PDM 2002001030 PDM NSOP Practice Exam
**Question 1.** In NSOP architecture, which component is primarily responsible
for storing the definitions of available network services?
A) Order Management System
B) Service Catalog
C) Resource Inventory
D) VNF Manager
Answer: B
Explanation: The Service Catalog holds the service templates and definitions that
describe what can be ordered and provisioned.
**Question 2.** Which ETSI NFV layer does the NSOP interact with to request
compute resources for a VNF?
A) OSS/BSS Layer
B) VIM (Virtual Infrastructure Manager)
C) NFVI (Network Functions Virtualization Infrastructure)
D) VNF Manager
Answer: B
Explanation: The NSOP sends southbound API calls to the VIM to allocate
compute, storage, and networking resources for VNFs.
**Question 3.** What is the main difference between resource orchestration and
service orchestration?
, PDM 2002001030 PDM NSOP Practice Exam
A) Resource orchestration deals with hardware only, service orchestration with
software only.
B) Resource orchestration manages individual resources, while service
orchestration coordinates multiple resources to deliver an end‑to‑end service.
C) Service orchestration is a subset of resource orchestration.
D) They are synonymous terms.
Answer: B
Explanation: Resource orchestration handles allocation of single resources; service
orchestration composes these resources into a complete service flow.
**Question 4.** During the service lifecycle, which stage follows “catalog” and
precedes “ordering”?
A) Design
B) Activation
C) Assurance
D) Decommissioning
Answer: A
Explanation: After a service is designed and added to the catalog, customers can
place orders for it.
**Question 5.** In NSOP, which API style is most commonly used for northbound
communication with BSS systems?
A) SOAP
, PDM 2002001030 PDM NSOP Practice Exam
B) RESTful
C) gRPC
D) CORBA
Answer: B
Explanation: RESTful APIs are lightweight and widely adopted for northbound
integration with business support systems.
**Question 6.** Which data modeling language is typically used to describe VNF
descriptors in NSOP?
A) JSON Schema
B) YANG
C) TOSCA
D) XML Schema
Answer: C
Explanation: TOSCA (Topology and Orchestration Specification for Cloud
Applications) is used to model VNF descriptors and service templates.
**Question 7.** A workflow engine encounters a decision node that always
routes to a failure path due to a mis‑configured condition. What is the most
appropriate corrective action?
A) Delete the workflow and recreate it.
B) Modify the condition expression to reflect the intended logic.
C) Disable the decision node.
, PDM 2002001030 PDM NSOP Practice Exam
D) Increase the workflow timeout.
Answer: B
Explanation: Fixing the condition restores correct routing without rebuilding the
entire workflow.
**Question 8.** Which mechanism enables NSOP to automatically revert changes
when a service activation step fails?
A) Forward chaining
B) Compensation logic
C) Event correlation
D) Load balancing
Answer: B
Explanation: Compensation logic defines rollback actions for each step, ensuring
the system returns to a consistent state after a failure.
**Question 9.** When a VLAN ID conflict is detected in the Resource Inventory,
what is the recommended resolution?
A) Delete the conflicting VLAN from the inventory.
B) Reserve a new, unused VLAN ID and update the service template.
C) Reboot the NSOP platform.
D) Ignore the conflict; the system will auto‑resolve it.
Answer: B
**Question 1.** In NSOP architecture, which component is primarily responsible
for storing the definitions of available network services?
A) Order Management System
B) Service Catalog
C) Resource Inventory
D) VNF Manager
Answer: B
Explanation: The Service Catalog holds the service templates and definitions that
describe what can be ordered and provisioned.
**Question 2.** Which ETSI NFV layer does the NSOP interact with to request
compute resources for a VNF?
A) OSS/BSS Layer
B) VIM (Virtual Infrastructure Manager)
C) NFVI (Network Functions Virtualization Infrastructure)
D) VNF Manager
Answer: B
Explanation: The NSOP sends southbound API calls to the VIM to allocate
compute, storage, and networking resources for VNFs.
**Question 3.** What is the main difference between resource orchestration and
service orchestration?
, PDM 2002001030 PDM NSOP Practice Exam
A) Resource orchestration deals with hardware only, service orchestration with
software only.
B) Resource orchestration manages individual resources, while service
orchestration coordinates multiple resources to deliver an end‑to‑end service.
C) Service orchestration is a subset of resource orchestration.
D) They are synonymous terms.
Answer: B
Explanation: Resource orchestration handles allocation of single resources; service
orchestration composes these resources into a complete service flow.
**Question 4.** During the service lifecycle, which stage follows “catalog” and
precedes “ordering”?
A) Design
B) Activation
C) Assurance
D) Decommissioning
Answer: A
Explanation: After a service is designed and added to the catalog, customers can
place orders for it.
**Question 5.** In NSOP, which API style is most commonly used for northbound
communication with BSS systems?
A) SOAP
, PDM 2002001030 PDM NSOP Practice Exam
B) RESTful
C) gRPC
D) CORBA
Answer: B
Explanation: RESTful APIs are lightweight and widely adopted for northbound
integration with business support systems.
**Question 6.** Which data modeling language is typically used to describe VNF
descriptors in NSOP?
A) JSON Schema
B) YANG
C) TOSCA
D) XML Schema
Answer: C
Explanation: TOSCA (Topology and Orchestration Specification for Cloud
Applications) is used to model VNF descriptors and service templates.
**Question 7.** A workflow engine encounters a decision node that always
routes to a failure path due to a mis‑configured condition. What is the most
appropriate corrective action?
A) Delete the workflow and recreate it.
B) Modify the condition expression to reflect the intended logic.
C) Disable the decision node.
, PDM 2002001030 PDM NSOP Practice Exam
D) Increase the workflow timeout.
Answer: B
Explanation: Fixing the condition restores correct routing without rebuilding the
entire workflow.
**Question 8.** Which mechanism enables NSOP to automatically revert changes
when a service activation step fails?
A) Forward chaining
B) Compensation logic
C) Event correlation
D) Load balancing
Answer: B
Explanation: Compensation logic defines rollback actions for each step, ensuring
the system returns to a consistent state after a failure.
**Question 9.** When a VLAN ID conflict is detected in the Resource Inventory,
what is the recommended resolution?
A) Delete the conflicting VLAN from the inventory.
B) Reserve a new, unused VLAN ID and update the service template.
C) Reboot the NSOP platform.
D) Ignore the conflict; the system will auto‑resolve it.
Answer: B
