Huawei HCSP-Presales-Data Center Network Planning and Design V1.0 - H19-402_V1.0 模擬練習

A. Bidirectionally isolated

B. Unidirectionally isolated

C. Not isolated

A. A virtual access point (VAP) is a VXLAN service access point. Currently, CE switches support only VAPs that are VLANs.

B. In a VXLAN packet, the source IP address is the local node ' s VTEP IP address, and the destination IP address is the remote node ' s VTEP IP address. This pair of VTEP IP addresses corresponds to a VXLAN tunnel.

C. A VirtualIF interface is a Layer 3 logical interface created for a BD.

D. On a VXLAN network, VNIs can be mapped to BDs in 1:1 mode, and a BD can function as a VXLAN network entity to forward VXLAN data packets.

A. GRE

B. IPsec VPN

C. SSL VPN

D. VXLAN

A. Centralized VXLAN gateway

B. Layer 2 VXLAN gateway

C. Default VXLAN gateway

D. Layer 3 VXLAN gateway

A. FALSE

B. TRUE

A. Forwarding paths are not optimal. Inter-subnet Layer 3 traffic between devices connected to the same gateway in a data center must be transmitted to a unified Layer 3 gateway for forwarding.

B. A distributed VXLAN gateway (leaf node) only needs to learn the ARP entries of servers connected to it, whereas a centralized Layer 3 VXLAN gateway needs to learn the ARP entries of all servers on a network. Therefore, the number of ARP entries supported is no longer a bottleneck on distributed VXLAN gateways, and the network scalability is improved.

C. The number of ARP entries supported is a bottleneck. A single Layer 3 gateway is used. For tenants whose traffic is forwarded by the Layer 3 gateway, ARP entries must be generated for the tenants on the Layer 3 gateway, but only a limited number of ARP entries are allowed by the Layer 3 gateway, which impedes data center network expansion.

D. A leaf node can function as both a Layer 2 VXLAN gateway and a Layer 3 VXLAN gateway, supporting flexible deployment.

A. A peer-link is a direct link and must be configured with link aggregation.

B. An M-LAG can be established between two devices of different types.

C. An interface configured as a peer-link interface cannot be configured with any other service.

D. If the access device is single-homed to the M-LAG, the M-LAG does not deliver the unidirectional isolation configuration of the corresponding M-LAG member interface.