EMT Practice Test

1. Question Content...

---

Question1: You are implementing a URL whitelisting system for a company that wants to restrict outbound HTTP'S connections to specific domains from their EC2-hosted applications. You deploy a single EC2 instance running proxy software and configure It to accept traffic from all subnets and EC2 instances in the VPC. You configure the proxy to only pass through traffic to domains that you define in its whitelist configuration. You have a nightly maintenance window or 10 minutes where all instances fetch new software updates. Each update Is about 200MB In size and there are 500 instances In the VPC that routinely fetch updates. After a few days you notice that some machines are failing to successfully download some, but not all of their updates within the maintenance window. The download URLs used for these updates are correctly listed in the proxy's whitelist configuration and you are able to access them manually using a web browser on the instances.
What might be happening? (Choose 2)

Question2: A user has created a VPC with public and private subnets. The VPC has CIDR 20.0.0.0/16. The private subnet uses CIDR 20.0.1.0/24 and the public subnet uses CIDR 20.0.0.0/24. The user is planning to host a web server in the public subnet (port 80) and a DB server in the private subnet (port 3306). The user is configuring a security group of the NAT instance.
Which of the below mentioned entries is not required in NAT's security group for the database servers to connect to the Internet for software updates?

Question3: A company is running a high-user-volume media-sharing application on premises. It currently hosts about 400 TB of data with millions of video files. The company is migrating this application to AWS to improve reliability and reduce costs.
The Solutions Architecture team plans to store the videos in an Amazon S3 bucket and use Amazon CloudFront to distribute videos to users. The company needs to migrate this application to AWS 10 days with the least amount of downtime possible. The company currently has 1 Gbps connectivity to the Internet with 30 percent free capacity.
Which of the following solutions would enable the company to migrate the workload to AWS and meet all of the requirements?

Question4: A company manages more than 200 separate internet-facing web applications. All of the applications are deployed to AWS in a single AWS Region The fully qualified domain names (FQDNs) of all of the applications are made available through HTTPS using Application Load Balancers (ALBs). The ALBs are configured to use public SSL/TLS certificates.
A Solutions Architect needs to migrate the web applications to a multi-region architecture. All HTTPS services should continue to work without interruption.
Which approach meets these requirements?

Question5: A company must deploy multiple independent instances of an application. The front-end application is internet accessible. However, corporate policy stipulates that the backends are to be isolated from each other and the internet, yet accessible from a centralized administration server. The application setup should be automated to minimize the opportunity for mistakes as new instances are deployed.
Which option meets the requirements and MINIMIZES costs?

Question6: You are designing a data leak prevention solution for your VPC environment. You want your VPC Instances to be able to access software depots and distributions on the Internet for product updates. The depots and distributions are accessible via third party CDNs by their URLs. You want to explicitly deny any other outbound connections from your VPC instances to hosts on the internet.
Which of the following options would you consider?

Question7: Within the IAM service a GROUP is regarded as a:

Question8: You are designing a photo-sharing mobile app. The application will store all pictures in a single Amazon S3 bucket.
Users will upload pictures from their mobile device directly to Amazon S3 and will be able to view and download their own pictures directly from Amazon S3.
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?

Question9: An organization is creating a VPC for their application hosting. The organization has created two private subnets in the same AZ and created one subnet in a separate zone.
The organization wants to make a HA system with the internal ELB.
Which of these statements is true with respect to an internal ELB in this scenario?

Question10: In order for a table write to succeed, the provisioned throughput settings for the table and global secondary indexes, in DynamoDB, must have__________; otherwise, the write to the table will be throttled.

Question11: You're trying to delete an SSL certificate from the IAM certificate store, and you're getting the message
"Certificate: <certificate-id> is being used by CloudFront."
Which of the following statements is probably the reason why you are getting this error?

Question12: A user is planning to host a Highly Available system on the AWS VPC. Which of the below mentioned statements is helpful in this scenario?

Question13: An organization is setting up their website on AWS. The organization is working on various security measures to be performed on the AWS EC2 instances.
Which of the below mentioned security mechanisms will not help the organization to avoid future data leaks and identify security weaknesses?

Question14: A Solutions Architect is designing a system that will collect and store data from 2,000 internet-connected sensors. Each sensor produces 1 KB of data every second. The data must be available for analysis within a few seconds of it being sent to the system and stored for analysis indefinitely.
Which is the MOST cost-effective solution for collecting and storing the data?

Question15: In an AWS CloudFormation template, each resource declaration includes:

Question16: True or false: In CloudFormation, you cannot create an Amazon RDS DB instance from a snapshot.

Question17: You have just added a new instance to your Auto Scaling group, which receives ELB health checks. An ELB heath check says the new instance's state is out of Service.
What does Auto Scaling do in this particular scenario?

Question18: A Development team is deploying new APIs as serverless applications within a company. The team is currently using the AWS Management Console to provision Amazon API Gateway, AWS Lambda, and Amazon DynamoDB resources. A Solutions Architect has been tasked with automating the future deployments of these serverless APIs.
How can this be accomplished?

Question19: A company is running a large application on-premises. Its technology stack consists of Microsoft .NET for the web server platform and Apache Cassandra for the database. The company wants to migrate the application to AWS to improve service reliability. The IT team also wants to reduce the time it spends on capacity management and maintenance of this infrastructure. The Development team is willing and available to make code changes to support the migration.
Which design is the LEAST complex to manage after the migration?

Question20: A company is running a batch analysis every hour on their main transactional DB, running on an RDS MySQL instance, to populate their central Data Warehouse running on Redshift. During the execution of the batch, their transactional applications are very slow. When the batch completes they need to update the top management dashboard with the new data. The dashboard is produced by another system running on-premises that is currently started when a manually-sent email notifies that an update is required. The on-premises system cannot be modified because is managed by another team.
How would you optimize this scenario to solve performance issues and automate the process as much as possible?

Question21: Which of the following statements is correct about AWS Direct Connect?

Question22: In Amazon VPC, what is the default maximum number of BGP advertised routes allowed per route table?

Question23: If no explicit deny is found while applying IAM's Policy Evaluation Logic, the enforcement code looks for any
______ instructions that would apply to the request.

Question24: Which of following IAM policy elements lets you specify an exception to a list of actions?

Question25: Which status represents a failure state in AWS CloudFormation?

Question26: You want to mount an Amazon EFS file system on an Amazon EC2 instance using DNS names. Which of the following generic form of a mount target's DNS name must you use to mount the file system?

Question27: You have subscribed to the AWS Business and Enterprise support plan.
Your business has a backlog of problems, and you need about 20 of your IAM users to open technical support cases.
How many users can open technical support cases under the AWS Business and Enterprise support plan?

Question28: A company ingests and processes streaming market data. The data rate is constant. A nightly process that calculates aggregate statistics is run, and each execution takes about 4 hours to complete. The statistical analysis is not mission critical to the business, and previous data points are picked up on the next execution if a particular run fails.
The current architecture uses a pool of Amazon EC2 Reserved Instances with 1-year reservations running full time to ingest and store the streaming data in attached Amazon EBS volumes. On-Demand EC2 instances are launched each night to perform the nightly processing, accessing the stored data from NFS shares on the ingestion servers, and terminating the nightly processing servers when complete. The Reserved Instance reservations are expiring, and the company needs to determine whether to purchase new reservations or implement a new design.
Which is the most cost-effective design?

Question29: The following are AWS Storage services? Choose 2.

Question30: You are responsible for a legacy web application whose server environment is approaching end of life You would like to migrate this application to AWS as quickly as possible, since the application environment currently has the following limitations:
* The VM's single 10GB VMDK is almost full;
* Me virtual network interface still uses the 10Mbps driver, which leaves your 100Mbps WAN connection completely underutilized;
* It is currently running on a highly customized. Windows VM within a VMware environment;
* You do not have me installation media;
This is a mission critical application with an RTO (Recovery Time Objective) of 8 hours. RPO (Recovery Point Objective) of 1 hour.
How could you best migrate this application to AWS while meeting your business continuity requirements?

Question31: In Amazon Redshift, how many slices does a dw2.8xlarge node have?

Question32: In the context of policies and permissions in AWS IAM, the Condition element is ____________.

Question33: An organization hosts an app on EC2 instances which multiple developers need access to in order to perform updates.
The organization plans to implement some security best practices related to instance access.
Which one of the following recommendations will not help improve its security in this way?

Question34: Which of the following is not included in the metrics sent from Billing to Amazon CloudWatch?

Question35: You are setting up some EBS volumes for a customer who has requested a setup which includes a RAID (redundant array of inexpensive disks). AWS has some recommendations for RAID setups.
Which RAID setup is not recommended for Amazon EBS?

Question36: IAM Secure and Scalable is an organization which provides scalable and secure SAAS to its clients. They are planning to host a web server and App server on AWS VPC as separate tiers. The organization wants to implement the scalability by configuring Auto Scaling and load balancer with their app servers (middle tier) too.
Which of the below mentioned options suits their requirements?

Question37: You have launched an EC2 instance with four (4) 500 GB EBS Provisioned IOPS volumes attached. The EC2 instance is EBS-Optimized and supports 500 Mbps throughput between EC2 and EBS. The four EBS volumes are configured as a single RAID 0 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 I/O 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?

Question38: Which of the following should be followed before connecting to Amazon Virtual Private Cloud (Amazon VPC) using AWS Direct Connect?

Question39: An AWS account owner has setup multiple IAM users. One of these IAM users, named John, has CloudWatch access, but no access to EC2 services. John has setup an alarm action which stops EC2 instances when their CPU utilization is below the threshold limit.
When an EC2 instance's CPU Utilization rate drops below the threshold John has set, what will happen and why?

Question40: An organization is purchasing licensed software. The software license can be registered only to a specific MAC Address. The organization is going to host the software in the AWS environment.
How can the organization fulfil the license requirement as the MAC address changes every time an instance is started/stopped/terminated?

Question41: Can Provisioned IOPS be used on RDS instances launched in a VPC?

Question42: An organization is setting up an application on AWS to have both High Availability (HA) and Disaster Recovery (DR). The organization wants to have both Recovery point objective (RPO) and Recovery time objective (RTO) of 10 minutes.
Which of the below mentioned service configurations does not help the organization achieve the said RPO and RTO?

Question43: Which statement is NOT true about a stack which has been created in a Virtual Private Cloud (VPC) in AWS OpsWorks?

Question44: An IAM user is trying to perform an action on an object belonging to some other root account's bucket.
Which of the below mentioned options will AWS S3 not verify?

Question45: A user has configured an EC2 instance in the US-East-1a zone. The user has enabled detailed monitoring of the instance. The user is trying to get the data from CloudWatch using a CLI.
Which of the below mentioned CloudWatch endpoint URLs should the user use?

Question46: The CISO of a large enterprise with multiple IT departments, each with its own AWS account, wants one central place where AWS permissions for users can be managed and users authentication credentials can be synchronized with the company's existing on-premises solution.
Which solution will meet the CISO's requirements?

Question47: Identify a correct statement about the expiration date of the "Letter of Authorization and Connecting Facility Assignment (LOA-CFA)," which lets you complete the Cross Connect step of setting up your AWS Direct Connect.

Question48: An organization is planning to extend their data center by connecting their DC with the AWS VPC using the VPN gateway. The organization is setting up a dynamically routed VPN connection.
Which of the below mentioned answers is not required to setup this configuration?

Question49: Which of the following is true of Amazon EBS encryption keys?

Question50: If I write the below command, what does it do?
ec2-run ami-e3a5408a -n 20 -g appserver

Question51: A user has launched an EBS optimized instance with EC2. Which of the below mentioned options is the correct statement?

Question52: What combination of steps could a Solutions Architect take to protect a web workload running on Amazon EC2 from DDoS and application layer attacks? (Select two.)

Question53: A company has a High Performance Computing (HPC) cluster in its on-premises data center which runs thousands of jobs in parallel for one week every month, processing petabytes of images. The images are stored on a network file server, which is replicated to a disaster recovery site. The on-premises data center has reached capacity and has started to spread the jobs out over the course of month in order to better utilize the cluster, causing a delay in the job completion.
The company has asked its Solutions Architect to design a cost-effective solution on AWS to scale beyond the current capacity of 5,000 cores and 10 petabytes of data. The solution must require the least amount of management overhead and maintain the current level of durability.
Which solution will meet the company's requirements?

Question54: True or False: "In the context of Amazon ElastiCache, from the application's point of view, connecting to the cluster configuration endpoint is no different than connecting directly to an individual cache node."

Question55: A large company experienced a drastic increase in its monthly AWS spend. This is after Developers accidentally launched Amazon EC2 instances in unexpected regions. The company has established practices around least privileges for Developers and controls access to on-premises resources using Active Directory groups. The company now wants to control costs by restricting the level of access that Developers have to the AWS Management Console without impacting their productivity. The company would also like to allow Developers to launch Amazon EC2 in only one region, without limiting access to other services in any region.
How can this company achieve these new security requirements while minimizing the administrative burden on the Operations team?

Question56: You are implementing AWS Direct Connect. You intend to use AWS public service end points such as Amazon S3, across the AWS Direct Connect link. You want other Internet traffic to use your existing link to an Internet Service Provider.
What is the correct way to configure AWS Direct connect for access to services such as Amazon S3?

Question57: Which AWS instance address has the following characteristics? :"If you stop an instance, its Elastic IP address is unmapped, and you must remap it when you restart the instance."

Question58: A customer has a website which shows all the deals available across the market. The site experiences a load of
5 large EC2 instances generally.
However, a week before Thanksgiving vacation they encounter a load of almost 20 large instances. The load during that period varies over the day based on the office timings.
Which of the below mentioned solutions is cost effective as well as help the website achieve better performance?

Question59: A user has created a VPC with CIDR 20.0.0.0/16. The user has created one subnet with CIDR 20.0.0.0/16 in this VPC. The user is trying to create another subnet with the same VPC for CIDR 20.0.0.1/24.
What will happen in this scenario?

Question60: What is the network performance offered by the c4.8xlarge instance in Amazon EC2?

Question61: You are designing the network infrastructure for an application server in Amazon VPC. Users will access all application instances from the Internet, as well as from an on-premises network. The on-premises network is connected to your VPC over an AWS Direct Connect link.
How would you design routing to meet the above requirements?

Question62: Over which of the following Ethernet standards does AWS Direct Connect link your internal network to an AWS Direct Connect location?

Question63: A Solutions Architect is designing a highly available and reliable solution for a cluster of Amazon EC2 instances.
The Solutions Architect must ensure that any EC2 instance within the cluster recovers automatically after a system failure. The solution must ensure that the recovered instance maintains the same IP address.
How can these requirements be met?

Question64: A user authenticating with Amazon Cognito will go through a multi-step process to bootstrap their credentials.
Amazon Cognito has two different flows for authentication with public providers.
Which of the following are the two flows?

Question65: A user has launched a dedicated EBS backed instance with EC2. You are curious where the EBS volume for this instance will be created.
Which statement is correct about the EBS volume's creation?

Question66: A media company has a 30-TB repository of digital news videos. These videos are stored on tape in an on-premises tape library and referenced by a Media Asset Management (MAM) system. The company wants to enrich the metadata for these videos in an automated fashion and put them into a searchable catalog by using a MAM feature. The company must be able to search based on information in the video, such as objects, scenery items, or people's faces. A catalog is available that contains faces of people who have appeared in the videos that include an image of each person. The company would like to migrate these videos to AWS.
The company has a high-speed AWS Direct Connect connection with AWS and would like to move the MAM solution video content directly from its current file system.
How can these requirements be met by using the LEAST amount of ongoing management overhead and causing MINIMAL disruption to the existing system?

Question67: A large real-estate brokerage is exploring the option of adding a cost-effective location based alert to their existing mobile application. The application backend infrastructure currently runs on AWS. Users who opt in to this service will receive alerts on their mobile device regarding real-estate otters in proximity to their location. For the alerts to be relevant delivery time needs to be in the low minute count the existing mobile app has 5 million users across the US.
Which one of the following architectural suggestions would you make to the customer?

Question68: A company has asked a Solutions Architect to design a secure content management solution that can be accessed by API calls by external customer applications. The company requires that a customer administrator must be able to submit an API call and roll back changes to existing files sent to the content management solution, as needed.
What is the MOST secure deployment design that meets all solution requirements?

Question69: An organization (account ID 123412341234) has configured the IAM policy to allow the user to modify his credentials.
What will the below mentioned statement allow the user to perform?

Question70: An organization has hosted an application on the EC2 instances. There will be multiple users connecting to the instance for setup and configuration of application. The organization is planning to implement certain security best practices.
Which of the below mentioned pointers will not help the organization achieve better security arrangement?

Question71: Your company is storing millions of sensitive transactions across thousands of 100-GB files that must be encrypted in transit and at rest. Analysts concurrently depend on subsets of files, which can consume up to 5 TB of space, to generate simulations that can be used to steer business decisions.
You are required to design an AWS solution that can cost effectively accommodate the long-term storage and in-flight subsets of data.
Which approach can satisfy these objectives?

Question72: An enterprise runs 103 line-of-business applications on virtual machines in an on-premises data center. Many of the applications are simple PHP, Java, or Ruby web applications, are no longer actively developed, and serve little traffic.
Which approach should be used to migrate these applications to AWS with the LOWEST infrastructure costs?

Question73: A company has an Amazon EC2 deployment that has the following architecture:
* An application tier that contains 8 m4.xlarge instances
* A Classic Load Balancer
* Amazon S3 as a persistent data store
After one of the EC2 instances fails, users report very slow processing of their requests. A Solutions Architect must recommend design changes to maximize system reliability. The solution must minimize costs.
What should the Solution Architect recommend?

Question74: A user is creating a snapshot of an EBS volume. Which of the below statements is incorrect in relation to the creation of an EBS snapshot?

Question75: A company uses Amazon S3 to store documents that may only be accessible to an Amazon EC2 instance in a certain virtual private cloud (VPC). The company fears that a malicious insider with access to this instance could also set up an EC2 instance in another VPC to access these documents.
Which of the following solutions will provide the required protection?

Question76: A user has configured EBS volume with PIOPS. The user is not experiencing the optimal throughput.
Which of the following could not be factor affecting I/O performance of that EBS volume?

Question77: When configuring your customer gateway to connect to your VPC, the________Association is established first between the virtual private gateway and customer gateway using the Pre-Shared Key as the authenticator.

Question78: An elastic network interface (ENI) is a virtual network interface that you can attach to an instance in a VPC.
An ENI can include one public IP address, which can be auto-assigned to the elastic network interface for eth0 when you launch an instance, but only when you_____.

Question79: A user is sending a custom metric to CloudWatch. If the call to the CloudWatch APIs has different dimensions, but the same metric name, how will CloudWatch treat all the requests?

Question80: ____________pricing offers significant savings over the normal price of DynamoDB provisioned throughput capacity.

Question81: A user has created a VPC with a public subnet. The user has terminated all the instances which are part of the subnet.
Which of the below mentioned statements is true with respect to this scenario?

Question82: A user has created a VPC with CIDR 20.0.0.0/16. The user has created one subnet with CIDR 20.0.0.0/16 by mistake. The user is trying to create another subnet of CIDR 20.0.1.0/24.
How can the user create the second subnet?

Question83: Which of the following is NOT true of the DynamoDB Console?

Question84: A Solutions Architect is redesigning an image-viewing and messaging platform to be delivered as SaaS.
Currently, there is a farm of virtual desktop infrastructure (VDI) that runs a desktop image-viewing application and a desktop messaging application. Both applications use a shared database to manage user accounts and sharing. Users log in from a web portal that launches the applications and streams the view of the application on the user's machine. The Development Operations team wants to move away from using VDI and wants to rewrite the application.
What is the MOST cost-effective architecture that offers both security and ease of management?

Question85: A company has an application that runs a web service on Amazon EC2 instances and stores .jpg images in Amazon S3. The web traffic has a predictable baseline, but often demand spikes unpredictably for short periods of time. The application is loosely coupled and stateless. The .jpg images stored in Amazon S3 are accessed frequently for the first 15 to 20 days, they are seldom accessed thereafter but always need to be immediately available. The CIO has asked to find ways to reduce costs.
Which of the following options will reduce costs? (Choose two.)

Question86: Your company policies require encryption of sensitive data at rest. You are considering the possible options for protecting data while storing it at rest on an EBS data volume, attached to an EC2 instance.
Which of these options would allow you to encrypt your data at rest? (Choose 3)

Question87: How does AWS Data Pipeline execute activities on on-premise resources or AWS resources that you manage?

Question88: When you put objects in Amazon S3, what is the indication that an object was successfully stored?

Question89: A company runs a video processing platform. Files are uploaded by users who connect to a web server, which stores them on an Amazon EFS share. This web server is running on a single Amazon EC2 instance. A different group of instances, running in an Auto Scaling group, scans the EFS share directory structure for new files to process and generates new videos (thumbnails, different resolution, compression, etc.) according to the instructions file, which is uploaded along with the video files. A different application running on a group of instances managed by an Auto Scaling group processes the video files and then deletes them from the EFS share. The results are stored in an S3 bucket. Links to the processed video files are emailed to the customer.
The company has recently discovered that as they add more instances to the Auto Scaling Group, many files are processed twice, so image processing speed is not improved. The maximum size of these video files is
2GB.
What should the Solutions Architect do to improve reliability and reduce the redundant processing of video files?