Pass the Huawei HCIA-Datacom H12-811_V1.0 Questions and answers with ExamsMirror

In Huawei’s VRP, the default preference value for OSPF routes is generally 10, but this value can be adjusted based on configuration requirements. Therefore, it is not necessarily always set to 10, as network administrators may alter the preference to prioritize different routes. This flexibility allows customization based on the network's specific routing needs​.

When HostA wants to send data to HostC, the following steps occur:

HostA checks if HostC is in the same subnet:

HostA and HostC are in different network segments, meaning HostA must send the packet to its default gateway (RTA, G0/0/0) to reach HostC.

HostA needs the MAC address of its gateway (RTA G0/0/0):

Since ARP (Address Resolution Protocol) is used to resolve IP to MAC addresses, HostA will send an ARP Request to obtain the MAC address of G0/0/0 of RTA.

RTA forwards the packet to HostC:

Once HostA sends the packet to RTA (using G0/0/0's MAC), RTA will route it to the correct network segment and send it to HostC through G0/0/1.

Why the Other Options Are Incorrect:

Option A (HostC) - Incorrect:

HostA does not send an ARP request for HostC because HostC is in a different subnet.

Option B (G0/0/1 of RTA) - Incorrect:

HostA only communicates with its directly connected gateway (G0/0/0), not G0/0/1.

Option C (SWA) - Incorrect:

Switches (SWA, SWB) operate at Layer 2 and do not require ARP.

Final Answer: D (G0/0/0 of RTA)

OSPF Packet Types:

LSA (Link State Advertisement): Contains topology information that routers use to build their LSDB.

LSU (Link State Update): Used to transmit multiple LSAs.

LSR (Link State Request): Requests specific LSAs from a neighbor router.

LSACK (Link State Acknowledgment): Confirms receipt of LSU packets​​.

Correct Packet for Acknowledgment:The LSACK packet is specifically designed to acknowledge LSU packets. Without acknowledgment, the LSU might be retransmitted unnecessarily.

Correct Answer:The OSPF packet used for acknowledgment is D (LSACK).

To enable an FTP server on a Huawei router, the following commands are required:

Create the FTP user and set the allowed service:

local-user huawei service-type ftp

Set the FTP user's password:

local-user huawei password cipher huawei

Specify the root directory for FTP access:

local-user huawei ftp-directory flash:/dhcp/

Enable the FTP server function:

ftp server enable

Since all four commands are required, the correct answers are A, B, C, and D.

In trunk mode, the interface can forward frames tagged with VLANs specified in the allow-pass list (here, VLAN 100) without removing tags. However, if an untagged frame is received, it is assigned to the PVID (here, VLAN 200). This configuration allows both tagged and untagged traffic, with the PVID determining the VLAN for untagged frames​.