Free Cisco 300-430 Actual Exam Questions - Question 9 Discussion

Question No. 9
A network administrator just completed the basic implementation of Cisco CMX and tries to
implement location tracking. The administrator is having trouble establishing connectivity between
one of the WLCs through NMSP. What must be configured to establish this connectivity? (Choose
two.)
Select all that apply, then reveal solution.
US
JU
James U.
2026-02-10

B, C - Without opening port 16113 on the firewall, the NMSP traffic won’t get through, and enabling NMSP on the WLC is mandatory for the link to work at all. Both are needed for connectivity.

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JU
James U.
2026-01-28

It’s B for sure since the firewall blocking port 16113 will stop NMSP communication, and C because you have to enable NMSP on the WLC itself for any connection. Without both, it won’t work.

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OX
Osama X.
2026-01-27

E imo, since the WLC needs to authenticate the CMX server, adding its MAC and SSC key is essential besides enabling NMSP (C). Firewall rules (B) might matter but come secondary to establishing trust first.

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KN
Karan N.
2026-01-23

C, E - Enabling NMSP and adding MAC/SSC key are core for WLC-CMX trust.

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AX
Andrew X.
2026-01-23

It’s definitely C since enabling NMSP on the WLC is required for any communication to happen. For the second, I’d pick E over B because the WLC needs to authenticate the CMX server by its MAC address and SSC key before it allows NMSP connections. Firewall rules might matter in some cases, but without the WLC recognizing CMX, it won’t connect regardless of open ports. So C and E make the most sense here.

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AX
Andrew X.
2026-01-23

C, E. You definitely have to enable NMSP on the WLC for the communication to even start, so C is a must. But beyond just enabling the protocol, the WLC needs to recognize the Cisco CMX server by its MAC address and SSC key to establish trust and secure communication, so E makes sense here. The firewall port might be open by default or irrelevant if it’s an internal network, so B isn’t strictly necessary in every case. Adding licenses or rebooting the CMX doesn’t directly impact NMSP connectivity, so those can be ruled out.

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IF
Irfan F.
2026-01-17

Not A, since licenses don’t affect NMSP connectivity. The key steps are enabling NMSP on the WLC (C) and opening the firewall port 16113 (B) to allow communication.

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MD
Mohammad D.
2026-01-16

Isn’t it basic to enable NMSP on the WLC? What about the firewall port?

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