AWS: Mock Quiz

Frage	Antworten
2: You are consulting for a company with a limited budget for on-premise hardware. However, they need to store large amounts of data that is easily accessible through a network share with on-premise employees. Which AWS solution would you implement for this company?	Gateway-Stored volumes use S3 to backup the data but store locally, which means we're limited to the amount of space we allocate to the VM. With the Gateway-Cache volumes, you aren't limited in that way since you're storing all of the data on S3 and simply caching frequently-used data locally.
3: You are consulting for a finance company that has specific backup and archiving policies. This company's RTO for all financial documents created in the past 6 months is 1 hour. The second requirement is to configure a setup that allows for all documents that are 6 months or older to be sent automatically for archiving in a lower-cost but highly durable archive environment. Given that the company is using the storage gateway, gateway-stored configuration, which of the following would be the best setup to reach the objectives?	Enable lifecycle policies to send to Glacier
4: Your company is concerned with EBS volume backup on Amazon EC2 and wants to ensure they have proper backups and that the data is durable. What solution would you implement and why?	Write cron job to use AWS CLI to take snapshot and put it in S3 Standard
5: You are working for a startup company that is building an application that receives large amounts of data. Unfortunately, current funding has left the start-up short on cash, cannot afford to purchase thousands of dollars of storage hardware, and has opted to use AWS. Which services would you implement in order to store a virtually unlimited amount of data without any effort to scale when demand unexpectedly increases? S3	6: Which statements is true about Amazon S3 standard storage class? Provide 11- 9 durability
7: Which of the following relational database servers are NOT available on Amazon RDS? DB2	8: Which of the following services allow the administrator access to the underlying operating system? EC2
9: True or False: Data stored on EBS volumes are automatically and redundantly stored in multiple physical volumes in the same availability zone as part of the normal operations of the EBS service at no additional charge. True	10: You've been contacted by a client who is having connectivity issues on their Amazon Virtual Private Cloud and EC2 instances. After logging into the environment, you notice that the customer is using four instances that all belong to a subnet with an attached internet gateway. The instances also belong to the same security group. However, one of the instances is not able to send or receive traffic like the other three. After logging into the internal network and investigating, you find that the instance is working as expected and determine it is not an operating system issue. Which of the following is missing from the environment and is preventing that single instance from connecting? EC2 instance may not have public IP assigned
11: You've been tasked with building out a duplicate environment in another region for disaster recovery purposes. Part of your environment relies on EC2 instances with preconfigured software. What steps would you take to configure the instances in another region? Create AMI of instance and copy to the region	12: Your company has moved a legacy application from an on-premise data center to the cloud. The legacy application requires a static IP address hard-coded into the backend, which prevents you from deploying the application with high availability and fault tolerance using the ELB. Which steps would you take to apply high availability and fault tolerance to this application? Elastic IP address
13: You are a consultant tasked with migrating an on-premise application architecture to AWS. During your design process you have to give consideration to current on-premise security and determine which security attributes you are responsible for on AWS. Which of the following does AWS provide for you as part of the shared responsibility model? Physical Network Infrastructure	14: You are consulting for a healthcare company that has strict compliance and auditing requirements. When architecting the application environment on AWS, which services or service features might you enable to take advantage of monitoring to ensure auditing the environment for compliance is easy and follows the strict healthcare compliance requirements? Cloudtrail
15: You're building out an application on AWS that is running within a single region. However, you're designing with disaster recovery in mind. Your intention is to build the application so that if the current region becomes unavailable, you can failover to another region. Part of your application relies heavily on pre-built AMIs. In order to share those AMIs with the region you're using as a backup, what process would you take?	16: While running an EC2 instance, you've been storing data on one of the instance's volumes. However, to save money, you shut down the instance for the weekend. The following week, after starting the instance, you notice that all your work has been lost and is no longer available on the EC2 instance. What might be the cause of this? Use of internal store
17: After building an application that makes use of an Elastic Load Balancer over port 80, you notice that your instances, even though they are healthy as part of the health check, are not serving traffic when you go to the ELB DNS cname. What might be the cause of this issue?	Remember that health checks do not have to be performed on port 80. This is the default, yes, but it can be changed. So in this case we could have a health check configured on a different port which is why it would be marked as healthy even though the ELB security group and/or the EC2 instance security group on port 80 could be closed. Even if this scenario does not sound very likely, it is possible. AWS likes to try and trick test takers by throwing in scenarios like these, which is why we included this tricky question.
18: If an instance that belongs to an Elastic Load Balancer's health check fails, what occurs to the instance that fails? ELB will deregister an not send the traffic	19: True of False: Auto Scaling is a tool used for creating elastic and self-healing applications.
20: Amazon Glacier is designed for: Data archives	21: You are building a system to distribute confidential training videos to employees. Using CloudFront, what method would be used to serve content that is stored in S3, but not publicly accessible from S3 directly?
21: In the basic monitoring package for EC2, Amazon CloudWatch provides the following metrics: CPU Utilization	23: Elasticity is a fundamental property of the cloud. What best describes elasticity? Scale resources up and down
24: Company B provides an online image recognition service and utilizes SQS to decouple system components for scaleability. The SQS consumer's readers poll the image queue as often as possible to keep end-to-end throughput as high as possible. However, Company B is realizing that polling in tight loops is burning CPU cycles and increasing costs with empty responses. How can company B reduce the number of empty responses? Enable long polling	25: What is the difference between an availability zone and an edge location?
26: True or False: Amazon SQS (Simple Queue Service) guarantees the delivery of a message AT LEAST once, but cannot guarantee it will not create duplicates. True	27: In order to establish a successful site-to-site VPN connection from your on-premise network to the VPC (Virtual Private Cloud), which of the following needs to be configured inside of the VPC? When you configure a VPN, you're configuring it from the VPC and from the on-premises network. You are taking information (the public IP) from the on-premises network and configuring it inside of the VPC.
28: While implementing a disaster recovery strategy in another region, you are attempting to move the data from one EBS volume to another in a separate region. What is the best way to do this? Keep in mind this is not a live production replication copy. Take snapshot and copy to region	29: When designing a cloud service based on AWS and you choose to use RRS on S3 instead of S3 standard storage type, what type of trade offs do you have to build your application around? 99.99% durability
30: One of your instances is reporting an unhealthy system status check. However, this is not something you should have to monitor and repair on your own. How might you automate the repair of the system status check failure in an AWS environment? Use cloudwatch	31: Your web application front end consists of multiple EC2 instances behind an Elastic Load Balancer. You configured the ELB to perform health checks on these EC2 instances. If an instance fails to pass health checks, which statement is true? ELB will not send traffic
32: An AWS VPC (Virtual Private Cloud) allows you to _______.	33: You are designing a global application that takes advantage of multiple regions. As part of your application, the need to synchronize from one region to another is required to ensure your application is serving the same data when employing latency-based Route 53 DNS records. To ensure this happens, you have determined that using the AWS CLI to sync files from the primary storage servers to S3 is the best method. How might you implement AWS CLI authentication against the S3 service? Create EC2 IAM role
34: What URL might you query on an EC2 instance to find the public AND private IP address of an instance?	35: For basic monitoring on AWS, which metrics are not included as part of the basic monitoring package? Free Swap
36: Your company has an application that requires access to a NoSQL database. Your IT department has no desire to manage the NoSQL servers. Which Amazon service provides a fully-managed and highly available NoSQL service? DynamoDB	37: Your application's usage peaks at 90% during the hours of 9 AM and 10 AM everyday. All other hours require only 10% of the peak resources. What is the best way to scale your application so you're only paying for max resources during peak hours? Proactive Cycle Scaling
38: True of False: Amazon Auto Scaling is not meant to handle instant load spikes but is built to grow with a gradual increase in usage over a short time period. true	39: Your company is posting a big article on the front page of your website tomorrow. It is expected that the demand could potentially overwhelm your infrastructure. In the event of a load failure, how can you set up DNS failover to a static website?
40: You own an image manipulation application. Your users take a picture, upload it to your app, and request filters to be added to the image. You need to decouple the application so your users are not waiting for the image processing to take place. How would you go about doing this? SQS	41: Your EC2 instances are configured to run behind an Amazon VPC. You have assigned two web serves instances to an Elastic Load Balancer. However, the instances and the ELB are not reachable via URL to the elastic load balancer serving the web app data from the EC2 instances. How might you resolve the issue so that your instances are serving the web app data to the public Internet? Attach IGW to VPC
42: As part of your application architecture requirements, the company you are working for has requested the ability to run analytics against all combined log files from the Elastic Load Balancer. Which services are used together to collect logs and process log file analysis in an AWS environment? EC2 and EMR	43: By default, is data in S3 encrypted? No
44: Your company requires that all the data on your EBS-backed EC2 volumes be encrypted. How would you go about doing this? Enable it	45: Your company wants to backup the onsite file server to AWS but does not want to serve the files from S3 to your office network when files need accessed. Which service and setup would you use to accomplish this task? Use Amazon Storage Gateway and Gateway Stored Data
46: Your company is moving their entire 20 TB data warehouse to the cloud. With your current bandwidth it would take 2 months to transfer the data. Which service would allow you to quickly get your data into AWS? Amazon Import Export	47: Given the following region design, what is the bare minimum for configuring high availability and why? Two availability zones within a region, az-a and az-b. ELB with 1 instance in each availabilityzone and cross zone load balancing and auto scaling
48: When a snapshot is being taken against an EBS volume, the volume becomes unavailable and the instance no longer has the ability to communicate with the EBS volume until the snapshot is complete. False	49: You are asked to perform a security audit on a company’s AWS environment. You log in to their AWS account with the root user credentials and discover that they are using a VPN to connect to and manage their private EC2 instances. Upon further inspection, you find that they are not regularly patching their RDS instances. Finally, you notice that they are using IAM policies rather than bucket policies to manage access to their S3 buckets. What do you cite as the most critical security risk in your report?
50: You are planning on creating an EC2 instance that will create S3 objects and modify CloudWatch alarms. What is the best way to deploy this instance?	51: Your AWS environment contains several on-demand EC2 instances dedicated to a project that has just been cancelled. Your supervisor does not want to incur charges for these on-demand instances, but also does not want to lose the data just yet because there is a chance the project may be revived in the next few days. What should you do to minimize charges for these instances in the meantime? You should not terminate an instance that you may need to place back into production in a few days. The best way to minimize charges is to stop the instances to avoid any data transfer charges that the instance might incur if left running.
52: You recently purchased four reserved EC2 instances in the US-East-1 region’s Availability Zone 1. Your supervisor just informed you that she would like the instances distributed equally across US-East-1 region Availability Zones 1 and 2. Can you use the reserved instances you just purchased to deploy EC2 instances in Availability Zone 2?	53: You are asked to evaluate a company’s AWS environment to find ways to reduce cost. You discover they are running three production web server reserved EC2 instances with EBS-backed root volumes. These instances have a consistent CPU load of 80%. Traffic is being distributed to these instances by an Elastic Load Balancer. They also have production and development Multi-AZ RDS MySQL databases. What recommendation would you make to reduce cost in this environment without affecting availability of mission-critical systems?
54: Which of the following is not a legitimate concern?	55: Your supervisor asks you to create a highly available website which serves static content from EC2 instances. Which of the following is not a requirement to accomplish this goal? While an SQS queue can be an important part of a multi-step decoupled web application, it is not necessary to host a highly available static website on EC2. An auto scaling group configured to deploy EC2 instances in multiple subnets located in multiple availability zones allows an application to remain online despite an instance or AZ failure.
56: Your supervisor asks you to create a highly available, decoupled web application. Which of the following does not help you accomplish this goal? Elastic Load Balancers, Auto Scaling, and SQS can all play a part in a highly available, decoupled web application. IAM user credentials should not be stored on a EC2 instance.	57: You are asked to review a plan that your company has made to create a new application that makes use of SQS, EC2, Auto Scaling and CloudWatch. Which of the following action items should you advise your company not to implement? Polling executed with a wait time of greater than 0 seconds is called long polling.
58: Your supervisor calls you wanting to know why an SWF workflow you created has not made any progress in the last three weeks. What is the most likely explanation for the workflow’s behavior? SWF task and workflow execution can last up to one year, and can include tasks to be performed by on-premises servers and humans.	59: Your organization has been using a HSM (Hardware Security Module) for secure key storage. It is only used for generating keys for your EC2 instances. Unfortunately, the HSM has been zeroized after someone attempted to log in as the administrator three times using an invalid password. This means that the encryption keys on it have been wiped. You did not have a copy of the keys stored anywhere else. How can you obtain a new copy of the keys that you had stored on HSM? You cant
60: You are using IOT sensors to monitor the movement of a group of hikers on a three day trek and send the information into an Kinesis Stream. They each have a sensor in their shoe and you know for certain that there is no problem with mobile coverage so all the data is getting back to the stream. You have used default settings for the stream. At the end of the third day the data is sent to an S3 bucket. When you go to interpret the data in S3 there is only data for the last day and nothing for the first 2 days. Which of the following is the most probable cause of this?

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