[Sep-2026 Newly Released] H12-821_V1.0 Dumps for HCIP-Datacom Certified [Q49-Q65] – IT Certification Exam Questions & Answers

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[Sep-2026 Newly Released] H12-821_V1.0 Dumps for HCIP-Datacom Certified

Updated Verified H12-821_V1.0 dumps Q&As – 100% Pass

Huawei H12-821_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Multicast	9%	– IGMP and PIM concepts
Network Service and Management	2%	– Network management basics
BGP	17%	– BGP policy and attributes – BGP path selection
Routing and Traffic Control	10%	– Traffic engineering basics – Policy-based routing
IPv6	3%	– IPv6 addressing and routing
IS-IS	8%	– IS-IS protocol fundamentals
Switching Technologies	7%	– VLAN and STP fundamentals
OSPF	16%	– OSPF core concepts – OSPF areas and LSDB
Network Solution	2%	– Integrated network design scenarios
Network Reliability	8%	– Redundancy and failover mechanisms
Network Security	9%	– ACL and basic security mechanisms
Routing Fundamentals	3%	– Network basics and routing principles
Large-scale WLAN Architecture	6%	– Enterprise WLAN deployment basics

NEW QUESTION 49
Which of the following descriptions about BGP route optimization is correct?

When BGP selects a route, if it cannot be optimized according to the conditions, it will automatically carry out load sharing

When there are multiple effective routes in BGP, BGP Speaker only advertises the optimal route to the peer

When BGP receives multiple routes to the same destination, it will select the optimal route according to the routing rules, and then deliver the optimal route to the IP routing table to guide data traffic forwarding

BGP compares the originality of routes strictly according to the sequence when selecting routes. If the optimal route can be selected through the previous attributes, the latter comparison cannot be judged.

NEW QUESTION 50
In a network environment, there are both switches running RSTP and switches running SIP, then the phenomenon that will appear in this network is: (Multiple choice)

If it is a Huawei switching device, RSTP will switch to STP mode. After the STP switching device is withdrawn from the network, the RSTP -running switching device can migrate back to the RSTP working mode

RSTP can interoperate with STP, but at this time RSTP advantages such as fast convergence are lost

RSTP and STP are not interoperable and will perform independent operations

If it is a Huawei switching device, the STP will switch to RSTP mode, and the switching device running RSTP can be configured to switch back to the RSTP working mode after the switching device is removed from the network.

NEW QUESTION 51
Which of the following descriptions about the Options field in the DHCP message are correct? (Multiple choice)

Option 82 can contain up to 256 Sub-Options

The Options field consists of three parts: Type, Length and Value

Option 82 does not contain the MAC address of the relay device

Option 82 is called the relay agent information option, which records the VLAN ID of the switch port connected to the DHCP client

NEW QUESTION 52
The IGMP protocol runs between an IP host and its directly connected multicast router to maintain multicast group membership.

TRUE

FALSE

NEW QUESTION 53
IS-IS overload flag refers to the OL field in the LSP message. After setting the overload flag on a device, other devices will not use this device for forwarding when calculating SPF, and will only calculate the direct route of the device.

TRUE

FALSE

NEW QUESTION 54
Which of the following OSPF areas can only reach other areas through the default route?

Backbone area

totally stub area

NSSA

Non-backbone area

NEW QUESTION 55
In BGP route selection rules, routes with high Local_Pref values take precedence.

TRUE

FALSE

NEW QUESTION 56
In the state detection firewall, when the state detection mechanism is enabled, when the second message (SHN+ACK) of the three-way handshake reaches the firewall, if there is no corresponding session table on the firewall, then which of the following statement is correct?

If the firewall security policy allows the packet to pass through, create a session table

By default, after the status function is turned off, and the allow policy is configured, it can pass

The message must pass through the firewall and establish a session table

If the firewall security policy allows the packet to pass through, the packet can pass through the firewall

NEW QUESTION 57
Regarding the description of the characteristics of the routing strategy, which is correct?

Apply the command policy-based-route

Forwarding according to the routing table based on the destination address

Manual hop-by-hop configuration is required to ensure that packets are forwarded according to policies

Based on the forwarding plane, serving the forwarding strategy

NEW QUESTION 58
RTA is the source DR router, and RIB is the RP router. The multicast source sends group blessing data to RTA, but the group blessing source Source registered with it through the PIM Register message cannot be seen on the RIB. The possible reasons are as follows: (Multiple choice)

There is no single-finger route from RTB to RTA, which causes RIB to fail the RPF check of the source

The multicast network dynamically elects RP, but RTA fails to check the RPF of BSR

The RP elected by RTA is not RTB

The multicast network is statically configured with RP, but the RTA router is not statically configured with RP

NEW QUESTION 59
The four routers R1, R2, R3 and R4 enable OSPF to establish neighbor relationships. The topology and related parameters are shown in the figure.

At this time, R2 is disconnected for some reason, so the Hello report transmitted between R1, R3 and R4 In the text, which of the following is the value of the BDR field?

12.12.12.2

12.12.12.3

12.12.12.1

0.0.0.0

2.2.2.2

1.1.1.1

NEW QUESTION 60
On a broadcast or NBMA network, not all neighbors will establish adjacency relationships.

TRUE

FALSE

NEW QUESTION 61
There is a wireless access controller serving as a DHCP relay. If the DHCP client cannot obtain an IP address dynamically, which of the following reasons may be the cause? (Multiple choice)

In the wireless access controller global view, the DHCP server function is not enabled.

In the wireless access controller interface view, the proxy DHCP server is not specified.

In the wireless access controller interface view, dhcp select relay is not configured.

In the global view of the wireless access controller, there is no DHCP server group bound.

NEW QUESTION 62
By default, VRP will automatically aggregate the routes introduced by BGP.

TRUE

FALSE

NEW QUESTION 63
A Layer 2 switch supports multiple types of Ethernet interfaces, and each interface has a default VLAN ID regardless of the interface type. On a Huawei switch, the default VLAN ID of an interface is 11.

TRUE

FALSE

NEW QUESTION 64
In BGP, MED is used as a metric value to indicate to external peers the preferred path into this AS. By default, the router compares the MED values of BGP routes from different ASs. The smaller the MED attribute value, the better the BGP route.

TRUE

FALSE

NEW QUESTION 65
Which of the following descriptions about IGMPv3 is wrong?

You can specify not only the multicast group but also the multicast source

The same response and query mechanism as the IGMPv1 version

Allow the host to specify to receive certain multicast traffic sent by certain multicast sources

Serving the SSM model

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