Pass the Huawei HCIP-Access H35-211_V2.5 Questions and answers with Dumpstech

In capacity planning, the planned bandwidth is computed as:

Planned Bandwidth = Users × Penetration × Concurrency × Online Bandwidth × Duty Cycle × Channels × Coverage.

Substituting the values: 500 × 0.5 × 0.4 × 4 Mbit/s × 0.125 × 1 × 0.7

= 250 × 0.4 × 4 × 0.125 × 0.7

= 100 × 4 × 0.125 × 0.7

= 400 × 0.125 × 0.7

= 50 × 0.7

= 35 Mbit/s.

This matches the given result, so the statement is true.

In IP multicast, only one copy per multicast group (program) is forwarded upstream, regardless of how many users are watching it. Replication happens downstream at the access/edge, not toward the core. Therefore the upstream traffic equals the number of active multicast groups × per-group bitrate:

20 programs × 2 Mbit/s = 40 Mbit/s.

This behavior is consistent with Huawei’s multicast feature descriptions and general multicast principles (IGMP/PIM), which explain that multicast traffic is sent as a single flow per group and replicated only where branching occurs, not multiplied by user count.

The MG reports availability and restarts to the MGC using H.248 ServiceChange with Method=Restart. The Reason code distinguishes the type of restart. In Huawei implementations aligned with H.248 semantics, Reason=[901] corresponds to a warm/warmboard restart scenario rather than a full cold start.

Board restart triggers a warm restart of the voice board/MG, producing ServiceChange { Method=Restart, Reason=901 }.

Reset coldstart performs a cold start, which would use a different reason code (cold start), not 901.

Reboot system generally implies a broader device reboot similar to cold start semantics, not 901.

ONT re-register affects ONU registration and does not cause the MG to announce a ServiceChange restart to the MGC.

10G-EPON is designed for coexistence with EPON on the same ODN by using separate downstream wavelengths and dual-rate upstream mechanisms. Operators can realize a smooth upgrade at the OLT (local end) by inserting WDM mux/demux modules (or using dual-rate PON ports) while continuing to use the existing ODN fiber plant and splitters. This is a standard migration path emphasized in HCIP-Access materials for PON evolution.

XGS-PON downstream line rate is ~10 Gbit/s. When 12 terminals share a PON tree concurrently, the rough per-terminal share is 10,000 Mbit/s ÷ 12 ≈ 833 Mbit/s, commonly expressed as “about 800 Mbit/s.” This aligns with planning examples in HCIP-Access where downstream concurrency on XGS-PON is calculated by dividing the port rate by the number of active ONUs/APs on the splitter.

For ONT zero-touch on eSight/iMaster NCE-Campus, the prerequisite is that the OLT is onboarded and provisioned (communication parameters, northbound credentials, templates) so that discovered ONTs can inherit policies and be auto-activated. During incremental OLT configuration, eSight does push/update the OLT’s configuration (templates, profiles, authentication rules). Saying “do not provision OLT” is therefore false.

B is incorrect: NCE deployment options (on-premises, private cloud, public cloud) are determined by service and architecture needs, not by which vendor provides the physical devices.

D is incorrect: Deployment duration varies with hardware platforms, virtualization stacks, and software environments; it is not the same across scenarios.

A and C are correct: NCE exposes NBIs for OSS integration and operates at the analysis/control layer to collect, analyze, and predict issues using big-data/AI capabilities.

The statement is wrong. SIP explicitly allows several header fields to appear multiple times within a request or response—for example, Via (one per hop), Route, Record-Route, and Contact may legitimately occur more than once. This is fundamental to SIP routing behavior, where each proxy appends a new Via entry. RFC 3261 explains processing based on the top Via among potentially multiple Via headers, which directly contradicts the claim that “a single information value never appears multiple times

According to IEEE 802.3av wavelength planning adopted by Huawei 10G-EPON, downstream uses 1577 nm and 10G upstream uses 1270 nm. In asymmetric coexistence, 1G-EPON upstream uses 1310 nm, but for 10G-EPON upstream specifically the wavelength is 1270 nm. Therefore the correct upstream wavelength for 10G-EPON is 1270 nm.

IPv4 multicast (historically “Class D”) occupies the address block 224.0.0.0 through 239.255.255.255. Any upper bound of 238.255.255.255 is incorrect because it excludes the full 239/8 administratively scoped range. This is standardized in the IANA IPv4 Multicast Address Space registry and reflected in foundational multicast specifications.