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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Key Technologies of Campus Networks | 30% | - Wired Access Technology
|
| Topic 2: VXLAN Campus Network | 20% | - BGP EVPN - VXLAN Gateway - VXLAN Concepts and Principles - VXLAN Campus Network Design |
| Topic 3: Campus Network Management and O&M | 10% | - Network O&M Tools - NCE-Campus (iMaster NCE) - Configuration Management |
| Topic 4: Campus Network Reliability | 15% | - Eth-Trunk - BFD - Stack (iStack / CSS) - VRRP |
| Topic 5: Campus Network Security | 10% | - 802.1X and MAC Authentication - Network Security Policy - Portal Authentication |
| Topic 6: Campus Network Basics | 15% | - Campus Network Architecture and Design - Campus Network Overview - VXLAN Technology Basics |
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NEW QUESTION # 105
In Huawei's SD-WAN solution, when branch equipment is deployed using "Zero-Provisioning (ZTP)," which of the following is the first step?
Answer: D
NEW QUESTION # 106
(On a VXLAN-based virtualized campus network, terminals communicate with each other through VXLAN tunnels. When the campus network needs to communicate with external networks, the data must pass through border nodes.)
Answer: B
Explanation:
Comprehensive and Detailed Explanation (200-250 words):
In a VXLAN-based virtualized campus network, user terminals located in different access locations communicate with each other overVXLAN tunnelsestablished between VXLAN Tunnel Endpoints (VTEPs).
These VXLAN tunnels form the overlay network, which abstracts the physical underlay and enables flexible Layer 2 and Layer 3 connectivity across the campus.
When communication is confined within the virtualized campus network, traffic remains inside the VXLAN overlay and is encapsulated and forwarded between VTEPs. However, when users or services inside the VXLAN network need to accessexternal networks, such as traditional IP networks, the Internet, or data centers that do not support VXLAN, traffic must exit the VXLAN overlay. This function is performed by border nodes.
Border nodes act as the boundary between the VXLAN overlay and non-VXLAN networks. They are responsible for VXLAN encapsulation and decapsulation, routing between VXLAN segments and external networks, and enforcing security and policy controls at the network edge. According to HCIP Datacom Campus Network architecture principles, all traffic entering or leaving the VXLAN-based campus must pass through border nodes to ensure proper routing, policy enforcement, and service control.
Therefore, the statement is TRUE, and option A is correct.
NEW QUESTION # 107
In Huawei's SD-WAN solution, for the scenario of "VPN communication between multiple branches", which of the following technologies can "achieve direct communication between branches without the need for headquarters relay"?
Answer: D
NEW QUESTION # 108
(Traffic of a traditional network is transmitted to the VXLAN network through the edge node. A VXLAN network accesses an external network through the ______ node.)
Answer: C
Explanation:
In a VXLAN-based campus or data center network, different node roles are defined to ensure proper traffic forwarding between traditional networks, the VXLAN overlay, and external networks. According to HCIP Datacom Campus Network documentation,edge nodes(also known as VTEPs) are responsible for encapsulating and decapsulating traffic between traditional Layer 2 or Layer 3 networks and the VXLAN overlay network. This allows legacy networks to communicate with virtualized VXLAN segments.
However, when traffic needs to leave the VXLAN fabric and accessexternal networks, such as a WAN, Internet, or another non-VXLAN domain, theborder nodeis used. The border node sits at the boundary of the VXLAN fabric and provides interconnection between the VXLAN network and external routing domains. It performs functions such as VXLAN termination, route advertisement, and traffic forwarding between overlay and underlay or external networks.
In BGP EVPN-based VXLAN deployments, the border node typically participates in BGP routing to exchange reachability information with external devices, ensuring seamless communication between VXLAN tenants and outside networks. This architectural separation improves scalability, simplifies network design, and enhances control over traffic entering or leaving the VXLAN fabric. Therefore, the correct node through which a VXLAN network accesses an external network is theBordernode.
NEW QUESTION # 109
(Which of the following fields in the ESP protocol is used to prevent replay attacks?)
Answer: D
Explanation:
Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:
Encapsulating Security Payload (ESP) is one of the core IPsec protocols used to protect data confidentiality, integrity, and authenticity. To prevent replay attacks, ESP includes aSequence Numberfield in its header.
This field plays a critical role in ensuring packet freshness.
Each ESP packet carries a monotonically increasing sequence number assigned by the sender. The receiving device maintains a sliding window and checks incoming packets against this window. If a packet arrives with a sequence number that has already been received or falls outside the valid window, the packet is considered a replay and is discarded. This mechanism effectively protects the network against replay attacks, where attackers capture legitimate packets and retransmit them to disrupt communication or bypass security controls.
TheSPI (Security Parameters Index)identifies the security association used for the packet but does not provide replay protection. TheNext Headerfield indicates the type of payload carried in the ESP packet.
Authentication Dataensures packet integrity and data origin authentication but does not independently prevent replay attacks without the sequence number mechanism.
According to HCIP Datacom Campus Network documentation and IPsec standards, replay protection in ESP is implemented using the Sequence Number field, making option A the correct answer.
NEW QUESTION # 110
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