The Huawei H12-811_V2.0 HCIA-Datacom V2.0 Exam is an entry-level certification designed for IT professionals who want to build strong fundamentals in networking and datacom technologies. This certification validates your ability to understand, configure, and troubleshoot enterprise networks using Huawei solutions.
Earning the HCIA-Datacom V2.0 certification helps candidates start a career in networking, system administration, and IT infrastructure.
Topics Covered in H12-811_V2.0 Exam
The exam focuses on fundamental networking concepts and Huawei datacom technologies:
Network Fundamentals
OSI & TCP/IP models
IP addressing & subnetting
Basic network architecture
Switching Technologies
VLAN, trunking
MAC address learning
STP (Spanning Tree Protocol)
Routing Technologies
Static routing
Dynamic routing basics (OSPF)
Routing table concepts
Network Security Basics
ACLs (Access Control Lists)
Basic firewall concepts
WLAN Fundamentals
Wireless networking basics
AP configuration
Network Services & Management
DHCP, DNS basics
Network troubleshooting
Huawei device management
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QUESTION 1
The undo command can be used in the CLI of a Huawei device to restore default settings, disable
functions, or delete configurations. Which of the following are correct undo commands? (Select all
that apply)
A.
<HUAWEI> system-view
[HUAWEI] undo system-view
<HUAWEI>
B.
[HUAWEI] interface GE 1/0
[HUAWEI-GE1/0] ip address 10.12.1.1 24
[HUAWEI-GE1/0] undo ip address
C.
[HUAWEI] interface GE 1/0
[HUAWEI-GE1/0] undo portswitch
[HUAWEI-GE1/0]
D.
[HUAWEI] sysname TEST
[TEST] undo sysname
[HUAWEI]
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B, C, D
Explanation:
On Huawei devices, the undo command is used to remove a previously applied configuration, disable
a function, or restore a parameter to its default state. In option B, undo ip address is a valid interfaceview
command that removes the IP address configured on the interface. In option C, undo portswitch
is also a valid interface command on switch interfaces that converts a Layer 2 interface into a Layer 3
interface when supported by the device. In option D, undo sysname restores the device name to the
default hostname, which is valid in system view.
Option A is incorrect because system-view is a command used to enter system view from user view,
but undo system-view is not a valid command for exiting that view. Exiting system view is done with
commands such as quit, return, or by using shortcut keys. This question checks the understanding
that undo only applies to configurable features and parameters, not to view-switching commands in the CLI hierarchy.
QUESTION 2
In the figure, a web client sends an HTTP request to a web server, and the router in between
performs operations on the HTTP request. Which of the following statements are false about the
routers operations? (Select all that apply)
A. The router encapsulates a new destination IP address before sending the data.
B. The router removes the data frame header and checks the destination IP address.
C. The router searches the IP routing table based on the port number in the transport layer header.
D. The router checks the content of the application-layer data and determines the port from which to send the data.
Answer: A, C, D
Explanation:
A router works mainly at the network layer. When it receives a frame, it removes the Layer 2 header
and trailer, examines the destination IP address in the Layer 3 header, consults the routing table,
selects the outgoing interface, and then re-encapsulates the packet into a new Layer 2 frame for the
next hop. Therefore, statement B is true and is not part of the answer.
Statement A is false because the router does not create a new destination IP address during normal
forwarding. The source and destination IP addresses remain unchanged end to end unless special
functions such as NAT are used. Statement C is false because routing-table lookup is based on the
destination IP address, not on TCP or UDP port numbers. Statement D is also false because normal IP
routing does not inspect application-layer content to determine the outgoing interface. That decision
is made from the network-layer destination address and the routing table. This question tests the
layered forwarding logic of routers in TCP/IP networks.
QUESTION 3
You can enter a question mark (?) in the CLI of a Huawei switch to obtain online help. Which of the
following statements is true about the meaning of <cr> in the output of the command sysname SW1? [HUAWEI] sysname SW1? <cr>
A. There are too many parameters in that position.
B. There is no keyword or parameter in that position.
C. The entered keywords are incorrect.
D. The command is incomplete.
Answer: B
Explanation:
In the Huawei command-line interface, the question mark ? provides real-time command help based
on the current input. When the output shows <cr>, it means that the command can end at that point
by pressing Enter. In other words, there is no additional keyword or parameter required in that
position. Therefore, option B is correct.
In the example sysname SW1?, the device interprets SW1 as a complete and valid hostname
parameter for the sysname command. Since nothing else is required after the hostname, the CLI
displays <cr> to indicate command completion is allowed. This behavior is common in Huawei
devices and is important for daily operation and troubleshooting because it helps engineers
understand whether a command is complete, whether more arguments are needed, or whether
optional parameters are available. Options about incorrect keywords or incomplete commands do
not apply here, because the entered command syntax is already valid. Understanding <cr> is a basic
but important CLI skill in HCIA-Datacom operations.
QUESTION 4
The essence of communication is the transmission and exchange of information between two or more points.
The three elements of communication are the sender, content, and transmission channel of the information.
The receiver of the information is not included among these elements.
A. TRUE
B. FALSE
Answer: B
Explanation:
This statement is false because the receiver is one of the fundamental elements of communication.
In basic communication theory, a complete communication process requires at least four essential
elements: the sender, the information or message content, the transmission medium or channel, and
the receiver. If the receiver is missing, communication cannot be completed because there is no
endpoint to accept, interpret, or respond to the transmitted information.
In datacom networks, this concept maps directly to real networking scenarios. A source host
generates data, the data is carried over some medium such as copper, fiber, or wireless, and a
destination host receives the data. Network devices such as switches and routers assist the
forwarding process, but the fundamental communication model still includes both communicating
endpoints. HCIA-Datacom emphasizes the complete sender-to-receiver process when introducing
network communication basics, protocol encapsulation, and forwarding. Therefore, excluding the
receiver from the communication elements is conceptually incorrect. The correct understanding is
that sender, receiver, information content, and channel together form the essential basis of communication.
QUESTION 5
In TCP/IP-based end-to-end communication, only the source and destination hosts process the
header information added at the transport layer. Routers along the path will definitely not process this information.
A. TRUE
B. FALSE
Answer: A
Explanation:
In the standard TCP/IP forwarding model, transport-layer headers such as TCP and UDP headers are
added by the source host and are mainly interpreted by the destination host. Routers that forward
packets between the source and destination operate primarily at the network layer, using the
destination IP address in the IP header to make forwarding decisions. Therefore, under normal
routing behavior, routers do not process transport-layer header information when deciding how to
forward packets.
This is a key concept in layered communication. The source host encapsulates application data with a
transport-layer header, then with an IP header, and finally with a data-link header. Each router along
the path removes only the Layer 2 frame header, checks the Layer 3 destination IP information,
decrements TTL, recalculates the IP header checksum when required, and forwards the packet. The
transport-layer content remains unchanged in normal forwarding. HCIA-Datacom uses this principle
to explain end-to-end communication and layer responsibilities. Although advanced devices may
inspect higher-layer information for security or policy purposes, standard router forwarding in the
basic TCP/IP model does not depend on transport-layer processing.
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Top 10 FAQs
1. What is H12-811_V2.0 exam?
It is a Huawei certification for networking fundamentals.
2. Who should take this exam?
Beginners and entry-level network engineers.
3. How to prepare quickly?
Use dumps, practice tests, and AI tools.
4. Are Certkingdom dumps reliable?
Yes, they are updated and verified.
5. What is exam duration?
Typically around 90 minutes.
6. What is passing score?
Usually around 600/1000 (may vary).
7. Is prior experience required?
No, beginners can attempt it.
8. Are practice tests necessary?
Yes, they improve confidence.
9. How many questions are there?
Around 50–60 questions.
10. Can I pass in first attempt?
Yes, with proper preparation and dumps.
