What system is designed to provide monitoring and management for transport networks?

The correct answer is the system designed specifically for monitoring and managing transport networks. The Transport Network Control Center (TNCC) serves the purpose of overseeing the operations, performance, and reliability of transport networks. It enables operators to monitor network traffic, manage bandwidth, and ensure that data is transmitted efficiently across various transport mediums.

In contrast, IT Service Management (ITSM) focuses on delivering and managing IT services rather than specifically addressing transport network management. Public Key Infrastructure (PKI) is related to secure communication through cryptography but does not pertain to network monitoring. Virtual Private Networks (VPNs) are used to create secure connections over the internet but do not provide the management and monitoring capabilities that are essential for transport networks. Therefore, the TNCC is fundamentally the appropriate choice for transport network oversight and control.