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| Section | Weight | Objectives |
|---|---|---|
| CloudEngine Switch Configuration | 20% | - VXLAN Configuration on CloudEngine - QinQ and VLAN Extension Technologies - BGP EVPN Configuration - CloudEngine OS Overview |
| CloudFabric Data Center Network Solution Overview | 10% | - Data Center Network Challenges and Trends - CloudFabric Solution Components and Functions - Huawei CloudFabric Solution Architecture |
| Data Center Interconnect | 10% | - DCI Technology Overview - EVPN Multi-Site Solution - Cross-Domain VXLAN Extension |
| VXLAN and EVPN Technologies | 20% | - VXLAN Principles and Deployment - BGP EVPN Fundamentals - EVPN Route Types and Applications - Multi-Site VXLAN EVPN Deployment |
| Data Center Network Security and O&M | 10% | - Traffic Audit and Monitoring - Network Troubleshooting Methods - Network Security Policies - iMaster NCE-FabricInsight Analytics |
| Underlying Transport Network Technologies | 15% | - Spine-Leaf Architecture - Underlay Network Planning and Design - Overlay Network Technologies (VXLAN, NVGRE) |
| iMaster NCE-Fabric Management | 15% | - Fabric Management Concepts - Network Simulation and Verification - Overlay Network Configuration - Underlay Network Automation Deployment |
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NEW QUESTION # 41
Which of the following statements is false about M-LAG deployment?
Answer: C
Explanation:
M-LAG (Multi-Chassis Link Aggregation) on Huawei CE series switches enhances high availability and load balancing by making two switches appear as one. Let's evaluate each statement:
A . Multi-level M-LAG is mainly used to construct a large Layer 2 network in a DCN or directly connect DCNs at Layer 2: This is true. Multi-level M-LAG extends the topology across multiple layers or data centers, facilitating large Layer 2 domains, a common use case in Huawei DCNs. TRUE.
B . In multi-level M-LAG networking, you can manually configure the root bridge to prevent STP loops: This is true. Manual configuration of the root bridge (e.g., using STP priority) is supported to optimize path selection and prevent loops, especially in complex M-LAG setups. TRUE.
C . Multi-level M-LAG must be configured based on V-STP: This is false. While V-STP can be used to prevent loops, M-LAG does not require V-STP specifically. Standard STP, RSTP, or MSTP can also be configured, depending on the network design. The requirement is loop prevention, not a mandatory V-STP dependency. FALSE.
D . M-LAG networking can be classified into single-level M-LAG networking and multi-level M-LAG networking: This is true. Single-level M-LAG connects two switches directly to devices, while multi-level M-LAG extends across additional layers or devices, a recognized classification in Huawei documentation. TRUE.
Thus, C is the false statement because multi-level M-LAG does not mandate V-STP configuration.
NEW QUESTION # 42
Which feature enables multiple physical interfaces between switches to operate as a single logical connection while providing redundancy and higher bandwidth?
Answer: D
Explanation:
LACP aggregates several physical links into one logical interface, increasing bandwidth while providing redundancy. Traffic can continue across remaining links if one member fails, improving both availability and resource utilization.
NEW QUESTION # 43
Which of the following statements is false about VM service traffic in the computing scenario?
Answer: D
Explanation:
In Huawei's CloudFabric computing scenario, VM service traffic involves virtualized environments with VXLAN overlays and traditional VLANs. Let's evaluate each statement:
A). Traffic inside a fabric is VXLAN encapsulated: This is true. Within a CloudFabric network, VXLAN encapsulation is used to transport traffic across the fabric, enabling overlay networking for VMs.
TRUE.
B). Inter-VPC traffic must pass through the firewall: This is false. Inter-VPC (Virtual Private Cloud) traffic can be routed directly between VPCs using a gateway or router (e.g., with EVPN Type 5 routes) without necessarily passing through a firewall, depending on security policies. Firewalls are optional for inter-VPC traffic, not mandatory. FALSE.
C). Traffic between VAS devices and service leaf nodes is VLAN encapsulated: This is true.
Value- Added Services (VAS) devices (e.g., load balancers) often connect to service leaf nodes using VLAN encapsulation, especially in traditional or hybrid deployments. TRUE.
D). Traffic between vSwitches on virtual servers and server leaf nodes is VLAN encapsulated:
This is true. Traffic from virtual switches (vSwitches) on hypervisors to physical server leaf nodes typically uses VLAN encapsulation over the physical NICs, before VXLAN overlay if applicable.
TRUE.
Thus, B is the false statement because inter-VPC traffic does not always require a firewall.
NEW QUESTION # 44
A company plans to eliminate STP loops while supporting active forwarding across multiple Layer
2 paths in a data center. Which architecture best satisfies this requirement through Layer 3 forwarding and VXLAN encapsulation?
Answer: D
Explanation:
The spine-leaf architecture provides predictable latency, ECMP forwarding, and Layer 3 underlay connectivity. VXLAN overlays eliminate traditional Layer 2 loop concerns and avoid dependence on STP for traffic forwarding between servers.
NEW QUESTION # 45
Which of the following technologies are Layer 4 load balancing technologies? (Select All that Apply)
Answer: A,B,D
Explanation:
Layer 4 load balancing operates at the transport layer (OSI Layer 4), using TCP/UDP protocols to distribute traffic based on information like IP addresses and port numbers, without inspecting the application-layer content (Layer 7). Let's evaluate each option:
A). Nginx: Nginx is a versatile web server and reverse proxy that supports both Layer 4 and Layer
7 load balancing. In its Layer 4 mode (e.g., with the stream module), it balances TCP/UDP traffic, making it a Layer 4 load balancing technology. This is widely used in Huawei's CloudFabric DCN solutions for traffic distribution. TRUE.
B). PPP (Point-to-Point Protocol): PPP is a Layer 2 protocol used for establishing direct connections between two nodes, typically in WAN scenarios (e.g., dial-up or VPNs). It does not perform load balancing at Layer 4 or any layer, as it's a point-to-point encapsulation protocol.
FALSE.
C). LVS (Linux Virtual Server): LVS is a high-performance, open-source load balancing solution integrated into the Linux kernel. It operates at Layer 4, using techniques like NAT, IP tunneling, or direct routing to distribute TCP/UDP traffic across backend servers. It's a core Layer 4 technology in enterprise DCNs. TRUE.
D). HAProxy: HAProxy is a high-availability load balancer that supports both Layer 4 (TCP mode) and Layer 7 (HTTP mode). In TCP mode, it balances traffic based on Layer 4 attributes, making it a Layer 4 load balancing technology. It's commonly deployed in Huawei DCN environments.
TRUE.
Thus, A (Nginx), C (LVS), and D (HAProxy) are Layer 4 load balancing technologies. PPP is not.
NEW QUESTION # 46
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