Pass Huawei H12-811_V1.0 Exam With Practice Test Questions Dumps Bundle
2026 Valid H12-811_V1.0 test answers & Huawei Exam PDF
Huawei H12-811_V1.0 (HCIA-Datacom V1.0) Certification Exam is a comprehensive exam that tests the candidate's theoretical knowledge and practical skills in the field of data communication. H12-811_V1.0 exam consists of multiple-choice questions and practical exercises that assess the candidate's ability to troubleshoot and solve problems related to data communication. HCIA-Datacom V1.0 certification exam is recognized globally and is an essential certification for those who are seeking to work as network engineers, network administrators, or network technicians. The Huawei H12-811_V1.0 (HCIA-Datacom V1.0) Certification Exam is a great way to enhance your career prospects and validate your skills and knowledge in the field of data communication.
Huawei H12-811_V1.0 (HCIA-Datacom V1.0) certification exam is a comprehensive exam that tests the knowledge and skills of IT professionals in data communication technologies. H12-811_V1.0 exam is designed to evaluate the candidate’s ability to design, deploy, and manage data communication networks. HCIA-Datacom V1.0 certification is recognized globally and provides professionals with the skills and knowledge necessary for a successful career in the field of data communication.
Huawei H12-811_V1.0: HCIA-Datacom V1.0 exam is an ideal certification program for IT professionals who wish to enhance their skills and knowledge in the field of data communication technologies. H12-811_V1.0 exam covers a range of topics and ensures that candidates have the necessary skills to work in an IT networking environment. HCIA-Datacom V1.0 certification is globally recognized and attests to the proficiency of candidates in data communication technologies.
NEW QUESTION # 74
What is the total length of the port ID in STP?
- A. 16 bits
- B. 8 bits
- C. 4 bits
- D. 2 bits
Answer: A
Explanation:
* In Spanning Tree Protocol (STP), the Port ID consists of:
* 8-bit Port Priority
* 8-bit Port Number
* This results in a total length of 16 bits.
* B, C, and D are incorrect since they do not represent the full length of the Port ID.
Thus, the correct answer is A (16 bits).
Reference: HCIA-Datacom Study Guide, STP Concepts Section.
NEW QUESTION # 75
The following protocols are China's link state routing protocol
- A. Static
- B. Direct
- C. OSPF
Answer: B
NEW QUESTION # 76
When the Access type port sends a message, it will ().
- A. Add the VLAN information of the message, and then send it out
- B. Type the PVID. information of this port, and then send it out
- C. Send tagged messages
- D. Strip the VLAN information of the message, and then send it out
Answer: D
NEW QUESTION # 77
As shown in the figure, which of the following ports will be in blocking state?
- A. G0/0/3 of SWB
- B. G0/0/3 of SWA
- C. G0/0/2 of SWC
- D. G0/0/1 of SWC
Answer: A
Explanation:
Detailed Explanation:In a Spanning Tree Protocol (STP) environment, the root bridge is selected based on the bridge ID. Here, SWA has the lowest bridge ID (4096:0001-0203-04AA), making it the root bridge. For each network segment, STP elects one designated port to forward traffic, and all other ports in that segment will be blocked to prevent loops.
Following the STP rules:
* SWA is the root bridge, so all of its ports (G0/0/2 and G0/0/3) will be designated ports.
* Each non-root switch (SWB and SWC) selects one root port, which is the port with the lowest path cost to the root bridge (SWA).
* SWB's G0/0/3 will have a higher path cost when compared with G0/0/1 (if assuming equal link costs), thus making G0/0/1 the root port on SWB.
* SWB will then block its G0/0/3 port to prevent a loop, as SWA's G0/0/3 is already the designated port for that link.
Hence, G0/0/3 of SWB will be in the blocking state to maintain a loop-free topology
NEW QUESTION # 78
Which of the following authentication modes does/do not require a user name and a password?
- A. authentication-mode none
- B. authorization-mode hwtacacs
- C. authentication-mode local
- D. authentication-mode hwtacacs
Answer: A
Explanation:
Huawei devices support different authentication modes:
* authentication-mode local: Requires a username and password stored locally.
* authentication-mode hwtacacs: Uses Huawei TACACS+ authentication, which requires a username and password.
* authorization-mode hwtacacs: Refers to authorization (not authentication).
* authentication-mode none: Does not require a username or password, meaning no authentication is needed.
Thus, the correct answer is D.
Reference:Huawei HCIA-Datacom Official Documentation - User Authentication Configuration
NEW QUESTION # 79
If the largest number in an ACL rule is 12, by default, the user does not specify a number when configuring a new rule, then the number assigned to the new rule by the system is? ()
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 80
The switch GE0/0/1 port configuration information is shown in the figure. Which VLAN data frame does the switch not carry when forwarding?()
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 81
In the figure, bridge IDs of SWA, SWB, SWC, and SWD have been marked. After the stp root secondary command is run on SWD, which switch will be selected as the root bridge?
- A. SWD
- B. SWA
- C. SWC
- D. SWB
Answer: B
Explanation:
Comprehensive and Detailed Explanation:
* In Spanning Tree Protocol (STP), the root bridge is selected based on:
* Lowest priority (default = 32768, lower value preferred).
* Lowest MAC address (if priorities are equal).
* The given bridge priorities:
* SWA: 4096 (Lowest priority # Automatically the root bridge).
* SWB, SWC, SWD: 32768 (Default priority).
* The stp root secondary command makes SWD the backup root (if SWA fails).
# Reference: HCIA-Datacom Switching Guide - STP Root Bridge Selection
To determine which switch will be selected as the root bridge after running the stp root secondary command on SWD, we need to analyze the Spanning Tree Protocol (STP) election process, as defined in IEEE 802.1D and aligned with HCIA Datacom documentation. Let's break it down step by step:
* Understanding STP and Root Bridge Election:
* STP is used to prevent loops in Ethernet networks by electing a root bridge and creating a loop- free topology. The root bridge is the central point of the spanning tree, and all other switches calculate the shortest path to it based on path cost.
* The root bridge is selected based on the Bridge ID (BID), which consists of two components:
* Bridge Priority: A 16-bit value (default is 32768 for most switches, but it can be configured). Lower priority values are preferred.
* MAC Address: If bridge priorities are equal, the switch with the lowest MAC address (the last part of the Bridge ID) becomes the root bridge.
* The Bridge ID is typically written as Priority:MAC-Address. For example, a Bridge ID of 4096:
0001-0203-04AA indicates a priority of 4096 and a MAC address of 0001-0203-04AA.
* Analyzing the Given Bridge IDs:From the diagram, the Bridge IDs of the switches are:
* SWA: Bridge ID = 4096:0001-0203-04AA (Priority = 4096, MAC = 0001-0203-04AA)
* SWB: Bridge ID = 32768:0001-0203-04BB (Priority = 32768, MAC = 0001-0203-04BB)
* SWC: Bridge ID = 32768:0001-0203-04CC (Priority = 32768, MAC = 0001-0203-04CC)
* SWD: Bridge ID = 32768:0001-0203-04DD (Priority = 32768, MAC = 0001-0203-04DD)
* Initially, the switch with the lowest Bridge ID (lowest priority, or lowest MAC if priorities are tied) is elected as the root bridge.
* Comparing the priorities:
* SWA has a priority of 4096, which is lower than the default priority of 32768 for SWB, SWC, and SWD.
* Therefore, SWA is currently the root bridge because it has the lowest priority (4096) compared to the others (32768).
* If priorities are equal, the MAC address is used as a tiebreaker, but here, SWA's lower priority makes it the root bridge without needing to compare MAC addresses.
* Effect of the stp root secondary Command on SWD:
* The stp root secondary command (commonly used in Huawei switches, as per HCIA Datacom) is a configuration command that sets a switch as the secondary root bridge. This means the switch's priority is automatically adjusted to a value lower than the default (32768) but higher than the primary root bridge's priority, ensuring it becomes the root bridge if the primary root fails.
* Specifically, in Huawei switches, running stp root secondary on SWD typically sets its priority to
28672 (which is lower than 32768 but higher than 4096, ensuring it does not override SWA unless SWA fails).
* However, the question asks which switch will be selected as the root bridge after running this command on SWD, implying we need to determine the current root bridge and whether this command changes it immediately.
* Importantly, the stp root secondary command does not immediately make SWD the root bridge if a switch with a lower priority (like SWA with 4096) already exists in the network. It only prepares SWD to become the root if the current root (SWA) fails or is removed.
* Therefore, running stp root secondary on SWD adjusts its priority to 28672, but SWA remains the root bridge because its priority (4096) is still lower than SWD's new priority (28672).
* Determining the Root Bridge After the Command:
* After running stp root secondary on SWD, its Bridge ID becomes 28672:0001-0203-04DD (Priority = 28672, MAC = 0001-0203-04DD).
* We compare the Bridge IDs of all switches:
* SWA: 4096:0001-0203-04AA (Priority = 4096)
* SWB: 32768:0001-0203-04BB (Priority = 32768)
* SWC: 32768:0001-0203-04CC (Priority = 32768)
* SWD: 28672:0001-0203-04DD (Priority = 28672)
* The switch with the lowest priority (and lowest MAC address if priorities are tied) is the root bridge.
* SWA's priority (4096) is the lowest, followed by SWD's new priority (28672), and then SWB and SWC (32768).
* Therefore, SWA remains the root bridge because its priority (4096) is lower than SWD's new priority (28672) and all others.
* Conclusion:
* Initially, SWA is the root bridge due to its lowest priority (4096).
* Running stp root secondary on SWD changes its priority to 28672, making it the secondary root (backup root) if SWA fails, but it does not immediately make SWD the root bridge.
* Thus, SWA continues to be the root bridge after the command is run on SWD.) References from HCIA Datacom Documents:
* HCIA Datacom V3.0, Chapter 6: Spanning Tree Protocol - Root Bridge Election and Configuration Commands
* Huawei STP Configuration Guide (HCIA Datacom Certification Material) - stp root primary and stp root secondary Commands
* IEEE 802.1D Standard - Bridge ID and Root Bridge Selection Process
NEW QUESTION # 82
The switch G0/0/1 port configuration information is shown in the figure. Which VLAN data frame does the switch forward without VLANTAG? ? () (Single-choice question)
- A. D. 40
- B. B. 30
- C. C. 20
Answer: B
NEW QUESTION # 83
UDP is connectionless and must rely on () to ensure the reliability of transmission.
- A. Transmission Control Protocol
- B. Application layer protocol
- C. Internet Protocol
- D. Network layer protocol
Answer: D
NEW QUESTION # 84
The CAPWAP protocol specifies the communication standard between AC and AP. Which of the following statements about the CAPWAP protocol is correct?
- A. In order to reduce the burden on A, CAPWAP uses a tunnel to transmit control messages and data messages at the same time
- B. AP can encapsulate the user's data message in CAPWAPI and forward it to AC
- C. In order to establish a CAPWAP tunnel, FIT AP can only discover AC through broadcast messages
- D. CAPWAP is an application layer protocol based on TCP transmission
Answer: B
NEW QUESTION # 85
As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
Detailed Explanation: If host A already has host B's MAC address in its ARP cache, it can send packets directly to host B without needing to perform an ARP request. This cached information allows immediate packet delivery, assuming no network changes have occurred that would invalidate the ARP entry.
NEW QUESTION # 86
Which of the following statements about wireless devices is true?
- A. An AC is usually deployed at the aggregation layer of a network to provide high-speed, secure, and reliable WLAN services.
- B. Typically, Fat APs collaborate with ACs.
- C. Fit APs can independently provide user access, authentication, and service forwarding functions.
- D. Wireless devices do not provide wired interfaces.
Answer: A
Explanation:
Wireless networks commonly use Access Controllers (ACs) and Access Points (APs) to manage user connectivity.
* Option A (Incorrect): Fat APs operate independently and do not require an AC to function. Instead, Fit APs require ACs to manage them centrally.
* Option B (Correct): An AC (Access Controller) is usually deployed at the aggregation layer of a network. It provides centralized control over Fit APs, ensuring high-speed, secure, and reliable WLAN services. This is the standard design in enterprise WLAN architectures.
* Option C (Incorrect): Fit APs do not handle authentication and forwarding on their own. Instead, they rely on an AC for these functions.
* Option D (Incorrect): Many wireless devices (including APs and ACs) have wired interfaces for uplink connectivity to switches or other network devices.
Thus, the correct answer is B. An AC is usually deployed at the aggregation layer of a network to provide high-speed, secure, and reliable WLAN services.
Reference:Huawei HCIA-Datacom Official Documentation - WLAN Architecture and AP Deployment
NEW QUESTION # 87
Which of the following statements about Prefix Segment is wrong? ()
- A. Prefix Segment is used to identify a destination address prefix in the network (Prefix)
- B. Prefix Segment spreads to other network elements through the IGP protocol, which is globally visible and effective
- C. Prefix Segment can be automatically allocated by IGP
- D. Prefix Segment needs to be configured manually
Answer: C
NEW QUESTION # 88
The protocol uses the P/A. mechanism to speed up the upstream port's transition to the Forwarding state, but what is the reason for no temporary loop? ()
- A. Ensure that there will be no temporary loops through the synchronization mechanism
- B. Reduced the time of ForwarD.Delay
- C. Edge port
- D. Speed up port role election
Answer: A
NEW QUESTION # 89
The basic header length of IPv6 packets is a fixed value ()
- A. False
- B. True
Answer: B
NEW QUESTION # 90
On Huawei VRP platform, which of the following can be used to invoke the history command saved by the command line interface?
- A. Upper cursor key
- B. Left cursor key
- C. Ctrl+P
- D. Ctrl+U
Answer: A
Explanation:
On Huawei VRP (Versatile Routing Platform), the command history feature allows administrators to recall previously executed commands. The Upper cursor key (# arrow key) can be used to navigate through the command history and re-execute previously entered commands.
* Ctrl+P is not a valid shortcut for recalling command history.
* Ctrl+U is typically used to delete an entire line of input in command-line interfaces, not to recall history.
* Left cursor key (#) is used for moving the cursor within a command line but does not invoke command history.
Thus, the correct answer is B. Upper cursor key (# arrow key).
NEW QUESTION # 91
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