3.4 Determine high-performing and/or scalable network architectures.
Objective 3.4 sits in Design High-Performing Architectures, which carries 24% of the Solutions Architect Associate exam. The questions below are original, written from the official objective title above, and each explanation cites the AWS page it rests on.
Objective title verbatim from the official objectives. AWS exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
Users on three continents pull the same images from one S3 bucket, and first byte times are poor far from that Region. What do you add?
The concept
Distance costs round trips, and the only way to stop paying them is to answer the request nearer the viewer. For content that is identical for every viewer, a copy held at the edge removes the trip to the origin completely rather than making it faster.
Why this answer
Images and scripts are the same bytes for everyone, so they cache. Once an object sits in the edge location closest to a viewer, it is served from there immediately and the request never travels back to the bucket's Region.
- ACopying the bucket to more Regions means running replication and steering clients yourself, and each new Region is another copy to pay for.
- Correct. Cached objects are served from the nearest edge location without a trip to the origin.
- CTransfer Acceleration speeds uploads over long distances into a bucket. It caches nothing on the way out.
- DGlobal Accelerator shortens the network path to a Region and holds no content. It suits an application that cannot cache.
Now you: objective 3.4 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
A UDP game service runs in three Regions, and clients must connect to two fixed IP addresses hard coded in console firmware. What fronts it?
Sample question 2 of 3
A company running 40 VPCs and a Direct Connect gateway wants one place to route between them instead of a peering mesh. What do you build?
Sample question 3 of 3
A SaaS provider exposes one internal API to customer VPCs, with no internet gateway, NAT device or public address in the path. What do they use?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.