Oracle 1Z0-998-20 Exam Dumps 2020
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A solutions architect is designing a high performance computing (HPC) workload on Amazon EC2 The EC2 instances need tocommunicate toeach otherfrequently and require networkperformance with low latency and highthroughput
Q1. Which EC2 configuration meets these requirements’?
- Launchthe EC2instancesinaclusterplacementgroupinone Availability Zone
- Launchthe EC2instancesinaspreadplacementgroupinone Availability Zone
- Launch the EC2 instances in an Auto Scaling group in two Regions and peer the VPCs
- Launch the EC2 instances in an Auto Scaling group spanning multiple Availability Zones
Answer: A
Explanation:
Cluster – packs instances close together inside an Availability Zone. This strategy enables workloads to achieve the low-latency network performance necessary for tightly-couplednode-to-node communication that is typical of HPC applications. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html
Q2. Which architecture should the solutions architect implement? (Select TWO )
- Add AWS
- Add Aurora Replicas
- Add AWS Direct Connect
- Add AWS Global
- Add an Amazon CloudFront distribution in front of the Application Load Balancer
Answer: D,E
Explanation:
AWS Global Accelerator
https://docs.aws.amazon.com/global-accelerator/latest/dg/introduction-benefits-of-migrating.html
Q3. Which action will meet these requirements?
- Modify the ALB security group to deny incoming traffic from blocked
- Modify the security group for EC2 instances to deny incoming traffic from blocked
- Use Amazon CloudFront to serve the application and deny access to blocked
- Use ALB listener rules to return access denied responses to incoming traffic from blocked countries.
Answer: C
Explanation:
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/georestrictions.html
Q4. A web application is deployed in the AWS Cloud It consists of a two-tier architecture that includes a weblayeranda database layer The web server isvulnerableto cross-sitescripting (XSS)attacks What should a solutions architect do to remediate the vulnerability?
- Create a Classic Load Balancer Put the web layer behind the load balancer and enable AWS WAF
- Create a Network Load Balancer Put the web layer behind the load balancer and enable AWS WAF
- Create an Application Load Balancer Put the web layer behind the load balancer and enable AWS WAF
- Create an Application Load Balancer Putthe weblayer behind the load balancer and use AWS Shield Standard
Answer: C
Explanation:
Web Application Firewall
https://docs.aws.amazon.com/waf/latest/developerguide/classic-web-acl-xss-conditions.html https://aws.amazon.com/elasticloadbalancing/features/
Q5. What should a solutions architect do to accomplish this?
- Copy the website content to an Amazon S3 bucket Configure the bucket to serve static webpage content Replicate the S3 bucket to multiple AWS Regions
- Copy the website content to an Amazon S3 bucket Configure the bucket to serve static webpage content Configure Amazon CloudFront with the S3 bucket as the origin
- Copy the website content to an Amazon EBS-backed Amazon EC2 instance running Apache HTTP Server Configure Amazon Route 53 geolocation routingpoliciestoselecttheclosestorigin
- Copy the website content to multiple Amazon EBS-backed Amazon EC2 instances running Apache HTTP Server in multiple AWS Regions Configure Amazon CloudFront geolocation routing policies to select the closest origin
Answer: B
Explanation:
What Is Amazon CloudFront?
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Introduction.html https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/DownloadDistS3AndCust omOrigins.html
