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Q1. You are designing an SSUTLS solution that requires HTIPS clients to be authenticated by the Web server using client certificate authentication. The solution must be resilient.
Which of the following options would you consider for configuring the web server infrastructure? (Choose 2 answers)
A. Configure ELB with TCP listeners on TCP/4d3. And place the Web servers behind it.
B. Configure your Web servers with EIPS Place the Web servers in a Route53 Record Set and configure health checks against all Web servers.
C. Configure ELB with HTIPS listeners, and place the Web servers behind it.
D. Configure your web servers as the origins for a Cloud Front distribution. Use custom SSL certificates on your Cloud Front distribution.
Answer: A, B
Q2. An accountant asks you to design a small VPC network for him and, due to the nature of his business, just needs something where the workload on the network will be low, and dynamic data will be accessed infrequently. Being an accountant, low cost is also a major factor. Which EBS volume type would best suit his requirements?
A. Magnetic
B. Any, as they all perform the same and cost the same.
C. General Purpose (SSD)
D. Magnetic or Provisioned IOPS (SSD)
Answer: A
Explanation:
You can choose between three EBS volume types to best meet the needs of their workloads: General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic. General Purpose (SSD) is the new, SSD-backed, general purpose EBS volume type that we recommend as the default choice for customers. General Purpose (SSD) volumes are suitable for a broad range of workloads, including small to medium sized databases, development and test environments, and boot volumes. Provisioned IOPS (SSD) volumes offer storage with consistent and low-latency performance, and are designed for I/O intensive applications such as large relational or NoSQL databases. Magnetic volumes provide the lowest cost per gigabyte of all EBS volume types. Magnetic volumes are ideal for workloads where data is accessed infrequently, and applications where the lowest storage cost is important.
Reference: https://aws.amazon.com/ec2/faqs/
Q3. You currently operate a web application In the AWS US-East region The application runs on an autoscaled layer of EC2 instances and an RDS Multi-AZ database Your IT security compliance officer has tasked you to develop a reliable and durable logging solution to track changes made to your EC2.1AM And RDS resources. The solution must ensure the integrity and confidentiality of your log data. Which of these solutions would you recommend?
A. Create a new C|oudTraiI trail with one new 53 bucket to store the logs and with the global services option selected Use IAM roles 53 bucket policies and Multi Factor Authentication (MFA) Delete on the 53 bucket that stores your logs.
B. Create a new CIoudTraiI with one new 53 bucket to store the logs Configure SNS to send log file delivery notifications to your management system Use IAM roles and 53 bucket policies on the 53 bucket mat stores your logs.
C. Create a new CIoudTraiI trail with an existing 53 bucket to store the logs and with the global services option selected Use 53 ACLs and Multi Factor Authentication (MFA) Delete on the 53 bucket that stores your logs.
D. Create three new C|oudTrai| trails with three new 53 buckets to store the logs one for the AWS Management console, one for AWS 5DKs and one for command line tools Use IAM roles and 53 bucket policies on the 53 buckets that store your logs.
Answer: A
Q4. A company is building a voting system for a popular TV show, viewers win watch the performances then visit the show's website to vote for their favorite performer. It is expected that in a short period of time after the show has finished the site will receive millions of visitors. The visitors will first login to the site using their Amazon.com credentials and then submit their vote. After the voting is completed the page will display the vote totals. The company needs to build the site such that can handle the rapid influx of traffic while maintaining good performance but also wants to keep costs to a minimum. Which of the design patterns below should they use?
A. Use Cloud Front and an Elastic Load balancer in front of an auto-scaled set of web servers, the web servers will first can the Login With Amazon service to authenticate the user then process the users vote and store the result into a multi-AZ Relational Database Service instance.
B. Use CIoudFront and the static website hosting feature of 53 with the Javascript SDK to call the Login With Amazon service to authenticate the user, use IAM Roles to gain permissions to a DynamoDB table to store the users vote.
C. Use Cloud Front and an Elastic Load Balancer in front of an auto-scaled set of web servers, the web servers will first call the Login with Amazon service to authenticate the user, the web servers will process the users vote and store the result into a DynamoDB table using IAM Roles for EC2 instances to gain permissions to the DynamoDB table.
D. Use Cloud Front and an Elastic Load Balancer in front of an auto-scaled set of web servers, the web servers will first call the Login. With Amazon service to authenticate the user, the web sewers win process the users vote and store the result into an SQS queue using IAM Roles for EC2 Instances to gain permissions to the SQS queue. A set of application sewers will then retrieve the items from the queue and store the result into a DynamoDB table.
Answer: D
Q5. How many types of block devices does Amazon EC2 support A
A. 2
B. 3
C. 4
D. 1
Answer: A
Q6. A user has configured ELB with two EBS backed EC2 instances. The user is trying to understand the DNS access and IP support for ELB. Which of the below mentioned statements may not help the user understand the IP mechanism supported by ELB?
A. The client can connect over IPV4 or IPV6 using Dualstack
B. Communication between the load balancer and back-end instances is always through IPV4
C. ELB DNS supports both IPV4 and IPV6
D. The ELB supports either IPV4 or IPV6 but not both
Answer: D
Explanation:
Elastic Load Balancing supports both Internet Protocol version 6 (IPv6) and Internet Protocol version 4 (IPv4). Clients can connect to the user’s load balancer using either IPv4 or IPv6 (in EC2-Classic) DNS. However, communication between the load balancer and its back-end instances uses only IPv4. The user can use the Dualstack-prefixed DNS name to enable IPv6 support for communications between the client and the load balancers. Thus, the clients are able to access the load balancer using either IPv4 or IPv6 as their indMdual connectMty needs dictate.
Reference: http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/DeveIoperGuide/UserScenariosForEC2.html
Q7. Having set up a website to automatically be redirected to a backup website if it fails, you realize that there are different types of failovers that are possible. You need all your resources to be available the majority of the time. Using Amazon Route 53 which configuration would best suit this requirement?
A. Active-active failover.
B. None. Route 53 can't failover.
C. Active-passive failover.
D. Active-active-passive and other mixed configurations.
Answer: A
Explanation:
You can set up a variety of failover configurations using Amazon Route 53 alias: weighted, latency, geolocation routing, and failover resource record sets.
Active-active failover: Use this failover configuration when you want all of your resources to be available the majority of the time. When a resource becomes unavailable, Amazon Route 53 can detect that it's unhealthy and stop including it when responding to queries.
Active-passive failover: Use this failover configuration when you want a primary group of resources to be available the majority of the time and you want a secondary group of resources to be on standby in case all of the primary resources become unavailable. When responding to queries, Amazon Route 53 includes
only the healthy primary resources. If all of the primary resources are unhealthy, Amazon Route 53 begins to include only the healthy secondary resources in response to DNS queries.
Active-active-passive and other mixed configurations: You can combine alias and non-alias resource record sets to produce a variety of Amazon Route 53 behaviors.
Reference: http://docs.aws.amazon.com/Route53/Iatest/DeveIoperGuide/dns-failover.html
Q8. A web design company currently runs several FTP servers that their 250 customers use to upload and download large graphic files They wish to move this system to AWS to make it more scalable, but they wish to maintain customer privacy and Keep costs to a minimum.
What AWS architecture would you recommend?
A. ASK their customers to use an 53 client instead of an FTP client. Create a single 53 bucket Create an IAM user for each customer Put the IAM Users in a Group that has an IAM policy that permits access to sub-directories within the bucket via use of the 'username' Policy variable.
B. Create a single 53 bucket with Reduced Redundancy Storage turned on and ask their customers to use an 53 client instead of an FTP client Create a bucket for each customer with a Bucket Policy that permits access only to that one customer.
C. Create an auto-scaling group of FTP servers with a scaling policy to automatically scale-in when minimum network traffic on the auto-scaling group is below a given threshold. Load a central list of ftp users from 53 as part of the user Data startup script on each Instance.
D. Create a single 53 bucket with Requester Pays turned on and ask their customers to use an 53 client instead of an FTP client Create a bucket tor each customer with a Bucket Policy that permits access only to that one customer.
Answer: A
Q9. What is the default maximum number of Access Keys per user?
A. 10
B. 15
C. 2
D. 20
Answer: C
Explanation:
The default maximum number of Access Keys per user is 2.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.htmI
Q10. You have launched an EC2 instance with four (4) 500GB EBS Provisioned IOPS volumes attached The EC2 Instance Is EBS-Optimized and supports 500 Mbps throughput between EC2 and EBS The two EBS volumes are configured as a single RAID o device, and each Provisioned IOPS volume is provisioned with
4.000 IOPS (4 000 16KB reads or writes) for a total of 16.000 random IOPS on the instance The EC2 Instance initially delivers the expected 16 000 IOPS random read and write performance Sometime later in order to increase the total random 1/0 performance of the instance, you add an additional two 500 GB EBS Provisioned IOPS volumes to the RAID Each volume Is provisioned to 4.000 IOPs like the original four for a total of 24.000 IOPS on the EC2 instance Monitoring shows that the EC2 instance CPU utilization increased from 50% to 70%. but the total random IOPS measured at the instance level does not increase at all.
What is the problem and a valid solution?
A. Larger storage volumes support higher Provisioned IOPS rates: increase the provisioned volume
storage of each of the 6 EBS volumes to ITB
B. The EBS-Optimized throughput limits the total IOPS that can be utilized use an EBS-Optimized instance that provides larger throughput.
C. Small block sizes cause performance degradation, limiting the 1'0 throughput, configure the instance device driver and file system to use 64KB blocks to increase throughput.
D. RAID 0 only scales linearly to about 4 devices, use RAID 0 with 4 EBS Provisioned IOPS volumes but increase each Provisioned IOPS EBS volume to 6.000 IOPS.
E. The standard EBS instance root volume limits the total IOPS rate, change the instant root volume to also be a 500GB 4.000 Provisioned IOPS volume.
Answer: E
Q11. You have a number of image files to encode. In an Amazon SQS worker queue, you create an Amazon SQS message for each file specifying the command (jpeg-encode) and the location of the file in Amazon S3. Which of the following statements best describes the functionality of Amazon SQS?
A. Amazon SQS is a distributed queuing system that is optimized for horizontal scalability, not for single-threaded sending or receMng speeds.
B. Amazon SQS is for single-threaded sending or receMng speeds.
C. Amazon SQS is a non-distributed queuing system.
D. Amazon SQS is a distributed queuing system that is optimized for vertical scalability and for single-threaded sending or receMng speeds.
Answer: A
Explanation:
Amazon SQS is a distributed queuing system that is optimized for horizontal scalability, not for
single-threaded sending or receMng speeds. A single client can send or receive Amazon SQS messages at a rate of about 5 to 50 messages per second. Higher receive performance can be achieved by requesting multiple messages (up to 10) in a single call. It may take several seconds before a message that has been to a queue is available to be received.
Reference: http://media.amazonwebservices.com/AWS_Storage_Options.pdf
Q12. Can we attach an EBS volume to more than one EC2 instance at the same time?
A. Yes.
B. No
C. Only EC2-optimized EBS volumes.
D. Only in read mode.
Answer: A
Q13. Can you encrypt EBS volumes?
A. Yes, you can enable encryption when you create a new EBS volume using the AWS Management Console, API, or CLI.
B. No, you should use a third-party software to perform raw block-level encryption of an EBS volume.
C. Yes, but you must use a third-party API for encrypting data before it's loaded on EBS.
D. Yes, you can encrypt with the special "ebs_encrypt" command through Amazon APIs.
Answer: A
Explanation:
With Amazon EBS encryption, you can now create an encrypted EBS volume and attach it to a supported instance type. Data on the volume, disk I/O, and snapshots created from the volume are then all encrypted. The encryption occurs on the servers that host the EC2 instances, providing encryption of data as it moves between EC2 instances and EBS storage. EBS encryption is based on the industry standard AES-256 cryptographic algorithm.
To get started, simply enable encryption when you create a new EBS volume using the AWS Management Console, API, or CLI. Amazon EBS encryption is available for all the latest EC2 instances in all commercially available AWS regions.
Reference:
https://aws.amazon.com/about-aws/whats-new/2014/05/21/Amazon-EBS-encryption-now-avai|abIe/
Q14. What does Amazon Route53 provide?
A. A global Content Delivery Network.
B. None of these.
C. A scalable Domain Name System.
D. An SSH endpoint for Amazon EC2.
Answer: C
Q15. You are setting up a very complex financial services grid and so far it has 5 Elastic IP (EIP) addresses.
You go to assign another EIP address, but all accounts are limited to 5 Elastic IP addresses per region by default, so you aren't able to. What is the reason for this?
A. For security reasons.
B. Hardware restrictions.
C. Public (IPV4) internet addresses are a scarce resource.
D. There are only 5 network interfaces per instance.
Answer: C
Explanation:
Public (IPV4) internet addresses are a scarce resource. There is only a limited amount of public IP space available, and Amazon EC2 is committed to helping use that space efficiently.
By default, all accounts are limited to 5 Elastic IP addresses per region. If you need more than 5 Elastic IP addresses, AWS asks that you apply for your limit to be raised. They will ask you to think through your use case and help them understand your need for additional addresses.
Reference: http://aws.amazon.com/ec2/faqs/#How_many_instances_can_I_run_in_Amazon_EC2