When delivering a flash storage project, Huawei engineers introduced the trusted and secure boot technology...

A is correct. Huawei’s secure boot description states that secure boot uses public/private key pairs and digital signatures to sign and verify boot modules, ensuring integrity and preventing unauthorized tampering of system software during startup.

B is correct. Huawei describes secure boot as a chain-of-trust startup process in which the previous module verifies the next module level by level . Only after verification succeeds does the next module run and the device continue booting.

C is incorrect. Huawei training material for storage secure boot shows the sequence as: (1) verify the Grub signature public key, (2) verify and load Grub, (3) verify software signature certificate status, (4) verify and load the OS . Therefore, this option gives the wrong order.