312-50V9 · Question #412
Which statement best describes a server type under an N-tier architecture?
The correct answer is C. A group of servers with a unique role. In N-tier architecture, a server type refers to a collection of servers sharing the same functional role within a tier, not a single machine or a layer-only grouping.
Question
Which statement best describes a server type under an N-tier architecture?
Options
- AA group of servers at a specific layer
- BA single server with a specific role
- CA group of servers with a unique role
- DA single server at a specific layer
How the community answered
(27 responses)- A4% (1)
- C93% (25)
- D4% (1)
Why each option
In N-tier architecture, a server type refers to a collection of servers sharing the same functional role within a tier, not a single machine or a layer-only grouping.
This choice omits the defining characteristic of role - servers are grouped by what they do, not merely by which layer they occupy.
A server type is a category representing multiple servers, not a single server; a single server is an instance of a type.
In N-tier architecture, each logical tier is implemented by a group of servers that all share the same role - such as web servers, application servers, or database servers. Grouping by role allows horizontal scaling and redundancy within that tier. A 'server type' is therefore defined by its shared function, and it is a group rather than a single instance.
A single server represents one instance at one layer, which does not capture the grouped, role-based nature of a server type in N-tier design.
Concept tested: N-tier architecture server type definition
Source: https://learn.microsoft.com/en-us/azure/architecture/guide/architecture-styles/n-tier
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