EMT Practice Test

1. Question Content...

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Question1: An organization is deploying an application in a VPC that requires SSL mutual authentication with a client-side certificate, as that is the primary method of identifying clients. The Network Engineer has been tasked with defining the mechanism used within AWS to provide the SSL mutual authentication.
Which of the following options meets the organization's requirements?

Question2: An organization delivers high-resolution, dynamic web content. Internet users access the content from a variety of platforms, including mobile, tablet and desktop. Each platform receives a customized experience to account for the differences in viewing modes. A dedicated, automatic-scaling fleet of Amazon EC2 instances is used for each platform to server content based on path-based headers.
Which combination of services will MINIMIZE cost and MAXIMIZE performance? (Select two.)

Question3: A Network Engineer is designing a new system on AWS that will take advantage of Amazon CloudFront for both content caching and for protecting the underlying origin. There is concern that an external agency might be able to access the IP addresses for the application's origin and then attack the origin despite it being served by CloudFront. Which of the following solutions provides the strongest level of protection to the origin?

Question4: A legacy, on-premises web application cannot be load balances effectively. There are both planned and unplanned events that cause usage spikes to millions of concurrent users. The existing infrastructure cannot handle the usage spikes. The CIO has mandated that the application be moved to the cloud to avoid further disruptions, with the additional requirement that source IP addresses be unaltered to support network traffic-monitoring needs. Which of the following designs will meet these requirements?

Question5: A company uses a single connection to the internet when connecting its on-premises location to AWS. It has selected an AWS Partner Network (APN) Partner to provide a point-to-point circuit for its first-ever 10 Gbps AWS Direct Connect connection.
What steps must be taken to order the cross-connect at the Direct Connect location?

Question6: Under increased cybersecurity concerns, a company is deploying a near real-time intrusion detection system (IDS) solution. A system must be put in place as soon as possible. The architecture consists of many AWS accounts, and all results must be delivered to a central location.
Which solution will meet this requirement, while minimizing downtime and costs?

Question7: You have to set up an AWS Direct Connect connection to connect your on-premises to an AWS VPC. Due to budget requirements, you can only provision a single Direct Connect port. You have two border gateway routers at your on-premises data center that can peer with the Direct Connect routers for redundancy.
Which two design methodologies, in combination, will achieve this connectivity? (Select two.)

Question8: A company's application runs in a VPC and stores sensitive data in Amazon S3 The application's Amazon EC2 instances are located in a private subnet with a NAT gateway deployed in a public subnet to provide access to Amazon S3 The S3 bucket is located in the same AWS Region as the EC2 instances The company wants to ensure that this bucket can be accessed only from the VPC where the application resides
Which changes should a network engineer make to the architecture to meet these requirements?

Question9: You need to set up a VPN between AWS VPC and your on-premises network. You create a VPN connection in the AWS Management Console, download the configuration file, and install it on your on-premises router. The tunnel is not coming up because of firewall restrictions on your router. Which two network traffic options should you allow through the firewall? (Select two.)

Question10: Your hybrid networking environment consists of two application VPCs, a shared services VPC, and your corporate network. The corporate network is connected to the shared services VPC via an IPsec VPN with dynamic (BGP) routing enabled.
The applications require access to a common authentication service in the shared services VPC. You need to enable native network access from the corporate network to both application VPCs.
Which step should you take to meet the requirements?

Question11: A company installed an AWS Site-to-Site VPN and configured it to use two tunnels The company has learned that the VPN connectivity is unstable During a ping test from the on-premises data center to AWS: a network engineer notices that the first few ICMP replies time out but that subsequent requests are successful The AWS Management Console shows that the status for both tunnels last changed at the same time the ping responses were successfully received
Which steps should the network engineer take to resolve the instability*? (Select TWO )

Question12: A Network Engineer needs to create a public virtual interface on the company's AWS Direct Connect connection and only import routes which originated from the same region as the Direct Connect location.
What action should accomplish this?

Question13: The Payment Card Industry Data Security Standard (PCI DSS) merchants that handle credit card data must use strong cryptography. These merchants must also use security protocols to protect sensitive data during transmission over public networks.
You are migrating your PCI DSS application from on-premises SSL appliance and Apache to a VPC behind Amazon CloudFront.
How should you configure CloudFront to meet this requirement?

Question14: You are configuring a virtual interface for access to your VPC on a newly provisioned 1-Gbps AWS Direct Connect connection. Which two configuration values do you need to provide? (Select two.)

Question15: A space exploration company owns a series of telescopes that capture a large number of images and data of the night sky. The images and data are processed on an application hosted on AWS Fargate in a target group assigned to an Application Load Balancer (ALB). The application is made available through the address https /'space example com
Scientists require another custom-built application hosted on several Amazon EC2 instances within an Auto Scaling group. This application will be made available from the address https://space.example.com/meteor. The company needs a solution that can automatically scale from a small number of requests overnight to a large number of requests for a future meteor shower.
What is the MOST operationally efficient solution that meets these requirements?

Question16: An organization's Security team has a requirement that all data leaving its on-premises data center be encrypted at the network layer and use dedicated connectivity. There is also a requirement to centrally log all traffic flow in Amazon VPC environments. An AWS Direct Connect connection has been ordered to build out this design.
What steps should be taken to ensure that connectivity to AWS meets these security requirements? (Choose two.)

Question17: Changes made to a security group attached to an Application Load Balancer resulted in connectivity issues for a company's production web application. The Network Engineer needs to lock down permissions for the company's AWS account, automate auditing for any changes, and set up notifications.
What actions should accomplish this?

Question18: A Network Engineer is provisioning a subnet for a load balancer that will sit in front of a fleet of application servers in a private subnet. There is limited IP space left in the VPC CIDR. The application has few users now but is expected to grow quickly to millions of users.
What design will use the LEAST amount of IP space, while allowing for this growth?

Question19: A company uses multiple AWS accounts within AWS Organizations and has services deployed in a single AWS Region. The instances in a private subnet occasionally download patches from the internet through a NAT gateway The company recently migrated from VPC peering to AWS Transit Gateway The cumulative traffic through deployed NAT gateways Is less than 1Gbps The NAT gateway hourly charge contributes to most of the NAT gateway costs across all linked accounts.
What should the company do to reduce NAT gateway hourly costs?

Question20: You are preparing to launch Amazon WorkSpaces and need to configure the appropriate networking resources. What must be configured to meet this requirement?

Question21: This application uses proprietary TCP and UDP protocols on Amazon Elastic Compute Cloud (EC2) instances. End users run a real-time, front-end application on their local PCs. This front-end application knows the DNS hostname of the service.
You must prepare the system for global expansion. The end users must access the application with lowest latency.
How should you use AWS services to meet these requirements?

Question22: An organization wants to process sensitive information using the Amazon EMR service. The information is stored in on-premises databases. The output of processing will be encrypted using AWS KMS before it is uploaded to a customer-owned Amazon S3 bucket. The current configuration includes a VPS with public and private subnets, with VPN connectivity to the on-premises network. The security organization does not allow Amazon EC2 instances to run in the public subnet.
What is the MOST simple and secure architecture that will achieve the organization's goal?

Question23: A company is about to migrate an application from its on-premises data center to AWS. As part of the planning process, the following requirements involving DNS have been identified.
The organization's VPC uses the CIDR block 172.16.0.0/16.
Assuming that there is no DNS namespace overlap, how can these requirements be met?

Question24: You run a well-architected, multi-AZ application in the eu-central-1 (Frankfurt) AWS region. The application is hosted in a VPC and is only accessed from the corporate network. To support large volumes of data transfer and administration of the application, you use a single 10-Gbps AWS Direct Connect connection with multiple private virtual interfaces. As part of a review, you decide to improve the resilience of your connection to AWS and make sure that any additional connectivity does not share the same Direct Connect routers at AWS. You need to provide the best levels of resilience to meet the application's needs.
Which two options should you consider? (Select two.)

Question25: A company has a hybrid environment across its on-premises network and the AWS Cloud The company wants to use Amazon Elastic File System (Amazon EFS) to store and share data between on-premises services that are required to resolve DNS queries through on-premises DNS servers The company wants to use a custom domain name to connect to Amazon EFS The company also wants to avoid using the Amazon EFS target IP address.
What should a network engineer do to meet these requirements?

Question26: A company provisions an AWS Direct Connect connection to permit access to Amazon EC2 resources in several Amazon VPCs and to data stored in private Amazon S3 buckets. The Network Engineer needs to configure the company's on-premises router for this Direct Connect connection.
Which of the following actions will require the LEAST amount of configuration overhead on the customer router?

Question27: The Web Application Development team is worried about malicious activity from 200 random IP addresses. Which action will ensure security and scalability from this type of threat?

Question28: A network engineer is managing two AWS Direct Connect connections. Each connection has a public virtual interface configured with a private ASN. The engineer wants to configure active/passive routing between the Direct Connect connections to access Amazon public endpoints. What BGP configuration is required for the on-premises equipment? (Select two.)

Question29: An organization is using a VPC endpoint for Amazon S3. When the security group rules for a set of instances were initially configured, access was restricted to allow traffic only to the IP addresses of the Amazon S3 API endpoints in the region from the published JSON file. The application was working properly, but now is logging a growing number of timeouts when connecting with Amazon S3. No internet gateway is configured for the VPC.
Which solution will fix the connectivity failures with the LEAST amount of effort?

Question30: An organization has multiple applications running in VPCs across multiple AWS accounts. The network engineer has deployed a central VPC with a pair of software VPN instances that run IPSec tunnels with dynamic routing to VGWs of all application VPCs. This central VPC is connected to on-premises resources via a Direct Connect connection using a private VIF.
What additional configuration is required to enable the applications in VPCs to communicate with each other and access on-premises resources?

Question31: A company has two redundant AWS Direct Connect connections to a VPC. The VPC is configured using BGP metrics so that one Direct Connect connection is used as the primary traffic path. The company wants the primary Direct Connect connection to fail to the secondary in less than one second.
What should be done to meet this requirement?

Question32: An architecture is being designed to support an Amazon WorkSpaces deployment of 1,000 desktops.
Which architecture will support this deployment while allowing for future expansion?

Question33: A company is connecting to a VPC over an AWS Direct Connect using a private VIF, and a dynamic VPN connection as a backup. The company's Reliability Engineering team has been running failover and resiliency tests on the network and the existing VPC by simulating an outage situation on the Direct Connect connection. During the resiliency tests, traffic failed to switch over to the backup VPN connection.
How can this failure be troubleshot?

Question34: A network engineer is deploying an application on an Amazon EC2 instance. The instance is reachable within the VPC through its private IP address and from the internet using an elastic IP address. Clients are connecting to the instance over the Internet and within the VPC, and the application needs to be identified by a single custom Fully Qualified Domain Name that is publicly resolvable -'app.example.com'.
Instances within the VPC should always connect to the private IP to minimize data transfer costs.
How should the engineer configure DNS to support these requirements?

Question35: A company has two on-premises data center locations. There is a company-managed router at earn data center. Each data center has a dedicated AWS Direct Connect connection to a Direct Connect gateway through a private virtual interface The router for the first location is advertising 110 routes to the Direct Connect gateway by using BGP and the router tor the second location is advertising 60 routes to the Direct Connect gateway by using BGP The Direct Connect gateway is attached to a company VPC through a virtual private gateway
A network engineer receives reports that resources In the VPC are not reachable from various locations in either data center. The network engineer checks the VPC route table and sees that the routes from the first data center. location are not being populated into the route table The network engineer must resolve this issue in the most operationally efficient manner
What should the network engineer do to meet these requirements'

Question36: Your company has set up AWS Direct Connect to connect on-premises to an Amazon VPC instance. Two Direct Connect connections terminate at two different Direct Connect locations. You are using two routers, R1 and R2, at your end (one of each Direct Connect connection). R1 and R2 do NOT have connectivity between them. Both routers advertise the same routers over BGP to the VGW. You have a stateful firewall on each router. The routers drop some of the traffic coming from the VPC.
Which two actions should you take to fix this problem? (Select two.)

Question37: A company has a VPC in the us-west-1 Region and another VPC in the ap-southeast-2 Region Network engineers set up an AWS Direct Connect connection from their data center to the us-east-1 Region They create a private virtual interface (VIF) that references a Direct Connect gateway, which is then connected to virtual private gateways in both VPCs When the setup is complete, the engineers cannot access resources in us-west-1 from ap-southeast-2
What should the network engineers do to resolve this issued

Question38: An organization processes consumer information submitted through its website. The organization's security policy requires that personally identifiable information (PII) elements are specifically encrypted at all times and as soon as feasible when received. The front-end Amazon EC2 instances should not have access to decrypted PII. A single service within the production VPC must decrypt the PII by leveraging an iAM role.
Which combination of services will support these requirement? (Select two.)

Question39: A company has deployed a production environment in the AWS Cloud The environment is contained in a VPC and includes a virtual private gateway The company has established an AWS Direct Connect connection which includes a private virtual interface (VIF) and a VPN connection to the on-premises data center
For traffic originating in the VPC what is the order of BGP path selection from MOST preferred to LEAST preferred?

Question40: A gaming company is running an online multiplayer game in multiple AWS Regions The company needs traffic from its end users to be routed to the Region that is closest to the end users geographically When maintenance occurs in a Region, traffic must be routed to the next closest Region with no changes to the IP addresses being used as connections by the end users
Which solution will meet these requirements?

Question41: An organization has three AWS accounts with each containing VPCs in Virginia, Canada and the Sydney regions. The organization wants to determine whether all available Elastic IP addresses (EIPs) in these accounts are attached to Amazon EC2 instances or in use elastic network interfaces (ENIs) in all of the specified regions for compliance and cost-optimization purposes.
Which of the following meets the requirements with the LEAST management overhead?

Question42: A Network Engineer has enabled VPC Flow Logs to troubleshoot an ICMP reachability issue for an echo reply from an Amazon EC2 instance. The flow logs reveal an ACCEPT record for the request from the client to the EC2 instance, and a REJECT record for the response from the EC2 instance to the client.
What is the MOST likely reason for there to be a REJECT record?

Question43: A company has an AWS Direct Connect connection between its on-premises data center and Amazon VPC. An application running on an Amazon EC2 instance in the VPC needs to access confidential data stored in the on-premises data center with consistent performance For compliance purposes, data encryption is required.
What should the network engineer do to meet these requirements?

Question44: You need to set up an Amazon Elastic Compute Cloud (EC2) instance for an application that requires the lowest latency and the highest packet-per-second network performance. The application will talk to other servers in a peered VPC.
Which two of the following components should be part of the design? (Select two.)

Question45: A company has 225 mobile and desktop devices and 300 partner VPNs that need access to an AWS VPC. VPN users should not be able to reach one another. Which approach will meet the technical and security requirements while minimizing costs?

Question46: A company has recently established an AWS Direct Connect connection from its on-premises data center to AWS. A Network Engineer has blocked all traffic destined for Amazon S3 over the company's gateway to the internet from its on-premises firewall. S3 traffic should only traverse the Direct Connect connection. Currently, no one in the on-premises data center can access Amazon S3.
Which solution will resolve this connectivity issue?

Question47: A company wants to migrate its workloads to the AWS Cloud. The company has two web applications and wants to run them in separate, isolated VPCs. The company needs to use Elastic Load Balancing to distribute requests between application instances.
For security reasons, internet gateways must not be attached to the application VPCs. Inbound HTTP requests to the application must be routed through a centralized VPC. and the application VPCs must not be exposed to any other inbound traffic The application VPCs cannot be allowed to initiate any outbound connections
What should a network engineer do to meet these requirements?

Question48: A company uses a newly provisioned 1-Gbps AWS Direct Connect connection to configure a virtual interface for access to Amazon S3
Which configuration values is the network engineer required to provide? (Select TWO.)

Question49: The Security department has mandated that all outbound traffic from a VPC toward an on-premises datacenter must go through a security appliance that runs on an Amazon EC2 instance.
Which of the following maximizes network performance on AWS? (Choose two.)

Question50: You currently use a single security group assigned to all nodes in a clustered NoSQL database. Only your cluster members in one region must be able to connect to each other. This security group uses a self-referencing rule using the cluster security group's group-id to make it easier to add or remove nodes from the cluster. You need to make this database comply with out-of-region disaster recovery requirements and ensure that the network traffic between the nodes is encrypted when travelling between regions. How should you enable secure cluster communication while deploying additional cluster members in another AWS region?

Question51: You use a VPN to extend your corporate network into a VPC. Instances in the VPC are able to resolve resource records in an Amazon Route 53 private hosted zone. Your on-premises DNS server is configured with a forwarder to the VPC DNS server IP address. On-premises users are unable to resolve names in the private hosted zone, although instances in a peered VPC can.
What should you do to provide on-premises users with access to the private hosted zone?

Question52: A company has a hybrid architecture with dual AWS Direct Connect connections and applications running in the AWS Cloud and on premises The company uses its on-premises DNS servers to provide name resolution tor its internal domain company com The company uses an Amazon Route 53 private hosted zone, aws company com for resolution of AWS resource records
A new application that runs on Amazon EC2 in the company's VPC needs to resolve records in the company.com domain and on other AWS resources
What should the company do to meet these requirements?