CLF-C02 exam dumps: questions 201 to 300 of 341

Correct answers: A, C, E

• A. Correct.

  Amazon CloudFront is a content delivery network (CDN) service that helps distribute content with low latency and high transfer speeds, making it ideal for delivering web applications globally.

• B. Incorrect.

  AWS Direct Connect is a dedicated network connection between your data center and AWS, which is not relevant for optimizing global user access to a web application.

• C. Correct.

  AWS Global Accelerator improves the availability and performance of your application for global users by routing traffic through the AWS global network.

• D. Incorrect.

  Amazon Virtual Private Cloud (VPC) allows you to create a private network within AWS, but it does not directly optimize global access or improve latency for users.

• E. Correct.

  Amazon Route 53 is a scalable Domain Name System (DNS) web service that helps route users to the nearest application endpoint, improving performance for global users.

Correct answer: B

• A. Incorrect.

  Amazon Route 53 is a scalable Domain Name System (DNS) service used for domain registration and routing traffic based on DNS queries, not for distributing traffic to backend instances.

• B. Correct.

  Elastic Load Balancing (ELB) is designed to automatically distribute incoming application traffic across multiple targets, such as EC2 instances, in one or more availability zones. It ensures high availability and fault tolerance for your application.

• C. Incorrect.

  AWS Direct Connect is a network service enabling dedicated private connectivity between on-premises environments and AWS but does not distribute traffic across backend instances.

• D. Incorrect.

  Amazon VPC is a service that allows you to create a logically isolated network in AWS. While it enables network configurations, it does not provide traffic distribution across instances.

Correct answers: A, C, E

• A. Correct.

  Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service that can route user traffic to endpoints in different AWS regions, ensuring global fault tolerance.

• B. Incorrect.

  AWS Direct Connect is a dedicated network connection between on-premises environments and AWS, but it does not provide traffic distribution or fault tolerance for applications.

• C. Correct.

  Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple targets, such as EC2 instances, in one or more availability zones, ensuring availability and fault tolerance.

• D. Incorrect.

  Amazon VPC (Virtual Private Cloud) allows the creation of isolated network environments but does not distribute traffic or provide fault tolerance by itself.

• E. Correct.

  AWS Global Accelerator improves the availability and performance of applications by directing traffic to optimal endpoints across AWS regions, making it suitable for global fault tolerance.

Correct answers: A, B, C

• A. Correct.

  An Internet Gateway is required to enable resources in the public subnets to communicate with the internet.

• B. Correct.

  A NAT Gateway is used to allow instances in the private subnets to access the internet for updates or patches without exposing them to inbound internet traffic.

• C. Correct.

  A Route Table is necessary to define how traffic is directed within the VPC, including routes for internet access through the Internet Gateway or NAT Gateway.

• D. Incorrect.

  An Elastic Load Balancer is used for distributing traffic across multiple instances but is not required for basic internet connectivity or subnet isolation.

• E. Incorrect.

  VPC Peering Connection is used to connect two VPCs, which is unrelated to the requirement of internet access or subnet isolation in this scenario.

Correct answers: A, C, D

• A. Correct.

  An Internet Gateway is required to allow resources within the VPC to communicate with the internet. Without it, the VPC would be isolated from the internet.

• B. Incorrect.

  A NAT Gateway is not strictly required to enable communication with the internet unless private subnets need to access the internet securely. It is optional depending on your design.

• C. Correct.

  Subnets are essential components of a VPC and are used to divide the VPC into smaller network segments. Public subnets are required for internet-facing resources.

• D. Correct.

  A route table is needed to define the network traffic paths within the VPC, including directing traffic to the internet via the Internet Gateway.

• E. Incorrect.

  An Elastic Load Balancer is a service used to distribute traffic among instances but is not a required component for enabling communication with the internet or other AWS services.