What is a disadvantage of the traditional three-tier architecture model when east-west traffic between different pods must go through the distribution and core layers?
D: Traditional three-tier architectures (access, distribution, and core layers) require that east-west traffic (between servers or pods in different access layers) traverse up to the distribution or core and then back down—introducing unnecessary hops and latency. This is a key design limitation addressed by spine-leaf and fabric architectures.
Other options:
A: Bandwidth may be sufficient but not optimally utilized due to suboptimal pathing.
B: Security is not inherently compromised by architecture, although microsegmentation is harder.
C: Three-tier architectures can scale, but less efficiently and not without trade-offs like latency and complexity.
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