AWS SysOps-A | Practice Quiz 01
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Question 1 of 54
1. Question
Your team Is excited about the use of AWS because now they have access to programmable Infrastructure” You have been asked to manage your AWS infrastructure In a manner similar to the way you might manage application code You want to be able to deploy exact copies of different versions of your infrastructure, stage changes into different environments, revert back to previous versions, and identify what versions are running at any particular time (development test QA. production). Which approach addresses this requirement?
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Question 2 of 54
2. Question
When preparing for a compliance assessment of your system built inside of AWS. what are three best-practices for you to prepare for an audit? Choose 3 answers
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Question 3 of 54
3. Question
A media company produces new video files on-premises every day with a total size of around 100GB after compression. All files have a size of 1-2 GB and need to be uploaded to Amazon S3 every night in a fixed time window between 3am and 5am. Current upload takes almost 3 hours, although less than half of the available bandwidth is used. What step(s) would ensure that the file uploads are able to complete in the allotted time window?
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Question 4 of 54
4. Question
What would happen to an RDS (Relational Database Service) multi-Availability Zone deployment of the primary DB instance fails?
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Question 5 of 54
5. Question
Your EC2-Based Multi-tier application includes a monitoring instance that periodically makes application -level read only requests of various application components and if any of those fail more than three times 30 seconds calls CloudWatch lo fire an alarm, and the alarm notifies your operations team by email and SMS of a possible application health problem. However, you also need to watch the watcher -the monitoring instance itself – and be notified if it becomes unhealthy. Which of the following is a simple way to achieve that goal?
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Question 6 of 54
6. Question
How can the domain’s zone apex for example “myzoneapexdomain com” be pointed towards an Elastic Load Balancer?
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Question 7 of 54
7. Question
You are tasked with setting up a cluster of EC2 Instances for a NoSQL database. The database requires random read IO disk performance up to a 100,000 IOPS at 4KB block side per node. Which of the following EC2 instances will perform the best for this workload?
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Question 8 of 54
8. Question
Which of the following statements about this S3 bucket policy is true?
{
“Id”: “IPAllowPolicy”
“Statement”:[
{
“Sid”: “IPAllow”,
“Action”: “s3”,
“Effect”: “Allow”,
“Resource”: “arn:aws:s3:::mybucket/*,
“Condition”: {
“IPAddress”: {
“aws:SourceIP”: “192.168.100.0/24”
},
“NotipAddress”: {
“aws:SourceIp”: “192.168.100.188/32
}
},
“Principal”: {
“AWS”: {
“*”
]
}
}
]
}CorrectIncorrect -
Question 9 of 54
9. Question
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 existing Instances does not decrease, causing all existing users to have a sluggish experience. Which two answer choices independently describe a behavior that could be the cause of the sluggish user experience?
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Question 10 of 54
10. Question
You use S3 to store critical data for your company Several users within your group currently have lull permissions to your S3 buckets You need to come up with a solution mat does not impact your users and also protect against the accidental deletion of objects. Which two options will address this issue Choose 2 answers
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Question 11 of 54
11. Question
You have been asked to leverage Amazon VPC EC2 and SQS to implement an application that submits and receives millions of messages per second to a message queue. You want to ensure your application has sufficient bandwidth between your EC2 instances and SQS. Which option will provide the most scalable solution for communicating between the application and SQS?
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Question 12 of 54
12. Question
You have a web-style application with a stateless but CPU and memory-intensive web tier running on a cc2 8xlarge EC2 instance inside of a VPC The instance when under load is having problems returning requests within the SLA as defined by your business The application maintains its state in a DynamoDB table, but the data tier is properly provisioned and responses are consistently fast. How can you best resolve the issue of the application responses not meeting your SLA?
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Question 13 of 54
13. Question
You need to design a VPC for a web-application consisting of an Elastic Load Balancer (ELB). a fleet of web/application servers, and an RDS database The entire Infrastructure must be distributed over 2 availability zones. Which VPC configuration works while assuring the database is not available from the Internet?
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Question 14 of 54
14. Question
You have a server with a 5O0GB Amazon EBS data volume. The volume is 80% full. You need to back up the volume at regular intervals and be able to re-create the volume in a new Availability Zone in the shortest time possible. All applications using the volume can be paused for a period of a few minutes with no discernible user impact. Which of the following backup methods will best fulfill your requirements?
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Question 15 of 54
15. Question
You are managing a legacy application Inside VPC with hard coded IP addresses in its configuration. Which two mechanisms will allow the application to failover to new instances without the need for reconfiguration? Choose 2 answers
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Question 16 of 54
16. Question
You have decided to change the Instance type for instances running In your application tier that are using Auto Scaling. In which area below would you change the instance type definition?
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Question 17 of 54
17. Question
You are designing a system that has a Bastion host. This component needs to be highly available without human intervention. Which of the following approaches would you select?
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Question 18 of 54
18. Question
You have set up Individual AWS accounts for each project. You have been asked to make sure your AWS Infrastructure costs do not exceed the budget set per project for each month. Which of the following approaches can help ensure that you do not exceed the budget each month?
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Question 19 of 54
19. Question
Your entire AWS infrastructure lives inside of one Amazon VPC You have an Infrastructure monitoring application running on an Amazon instance in Availability Zone (AZ) A of the region, and another application instance running in AZ B. The monitoring application needs to make use of ICMP ping to confirm network reachability of the instance hosting the application.
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Question 20 of 54
20. Question
You are running a web-application on AWS consisting of the following components an Elastic Load Balancer (ELB) an Auto-Scaling Group of EC2 instances running Linux/PHP/Apache, and Relational DataBase Service (RDS) MySQL. Which security measures fall into AWS’s responsibility?
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Question 21 of 54
21. Question
When assessing an organization AWS use of AWS API access credentials which of the following three credentials should be evaluated? Choose 3 answers
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Question 22 of 54
22. Question
You run a web application where web servers on EC2 Instances are In an Auto Scaling group Monitoring over the last 6 months shows that 6 web servers are necessary to handle the minimum load. During the day up to 12 servers are needed Five to six days per year, the number of web servers required might go up to 15. What would you recommend to minimize costs while being able to provide hill availability?
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Question 23 of 54
23. Question
You have a web application leveraging an Elastic Load Balancer (ELB) In front of the web servers deployed using an Auto Scaling Group Your database is running on Relational Database Service (RDS) The application serves out technical articles and responses to them in general there are more views of an article than there are responses to the article. On occasion, an article on the site becomes extremely popular resulting in significant traffic Increases that causes the site to go down. What could you do to help alleviate the pressure on the infrastructure while maintaining availability during these events? (Choose 3 answers)
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Question 24 of 54
24. Question
You are tasked with the migration of a highly trafficked node.js application to AWS. In order to comply with organizational standards Chef recipes must be used to configure the application servers that host this application and to support application lifecycle events. Which deployment option meets these requirements while minimizing administrative burden?
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Question 25 of 54
25. Question
You are running a database on an EC2 instance, with the data stored on Elastic Block Store (EBS) for persistence At times throughout the day, you are seeing large variance in the response times of the database queries Looking into the instance with the isolate command you see a lot of wait time on the disk volume that the database’s data is stored on. What two ways can you improve the performance of the database’s storage while maintaining the current persistence of the data? Choose 2 answers
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Question 26 of 54
26. Question
What is a placement group?
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Question 27 of 54
27. Question
An application that you are managing has EC2 instances & Dynamo DB tables deployed to several AWS Regions. In order to monitor the performance of the application globally, you would like to see two graphs 1) Avg CPU Utilization across all EC2 instances and 2) Number of Throttled Requests for all DynamoDB tables. How can you accomplish this?
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Question 28 of 54
28. Question
You are currently hosting multiple applications in a VPC and have logged numerous port scans coming in from a specific IP address block. Your security team has requested that all access from the offending IP address block be denied for the next 24 hours. Which of the following is the best method to quickly and temporarily deny access from the specified IP address block?
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Question 29 of 54
29. Question
Which of the following requires a custom CloudWatch metric to monitor?
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Question 30 of 54
30. Question
EC2 EBS-backed (EBS root) instance is stopped, what happens to the data on any ephemeral store volumes?
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Question 31 of 54
31. Question
The majority of your Infrastructure is on premises and you have a small footprint on AWS. Your company has decided to roll out a new application that is heavily dependent on low latency connectivity to LDAP for authentication. Your security policy requires minimal changes to the company’s existing application user management processes. What option would you implement to successfully launch this application?
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Question 32 of 54
32. Question
Your organization’s security policy requires that all privileged users either use frequently rotated passwords or one-time access credentials in addition to username/password. Which two of the following options would allow an organization to enforce this policy for AWS users? Choose 2 answers
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Question 33 of 54
33. Question
Your application currently leverages AWS Auto Scaling to grow and shrink as load Increases/ decreases and has been performing well. Your marketing team expects a steady ramp up in traffic to follow an upcoming campaign that will result in a 20x growth in traffic over 4 weeks. Your forecast for the approximate number of Amazon EC2 instances necessary to meet the peak demand is 175. What should you do to avoid potential service disruptions during the ramp up in traffic?
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Question 34 of 54
34. Question
You have two Elastic Compute Cloud (EC2) instances inside a Virtual Private Cloud (VPC) in the same Availability Zone (AZ) but in different subnets. One instance is running a database and the other instance an application that will interface with the database. You want to confirm that they can talk to each other for your application to work properly. Which two things do we need to confirm in the VPC settings so that these EC2 instances can communicate inside the VPC? Choose 2 answers
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Question 35 of 54
35. Question
You are creating an Auto Scaling group whose Instances need to insert a custom metric into CloudWatch. Which method would be the best way to authenticate your CloudWatch PUT request?
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Question 36 of 54
36. Question
When an EC2 instance that is backed by an S3-based AMI Is terminated, what happens to the data on me root volume?
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Question 37 of 54
37. Question
If you want to launch Amazon Elastic Compute Cloud (EC2) Instances and assign each Instance a predetermined private IP address you should:
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Question 38 of 54
38. Question
You have an Auto Scaling group associated with an Elastic Load Balancer (ELB). You have noticed that instances launched via the Auto Scaling group are being marked unhealthy due to an ELB health check, but these unhealthy instances are not being terminated. What do you need to do to ensure trial instances marked unhealthy by the ELB will be terminated and replaced?
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Question 39 of 54
39. Question
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?
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Question 40 of 54
40. Question
You receive a frantic call from a new DBA who accidentally dropped a table containing all your customers. Which Amazon RDS feature will allow you to reliably restore your database to within 5 minutes of when the mistake was made?
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Question 41 of 54
41. Question
You have started a new job and are reviewing your company’s infrastructure on AWS You notice one web application where they have an Elastic Load Balancer in front of web instances in an Auto Scaling Group. When you check the metrics for the ELB in CloudWatch you see four healthy instances In Availability Zone (AZ) A and zero in AZ B There are zero unhealthy instances. What do you need to fix to balance the instances across AZs?
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Question 42 of 54
42. Question
You have identified network throughput as a bottleneck on your m1.small EC2 instance when uploading data Into Amazon S3 In the same region. How do you remedy this situation? Add an additional ENI
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Question 43 of 54
43. Question
Which two AWS services provide out-of-the-box user configurable automatic backup-as-aservice and backup rotation options?
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Question 44 of 54
44. Question
You are using ElastiCache Memcached to store session state and cache database queries in your infrastructure. You notice in CloudWatch that Evictions and GetMisses are both very high. What two actions could you take to rectify this?
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Question 45 of 54
45. Question
An organization’s security policy requires multiple copies of all critical data to be replicated across at least a primary and backup data center. The organization has decided to store some critical data on Amazon S3. Which option should you implement to ensure this requirement is met?
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Question 46 of 54
46. Question
Which services allow the customer to retain full administrative privileges of the underlying EC2 instances? Choose 2 answers
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Question 47 of 54
47. Question
You have been asked to propose a multi-region deployment of a web-facing application where a controlled portion of your traffic is being processed by an alternate region. Which configuration would achieve that goal?
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Question 48 of 54
48. Question
Which two components provide connectivity with external networks? When attached to an Amazon VPC which two components provide connectivity with external networks? Choose 2 answers
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Question 49 of 54
49. Question
You are attempting to connect to an instance in Amazon VPC without success You have already verified that the VPC has an Internet Gateway (IGW) the instance has an associated Elastic IP (EIP) and correct security group rules are in place. Which VPC component should you evaluate next?
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Question 50 of 54
50. Question
An organization has configured a VPC with an Internet Gateway (IGW). pairs of public and private subnets (each with one subnet per Availability Zone), and an Elastic Load Balancer (ELB) configured to use the public subnets. The applications web tier leverages the ELB, Auto Scaling and a Multi-AZ RDS database instance. The organization would like to eliminate any potential single points of failure in this design. What step should you take to achieve this organization’s objective?
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Question 51 of 54
51. Question
You have been asked to automate many routine systems administrator backup and recovery activities. Your current plan is to leverage AWS-managed solutions as much as possible and automate the rest with the AWS CLI and scripts. Which task would be best accomplished with a script?
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Question 52 of 54
52. Question
What are characteristics of Amazon S3? Choose 2 answers
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Question 53 of 54
53. Question
When creation of an EBS snapshot is initiated but not completed, the EBS volume
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Question 54 of 54
54. Question
You have a Linux EC2 web server instance running inside a VPC. The instance is in a public subnet and has an EIP associated with it so you can connect to it over the Internet via HTTP or SSH. The instance was also fully accessible when you last logged in via SSH and was also serving web requests on port 80. Now you are not able to SSH into the host nor does it respond to web requests on port 80, that were working fine last time you checked. You have double-checked that all networking configuration parameters (security groups route tables, IGW, EIP. NACLs etc.) are properly configured and you haven’t made any changes to those anyway since you were last able to reach the Instance). You look at the EC2 console and notice that system status check shows “impaired.” Which should be your next step in troubleshooting and attempting to get the instance back to a healthy state so that you can log in again?
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