The DCN provides communication channels for centrally managed NEs to remotely manage and maintain NEs. Broadly speaking, all networks used for data communication can be called DCNs. In this post, DCN refers to the data communication network used for network management in the transmission network domain.
In general, communication devices are distributed on a network and it is impossible for users to separately manage each of them. Instead, users need to manage the devices in a centralized manner. When no external DCNs are available, operators have to build an independent Ethernet network for connecting the NMS and devices. Huawei provides various DCN solutions which provide network devices with communication functions of managing access and control information. Using these DCN solutions, users can monitor each device at the NMS center. Physically speaking, the DCN system can directly use installed fibers, which frees operators from building an external DCN.
The Embedded Control Channel (ECC) implements OAM (operation, maintenance and management) communication between NEs. ECC provides logical channels for communication between NEs. It is established on physical channels such as DCC and GCC channels to transmit communication information between NEs.
Below are some topics of HCPA-ECC (Huawei Certified ICT Professional – Enterprise Cloud Computing) certification exam:
Basic concepts and definitions of cloud computing
– Cloud service models (IaaS, PaaS, SaaS)
– Cloud deployment models (Public, Private, Hybrid, Community)
– Cloud Architecture
Understanding cloud architecture components
– Design principles for cloud infrastructure
– Virtualization technology and its role in cloud computing
– Cloud Service Management
Service Level Agreements (SLAs) and their importance
– Cloud resource management and orchestration
– Monitoring and performance management in the cloud
– Cloud Security
Security challenges in cloud computing
– Best practices for securing cloud environments
– Compliance and regulatory considerations
– Cloud Storage and Data Management
Cloud storage solutions and technologies
– Data backup, recovery, and disaster recovery in the cloud
– Data lifecycle management in cloud environments
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