What are the two basic movements of route synchronization?

• A. Planned and Immediate
• B. Forward and Return
• C. Local and Global
• D. Sequential and Random

Answer: (A)

In route synchronization, the two basic movements describe how updates are coordinated between devices: planned synchronization and immediate synchronization. Planned synchronization schedules updates at a predefined time or interval, allowing coordinated, batched changes that improve stability and make verification easier across multiple routers. Immediate synchronization pushes updates as soon as they occur, keeping routing information current and reducing convergence time, though it can increase short-term update churn. Together these cover the main approaches: one emphasizes control and predictability, the other emphasizes speed and freshness. The other options describe directions, scope, or order rather than how updates are timed and propagated.