SAP-C02 · Question #188
A company is planning to migrate its on-premises data analysis application to AWS. The application is hosted across a fleet of servers and requires consistent system time. The company has…
The correct answer is A. Configure a DHCP options set with the on-premises NTP server address. Setting a VPC DHCP options set with your on-prem NTP server IP makes every EC2 instance automatically use that clock source. Traffic rides the existing Direct Connect, so no extra tunnels or servers are needed - minimal admin overhead while meeting the requirement to sync to…
Question
A company is planning to migrate its on-premises data analysis application to AWS. The application is hosted across a fleet of servers and requires consistent system time. The company has established an AWS Direct Connect connection from its on-premises data center to AWS. The company has a high-precision stratum-0 atomic dock network appliance that acts as an NTP source for all on-premises servers. After the migration to AWS is complete, the clock on all Amazon EC2 instances that host the application must be synchronized with the on-premises atomic clock network appliance. Which solution will meet these requirements with the LEAST administrative overhead?
Options
- AConfigure a DHCP options set with the on-premises NTP server address.
- BCreate a custom AMI to use the Amazon Time Sync Service at 169.254.169.123
- CDeploy a third-party time server from the AWS Marketplace.
- DCreate an IPsec VPN tunnel from the on-premises atomic clock network appliance to the VPC to
How the community answered
(17 responses)- A76% (13)
- B6% (1)
- C6% (1)
- D12% (2)
Explanation
Setting a VPC DHCP options set with your on-prem NTP server IP makes every EC2 instance automatically use that clock source. Traffic rides the existing Direct Connect, so no extra tunnels or servers are needed - minimal admin overhead while meeting the requirement to sync to the on-prem atomic clock.
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