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  2. Cisco Certification
  3. 300-540 Exam
  4. Cisco.300-540.v2026-04-02.q62 Dumps
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Question 26

What role does NFVI MANO play in service assurance?

Correct Answer: C
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Question 27


Refer to the exhibit. An engineer must configure redundancy by deploying three Cisco vSmart Controllers in each data center. Which two actions must be taken to configure controllers vSmart1 and vSmart4? (Choose two.)

Correct Answer: C,D
In Cisco SD-WAN,vSmart controllers must be assigned to controller groupsso that edge routers can form redundant control-plane connections. Each data center in the diagram has its own group:
* New York DC # Controller group-ID 1(vSmart1, vSmart2, vSmart3)
* Los Angeles DC # Controller group-ID 2(vSmart4, vSmart5, vSmart6)
To configure the controllers correctly:
vSmart1
It resides in theNew York DC, so it must be assigned tocontroller-group 1.
Required command:
system controller-group-id 1
This corresponds toOption D.
vSmart4
It resides in theLos Angeles DC, so it must be assigned tocontroller-group 2.
Required command:
system controller-group-id 2
This corresponds toOption C.
Why Other Options Are Incorrect
* A and B:The command max-control-connections is configured onedge routers, not vSmart controllers.
* E:Controller-group-id 4 does not exist in this design; only group 1 and group 2 are shown.
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Question 28

What is a valid connection method between carrier-neutral facilities within the same metro area?

Correct Answer: C
Comprehensive and Detailed Explanation Based on Designing and Implementing Cisco Service Provider Cloud Network Infrastructure Knowledge When connectingcarrier-neutral facilities (CNFs)ordata centerswithin the same metropolitan area, service providers typically usehigh-bandwidth, low-latency optical transport methods. The most appropriate and commonly deployed interconnection technology is:
DWDM (Dense Wavelength Division Multiplexing) ring, which provides:
* High capacity (10G, 40G, 100G, 400G)
* Low latency
* Redundancy through ring or mesh topologies
* Multi-wavelength multiplexing for cost efficiency
* Carrier-grade reliability for metro interconnect services
This aligns with cloud interconnect and metro transport design used in service provider environments.
Evaluation of the Options
A). OSPF backbone area adjacency
This is a routing protocol adjacency, not a physical connection method. It requires a transport link underneath but does not represent the physical interconnect itself.
B). Private wireless connection
Not suitable for CNF or metro DC interconnect because it lacks the bandwidth, reliability, and deterministic performance required for large-scale carrier-grade interconnects.
C). DWDM ring
This is the correct method. DWDM-based metro fiber rings are the standard for connecting carrier-neutral facilities in the same metro region.
D). CAT6e connection
This is limited to short-distance copper Ethernet (tens of meters). It is not used for metro-scale interconnects or between CNFs.
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Question 29

BGP multi-path is used in ECMP to enable __________ routing paths for traffic.

Correct Answer: C
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Question 30

REST APIs are used in NFV for:

Correct Answer: A
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