H13-629_V3.0 Questions Bank

Huawei divides DR into data-level, application-level, and service-level protection according to recovery requirements and investment.

For data-level DR, the remote site primarily protects copies of production data. Huawei explicitly states that a data-level DR center cannot prevent service interruption when a disaster occurs; it operates essentially as a backup center from which data can later be restored. Therefore, C is correct and D is false.

For application-level DR, the backup site contains the same application system as the production site and data is synchronized between the sites using synchronous or asynchronous mechanisms. This allows applications to be restarted at the DR site within the defined RTO, making B correct.

Service-level DR is the most comprehensive level. Huawei defines it as a complete DR environment covering IT technologies and infrastructure as well as non-IT resources such as offices and telecommunications. A redundant workplace may therefore be required if the normal business site becomes unavailable.

Hence, A, B, and C are correct.

Study Guide Topics: Data Protection Solution → DR Basics → DR Levels → Data-Level → Application-Level → Service-Level DR.

Huawei ' s troubleshooting procedure states: “Cause 2: The link is abnormal.” It then instructs the engineer to check DeviceManager and determine whether the Fibre Channel or iSCSI port connected to the application server has a running status of “Link down.” If it does, the engineer must troubleshoot the corresponding FC or iSCSI link failure. This distinction is important. A Link down status represents a lower-layer connectivity condition involving the physical/interface link, switch path, cabling, peer port, or interface state. IP addressing belongs to the Layer-3 service configuration. An incorrect logical-port IP address or host service IP can prevent IP communication, iSCSI login, or service connectivity, but it does not by itself force an Ethernet physical interface into the Link-down state.

The training material separately treats IP address information as networking configuration information for iSCSI environments, rather than as the definition of a Link-down condition. Therefore, the statement incorrectly attributes the observed physical/link-layer status to IP configuration.

Study Guide Topics: Data Storage Management and O & M → Fault Analysis → Basic Storage Service Troubleshooting → Failure to Discover LUNs → Link Abnormality.