Which two of the following options are categories of Network Maintenance tasks?

A.
Firefighting

B.
Interrupt-driven

C.
Policy-based

D.
Structured

E.
Foundational

Explanation:

Proactive Versus Reactive Network Maintenance:
Network maintenance tasks can be categorized as one of the following:
Structured tasks: Performed as a predefined plan.
Interrupt-driven tasks: Involve resolving issues as they are reported.
Reference: CCNP TSHOOT Official Certification Guide, Kevin Wallace, Chapter 1, p.7