H19-401_V1.0 Exam Dumps - Huawei Certification Questions and Answers

In network security, AAA (Authentication, Authorization, and Accounting) is a framework for controlling access to network resources. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation explains that a campus switch can function as a local AAA server when it is configured to handle AAA processes internally, without relying on an external server like RADIUS or TACACS+.

When acting as a local AAA server, the switch maintains a local user database and performs authentication (verifying user identity), authorization (determining user privileges), and accounting (tracking user activity). This is particularly useful in small networks or scenarios where connectivity to an external AAA server is unavailable.

Wi-Fi 6 (802.11ax) is an evolution of previous Wi-Fi standards, designed to improve efficiency and capacity. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation confirms:

Wi-Fi 6 operates on both the 2.4 GHz and 5 GHz frequency bands, maintaining compatibility with legacy devices while introducing enhancements like OFDMA and MU-MIMO.

Network models suit different scales. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation notes:

Directional antennas focus signals within beamwidths. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation clarifies:

Signals exist outside beamwidths, though weakened, contradicting the "no signal" claim.

Dual-gateway scenarios support multiple protocols. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation lists:

Huawei’s free mobility solution enhances user authentication and access control by synchronizing IP-security group entries across devices, ensuring seamless policy enforcement. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation specifies:

Switches: Campus switches (e.g., CloudEngine series) can act as access devices, authenticating terminals via methods like 802.1X or MAC authentication. They support IP-security group synchronization to enforce consistent policies.

APs (Access Points): Wireless APs (e.g., AirEngine series) serve as access devices in WLAN scenarios, authenticating terminals via 802.1X, portal, or MAC methods. They also participate in IP-security group synchronization for mobility.

AR (Access Routers): While AR routers (e.g., NetEngine AR series) can perform authentication in certain contexts, they are typically not access devices in the free mobility solution’s context, focusing instead on routing and WAN functions.

Huawei’s SD-WAN solution includes WAN optimization technologies to improve performance. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation specifies:

A: Packet loss mitigation (e.g., FEC/A-FEC) recovers lost packets.

B: Transmission optimization enhances link efficiency (e.g., via compression).

C: Data optimization reduces bandwidth usage (e.g., deduplication).

Local Internet access is flexible. The HCSP-Presales-Campus Network Planning and Design V1.0 documentation confirms: