By default, the preference of OSPF routes is 10. When the parameter ase is specified, the default preference of AS-external routes is 150. https://support.huawei.com/enterprise/en/doc/EDOC1100138140/655f0a9/setting-the-preference-of-ospf-routes

OSPF internal: 10, OSPF external: 150

A. An OSPF route has an internal preference of 10, and a static route has an internal preference of 60. This indicates that the OSPF route has a higher preference than the static route, so the router selects the OSPF route as the optimal route.

Static:60, Direct:0, OSPF internal: 10, OSPF external: 150. These are the values by default on a huawei's router

B. False In most routing protocols, including OSPF (Open Shortest Path First), the route preference is not fixed at 10. The route preference is a numerical value that indicates the trustworthiness of a routing source. However, the specific preference values can vary between routing protocols. In OSPF, the route preference is typically set to 110.

BBB. Not must

Correct answer is B. OSPF can have a preference of 150 if the route is an external one. By default, the preference of OSPF routes is 10 and that of ASE routes is 150

By default is 10 for Huawei

Acho que a resposta correta é (Verdadeira)

I think the keyword here is "must"

By default, the preference of the OSPF route is 10 on Huawei

the Administrative Distance in OSPF is 110