File data stored in OceanStor 9000 is divided into N fragments and M redundant fragments, M ranges from 2 to 18.
Correct Answer: A
Question 37
Which of the following Smart features are used in data migration?
Correct Answer: B,C
Question 38
An HDFS cluster consists of a name node, data nodes, and clients. The name node is responsible for data storage.
Correct Answer: B
The statement is false because the NameNode in an HDFS architecture is not responsible for storing actual user data. HDFS consists mainly of a NameNode, multiple DataNodes, and clients. The NameNode manages the file system namespace, metadata, directory structure, file permissions, and block mapping information. It knows which DataNodes hold the blocks of each file, but it does not store the file data itself. The DataNodes are responsible for storing actual data blocks and handling read /write requests from clients under the coordination of the NameNode. In Huawei distributed storage scenarios, this distinction is important because metadata management and data storage are separated to improve scalability and reliability. Therefore, saying that the NameNode is responsible for data storage is incorrect.
Question 39
Which of the following technologies are used in the OceanProtect ransomware protection solution to prevent data tampering and deletion? (Select all that apply)
Correct Answer: A,B,C
Huawei OceanProtect provides a multi-layered defense to ensure that backup data remains immutable and protected from ransomware attacks. To specifically prevent data tampering and deletion, the following technologies are employed: WORM (Write Once, Read Many) (Option C): This technology ensures that once data is written to the backup storage, it cannot be modified or deleted by any user (including administrators) until the specified retention period has expired. Secure Snapshot (Option A): These snapshots are protected by a "read-only" attribute and a retention lock. Unlike standard snapshots, secure snapshots cannot be deleted manually before they expire, providing a reliable point-in-time recovery source even if the primary backup is targeted. Air Gap (Option B): By physically or logically isolating a copy of the data in an "Air Gap" zone that is disconnected from the network most of the time, Huawei ensures that the data is unreachable for tampering or deletion by attackers who have gained access to the production network. Detection and analysis (Option D) is part of the solution, but its purpose is to identify an ongoing attack or infected files, rather than physically preventing the tampering or deletion of the data itself.
