[May 05, 2026] New Updated H35-211_V2.5 Exam Questions 2026
Updated Free Huawei H35-211_V2.5 Test Engine Questions with 125 Q&As
NEW QUESTION # 73
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. wrong
- B. Right
Answer: A
NEW QUESTION # 74
Which of the following statements about congestion avoidance is correct?
- A. The random drop probability in weighted early drop is related to the upper and lower thresholds.
- B. When the number of packets exceeds the early drop threshold, packets are randomly dropped to avoid queue congestion without affecting services.
- C. Early drop indicates that packets are dropped before the number of packets reaches the preset threshold of packet numbers. This prevents queue congestion.
- D. Early drop and tail drop cannot coexist.
Answer: C
NEW QUESTION # 75
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. True
- B. False
Answer: B
NEW QUESTION # 76
Which of the following H.248 commands can be sent by the MG?
- A. AuditValue
- B. ServiceChange
- C. Add
- D. Notify
Answer: D
NEW QUESTION # 77
(Single choice) The following statement about ssH connection is incorrect, yes
- A. From a client perspective, SSH provides two levels of security authentication.
- B. The ssH protocol is working at the network layer
- C. ssH can be applied to remote encryption of encrypted file transfers over remote encryption connections
- D. The ssH protocol encrypts all transmitted data, effectively preventing information leakage problems
during remote management
Answer: B
NEW QUESTION # 78
During troubleshooting, you can obtain multiple requests and response messages in a session by capturing packets. Which of the following options can be used to confirm the mapping between requests and response packets?
- A. CSseq
- B. Branch ID
- C. From
- D. Tag
Answer: A,B
NEW QUESTION # 79
(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 adds a local Vendor tap to the upstream PITP packet
- B. OLT drops upstream PITP packets
- C. OlT is left with the Vendor tag carried in the upstream PITP message, plus the local Vendor tag
- D. OLT forwards the USER-side PITP message directly without any processing
Answer: C
NEW QUESTION # 80
Which of the following statements about congestion avoidance is correct?
- A. The random drop probability in weighted early drop is related to the upper and lower thresholds.
- B. When the number of packets exceeds the early drop threshold, packets are randomly dropped to avoid queue congestion without affecting services.
- C. Early drop indicates that packets are dropped before the number of packets reaches the preset threshold of packet numbers. This prevents queue congestion.
- D. Early drop and tail drop cannot coexist.
Answer: A
Explanation:
WRED (weighted early drop) uses lower and upper thresholds to determine a probabilistic drop curve; the drop probability scales with the average queue length between these thresholds-therefore D is correct.
A is incorrect because early dropping inevitably affects services to some extent; it's designed to trade small, controlled loss for stability.
B is incorrect; devices use early drop before buffers fill, and when full, tail drop still applies-both mechanisms coexist.
C is imprecise in Huawei's terminology; early drop begins when the average queue depth crosses the lower threshold and increases up to the upper threshold, not simply "before a preset threshold" without that two- threshold relationship.
Reference: HCIP-Access V2.5 - WRED thresholds and probability model; coexistence of early drop and tail drop.
NEW QUESTION # 81
Which of the following statements about multicast is incorrect?
- A. In the case of IGMP match mode disable, you need to configure a multicast channel.
- B. General parameters for multicast protocols (IGMP proxy and IGMP snooping) are configured globally at Layer 2 and apply to all multicast VLANs.
- C. The report sent by a user is captured by the board logic and sent to the CPU of the board.
- D. You can add IGMP users to a BTV. By default, a multicast user can watch 8 programs.
Answer: A
NEW QUESTION # 82
(Radio) A power access service deploys GPON Type C dual attribution protection, and the protection group is
fixed with the upstream Ethernet port status on the OLT, and when the Ethernet port status associated with the
protection group on the OLT becomes down, the following description is incorrect.
- A. The ONU detects link failures and triggers protection reversals
- B. The state of the onU side work port changes to standby
- C. After the inversion, the service on the ONU is sent to the OLT through the protect port, that is, the
service packet is transmitted on the protect example planting road - D. OLT laughs at onu uplink state changes
Answer: A
NEW QUESTION # 83
Which of the following statements about the implementation of VLAN Layer 2 intercommunication through ARP proxy and VLAN service-profile is correct?
- A. Both of them can implement Layer 2 isolation of smart VLANs.
- B. Compared with the VLAN service profile, ARP proxy saves IP addresses.
- C. The VLAN service profile must be configured on the ONU to implement voice communication.
- D. The ARP proxy must be configured on the OLT to solve the voice interworking problem.
Answer: A
NEW QUESTION # 84
(Radio) When using the siP protocol, you need to use a local number graph for matching, if you use the default
matching mode to match a 7-digit number beginning with 7727, then the following options are available?
The figure is
- A. Local-di gi tmap add huawei normal 7727
- B. Local-bitmap add huawei normal 7727xxx/7726.
- C. Local-digitmap add huawei normal 7727xxx/7727
- D. Local-digi tmap add huawei normal 772. /7727xxx
Answer: C
NEW QUESTION # 85
The maximum spectroscopic ratio supported by 10G EPON is?
- A. 1:64
- B. 1:128
- C. 1: 256 (Laboratory).
- D. 1:32
Answer: B,C
NEW QUESTION # 86
Sequence of upstream QoS processing on the OLT:
- A. Traffic classification > Marking > Traffic policing > Congestion avoidance > Congestion management
- B. Traffic classification > Marking > ACL policy > Congestion avoidance > Congestion management
- C. Traffic classification > Marking > Congestion avoidance > Traffic policing > Congestion management
- D. Marking > Traffic classification > Congestion avoidance > Traffic policing > Congestion management
Answer: A
Explanation:
On Huawei OLTs, the standard QoS pipeline for upstream packets is: first perform traffic classification (identify flows), then marking (set CoS/DSCP as required), next apply traffic policing (rate-limit and color traffic), followed by congestion avoidance (AQM such as RED/WRED), and finally congestion management (queue scheduling/priority queuing). This ordered sequence ensures correct identification and marking before any rate enforcement, and that packets encounter AQM prior to scheduler-based dequeue.
Reference: HCIP-Access V2.5 - QoS Framework and Processing Sequence on OLT (classification # marking
# policing # AQM # scheduling).
NEW QUESTION # 87
The (radio) device periodically sends and receives LMCP packets to avoid information loss, and if packets are not received during ( ) LACp packet interaction cycles, the system considers the port to be down
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 88
(Radio) The device periodically sends and receives LACP packets to avoid information loss. If no LACPDU is received within ( ) LACP interaction cycles, the system considers the member port Down.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
In IEEE 802.1AX/802.3ad LACP operation, timeout detection relies on a multiplier of three consecutive LACP intervals. In short-timeout mode, the default period is ~1 s; if 3 intervals pass without receiving LACPDUs, the peer is considered expired and the member is removed (treated as Down for aggregation).
Huawei implements this standard behavior for port-member validity in an Eth-Trunk.
(Reference: HCIP-Access V2.5 - Link Aggregation/LACP timers and member aging; IEEE LACP short- timeout 3× interval rule.)
NEW QUESTION # 89
Which of the following statements about congestion avoidance is incorrect?
- A. Tail drop causes global TCP synchronization and reduces bandwidth usage.
- B. Congestion avoidance is a traffic control mechanism that monitors the usage of network resources (such as queues or memory buffers) and discards packets when the system is congested to adjust the traffic and mitigate network overload.
- C. To prevent high-priority packets from being discarded, the early drop threshold of high-priority packets is set to a smaller value.
- D. The RED technology can reduce the jitter during packet transmission.
Answer: C
Explanation:
In AQM, high-priority queues are given more tolerant (larger) thresholds so they are less likely to be dropped early. Setting a smaller early-drop threshold for high priority would increase their loss probability, which contradicts QoS objectives-thus A is incorrect. Descriptions in B, C, and D align with Huawei's treatment of congestion avoidance: RED/WRED proactively drops to stabilize queues and can reduce delay variation; tail drop at full buffer can lead to global TCP synchronization.
Reference: HCIP-Access V2.5 - Congestion Avoidance (RED/WRED behavior, thresholds, and TCP effects of tail drop).
NEW QUESTION # 90
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Huawei H35-211_V2.5 exam is a comprehensive, 90-minute exam that consists of 60 multiple-choice questions. The topics covered in the exam are divided into four main categories: Network Access Technologies, Access Network Security, Access Network Planning and Design, and Access Network Maintenance and Troubleshooting. H35-211_V2.5 exam is designed to test the knowledge and skills of professionals in all areas of network access technology.
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