Huawei H19-338 HCSP-Presales-Storage Exam Practice Test

iMaster NCE-FabricInsight is Huawei’s intelligent O&M software that can provide network-wide visibility, intelligent analysis, and automated O&M for data center networks. iMaster NCE-FabricInsight can collect data from various sources, such as SNMP, Telemetry, Syslog, sFlow, and iFIT. It can also use AI algorithms to detect anomalies, locate faults, predict risks, and optimize performance. iMaster NCE-FabricInsight can also automate network configuration, deployment, verification, and recovery.

The technology that is not recommended for data centers is 802.1x. This is because 802.1x is a port-based authentication protocol that requires each device to be authenticated before accessing the network. This can cause delays and complexity in data center environments where there are many devices and high-speed connections2

Spine nodes are core nodes on the fabric network, but they do need to support VXLAN in some scenarios. According to the Data Center Networking: What It Is, Why It Matters, And Types article, VXLAN is a tunnel encapsulation technology that allows overlay networks to be created on top of the underlay network. Spine nodes need to support VXLAN when they act as gateways between different overlay networks or between overlay and underlay networks.

Dielectric constant does not affect radio throughput. According to Shannon’s theorem4, radio throughput is determined by the bandwidth and the signal-to-noise ratio of the channel. Dielectric constant is aproperty of the medium that affects the propagation speed and wavelength of electromagnetic waves, but not the information-carrying capacity.

CloudEngine 16808 is a high-performance core switch designed for data center networks and high-end campus networks . It supports up to eight SFUs (Switch Fabric Units), which are responsible for data switching and forwarding . The SFUs work in 1+1 backup mode, ensuring high reliability and availability .

AirEngine is Huawei’s newest brand name of Wi-Fi products. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, Huawei launched its new brand name AirEngine for its Wi-Fi products in April 2019, aiming to provide ubiquitous connectivity, mobility, and intelligence for enterprises.

USG6680E, USG6712E, and USG6716E are firewalls that are recommended for data centers. They provide high-performance security protection, virtualization, and cloud management capabilities for data center networks. USG12004 and USG12008 are not firewalls, but routers that are designed for enterprise WANs.

iMaster NCE-FabricInsight is a network analysis platform that provides intelligent O&M for data center networks . It has the following features:

• 1-3-5 intelligent O&M: This is a methodology that enables network administrators to locate faults within 1 minute, identify root causes within 3 minutes, and rectify faults within 5 minutes . It uses AI algorithms and big data analysis to provide proactive fault prevention, rapid fault location, and intelligent fault recovery .
• Network health check: This is a function that monitors the network status and performance in real time, and provides comprehensive network health reports and suggestions for improvement . It uses various indicators such as availability, reliability, latency, jitter, packet loss, and bandwidth utilization to evaluate the network health .
• Flow analysis: This is a function that collects and analyzes the network traffic data, and provides granular visibility into the network flows and applications . It uses technologies such as sFlow, NetStream, and Telemetry to obtain the flow information, and supports features such as flow path tracing, flow quality analysis, flow anomaly detection, and flow optimization .
• AI-scenario data visualization: This is a function that displays the network data in a visual and interactive way, and provides insights into the network behavior and trends . It uses technologies such as graph databases, natural language processing, and machine learning to present the network data in various scenarios, such as topology views, service views, device views, alarm views, and report views .
• Capacity/traffic risk prediction: This is a function that predicts the future network capacity and traffic demand based on historical data and trend analysis, and provides suggestions for network planning and optimization . It uses technologies such as time series analysis, regression analysis, and neural networks to forecast the network growth and identify potential risks .

The NE8000M1C supports dual AC/DC power modules. According to the NetEngine 8000 M1C Service Router Datasheet, NE8000M1C supports two power modules that can work in 1+1 redundancy mode. The power modules can be AC or DC power modules.

The CloudEngine 16800 series switches do not support 4, 8, 12, and 16 LPU slots. According to the CloudEngine 16800 Series Data Center Switches Datasheet, CloudEngine 16800 series switches support three models: CE16804 (4 LPU slots), CE16808 (8 LPU slots), and CE16816 (16 LPU slots). There is no model that supports 12 LPU slots.

WPA3 is a new security protocol for wireless networks that provides enhanced security and privacy features compared to WPA2 . One of the advantages of WPA3 is that it eliminates the potential for dictionary attacks, which are a type of brute-force attack that tries to guess passwords by using a list of common words or phrases . WPA3 uses a more robust authentication mechanism called Simultaneous Authentication of Equals (SAE), which prevents offline password cracking attempts . The other statements are correct advantages of WPA3. WPA3 can encrypt data on open SSIDs using Opportunistic Wireless Encryption (OWE), which creates a unique encryption key for each user without requiring any credentials . WPA3 also meets the NSA/SuiteB security requirements of governments and banks, which specify the use of strong encryption algorithms such as AES-256 and Elliptic Curve Cryptography (ECC) . WPA3 also ensures that even if an attacker obtains the intermediate key during the handshake process, they cannot decrypt the data or derive the session key, thanks to a feature called forward secrecy .

Each AP does not need to be designed to cover as large an area as possible in order to provide better coverage in a high-density scenario. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, in a high-density scenario, each AP should be designed to cover a small area with high signal strength and low interference, which can improve user experience and network capacity.

Huawei AirEngine 8760X1-PRO is not Huawei’s flagship Wi-Fi 6 model. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, Huawei AirEngine 8760X1-PRO is a high-performance Wi-Fi 6 AP that supports 16 spatial streams and a rate of up to 10.75 Gbit/s, but it is not the flagship model. The flagship model is Huawei AirEngine 8760R-PRO, which supports 24 spatial streams and a rate of up to 16.13 Gbit/s.

Huawei Wi-Fi 6 products implement 10 ms ultra-fast roaming for all terminals, not only Huawei terminals, by introducing a cache mechanism, ensuring that there is no frame freezing during roaming. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, Huawei Wi-Fi 6 products use a cache mechanism to store user information on APs and switches, which enables fast authentication and reconnection when users roam between APs. This mechanism is compatible with all terminals that support IEEE 802.11k/v/r standards.

SDR (Software Defined Radio) is a technology that can be used to switch the number of RFs (Radio Frequencies) dynamically. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, SDR enables an AP to dynamically switch between 2.4 GHz and 5 GHz bands based on the number of users and service requirements, improving spectrum utilization and user experience.

M-LAG (Multi-Chassis Link Aggregation Group) is the recommended networking mode for leaf switches. According to the Huawei CloudFabric Data Center Network Solution White Paper, M-LAG enables multiple leaf switches to form a logical device that provides high availability, load balancing, and simplified management.

The iMaster NCE-Fabric cannot be deployed in a single-node system. According to the iMaster NCE-Fabric Product Overview, iMaster NCE-Fabric is a distributed system that consists of three nodes: the management node, the control node, and the analysis node. The management node provides basic management functions, such as configuration, monitoring, and alarm management. The control node provides control functions, such as VXLAN tunnel establishment and policy association. The analysis node provides analysis functions, such as network health analysis, fault diagnosis, and performance optimization.

CloudEngine S5731-H supports VxLAN. It can implement Layer 2 and Layer 3 gateways for VxLANs, support centralized and distributed gateways, and interwork with BGP-EVPN to implement inter-subnet communication between VxLANs3. CloudEngine S5731-H delivers a switching performance of 336 Gbit/s3. CloudEngine S5731-H supports MPLS and can provide L2VPN and L3VPN services based on MPLS tunnels. CloudEngine S5731-H supports 2-port 40GE and 8-port 10GE optical/electrical cards that can be installed in the extended slot