HCPA-IP Network Changed H19-301_V3.0 Questions

Overview of Fixed Ports and Cards in AR Routers:

AR routers have fixed ports and modular cards that support various networking functions, including Layer 2 and Layer 3 operations.

Analysis of Each Statement:

Option A:This is incorrect. Not all Layer 2 cards support LAN/WAN switching; it depends on the specific model and card type.

Option B:This is correct. Layer 2 cards with VLANIF interfaces can perform simple Layer 3 forwarding but lack advanced features like NAT, MPLS, IPsec, and HQoS.

Option C:This is correct. Some AR router models allow WAN ports to be reconfigured as LAN ports, providing flexibility in deployment.

Option D:This is correct. Theundo portswitchcommand can be used to switch LAN ports to WAN ports, enabling Layer 3 functionality.

Conclusion:The correct statements are Options B, C, and D.

The physical layer (Layer 1) of the OSI model is responsible for transmitting raw bitstreams over a physical medium. When data reaches this layer, it is converted into signals compatible with the transmission medium being used. For example:

Optical signalsare used in fiber-optic cables.

Electrical signalsare used in copper cables (e.g., Ethernet).

Electromagnetic wavesare used in wireless communication (e.g., Wi-Fi or radio waves).

This conversion ensures that data can be transmitted efficiently across different types of media. The statement is therefore correct.

Overview of Huawei Controllers:

Huawei offers a range of controllers under the iMaster NCE series, each designed for specific use cases.

Analysis of Each Controller:

iMaster NCE-Fabric:Focuses on data center network automation and management. It does not support unified LAN-WAN management.

iMaster NCE-WAN:Specializes in WAN management, particularly for SD-WAN solutions. It does not manage LANs.

iMaster NCE-Campus:Designed for campus networks, this controller supportsunified LAN-WAN management, enabling centralized control of both wired and wireless networks.

iMaster NCE-IP:Focuses on traditional IP/MPLS network management and does not support unified LAN-WAN management.

Conclusion:The correct answer is Option C, as iMaster NCE-Campus supports unified LAN-WAN management.