Static routes are manually configured by network administrators and are not dynamically updated by routing protocols. Let us analyze each option:

Option A :

Correct : Static routes are manually added to the routing table by the administrator. They remain unchanged unless manually modified or removed.

Option B :

Incorrect : Static routes are not automatically recalculated when the network topology changes. If a static route becomes invalid due to a topology change, the administrator must manually update it.

Option C :

Incorrect : Static routes are not learned from other routing protocols. Routes learned from dynamic protocols (e.g., OSPF, RIP) are dynamic routes, not static routes.

Option D :

Incorrect : Static routes are not preconfigured on routers before delivery. They are configured by administrators based on the network design.

Thus, the correct answer is A .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: Static Routing.

Routing Protocols and Static Routes by Huawei.