Which Trait Defines Traditional WAN Over Cisco SD-WAN?

SD-WAN Architecture

Which characteristic applies to a traditional WAN solution but not to a Cisco SD-WAN solution?

  1. time consuming configuration and maintenance Source Reference Answer
  2. centralized reachability, security, and application policies
  3. low complexity and increased overall solution scale
  4. operates over DTLS/TLS authenticated and secured tunnels

Community Votes

A
100%

100% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.

Community Insight

Tests architectural trade-offs in WAN design, trapping candidates who confuse legacy deployment hurdles with SD-WAN's inherent automated features.

This question evaluates your ability to distinguish legacy network infrastructure from modern software-defined networking. Candidates consistently identify that traditional WANs require manual, time-consuming configuration and maintenance, contrasting sharply with SD-WAN's automation capabilities.

Option D is frequently selected by test-takers who mistakenly associate encrypted tunnels with older MPLS setups, overlooking that DTLS/TLS is explicitly engineered into Cisco SD-WAN’s secure overlay architecture.

Community Discussion (6 comments)

Zeruz 👍 2 Selected: A
Without knowing anything about SD-WAN, you can answer this question with no problem. If you want your technology shines among others, you should talk about the bad things other technologies have. Answer A has the only con, so it the correct one for this question.
chiacche 👍 1 Selected: A
Traditional WAN : relies on hardware and software from specific vendors, is more complex to deploy and manage, has higher costs, and has poor cloud support. Cisco SD-WAN : Based on software-defined architecture, it has strong flexibility, easy deployment, centralized management, and is optimized for cloud applications, making the cost more competitive.
slacker_at_work 👍 2 Selected: A
It's A indeed, not sure what 30840ea has been using.
rtibs 👍 3 Selected: A
A is correct. D refers to sd-wan
Luiggi 👍 3 Selected: A
why you try to sabotate everyone here? its clear tha the answer is A
[Removed] 👍 1 Selected: D
IMO D is more aligned. A Seems corrected but more subjective. D is definitive

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Expert Analysis

Core Architectural Differences

Traditional Wide Area Networks (WANs) typically rely on a hub-and-spoke topology with direct-to-datacenter routing. Every branch router requires individual CLI/GUI configuration for routing protocols, firewall rules, and QoS policies. This hardware-centric approach inherently leads to time-consuming configuration and maintenance, especially at scale.

Why Option A is Correct

Option A accurately describes the primary operational bottleneck of legacy WAN deployments. As noted by community members, traditional WAN solutions demand repetitive, device-by-device provisioning that increases administrative overhead and delays service rollout. Cisco SD-WAN eliminates this friction through centralized controllers (vManage) and policy-driven automation.

Why Other Options Are Incorrect

  • Option B describes a core SD-WAN advantage: centralized orchestration handles reachability, security, and application-aware policies globally.
  • Option C incorrectly attributes low complexity to traditional WAN; legacy networks are notoriously complex to scale and manage.
  • Option D refers to DTLS/TLS tunnels, which are mandatory security mechanisms in Cisco SD-WAN for both control and data plane communications. As highlighted in forum discussions, mistaking overlay encryption for a legacy trait is a common conceptual error.

Community Consensus

Test-takers overwhelmingly validate Option A, emphasizing that recognizing negative legacy traits is often the key to answering comparison questions. Several users pointed out that options B, C, and D explicitly describe SD-WAN capabilities or modern security standards, leaving A as the only logical fit for traditional infrastructure.

Official Reference

Exam Strategy

When comparing legacy technologies to modern platforms, quickly eliminate options that describe automation, centralization, or enhanced security—these are almost always advantages of the newer solution. Focus on identifying manual processes, scalability limits, or high latency traits to correctly flag traditional system drawbacks.

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