AWS_CIoud_Best_Practices.pdf
Q15. You have been asked to set up a database in AWS that will require frequent and granular updates. You know that you will require a reasonable amount of storage space but are not sure of the best option. What is the recommended storage option when you run a database on an instance with the above criteria?
A. Amazon S3
B. Amazon EBS
C. AWS Storage Gateway
D. Amazon Glacier
Answer: B
Explanation:
Amazon EBS provides durable, block-level storage volumes that you can attach to a running Amazon EC2 instance. You can use Amazon EBS as a primary storage device for data that requires frequent and granular updates. For example, Amazon EBS is the recommended storage option when you run a database on an instance.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Storage.html