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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?
A. The default admin password must be reset.
B. Portal access must be enabled via SSH.
C. The browser certificate must be renewed.
D. The Tomcat service must be restarted.
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 # 69
An engineer must add VNF implementation definitions and VNF service definitions to an OpenStack deployment data model to deploy virtual routers and firewalls to an enterprise network. After the virtual machine resources are prepared, which action must be taken next?
A. Configure key performance indicator monitoring.
B. Create the initial configuration for day zero.
C. Specify the operational characteristics.
D. Define the NFV network.
Answer: D
Explanation:
In an NFV environment following Cisco NFV Infrastructure and ETSI MANO architecture, the onboarding workflow for VNF deployment follows this high-level order:
* Define VNF descriptors (VNFD and NSD)- Includes implementation details and service definitions.
* Prepare virtual machine resources- Flavor, image, CPU/memory/storage, and placement.
* Define the NFV network- This step builds the underlay/overlay connectivity needed for the VNF.- It includes virtual network creation, interfaces, VLs (Virtual Links), connection points, and mapping into OpenStack (Neutron networks, subnets, ports).- No VNF can be deployed until the NFV service networks (management, control, data, HA) are defined.
* Apply Day-0 configuration- Bootstrapping/initial config.
* Apply Day-1 operational characteristics- Routing, services, policies.
* Configure operational monitoring (KPIs)- Performance and fault measurements.
Since the question states"after the VM resources are prepared", the next mandatory stage is defining the virtual network connectivity on which the VNFs will operate.
NEW QUESTION # 70
BGP multi-path is used in ECMP to enable __________ routing paths for traffic.
A. dual
B. single
C. multiple
D. no
Answer: C
NEW QUESTION # 71
Network segmentation in a service provider cloud environment is important for:
A. Centralizing all resources
B. Decreasing performance
C. Increasing complexity
D. Isolating resources and reducing attack surfaces
Answer: D
NEW QUESTION # 72
What is a valid connection method between carrier-neutral facilities within the same metro area?
A. private wireless connection
B. DWDM ring
C. OSPF backbone area adjacency
D. CAT6e connection
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
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