156-835 · Question #21
What is the distribution mode?
The correct answer is D. Distribution mode means selected algorithm for traffic distribution in between Appliances. See the full explanation below for the reasoning.
Question
What is the distribution mode?
Options
- ADistribution mode is the same as QSFP mode
- BDistribution mode is how the Orchestrator distributes traffic in between Security Groups
- CDistribution mode means selected algorithm for traffic distribution in between Orchestrators
- DDistribution mode means selected algorithm for traffic distribution in between Appliances
How the community answered
(51 responses)- A6% (3)
- B4% (2)
- C14% (7)
- D76% (39)
Community Discussion
7
Bao N.Jun 17, 2026Distribution mode is one of those terms that trips people up because the distractors all sound plausible if you have not spent time in the actual VSX or clustering architecture docs. The correct answer is D. Distribution mode refers to the selected algorithm used to distribute traffic in between Appliances, which is the key distinction here, it operates at the appliance level and governs how load is spread across the physical or virtual devices in a cluster. Option B sounds close because Orchestrators are involved in VSX deployments, but the Orchestrator piece is about management and coordination, not the traffic distribution algorithm itself. Option C makes the same mistake of pointing at Orchestrators instead of Appliances, and A is just noise if you know that QSFP is a physical transceiver form factor with no relevance to this concept.
Dervla O.Jun 17, 2026The Orchestrator trap in B and C is worth calling out more sharply because it catches people who studied VSX seriously but conflated management-plane coordination with the data-plane distribution decision, so elimination works here only if you go back and ask what layer each option is actually describing.
Dejan C.Jun 13, 2026Option B is the trap here because "Security Groups" sounds plausible if you've been staring at VSX or policy layer docs all day, but distribution mode has nothing to do with Orchestrator-to-SG traffic steering. It is specifically the algorithm the Orchestrator uses to decide which physical Appliance in the group gets a given connection or flow, so D is correct.
Dervla O.Jun 15, 2026Solid catch on B, and worth adding that the distribution algorithm choice also directly affects connection stickiness, so if your environment has asymmetric routing concerns that is the exact place to look first.
Dervla O.Jun 19, 2026D is right, though "algorithm" is loose phrasing, watch out for B pulling you toward Orchestrator logic instead of Appliance-level distribution.
Bao N.Jun 21, 2026Good catch on the Appliance framing, though I'd push back slightly because the spec wording in that domain varies enough between exam versions that anchoring on "Orchestrator vs. Appliance" as a hard rule has burned people before, so keep the underlying distribution concept loose until you see the actual stem.
Imani T.Jun 24, 2026I honestly read option B first and thought it was talking about how the Orchestrator handles load balancing across Security Groups, which sounded close enough to click. What snapped me back was remembering that distribution mode is specifically about the algorithm the system uses to spread traffic across the Appliances themselves, not the Orchestrator layer, so D is the one that actually nails the definition.