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Amazon ANS-C00 問題練習

AWS Certified Advanced Networking Specialty Exam 試験

最新更新時間: 2020/11/16,合計57問。

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Question No : 1
Your company uses an NTP server to synchronize time across systems. The company runs multiple versions of Linux and Windows systems. You discover that the NTP server has failed, and you need to add an alternate NTP server to your instances.
Where should you apply the NTP server update to propagate information without rebooting your running instances?

正解:

Question No : 2
You are designing an AWS Direct Connect solution into your VPC. You need to consider requirements for the customer router to terminate the Direct Connect link at the Direct Connect location.
Which three factors that must be supported should you consider when choosing the customer router? (Choose three.)

正解:

Question No : 3
Your application is hosted behind an Elastic Load Balancer (ELB) within an autoscaling group. The autoscaling group is configured with a minimum of 2, a maximum of 14, and a desired value of 2. The autoscaling cooldown and the termination policies are set to the default value.
CloudWatch reports that the site typically requires just two servers, but spikes at the start and end of the business day can require eight to ten servers. You receive intermittent reports of timeouts and partially loaded web pages.
Which configuration change should you make to address this issue?

正解:
Explanation:
References: https://docs.aws.amazon.com/autoscaling/ec2/userguide/attach-load-balancer-asg.html

Question No : 4
You are moving a two-tier application into an Amazon VPC. An Elastic Load Balancing (ELB) load balancer is configured in front of the application tier. The application tier is driven through RESTful interfaces. The data tier uses relational database service (RDS) MySQL. Company policy requires end-to-end encryption of all data in transit.
What ELB configuration complies with the corporate encryption policy?

正解:

Question No : 5
You ping an Amazon Elastic Compute Cloud (EC2) instance from an on-premises server.
VPC Flow Logs record the following:
2 123456789010 eni-1235b8ca 10.123.234.78 172.11.22.33 0 0 1 8 672 1432917027
1432917142 ACCEPT OK
2 123456789010 eni-1235b8ca 172.11.22.33 10.123.234.78 0 0 1 4 336 1432917027
1432917082 ACCEPT OK
2 123456789010 eni-1235b8ca 172.11.22.33 10.123.234.78 0 0 1 4 336 1432917094
1432917142 REJECT OK
Why are ICMP responses not received by the on-premises system?

正解:

Question No : 6
You have been asked to monitor traffic flows on your Amazon EC2 instance. You will be performing deep packet inspection, looking for atypical patterns.
Which tool will enable you to look at this data?

正解:
Explanation:
References: https://www.slideshare.net/TeriRadichel/packet-capture-on-aws

Question No : 7
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? (Choose two.)

正解:
Explanation:
References: https://docs.aws.amazon.com/vpc/latest/userguide/VPC_VPN.html

Question No : 8
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? (Choose two.)

正解:
Explanation:
References: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/lambda-at-the­edge.html

Question No : 9
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?

正解:
Explanation:
References: https://aws.amazon.com/blogs/security/how-to-manage-amazon-guardduty-security-findings­across-multiple-accounts/

Question No : 10
An organization runs a consumer-facing website on AWS. The Amazon EC2-based web fleet is load balanced using the AWS Application Load Balancer, Amazon Route 53 is used to provide the public DNS services.
The following URLs need to server content to end users:
test.example.com
web.example.com
example.com
Based on this information, what combination of services must be used to meet the requirement? (Choose two.)

正解:

Question No : 11
A customer is using ABC Telecom as a network provider. The customer has 10 different offices connected to ABC Telecom’s MPLS backbone. The customer is setting up an AWS Direct Connect connection to AWS and has provided the LOA-CFA to ABC Telecom. ABC Telecom has terminated the Direct Connect circuit into their MPLS backbone. To uniquely identify the customer’s traffic over the MPLS backbone, the customer must encapsulate all traffic with VLAN tag 100. The customer wants to send traffic to multiple VPCs.
Which two steps should be taken to meet the customer’s requirement? (Choose two.)

正解:

Question No : 12
Your company’s policy requires that all VPCs peer with a “common services: VPC. This VPC contains a fleet of layer 7 proxies and an Internet gateway. No other VPC is allowed to provision an Internet gateway. You configure a new VPC and peer with the common service VPC as required by policy. You launch an Amazon EC2. Windows instance configured to forward all traffic to the layer 7 proxies in the common services VPC. The application on this server should successfully interact with Amazon S3 using its properly configured AWS Identity and Access Management (IAM) role.
However, Amazon S3 is returning 403 errors to the application.
Which step should you take to enable access to Amazon S3?

正解:

Question No : 13
168.10.5 within the VPC. The DNS Resolver has standard root server hints configured and conditional forwarding for “awscloud.internal” to the IP address 192.168.0.2.
From your PC on the corporate network, you query the DNS server at 192.168.10.5 for www.amazon.com. The query is successful and returns the appropriate response. When you query for “server.awscloud.internal”, the query times out. You receive no response.
How should you enable successful queries for “server.awscloud.internal”?

正解:

Question No : 14
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? (Choose two.)

正解:

Question No : 15
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?

正解:

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