Huawei Updated H19-301_V3.0 Exam Questions and Answers by naia

MACsec(Media Access Control Security) is aLayer 2 security protocolthat provides end-to-end encryption for Ethernet frames. It ensuresconfidentiality, integrity, and authenticityof data on wired networks.

A (Service data encryption):Encrypts Ethernet frames to protect against eavesdropping.

B (Data frame integrity check):Prevents data tampering and corruption.

C (Replay protection):Detects and prevents replay attacks by using unique sequence numbers.

D (Data source authenticity verification):Ensures that received data is from a legitimate source by using cryptographic authentication.

????Reference:HCSA-Presales-IP Network Official Documentation – MACsec Features & Security Benefits

While Huawei'sUSG series firewallsinclude basicanti-DDoS capabilities, they are not designed to completely replace standaloneanti-DDoS products. Firewalls primarily focus on access control, threat prevention, and policy enforcement, whereas dedicated anti-DDoS solutions offer advanced features like large-scale traffic scrubbing, anomaly detection, and mitigation for massive DDoSattacks.For environments facing sophisticated or volumetric DDoS threats, standalone anti-DDoS appliances or cloud-based services are recommended to complement firewall capabilities.

ALocal Area Network (LAN)connectsdevices within a limited geographic areasuch as an office, campus, or home.

LANs typically include:

Switches

Routers

Access Points

Computers, printers, and other end devices

LANs operate using Ethernet or Wi-Fiand providehigh-speed communication and resource sharingwithin the network.

Unlike WANs (Wide Area Networks), LANs do not rely on carrier-leased connectionsand cover smaller areas.

????Reference:HCSA-Presales-IP Network Official Documentation – LAN and Network Fundamentals

Fat APs(Autonomous APs) operateindependentlyand donotrequire a centralized wireless controller.

Theyperform all wireless functions, including:

Wireless authentication

Encryption

User access management

Data packet forwarding

Fit APs, on the other hand, depend on a wireless controllerfor centralized management.

Fat APs are best suited for small-to-medium networkswhere centralized control is unnecessary.

????Reference:HCSA-Presales-IP Network Official Documentation – Fat vs. Fit APs