A Company Is About to Migrate an Application from Its

question 336

Multiple Choice

A company is about to migrate an application from its on-premises data center to AWS. As part of the planning process, the following requirements involving DNS have been identified. On-premises systems must be able to resolve the entries in an Amazon Route 53 private hosted zone. Amazon EC2 instances running in the organization's VPC must be able to resolve the DNS names of on-premises systems The organization's VPC uses the CIDR block 172.16.0.0/16. Assuming that there is no DNS namespace overlap, how can these requirements be met?

• A) Change the DHCP options set for the VPC to use both the Amazon-provided DNS server and the on-premises DNS systems. Configure the on-premises DNS systems with a stub-zone, delegating the name server 172.16.0.2 as authoritative for the Route 53 private hosted zone.
• B) Deploy and configure a set of EC2 instances into the company VPC to act as DNS proxies. Configure the proxies to forward queries for the on-premises domain to the on-premises DNS systems, and forward all other queries to 172.16.0.2. Change the DHCP options set for the VPC to use the new DNS proxies. Configure the on-premises DNS systems with a stub-zone, delegating the name server 172.16.0.2 as authoritative for the Route 53 private hosted zone.
• C) Deploy and configure a set of EC2 instances into the company VPC to act as DNS proxies. Configure the proxies to forward queries for the on-premises domain to the on-premises DNS systems, and forward all other queries to the Amazon-provided DNS server (172.16.0.2). Change the DHCP options set for the VPC to use the new DNS proxies. Configure the on-premises DNS systems with a stub-zone, delegating the proxies as authoritative for the Route 53 private hosted zone.
• D) Change the DHCP options set for the VPC to use both the on-premises DNS systems. Configure the on-premises DNS systems with a stub-zone, delegating the Route 53 private hosted zone's name servers as authoritative for the Route 53 private hosted zone.

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Definitions:

Exculpatory Clauses

Clauses included in contracts that release one party from liability for harm or damage that might occur, despite negligence or fault.

Intentional Behavior

Actions or conduct carried out with a specific purpose or intent, often implying deliberateness.

Reckless Fault

A legal term referring to actions taken with deliberate disregard for the safety and well-being of others, often resulting in liability.

Defame

To defame is to damage someone's reputation by making false and harmful statements or publications about them.