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| Section | Objectives |
|---|---|
| Cloud Infrastructure Concepts | - Service provider cloud architecture principles - Virtualization fundamentals (compute, network, storage) |
| NFV and Virtualized Network Functions | - NFV architecture and components - VNF lifecycle management |
| Automation and Orchestration | - Service orchestration workflows - Cisco NSO basics and service modeling |
| Infrastructure and Cloud Integration | - Data center and cloud interconnect - Hybrid cloud integration for service providers |
| Operations and Assurance | - Fault, configuration, and performance management - Telemetry and monitoring in service provider networks |
>> 300-540 Reliable Exam Question <<
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NEW QUESTION # 71 
Refer to the exhibit. An engineer must deploy a standalone Cisco NFVIS. These configurations were performed already:
Deployed the virtual machine
Configured the hostname and IP address
Configured dual WAN support
When the engineer attempts to access the NFVIS portal, the API returns a 401 Unauthorized error. What is the cause of the issue?
Answer: A
Explanation:
Cisco NFVIS follows strict security controls. After a fresh deployment:
* Thedefault admin credentials are considered insecure.
* NFVIS requires the administrator toreset the default password on first login(typically via console or SSH).
* Until the password is changed,REST API and web-portal access are denied, and attempts to access the portal or API returnHTTP 401 Unauthorized, even if the default credentials are provided.
This mechanism prevents use of factory-default passwords in production and is explicitly documented as a mandatory post-install step.
The other options are not the cause of a 401 error:
* Enabling portal via SSH (B) is not required; HTTPS access is enabled by default once credentials are valid.
* Restarting Tomcat (C) would address service availability issues (e.g., 5xx errors), not authentication.
* Browser certificates (D) affect trust warnings (e.g., HTTPS certificate errors), not 401 Unauthorized.
NEW QUESTION # 72
What is a valid connection method between carrier-neutral facilities within the same metro area?
Answer: B
Explanation:
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.
NEW QUESTION # 73
ACI's approach to data center management is unique because it:
Answer: C
NEW QUESTION # 74
Which of the following is essential for data plane high availability?
Answer: C
NEW QUESTION # 75
What is a valid connection method between carrier-neutral facilities that are more than 20 miles away from each other?
Answer: B
Explanation:
Comprehensive and Detailed Explanation
For distancesgreater than 20 miles, valid inter-facility transport options must support:
* Metro-scale connectivity
* High bandwidth
* Low latency
* Carrier-grade reliability
Acarrier access Ethernet ring (MEN / Metro Ethernet)is designed for:
* Interconnecting data centers or meet-me rooms
* Distances far exceeding 20 miles
* High-availability layer-2 or layer-3 transport
Why the others are invalid:
* CAT6e# maximum ~100 meters
* Multimode fiber# typically <2 km (~1.25 miles)
* Private wireless# not used for high-capacity DC interconnects, unreliable for core transport Thus, the only correct carrier-grade method isCarrier access Ethernet ring.
NEW QUESTION # 76
......
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