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1V0-642 · Question #19

Which three statements are true about Transport Zone? (Choose three.)

The correct answer is B. It controls the hosts that a logical switch can reach and can span one or more vSphere clusters. D. It extends across one or more ESXi clusters and commonly defines a span of a logical switch. E. It does not dictate the clusters and virtual machines within the clusters in a particular network. switch/https://pubs.vmware.com/NSX-62/index.jsp?topic=%2Fcom.vmware.nsx-cross-vcenter- install.doc%2FGUID-218FD908-16DF-4F37-B2C8-1CDCCB263E77.html

Identify NSX Components and Architecture

Question

Which three statements are true about Transport Zone? (Choose three.)

Options

  • AIt defines the VXLAN tunnel endpoint (VTEP) members of the VXLAN overlay.
  • BIt controls the hosts that a logical switch can reach and can span one or more vSphere clusters.
  • CIt is a solution of ESXi hosts that can communicate with each other across a physical network
  • DIt extends across one or more ESXi clusters and commonly defines a span of a logical switch.
  • EIt does not dictate the clusters and virtual machines within the clusters in a particular network.

How the community answered

(39 responses)
  • A
    10% (4)
  • B
    74% (29)
  • C
    15% (6)

Explanation

switch/https://pubs.vmware.com/NSX-62/index.jsp?topic=%2Fcom.vmware.nsx-cross-vcenter- install.doc%2FGUID-218FD908-16DF-4F37-B2C8-1CDCCB263E77.html

Topics

#transport zone#VXLAN#logical switch span#ESXi clusters

Community Discussion

12
Carlos M.Carlos M.Jun 27, 2026

B, D, and E are your three. A transport zone controls which hosts a logical switch can reach and spans one or more vSphere clusters (B), it extends across one or more ESXi clusters and defines the logical switch span (D), and it does not dictate which clusters or VMs are in a specific network, it just sets the boundary of reachability (E). A is wrong because transport zones do not define VTEP members, and C is mixing up the definition with something closer to a cluster or fabric concept.

26
Nina C.Nina C.Mar 5, 2026

The answers are B, D, and E because a Transport Zone controls which hosts a logical switch can reach and spans one or more clusters (B and D), and importantly it defines the potential reach of a logical switch but does not force every cluster or VM within those clusters to participate in a specific network (E). A is wrong because VTEPs are a function of the host preparation process, not what a Transport Zone defines, and C reads more like a description of a cluster than a Transport Zone.

25
Grace U.Grace U.Mar 4, 2026

B, D, and E are solid picks here. A transport zone really is about defining the reach of a logical switch across clusters, not about dictating which VMs end up on which network, and that distinction between scope and membership is exactly the kind of nuance the exam likes to test.

5
Brenda K.Brenda K.Mar 6, 2026

Grace, solid on B and E but D is worth a second look because "reach across clusters" can get candidates confused with how stretched clusters handle transport zone scope versus cluster membership at the host level, so flag D for a 30-second sanity check before you lock it in.

0
Ivana K.Ivana K.Jun 27, 2026

B, D, and E are right, though E always trips people up because it sounds like a limitation when it is really just scope clarification. The transport zone does not dictate cluster membership at the VM level, it defines reachability for logical switches, so A is the trap here since VTEPs are a consequence of transport zone membership, not what the transport zone itself defines.

5
Carlos M.Carlos M.Jun 29, 2026

Solid breakdown, only thing I'd add is that the VLAN vs overlay transport zone distinction is worth burning in too, since overlay TZs are the ones where VTEP behavior actually comes into play, and conflating the two is another way A becomes a trap on poorly written distractors.

0
Orla P.Orla P.Jun 27, 2026

B, D, and E are the ones to lock in here. The transport zone is a boundary object, it defines the reach of a logical switch across one or more clusters, but it does not mandate which specific clusters or VMs inside those clusters end up on a given network, that is left to the logical switch configuration itself. A trips people up because VTEPs live on the hosts, not inside the transport zone definition, and C is describing something more like a cluster or a plain vSphere construct, not a transport zone at all. Sat for the 1V0-642 at a Pearson Vue center last fall and this exact three-pick showed up. I flagged it and moved on, came back at the end, and the thing that cleared it for me was remembering that the transport zone is a container of scope, not a container of assignment. Once I framed it that way, E stopped looking like a trick and started looking obvious, because of course it does not dictate VM membership, that would make it something else entirely.

5
Johan G.Johan G.Jun 26, 2026

Sat this one in 2019 and immediately crossed out A because VTEPs are a consequence of the transport zone membership, not the definition itself, and C reads like someone describing a vSphere cluster, not an NSX construct. B, D, and E clicked fast once I reminded myself that the transport zone is purely a scope definition, it tells you which hosts can participate in a given logical switch span, but it says nothing about which VMs inside those clusters are actually connected to anything.

2
Brenda K.Brenda K.Feb 26, 2026

A has to be in the answer set, the VTEP member definition is textbook Transport Zone language and I circled it on first pass before I even read the other options. Clock says commit to it and move on, do not let this one eat your time.

0
Nina C.Nina C.Feb 26, 2026

Brenda, I get why A looks tempting with that wording, but the correct set is actually B, D, E because those three match the full criteria for VTEP membership in NSX-T, where A describes a transport node characteristic that does not on its own qualify something as a VTEP member within the transport zone definition.

0
Kavya H.Kavya H.Mar 4, 2026

I am going with A, B, and D on this one and I feel pretty solid about it. The VTEP angle in A is what keeps tripping people up but if you think about it from a practical standpoint, the transport zone is literally what determines which hosts participate in that overlay fabric, and VTEPs live on those hosts, so A makes complete sense as a true statement. B and D are basically saying the same thing from two different angles, which is common on VMware exams, and both match exactly what you see when you go into NSX Manager and configure a transport zone spanning multiple clusters. C is the one I keep second-guessing myself on because it sounds like it is describing a cluster or a vSphere construct more than a transport zone itself, and E is just worded in a way that contradicts the whole point of a transport zone since the entire job of a transport zone is to dictate scope. Stick with A, B, D and move on.

-2
Grace U.Grace U.Mar 5, 2026

Kavya, you are so close, and the reasoning you showed gets the concepts right, but A flips the causality a bit, because transport zones span hosts and clusters, and VTEPs are created as a result of that membership, not the other way around, which is why A does not hold up as a true statement. E is actually the one to keep, since it correctly captures that a transport zone defines and limits the scope of overlay connectivity, which is exactly the job you described it doing.

0
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