H12-891_V1.0 Demo Test, H12-891_V1.0 Exam Braindumps
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Huawei HCIE-Datacom V1.0 Sample Questions (Q221-Q226):
NEW QUESTION # 221
During the migration test, which of the following indicates that the test is completed?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
During a network migration test, it is crucial not only to verify that the network itself is functioning correctly but also to ensure thatupper-layer application servicesare running properlyon the newly migrated network.
Migration testing aims to confirm that the transition has not disrupted service functionality.
Option A and C focus solely on network performance, which is necessary but insufficient.
Option B refers to command outputs, which are technical checks and do not guarantee service continuity.
Option D correctly identifies that successful migration is indicated byproper operation of upper-layer application services, as the primary purpose of a network is to support these applications.
NEW QUESTION # 222
In an IPv6 network, two nodes A and B are neighbors to each other if Node A sends NS messages to Node B if node B is B After receiving the message, reply to the NA message, then view it on node A, what will the neighbor status be marked? (Single Choice Questions).
Answer: D
NEW QUESTION # 223
As shown in the figure, when PE1 receives an ARP request packet, it forwards the packet to PE4. The packet then carries two labels. The label value 201 is carried by the EVPN Type ____ route. (Enter only digits.)
Answer:
Explanation:
3
Explanation:
Understanding EVPN (Ethernet VPN) Label Allocation and ARP Handling
#What Happens in This Scenario?
1##CE1 (192.168.1.1) sends an ARP request to discover the MAC address of CE2 (192.168.1.2).
2##PE1 receives the ARP request and needs to forward it over the EVPN fabric.
3##To send the broadcast ARP request across the EVPN network, PE1 forwards the packet to PE4 using BUM (Broadcast, Unknown unicast, and Multicast) forwarding.
4##PE4, as the Designated Forwarder (DF), forwards the ARP request to CE2.
Role of Labels in EVPN VXLAN/MPLS Networks
#EVPN uses BGP to distribute MAC/IP reachability information using different route types.
#EVPN Type 2 Route (MAC/IP Advertisement Route):
Used forMAC-to-IP address mappingannouncements.
Ensuresremote VTEPs (PE routers) learn MAC-to-IP bindingsdynamically.
#EVPN Type 3 Route (Inclusive Multicast Route):
Used forBUM traffic (Broadcast, Unknown Unicast, Multicast).
Assigns a multicast label (e.g., 201) to be used for forwarding broadcast packets like ARP requests.
#In this case:
Thelabel 201is used forBUM traffic forwarding.
BUM traffic is handled using an EVPN Type 3 route.
Why is the Answer 3?
#EVPN Type 3 routes carry labels for BUM traffic, which includes ARP requests.
#Label 201 is used for multicast distribution, which is managed by Type 3 routes.
Real-World Application:
VXLAN Data Centers:UsesEVPN Type 3 routes to control BUM traffic efficiently.
Campus Networks:Preventsunnecessary flooding of ARP requests across VXLAN domains.
#Reference:Huawei HCIE-Datacom Guide - EVPN BGP Route Types and Multicast Labeling
NEW QUESTION # 224
View the IGMP configuration of the interface on the router RTA as follows, and the information about the operation of the RTA is incorrect
Answer: C
NEW QUESTION # 225
MACsec can provide secure services during MAC-layer data transmitting and receiving. Which of the following services isnotprovided by MACsec?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
MACsec (Media Access Control Security)is a security protocol that provides securecommunication over Ethernet links. It operates at the MAC layer (Layer 2) and offers the following key security services:
Integrity Check (B):Ensures that data has not been tampered with during transmission.
User Data Encryption (C):Protects data confidentiality by encrypting the payload.
Data Source Authenticity Verification (D):Confirms that the data originates from a legitimate source by using security associations.
Controllability Check (A)is not a service provided by MACsec. The term "controllability" typically relates to network management and configuration control rather than data security. MACsec primarily focuses on protecting data integrity, confidentiality, and authenticity, rather than controlling network elements or configurations.
NEW QUESTION # 226
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