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Exam Code: 200-150
Exam Name: DCICN Introducing Cisco Data Center Networking
Updated: Aug 11, 2017
Q&As: 91
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Exam A
QUESTION 1You 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 tor the next 24 hours.
Which of the following is the best method to quickly and temporarily deny access from the spec- ified IP
address block?
A. Create an AD policy to modify Windows Firewall settings on all hosts in the VPC to deny ac- cess from
the IP address block
B. Modify the Network ACLs associated with all public subnets in the VPC to deny access from the IP
address block
C. Add a rule to all of the VPC 5 Security Groups to deny access from the IP address block
D. Modify the Windows Firewall settings on all Amazon Machine Images (AMIs) that your or- ganization
uses in that VPC to deny access from the IP address blockCorrect Answer: CExplanation
Explanation/Reference: 200-150 examQUESTION 1You 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 tor the next 24 hours.
Which of the following is the best method to quickly and temporarily deny access from the spec- ified IP
address block?
A. Create an AD policy to modify Windows Firewall settings on all hosts in the VPC to deny ac- cess from
the IP address block
B. Modify the Network ACLs associated with all public subnets in the VPC to deny access from the IP
address block
C. Add a rule to all of the VPC 5 Security Groups to deny access from the IP address block
D. Modify the Windows Firewall settings on all Amazon Machine Images (AMIs) that your or- ganization
uses in that VPC to deny access from the IP address blockCorrect Answer: CExplanation
Reference:QUESTION 2When preparing for a compliance assessment of your system built inside of AWS. what are three best
practices for you to prepare for anaudit? Choose 3 answers
A. Gather evidence of your IT operational controls
B. Request and obtain applicable third-party audited AWS compliance reports and certifications
C. Request and obtain a compliance and security tour of an AWS data center for a pre-assess- ment
security review
D. Request and obtain approval from AWS to perform relevant network scans and in-depth pene- tration
tests of your system's Instances and endpoints
E. Schedule meetings with AWS's third-party auditors to provide evidence of AWS compliance that maps
to your control objectivesCorrect Answer: BDEExplanation
QUESTION 3You 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 (&B) 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 in- stances.
What do you need to fix to balance the instances across AZs?
A. Set the ELB to only be attached to another AZ
B. Make sure Auto Scaling is configured to launch in both AZs
C. Make sure your AMI is available in both AZs
D. Make sure the maximum size of the Auto Scaling Group is greater than 4Correct Answer: BExplanation: 200-150 dumps
QUESTION 4
You have been asked to leverage Amazon VPC BC2 and SOS to implement an application that submitsand 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 (he most scalable solution for communicating between the application and SOS?
A. Ensure the application instances are properly configured with an Elastic Load Balancer
B. Ensure the application instances are launched in private subnets with the EBS-optimized op- tion
enabled
C. Ensure the application instances are launched in public subnets with the associate-pub- lic-IP
address=true option enabled
D. Launch application instances in private subnets with an Auto Scaling group and Auto Scaling triggers
configured to watch the SOS queue sizeCorrect Answer: CExplanation
Explanation/Reference:Reference:
http://www.cardinalpath.com/autoscaling-your-website-with-amazon-web-services-part-2/QUESTION 5You have identified network throughput as a bottleneck on your ml small EC2 instance when up- loading
data Into Amazon S3 In the same region.
How do you remedy this situation?
A. Add an additional ENI
B. Change to a larger Instance
C. Use DirectConnect between EC2 and S3
D. Use EBS PIOPS on the local volumeCorrect Answer: BExplanation
Explanation/Reference:
200-150 pdf Reference:QUESTION 6When attached to an Amazon VPC which two components provide connectivity with external networks?
Choose 2 answers
A. Elastic IPS (EIP)
B. NAT Gateway (NAT)
C. Internet Gateway {IGW)
D. Virtual Private Gateway (VGW)Correct Answer: CDExplanation
QUESTION 7Your 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 de- mand is 175.
What should you do to avoid potential service disruptions during the ramp up in traffic?
A. Ensure that you have pre-allocated 175 Elastic IP addresses so that each server will be able to obtain
one as it launches
B. Check the service limits in Trusted Advisor and adjust as necessary so the forecasted count re- mains
within limits.
C. Change your Auto Scaling configuration to set a desired capacity of 175 prior to the launch of the
marketing campaign
D. Pre-warm your Elastic Load Balancer to match the requests per second anticipated during peak
demand prior to the marketing campaignCorrect Answer: D Explanation: 200-150 pdf
QUESTION 8You have an Auto Scaling group associated with an Elastic Load Balancer (ELB). You have no- ticed 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 termi- nated and
replaced?
A. Change the thresholds set on the Auto Scaling group health check
B. Add an Elastic Load Balancing health check to your Auto Scaling group
C. Increase the value for the Health check interval set on the Elastic Load Balancer
D. Change the health check set on the Elastic Load Balancer to use TCP rather than HTTP checksCorrect Answer: BExplanation
Explanation/Reference:Reference:
Add an Elastic Load Balancing Health Check to your Auto Scaling Group
By default, an Auto Scaling group periodically reviews the results of EC2 instance status to determine the
health state of each instance. However, if you have associated your Auto Scaling group with an Elastic
Load Balancing load balancer, you can choose to use the Elastic Load Balancing health check. In this
case, Auto Scaling determines the health status of your instances by checking the results of both the EC2
instance status check and the Elastic Load Balancing instance health check.
For information about EC2 instance status checks, see Monitor Instances With Status Checks in the
Amazon EC2 User Guide for Linux Instances. For information about Elastic Load Balancing health checks,
see Health Check in the Elastic Load Balancing Developer Guide.
This topic shows you how to add an Elastic Load Balancing health check to your Auto Scaling group,
assuming that you have created a load balancer and have registered the load balancer with your Auto
Scaling group. If you have not registered the load balancer with your Auto Scaling group, see Set Up a
Scaled and Load-Balanced Application.
Auto Scaling marks an instance unhealthy if the calls to the Amazon EC2 action DescribeInstanceStatus
return any state other than running, the system status shows impaired, or the calls to Elastic Load
Balancing action DescribeInstanceHealth returns OutOfService in the instance state field.
If there are multiple load balancers associated with your Auto Scaling group, Auto Scaling checks the
health state of your EC2 instances by making health check calls to each load balancer. For each call, if the
Elastic Load Balancing action returns any state other than InService, the instance is marked as unhealthy.
After Auto Scaling marks an instance as unhealthy, it remains in that state, even if subsequent calls from
other load balancers return an InService state for the same instance.QUESTION 9
Which two AWS services provide out-of-the-box user configurable automatic backup-as-a-ser- vice andinstances 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 termi- nated and
replaced?
A. Change the thresholds set on the Auto Scaling group health check
B. Add an Elastic Load Balancing health check to your Auto Scaling group
C. Increase the value for the Health check interval set on the Elastic Load Balancer
D. Change the health check set on the Elastic Load Balancer to use TCP rather than HTTP checksCorrect Answer: BExplanation
Explanation/Reference:Reference:
Add an Elastic Load Balancing Health Check to your Auto Scaling Group
By default, an Auto Scaling group periodically reviews the results of EC2 instance status to determine the
health state of each instance. However, if you have associated your Auto Scaling group with an Elastic
Load Balancing load balancer, you can choose to use the Elastic Load Balancing health check. In this
case, Auto Scaling determines the health status of your instances by checking the results of both the EC2
instance status check and the Elastic Load Balancing instance health check.
For information about EC2 instance status checks, see Monitor Instances With Status Checks in the
Amazon EC2 User Guide for Linux Instances. For information about Elastic Load Balancing health checks,
see Health Check in the Elastic Load Balancing Developer Guide.
This topic shows you how to add an Elastic Load Balancing health check to your Auto Scaling group,
assuming that you have created a load balancer and have registered the load balancer with your Auto
Scaling group. If you have not registered the load balancer with your Auto Scaling group, see Set Up a
Scaled and Load-Balanced Application.
Auto Scaling marks an instance unhealthy if the calls to the Amazon EC2 action DescribeInstanceStatus
return any state other than running, the system status shows impaired, or the calls to Elastic Load
Balancing action DescribeInstanceHealth returns OutOfService in the instance state field.
If there are multiple load balancers associated with your Auto Scaling group, Auto Scaling checks the
health state of your EC2 instances by making health check calls to each load balancer. For each call, if the
Elastic Load Balancing action returns any state other than InService, the instance is marked as unhealthy.
After Auto Scaling marks an instance as unhealthy, it remains in that state, even if subsequent calls from
other load balancers return an InService state for the same instance.QUESTION 9
backup rotation options? Choose 2 answers
A. Amazon S3
B. Amazon RDS
C. Amazon EBS
D. Amazon Red shiftCorrect Answer: CDExplanation:
200-150 dumps
QUESTION 10An organization has configured a VPC with an Internet Gateway (IGW). pairs of public and pri- vate
subnets (each with one subnet per Availability Zone), and an Elastic Load Balancer (ELB) configured to
use the public subnets The application s web tier leverages the ELB. Auto Scaling and a mum-AZ RDS
database instance The organization would like to eliminate any potential single points ft failure in this
design.
What step should you take to achieve this organization's objective?
A. Nothing, there are no single points of failure in this architecture.
B. Create and attach a second IGW to provide redundant internet connectivity.
C. Create and configure a second Elastic Load Balancer to provide a redundant load balancer.
D. Create a second multi-AZ RDS instance in another Availability Zone and configurereplication to provide
a redundant database.Correct Answer: CExplanation
subnets (each with one subnet per Availability Zone), and an Elastic Load Balancer (ELB) configured to
use the public subnets The application s web tier leverages the ELB. Auto Scaling and a mum-AZ RDS
database instance The organization would like to eliminate any potential single points ft failure in this
design.
What step should you take to achieve this organization's objective?
A. Nothing, there are no single points of failure in this architecture.
B. Create and attach a second IGW to provide redundant internet connectivity.
C. Create and configure a second Elastic Load Balancer to provide a redundant load balancer.
D. Create a second multi-AZ RDS instance in another Availability Zone and configurereplication to provide
a redundant database.Correct Answer: CExplanation
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