An administrator is adding a QoS policy to a Cisco FTD deployment. When a new rule is added to the policy and QoS is applied on “Interfaces in Destination Interface Objects”, no interface objects are available. What is the problem?
A.
The FTD is out of available resources for use, so QoS cannot be added.
B.
The network segments that the interfaces are on do not have contiguous IP space.
C.
A conflict exists between the destination interface types that is preventing QoS from being added.
D.
QoS is available only on routed interfaces, and this device is in transparent mode.
As stated by others, D is correct.
https://www.cisco.com/c/en/us/td/docs/security/firepower/610/configuration/guide/fpmc-config-guide-v61/fpmc-config-guide-v61_chapter_01110000.html#:~:text=a%20Bridge%20Group-,Unsupported%20Features%20for%20Bridge%20Groups%20in%20Transparent%20Mode,-The%20following%20table
Introduction to QoS
Quality of Service, or QoS, rate limits (polices) network traffic that is allowed or trusted by access control. The system does not rate limit traffic that was fastpathed.
QoS is supported for routed interfaces on Firepower Threat Defense devices only.
The question is not typical Cisco question So A/C/D are all possible.
It is still D - as if no available interfaces ( they cannot be all VTI)...then the FTD must be in transparent mode.
D is correct: https://www.cisco.com/c/en/us/td/docs/security/firepower/640/configuration/guide/fpmc-config-guide-v64/quality_of_service__qos__for_firepower_threat_defense.html
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