In what scenarios is the MapReduce component of Hadoop good at handling computing tasks?

Which of the following options is correct for the description of Compactiong?

In the Huawei big data solution b, which of the following components are included in the bottom layer of Hadoop? (Multiple choice)

Which of the following are the advantages of Kerberos? (Multiple choice)

Fusioninsight is a unified platform for Huawei's enterprise-level big data storage, query, and analysis. It can help companies quickly build a massive data information processing system, and discover new value points and business opportunities through real-time and non-real-time analysis and mining of massive information data.