H19-301_V3.0 Exam Dumps - HCSA-Presales-IP Network Certification V3.0

Redundancy Technologies for Leaf Switches:

To enhance redundancy in data center networks, technologies like stacking and M-LAG (Multi-Chassis Link Aggregation Group) are commonly used.

Huawei CloudEngine 6881 Capabilities:

TheCloudEngine 6881series switchesdo support M-LAG, enabling active-active redundancy between two switches. This ensures high availability and load balancing.

Conclusion:The statement is FALSE because the CloudEngine 6881 supports M-LAG.

SNMP (Simple Network Management Protocol) is a widely used protocol for managing and monitoring network devices. In an SNMP-based network:

Each managed device runs anagent processthat collects and stores management information.

Themanagement process(typically running on a Network Management System, or NMS) communicates with the agent using SNMP messages.

SNMP defines several types of messages, such as GET, SET, and TRAP, which allow the NMS to query or modify device configurations and receive notifications from the agent. Other options like NETCONF, HTTP, and YANG are unrelated to SNMP communication.

The Huawei NetEngine 8000 M6 series routers are designed for robust performance in various environmental conditions. For models with DC power supply , the normal operating temperature range is -20°C to +65°C .

Below is an explanation of the other options:

0°C to +45°C : This range is too narrow and does not reflect the router's actual capabilities.

-40°C to +65°C : This range applies to extreme environments and is typically associated with AC-powered models or specialized variants.

-20°C to +45°C : This range is incorrect for DC-powered models, as the upper limit is lower than the actual specification.

Thus, the correct answer is B , as the operating temperature for DC-powered NetEngine 8000 M6 routers is -20°C to +65°C .

Huawei'sdata center autonomous driving networkis classified asL3: conditional autonomous network. This level represents a significant advancement in network automation, where the system can handle most tasks autonomously but still requires human oversight for complex or exceptional scenarios.The levels of autonomous driving networks are defined as follows:

L0:Fully manual operations with no automation.

L1:Basic automation with assisted O&M tools.

L2:Partial autonomy, where some tasks are automated.

L3:Conditional autonomy, enabling self-driving capabilities under specific conditions.

L4:High autonomy, capable of handling nearly all tasks without human intervention.

Huawei's L3 implementation ensures efficient and reliable operations while maintaining flexibility for human intervention when needed.

Features Supported by Huawei NetEngine Routers:

Huawei NetEngine routers are designed for various use cases, including WAN, data center interconnect (DCI), and enterprise networking. However, not all models support every advanced feature.

Analysis of Features:

IPsec:Most NetEngine routers support IPsec for secure communication over public networks.

VXLAN:VXLAN support is limited to specific models optimized for data center or cloud environments.

MACsec:MACsec is supported only on certain high-end models for Layer 2 encryption.

FlexE:FlexE is a feature available only on select high-end NetEngine routers designed for 5G transport and DCI.

Conclusion:The statement is FALSE because not all NetEngine routers support all four features (IPsec, VXLAN, MACsec, and FlexE).

In IP-based networks, routers use the destination IP address in the network layer header to determine the next hop for forwarding packets. The routing table contains entries that map destination IP addresses to outgoing interfaces or next-hop routers.

Source MAC and Destination MAC are Layer 2 (data link layer) addresses and are not used for routing decisions.

Source IP is irrelevant for routing, as the router focuses on delivering the packet to the destination IP address.

Thus, the correct answer is B , as routers use the destination IP address to make forwarding decisions.

In Huawei's SD-WAN solution, the Route Reflector (RR) plays a critical role in distributing routing information across the network. However, the RR does not directly participate in service traffic forwarding. Its primary function is to facilitate efficient route exchange between SD-WAN nodes.

If the RR fails, it may temporarily disrupt the distribution of routing updates, but it will not interrupt service traffic on the entire network. Service traffic continues to flow through established paths until the RR is restored or redundancy mechanisms take effect.

To ensure high availability, the RR is often deployed in redundancy mode, but the claim that its failure will interrupt all service traffic is FALSE .