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When using the block service of Huawei's distributed storage system, a DR cluster with asynchronous remote replication is enabled.
Which of the following is not true?

• A. Users can deploy DR clusters as needed. A DR cluster is a logical solution to provide replication services.
• B. A single DR cluster cannot meet the needs of rapidly growing DR services.
• C. DR cluster has good scalability.
• D. A DR cluster can be deployed on storage nodes or standalone servers

LLD is based on the determined target network architecture, clearly design the scope of the network and function deployment plan, the specific design content includes clarifying the interaction process of important services concerned by customers within the scope of the contract, the function allocation of all services in each network element, design the surrounding interconnection relationship of network elements, interconnection requirements, compliance with specifications, and quantitative calculation of interconnection resources.

• A. TRUE
• B. FALSE

The multi-tenancy feature mainly solves the isolation problem between tenants, including management isolation, business isolation, and network isolation.

• A. TRUE
• B. FALSE

Among SATA SSD, SAS SSD, and NVMe SSD, the one that supports the highest IOPS is NVMe SSD.

• A. TRUE
• B. FALSE

The engineer went to a customer unit to install Huawei OceanStor 9000 equipment (a total of 5 Huawei OceanStor 9000 C Nodes, both front and rear are 10GE TOE networking, and the TOE network card is installed on site). The equipment has been put on the shelf, and the signal cable and the power cord will be connected next, and software debugging. Due to the tight construction period, the following phenomena occurred during the hardware installation process. Which of the following descriptions of these phenomena are wrong? (Multiple Choice)

• A. There are two ways of inserting the TOE network card into A0, B1 and A0, B3 in the 5 devices. Since they are all inserted in the PCle slot, it will not affect the system deployment or network bandwidth, so it is not necessary to adjust.
• B. The signal cable labeled "NODEO1A0-0" is inserted into the network port at A0-1, and the signal cable labeled "NODEO1B3-1" is inserted into the network port at B3-0. Because the two network ports of the same network card are paired etc., you can plug the wires in different positions, and you cannot adjust them.
• C. In order to manage each Node separately, all Nodes must connect the NICo port to the management network.
• D. There are two stacking copper cables connected to the CE6850 switch. One of the faulty cables needs to be replaced later. Since it does not affect network communication, you can perform basic software commissioning first.