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H35-211_V2.5 Dumps 2026 - New Huawei H35-211_V2.5 Exam Questions
NEW QUESTION # 61
The QoS should be planned according to service requirements. Generally, a service with a higher priority adopts the ( ) scheduling mode.
- A. WRR
- B. RR
- C. PQ
- D. DRR
Answer: C
Explanation:
Huawei QoS describes PQ (Priority Queuing) as the strict-priority scheduler ensuring that high-priority queues are served first before lower-priority queues. WRR/DRR/RR are weighted or round-robin modes intended for fair sharing and do not guarantee strict preemption for latency-sensitive traffic. Therefore, PQ is selected for higher-priority services (e.g., voice, control).
References: HCIP-Access V2.5 Study Guide - QoS Fundamentals and Queue Scheduling on OLT/ONU (PQ, WRR/DRR/RR behaviors).
NEW QUESTION # 62
The number of users under the OLT can also determine whether the VLA is single-layer or dual-layer VLA. Single-layer VLANs can be used when the number of users is small, and dual-layer VLANs must be used when the need to distinguish services and the number of users is second to ().
- A. 4K
- B. 2K
- C. CS
- D. 1K
Answer: A
NEW QUESTION # 63
(Radio) When using the SIP protocol, a local digitmap is used for matching. If you use the default matching mode to match a 7-digit number beginning with 7727, which of the following configurations is valid?
- A. local-digitmap add huawei normal 7727
- B. local-digitmap add huawei normal 7727xxx/7726.
- C. local-digitmap add huawei normal 772./7727xxx
- D. local-digitmap add huawei normal 7727xxx/7727
Answer: D
Explanation:
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.
References: HCIP-Access V2.5 Study Guide - Voice access configuration, local digitmap syntax (x as digit,
/ as rule separator) and default matching behavior.
NEW QUESTION # 64
The ports in an OLT upstream protection group must be in the same protection group, and the same port cannot belong to different protection groups.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 65
(Radio) When the 0LT global or VLAN service template enables the PITP switch, the service port allows the upstream packet to be carried, the Vendor tag switch, and the user to carry the vendor upstream packet In the case of tarf information, the following statement regarding olts to PITP message processing strategies is correct
- A. OlT is left with the Vendor tag carried in the upstream PITP message, plus the local Vendor tag
- B. OLT forwards the USER-side PITP message directly without any processing
- C. OLT drops upstream PITP packets
- D. OLT adds a local Vendor tap to the upstream PITP packet
Answer: A
NEW QUESTION # 66
Max-Forwards fields can be used in SIP messages to solve loop problems and avoid endless packet forwarding.
- A. wrong
- B. Right
Answer: B
Explanation:
Right. The SIP Max-Forwards header limits how many SIP elements a request can traverse. Each proxy decrements the value by one; when it reaches zero, the message must not be forwarded, preventing infinite loops and yielding responses like 483 (Too Many Hops). RFC 3261 (Sections 8.1.1.6, 16.6, 20.22) defines this behavior; later work further discusses loop mitigation
NEW QUESTION # 67
(Multiple select) When there is a backbone fiber break or OLT does not detect the expected optical signal
(L0S) alarm, the possible cause is that
- A. Rogue ONU exists under the port
- B. The port backbone fiber is faulty
- C. The port laser is turned off
- D. Any power loss or failure under the port
Answer: B,C,D
NEW QUESTION # 68
Under the H.248 protocol, if the signaling IP and media IP are both 10.1.1.100/8, and the voice gateway is
10.1.1.1, when configuring VoIP service, which command is incorrect?
- A. Use the reset coldstart command under the H.248 interface so interface property configuration takes effect
- B. Using the command ip address signaling 10.1.1.100 10.1.1.1 in voip view to configure the signaling IP
- C. Use the if-h248 attribute command to configure interface properties under the H.248 voice interface
- D. Using the command ip address media 10.1.1.100 10.1.1.1 in voip view to configure the media IP
Answer: B
Explanation:
On Huawei access devices/OLTs, VoIP/H.248 setup typically includes:
In voip view, configure media IP with gateway:
ip address media <media-ip> <gateway> - e.g., ip address media 10.10.10.10 10.10.10.1.
Configure signaling IP without a gateway parameter:
ip address signaling <signaling-ip> - e.g., ip address signaling 10.10.10.10.
Add/enter the H.248 interface and apply properties with if-h248 attribute ....
It's common to reset/enable the MG interface after attribute changes; many guides show reset coldstart (or reset) issued under the H.248 interface to activate the interface.
Authoritative configuration examples show media takes an IP and gateway, but signaling takes only the IP.
Therefore, option D (attempting to configure signaling with a gateway parameter) is incorrect. Options A and C match documented syntax and workflow. Option B reflects the documented practice of issuing a reset (often written as reset coldstart) under the H.248 interface to apply/enable, as shown in Huawei-focused configuration guides.
NEW QUESTION # 69
(Multiple choice) When the OLT main control board CPU is detected to be continuously high, the following are possible causes:
- A. The user logged in illegally
- B. Rogue ONU
- C. Network loops
- D. Cyber attacks
Answer: A,B,C,D
Explanation:
A persistently high CPU on the OLT main control board is typically driven by excessive control-plane load or abnormal traffic patterns. Common causes include:
Illegal login attempts generating authentication and logging overhead (A) Layer-2 loops leading to storms and protocol churn (B) DoS/scan/attack traffic stressing control/management processing (C) Rogue/misbehaving ONUs causing frequent state changes, registration flaps, or abnormal report traffic (D) All listed factors are recognized contributors to elevated CPU on access OLTs.
References: HCIP-Access V2.5 Study Guide (OLT Maintenance and Fault Location); Huawei OLT Maintenance Guide (High-CPU Causes and Handling: Loops, Attacks, Unauthorized Access, and ONU Abnormalities).
NEW QUESTION # 70
(Single choice) The following statement about the PITP protocol is incorrect
- A. The PITP protocol includes PITP P mode and PITP V mode
- B. Bind the authentication of the information to avoid the theft and roaming of the user account
- C. PITP P mode can also be called PPPoE+ mode
- D. The purpose of the PITP feature is to provide the upper authentication server with the physical location information of the access user, and the BRAS device can realize the user account and the press position after obtaining the user access location information
- E. In PITP V mode, the user's physical location information is added to the PPPoE message sent by the user side to cooperate with the upper-level server for user authentication
Answer: B
Explanation:
PITP (Port Identification Transparent Transmission) is used on access networks to carry a user's physical access-location to the upper AAA/BRAS. It has two working forms: P-mode (PPPoE+)-injecting location identifiers into PPPoE discovery-and V-mode (Vendor-tag)-carrying vendor/location tags transparently upstream. The purpose is to let the upper server associate user credentials with access location and, by policy, restrict roaming. Options A, B, D, and E correctly describe these behaviors/terms. Option C is inaccurate as written: PITP itself does not "bind the authentication" or inherently "avoid theft/roaming"; it only delivers location info. Preventing credential theft/roaming is achieved by AAA/BRAS policy that uses the PITP- carried location, not by PITP alone.
NEW QUESTION # 71
When the H.248 protocol is used to deploy the VoIP service, the registration information sent by the MG to the MGC contains the following information:
Services {Method=Restart Reason=[901]}
Which command can trigger the information?
- A. Reset coldstart
- B. Reboot system
- C. Board restart
- D. ONT re-register
Answer: C
Explanation:
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.
References: HCIP-Access V2.5 Study Guide (H.248 ServiceChange usage and restart reporting); Huawei VoIP/MG Board Maintenance Guide (warm vs cold restart indications in ServiceChange).
NEW QUESTION # 72
(Multi-select) Query ppPOE simu-lation results on the MDU side as follows From the query results, it can be judged ()
- A. The service configuration of ppPoE users is normal
- B. The link between MDU tone setting and BRAS is ok
- C. The MDU management IP is configured correctly
- D. PPPoE user account and authentication method are correct
Answer: A,B,D
NEW QUESTION # 73
Sequence of upstream QoS processing on the OLT:
- A. Traffic classification > Marking > Traffic policing > Congestion avoidance > Congestion management
- B. Traffic classification > Marking > Congestion avoidance > Traffic policing > Congestion management
- C. Traffic classification > Marking > ACL policy > Congestion avoidance > Congestion management
- D. Marking > Traffic classification > Congestion avoidance > Traffic policing > Congestion management
Answer: A
NEW QUESTION # 74
(Radio) When configuring multicast services on MA5600T/MA5680T, the programs of multicast VLANs are statically configured. Which of the following must be configured, otherwise the multicast programs may not be able to be watched?
- A. igmp priority
- B. igmp preview
- C. igmp program
- D. igmp profile
Answer: C
Explanation:
On Huawei OLTs (e.g., MA5600T/MA5680T), deploying IPTV/multicast commonly uses a program list (channel list) to map program numbers to multicast group addresses-this is configured with igmp program.
When programs are statically configured under the multicast VLAN, the program definitions themselves are mandatory; without them, set-top boxes cannot select (zap to) channels by program number/address mapping and the OLT cannot correctly forward the requested multicast streams.
NEW QUESTION # 75
If a rogue ONU exists on a PON port of the OLT and has gone online, another ONT or all ONTs connected to the same PON port may go offline or go online and offline frequently.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
A rogue ONU that transmits out of schedule or at abnormal optical levels can disrupt upstream time-slotting on the PON, causing collision and interference. This can force other ONUs on the same PON to deregister or flap frequently. Huawei OLTs provide rogue ONU detection/isolation to protect the PON.
References: HCIP-Access V2.5 Study Guide (PON Faults-Rogue ONU Impact and Handling); Huawei OLT Maintenance Guide (Rogue ONU detection and isolation).
NEW QUESTION # 76
When ont fails or the hardware needs to be replaced, the ONT service needs to be replaced, and then the ONT service needs to be removed on the OLT, and then the new ONT service needs to be registered
- A. Right
- B. wrong
Answer: B
NEW QUESTION # 77
In the evolution of EPON to 10 G EPON, a smooth transition is achieved at the local level by adding WDM WDM modules, and ODNs coexist
- A. False
- B. True
Answer: A
NEW QUESTION # 78
The establishment, maintenance and dismantling of the word path between the SIP user and the server are
done through the interaction of the --series of messages, so that every information contained in the SIP text has
a --nature, There is no phenomenon in which a single information value appears multiple times.
- A. Right
- B. wrong
Answer: B
NEW QUESTION # 79
In the NGN system, the ( ) adopts the packet technology to provide a unified integrated transmission platform with high reliability, QoS guarantee, and large capacity.
- A. Edge access layer
- B. Core switching layer
- C. Service management layer
- D. Network control layer
Answer: B
Explanation:
In NGN architectures, services (voice, video, data) converge over a packet-based backbone. The core switching layer provides the unified transport using IP/MPLS and related QoS mechanisms, delivering high reliability and large-capacity switching for all upper-layer services. The control and management layers orchestrate services, while the edge/access layer aggregates users-but the packet-based integrated transmission platform itself is the role of the core.
References: HCIP-Access V2.5 study content (NGN overview, layered architecture, and packet-based core transport responsibilities).
NEW QUESTION # 80
If a customer needs to protect the ONU trunk optical path but does not need to protect the ONU branch optical paths, which PON line protection mode should be used?
- A. Type C
- B. Type A
- C. Type B
- D. Type D
Answer: C
Explanation:
In Huawei GPON/EPON protection planning, Type B protection uses two PON ports on the same OLT with dual feeder (trunk) fibers into the same ODN. It protects the OLT PON port and the feeder/trunk optical path while branch/distribution fibers to ONUs are not protected. This exactly matches the requirement "protect trunk; do not protect branches." References: HCIP-Access V2.5 Study Guide - PON Line Protection (Type A/B/C definitions and protection scope).
NEW QUESTION # 81
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Huawei H35-211_V2.5 (HCIP-Access V2.5) Certification Exam is suitable for professionals who work with Huawei access network products, including routers, switches, and access controllers. HCIP-Access V2.5 certification is ideal for network engineers, network administrators, and other IT professionals who are responsible for designing, deploying, and managing access networks. H35-211_V2.5 exam is also suitable for those who wish to enhance their knowledge and skills in the access network field.
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