Huawei Updated H35-211_V2.5 Exam Questions and Answers by emilie

In campus/access networks, IGMP (Internet Group Management Protocol) operates between hosts and the first-hop multicast router/querier on the local subnet. It controls host group membership (Join/Leave/Query/Report), allowing the device to learn which receivers are interested in specific multicast groups and to populate/maintain the local multicast forwarding state.

Huawei digitmap syntax uses x to represent any single digit 0–9. To match a 7-digit number starting with 7727, the correct pattern is 7727xxx.

A adds an unrelated rule 7726. and uses . incorrectly as a wildcard; not recommended.

B uses 772. (invalid for the intended match) plus 7727xxx; the first part is improper.

C matches only the 4-digit string 7727.

D contains 7727xxx (correct) and an additional 7727 rule; although the extra rule is unnecessary, it does not prevent correct matching.

On Huawei OLTs, the service-port is a binding between the user-side access (ONT/port) and a VLAN/GEM channel, and it supports traffic policing (CAR/rate-limit) by referencing a traffic/queue profile. Traffic shaping (buffer-based smoothing, token bucket with queue drain) is provided on ports/queues or GEM/LLID directions, not on the service-port object itself. Therefore, shaping is not performed via the service-port; applying a traffic profile there enforces policing, not shaping.

In an H.248 (Megaco) control model, the MGC is the controller that issues provisioning/connection-control commands such as Add, Modify, Subtract, AuditValue, AuditCapabilities to the MG. The MG (Media Gateway) can initiate only specific messages toward the MGC to announce state changes or report detected events—namely ServiceChange (to indicate restart, failure, availability changes, etc.) and Notify (to report observed events collected per event descriptor). Therefore, among the listed options, the commands that the MG itself can send are ServiceChange and Notify.