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| Section | Objectives |
|---|---|
| Data Center Switching Technologies | - Ethernet Switching in Data Centers
|
| O&M and Troubleshooting | - Operations and Maintenance
|
| Data Center Routing | - Routing Protocols in DC Environment
|
| VXLAN Technology | - Overlay Networking
|
| Data Center Network Fundamentals | - Data Center Architecture Overview
|
| Network Security and Reliability | - Data Center Security Mechanisms
|
| SDN and Network Automation | - Software Defined Networking
|
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NEW QUESTION # 25
"1-3-5" troubleshooting of the CloudFabric intelligent O&M solution can detect, locate, and rectify faults from multiple dimensions. Which of the following are not dimensions supported by this function? (Select All that Apply)
Answer: B
Explanation:
Huawei's CloudFabric intelligent O&M solution, leveraging iMaster NCE-Fabric and FabricInsight, uses the "1-3-5" principle (detect within 1 minute, locate within 3 minutes, rectify within 5 minutes) to handle faults. This approach analyzes faults across multiple dimensions. Let's evaluate each option:
A . Device: This is supported. The solution monitors device-level metrics (e.g., CPU, memory) to detect and locate faults. SUPPORTED.
B . Protocol: This is supported. Protocol issues (e.g., OSPF conflicts, BGP errors) are analyzed for fault detection and resolution. SUPPORTED.
C . Service: This is supported. Service-level faults (e.g., tenant connectivity, VPC issues) are tracked and addressed. SUPPORTED.
D . Application: This is not supported. The "1-3-5" troubleshooting focuses on network infrastructure (devices, protocols, services, configurations), not application-layer issues, which are outside its scope. NOT SUPPORTED.
E . Configuration: This is supported. Configuration errors (e.g., mismatched VNIs) are detected and rectified as part of the process. SUPPORTED.
Thus, D (Application) is not a dimension supported by the "1-3-5" troubleshooting function.
NEW QUESTION # 26
Which feature enables multiple physical interfaces between switches to operate as a single logical connection while providing redundancy and higher bandwidth?
Answer: A
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 # 27
Which of the following statements is false about VXLAN tunnel establishment?
Answer: D
Explanation:
VXLAN (Virtual Extensible LAN) tunnels are used to encapsulate Layer 2 traffic over a Layer 3 network, a key component in Huawei's CloudFabric data center solutions. Let's evaluate each statement:
A). A VXLAN tunnel is identified by a pair of VTEPs: This is true. A VXLAN tunnel is identified by the pair of VXLAN Tunnel Endpoint (VTEP) IP addresses (local and remote), along with the VNI (VXLAN Network Identifier). This ensures unique tunnel identification. TRUE.
B). After a tunnel is established, if one end of the tunnel goes Down, the other end may not go Down:
This is true. VXLAN tunnels are unidirectional, and the status of one end does not automatically affect the other unless the underlay network connectivity (e.g., Layer 3 reachability) is lost. The remote VTEP may remain operational if it can still encapsulate/decapsulate traffic. TRUE.
C). For a static tunnel, you need to manually configure the local and remote VNIs: This is true. In a static VXLAN tunnel, administrators must manually configure the VNI and VTEP IP addresses on both ends, as there is no dynamic control plane (e.g., BGP EVPN) to automate the process.
TRUE.
D). Dynamic tunnels depend on EVPN Type 5 routes to transmit information: This is false.
Dynamic VXLAN tunnels rely on BGP EVPN as the control plane, but Type 5 routes (IP Prefix routes) are specifically used for advertising host IP routes and external network routes, not for general tunnel establishment. Dynamic tunnel setup primarily uses Type 2 (MAC/IP Advertisement) and Type 3 (Multicast) routes to exchange VNI and VTEP information. Type 5 routes are relevant for Layer 3 routing, not the initial tunnel setup. FALSE.
Thus, D is the false statement because dynamic tunnels depend on EVPN Type 2 and Type 3 routes, not Type 5, for initial establishment.
NEW QUESTION # 28
The figure shows an incomplete VXLAN packet format.
Which of the following positions should the VXLAN header be inserted into so that the packet format is complete?
Answer: C
Explanation:
The VXLAN header should follow the UDP header (Position 3), but since Position 3 is not an option and the insertion point is before the Inner Ethernet Header (Position 4), the question's options seem misaligned. The correct technical position is after UDP, but the closest logical choice per the provided options, assuming a numbering error, is D (2) as the insertion point before the inner headers begin. However, per Huawei VXLAN standards, it's after UDP, suggesting a figure correction. The answer is D (2) based on the given options' intent.
NEW QUESTION # 29
Which of the following is not included in the physical architecture of a server?
Answer: A
Explanation:
The physical architecture of a server refers to the tangible and low-level components that constitute the server itself, distinct from logical or software layers. Let's evaluate each option:
A . Application: Applications are software running on top of an operating system or virtual machine, not part of the server's physical architecture. They belong to the logical or user layer, not the physical structure. Not Included.
B . VMmonitor (Hypervisor): Assuming "VMmonitor" refers to a hypervisor (e.g., KVM or Xen), it's a software layer, but in Type-1 hypervisor scenarios, it runs directly on hardware, managing VMs. In Huawei's context, it's considered part of the server's operational architecture when deployed physically. Included.
C . OS (Operating System): The OS (e.g., Linux, Windows) runs directly on server hardware or within a VM. In bare-metal servers, it's a core component of the physical deployment. Included.
D . Hardware: Hardware (e.g., CPU, RAM, NICs, disks) is the foundational physical architecture of a server, providing the physical resources for all operations. Included.
Thus, A (Application) is not part of the physical architecture, as it's a higher-level software entity, not a physical component.
NEW QUESTION # 30
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