101 · Question #591
A company would like to create a web service for multiple data centers (US EU, ASia) where each data center uses the same IP address. Requests will be routed to the closest data center. Which…
The correct answer is C. Anycast. Anycast addressing assigns the same IP address to multiple nodes in different geographic locations, and routing protocols automatically direct each request to the nearest node. This is the standard approach for latency-optimized geo-distributed services.
Question
A company would like to create a web service for multiple data centers (US EU, ASia) where each data center uses the same IP address. Requests will be routed to the closest data center. Which address type is the appropriate solution?
Options
- ABroadcast
- BUnicast
- CAnycast
- DMicest
How the community answered
(31 responses)- B3% (1)
- C94% (29)
- D3% (1)
Why each option
Anycast addressing assigns the same IP address to multiple nodes in different geographic locations, and routing protocols automatically direct each request to the nearest node. This is the standard approach for latency-optimized geo-distributed services.
Broadcast delivers packets to all devices on a local network segment and has no mechanism for routing traffic to specific geographically distributed data centers.
Unicast identifies a single unique destination endpoint; it cannot be shared across multiple data centers and does not support proximity-based routing.
Anycast allows servers in multiple regions (US, EU, Asia) to share a single IP address, and BGP routing automatically steers each client's request to the topologically closest data center, minimizing latency without requiring clients to know which data center they are reaching.
Micest is not a recognized or standardized IP addressing type in networking.
Concept tested: Anycast addressing for geo-distributed proximity routing
Source: https://www.rfc-editor.org/rfc/rfc4786
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