Amazon ANS-C00 Practice Test - Questions Answers, Page 11
List of questions
Question 101
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To get started using AWS Direct Connect, in which of the following steps do you configure Border Gateway Protocol (BGP)?
Explanation:
Explanation:
In AWS Direct Connect, your network must support Border Gateway Protocol (BGP) and BGP MD5 authentication, and you need to provide a private Autonomous System Number (ASN) for that to connect to Amazon Virtual Private Cloud (VPC). To connect to public AWS products such as Amazon EC2 and Amazon S3, you will also need to provide a public ASN that you own (preferred) or a private ASN. You have to configure BGP in the Create a Virtual Interface step.
Reference: http://docs.aws.amazon.com/directconnect/latest/UserGuide/getstarted.html#createvirtualinterface
Question 102
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You want to send a broadcast message to your 10.0.0.0/24 subnet, which one of these addresses should you use?
Explanation:
Explanation:
You cannot send a broadcast in an AWS VPC, but the address is still reserved.
Question 103
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Accompany has a public domain, company.com, that is hosted by a DNS provider. The company creates a public hosted zone, cloud.company.com, in Amazon Route 53. The company wants to keep all public AWS application DNS records under this hosted zone.
The company recently deployed its first public application behind an Elastic Load Balancer in its AWS environment. The domain name app1.cloud.company.com needs to access the application. Which solution will meet these requirements?
Explanation:
Explanation:
Reference: https://www.trendmicro.com/cloudoneconformity/knowledge-base/aws/Route53/dns-alias-record-for-rootdomain.html
Question 104
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You are using the CLI to assign multiple IP addresses to interfaces. The operation fails. What is the most likely reason?
Explanation:
Explanation:
One more of the IP addresses could not be assigned. It only takes one failed assignment for the entire operation to fail.
Question 105
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You are building an application that provides real-time audio and video services to customers on the Internet. The application requires high throughput. To ensure proper audio and video transmission, minimal latency is required. Which of the following will improve transmission quality?
Question 106
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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?
Explanation:
Explanation:
Reference: https://aws.amazon.com/directconnect/faqs/
Question 107
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Your application server instances reside in the private subnet of your VPC. These instances need to access a Git repository on the Internet. You create a NAT gateway in the public subnet of your VPC. The NAT gateway can reach the Git repository, but instances in the private subnet cannot. You confirm that a default route in the private subnet route table points to the NAT gateway. The security group for your application server instances permits all traffic to the NAT gateway.
What configuration change should you make to ensure that these instances can reach the patch server?
Explanation:
Explanation:
The traffic leaves the instance destined for the Git repository; at this point, the security group must allow it through. The route then directs that traffic (based on the IP) to the NAT gateway. A is wrong because it removes the private aspect of the subnet and would have no effect on the blocked traffic anyway. C is wrong because the problem is that outgoing traffic is not getting to the NAT gateway. D is wrong because to allow outgoing traffic to the Git repository requires an outgoing security group rule.
Question 108
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Considering your knowledge of both the OSI and TCP/IP models - select the following statement which you consider to NOT be true.
Explanation:
Explanation:
The OSI model is a 7 layered model. The TCP/IP model is a 4 layered model. The top layer in both models is called the Application layer. The TCP/IP Application layer maps to the top 3 OSI layers (Application, Presentation, and Session layers).
Reference: https://en.wikipedia.org/wiki/OSI_model
Question 109
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A user is running a batch process on EBS backed EC2 instances. The batch process launches few EC2 instances to process hadoop Map reduce jobs which can run between 50-600 minutes or sometimes for even more time. The user wants a configuration that can terminate the instance only when the process is completed. How can the user configure this with CloudWatch?
Explanation:
Explanation:
Amazon CloudWatch alarm watches a single metric over a time period that the user specifies and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods. The user can setup an action which terminates the instances when their CPU utilization is below a certain threshold for a certain period of time. The EC2 action can either terminate or stop the instance as part of the EC2 action.
Reference: http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/UsingAlarmActions.html
Question 110
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Your company has decided to deploy AWS WorkSpaces for its hosted desktop solution. Your manager is very concerned with security and cost, as well as reliability. What two things should be deployed? (Choose two.)
Explanation:
Explanation:
A VPN should be deployed over Direct Connect to ensure the traffic is encrypted. You would use an AD Connector here since it doesn't cache any credentials in the cloud. AWS Hosted AD is more expensive and caches credentials.
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