최신Huawei HCIE-Datacom V1.0 - H12-891_V1.0무료샘플문제
문제1
In the LDP session establishment process, the initiator sends an Initialization message for parameter negotiation. Which message will be sent by the responder if it does not accept negotiation parameters?
In the LDP session establishment process, the initiator sends an Initialization message for parameter negotiation. Which message will be sent by the responder if it does not accept negotiation parameters?
정답: C
설명: (ExamPassdump 회원만 볼 수 있음)
문제2
On a router, SRv6 is enabled, and the configurations shown below are performed. Which of the following statements about the configurations are correct?
[Router-segment-routing-ipv6] locator srv6_locator1 ipv6-prefix 2001:DB8:ABCD::/64 static 32
On a router, SRv6 is enabled, and the configurations shown below are performed. Which of the following statements about the configurations are correct?
[Router-segment-routing-ipv6] locator srv6_locator1 ipv6-prefix 2001:DB8:ABCD::/64 static 32
정답: A,B,D
설명: (ExamPassdump 회원만 볼 수 있음)
문제3
VLAN-based MAC address flapping detection is configured. If MAC address flapping occurs, actions to be taken on an interface can be configured as required. Which of the following actions cannot be configured?
VLAN-based MAC address flapping detection is configured. If MAC address flapping occurs, actions to be taken on an interface can be configured as required. Which of the following actions cannot be configured?
정답: C
설명: (ExamPassdump 회원만 볼 수 있음)
문제4
Fill in Blank
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.)
Fill in Blank
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.)
정답:
Understanding EVPN (Ethernet VPN) Label Allocation and ARP Handling
Explanation:
Understanding EVPN (Ethernet VPN) Label Allocation and ARP Handling
🔹 What Happens in This Scenario?
1️⃣ CE1 (192.168.1.1) sends an ARP request to discover the MAC address of CE2 (192.168.1.2).
2️⃣ PE1 receives the ARP request and needs to forward it over the EVPN fabric.
3️⃣ To send the broadcast ARP request across the EVPN network, PE1 forwards the packet to PE4 using BUM (Broadcast, Unknown unicast, and Multicast) forwarding.
4️⃣ 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 for MAC-to-IP address mapping announcements.
Ensures remote VTEPs (PE routers) learn MAC-to-IP bindings dynamically.
✅ EVPN Type 3 Route (Inclusive Multicast Route):
Used for BUM 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:
The label 201 is used for BUM 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: Uses EVPN Type 3 routes to control BUM traffic efficiently.
Campus Networks: Prevents unnecessary flooding of ARP requests across VXLAN domains.
✅ Reference: Huawei HCIE-Datacom Guide - EVPN BGP Route Types and Multicast Labeling
Explanation:
Understanding EVPN (Ethernet VPN) Label Allocation and ARP Handling
🔹 What Happens in This Scenario?
1️⃣ CE1 (192.168.1.1) sends an ARP request to discover the MAC address of CE2 (192.168.1.2).
2️⃣ PE1 receives the ARP request and needs to forward it over the EVPN fabric.
3️⃣ To send the broadcast ARP request across the EVPN network, PE1 forwards the packet to PE4 using BUM (Broadcast, Unknown unicast, and Multicast) forwarding.
4️⃣ 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 for MAC-to-IP address mapping announcements.
Ensures remote VTEPs (PE routers) learn MAC-to-IP bindings dynamically.
✅ EVPN Type 3 Route (Inclusive Multicast Route):
Used for BUM 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:
The label 201 is used for BUM 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: Uses EVPN Type 3 routes to control BUM traffic efficiently.
Campus Networks: Prevents unnecessary flooding of ARP requests across VXLAN domains.
✅ Reference: Huawei HCIE-Datacom Guide - EVPN BGP Route Types and Multicast Labeling
문제5
Fill in Blank
The ________ command can be run to completely isolate Layer 2 and Layer 3 of different interfaces in a VLAN. (Use lowercase letters to supplement the command, which cannot be abbreviated.)
Fill in Blank
The ________ command can be run to completely isolate Layer 2 and Layer 3 of different interfaces in a VLAN. (Use lowercase letters to supplement the command, which cannot be abbreviated.)
정답:
portisolateenable
Explanation:
The command port-isolate enable is used on Huawei switches to completely isolate traffic at both Layer 2 and Layer 3 between different interfaces within the same VLAN. This isolation prevents any communication between isolated ports-even if they belong to the same subnet or VLAN-making it a critical security feature in multi-tenant environments.
Usage Context:
Often used in shared service or hotel network scenarios.
Can be applied in access port configurations.
Does not require additional VLAN creation or private VLAN features.
Huawei Datacom Reference:
"To completely isolate Layer 2 and Layer 3 communication between interfaces in the same VLAN, run the port-isolate enable command under the interface view." (Source: HCIE-Datacom Study Guide V3.0 - Chapter: VLAN & Security Technologies, Section: Port Isolation)
Explanation:
The command port-isolate enable is used on Huawei switches to completely isolate traffic at both Layer 2 and Layer 3 between different interfaces within the same VLAN. This isolation prevents any communication between isolated ports-even if they belong to the same subnet or VLAN-making it a critical security feature in multi-tenant environments.
Usage Context:
Often used in shared service or hotel network scenarios.
Can be applied in access port configurations.
Does not require additional VLAN creation or private VLAN features.
Huawei Datacom Reference:
"To completely isolate Layer 2 and Layer 3 communication between interfaces in the same VLAN, run the port-isolate enable command under the interface view." (Source: HCIE-Datacom Study Guide V3.0 - Chapter: VLAN & Security Technologies, Section: Port Isolation)
문제6
Huawei CloudCampus Solution has multiple application scenarios, and iMaster NCE-Campus provides different APIs for each application scenario. Match the following application scenarios with the open APIs provided by iMaster NCE-Campus.
Huawei CloudCampus Solution has multiple application scenarios, and iMaster NCE-Campus provides different APIs for each application scenario. Match the following application scenarios with the open APIs provided by iMaster NCE-Campus.
정답:
문제7
When Huawei iMaster NCE-IP is used to configure SR-MPLS TE tunnels, which of the following protocols is used by the controller to collect device running status information?
When Huawei iMaster NCE-IP is used to configure SR-MPLS TE tunnels, which of the following protocols is used by the controller to collect device running status information?
정답: C
설명: (ExamPassdump 회원만 볼 수 있음)
문제8
Portal authentication is recommended for scenarios with high mobility and numerous terminal types, such as shopping malls and supermarkets. MAC address authentication is recommended for dumb terminals that do not support Portal authentication, such as printers, fax machines, and IP phones.
Portal authentication is recommended for scenarios with high mobility and numerous terminal types, such as shopping malls and supermarkets. MAC address authentication is recommended for dumb terminals that do not support Portal authentication, such as printers, fax machines, and IP phones.
정답: A
설명: (ExamPassdump 회원만 볼 수 있음)
문제9
An engineer uses two routers to perform IPv6 tests and wants to use OSPFv3 for IPv6 network connectivity. Which of the following OSPFv3 configurations for R1 are correct?
An engineer uses two routers to perform IPv6 tests and wants to use OSPFv3 for IPv6 network connectivity. Which of the following OSPFv3 configurations for R1 are correct?
정답: A,B
설명: (ExamPassdump 회원만 볼 수 있음)
문제10
In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attribute of an Update packet?
In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attribute of an Update packet?
정답: C
설명: (ExamPassdump 회원만 볼 수 있음)
문제11
Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. Drag the HTTP methods to their corresponding functions.
Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. Drag the HTTP methods to their corresponding functions.
정답:
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문제12
In the following figure, OSPF is enabled on all router interfaces. The IP addresses marked in the figure belong to Loopback0 of the routers.
The Loopback0 addresses of R1 and R2 are advertised in Area 1, the Loopback0 address of R4 is advertised in Area 0, and the Loopback0 addresses of R3 and R5 are advertised in Area 2. Given this, which of the following IP addresses can ping each other?
In the following figure, OSPF is enabled on all router interfaces. The IP addresses marked in the figure belong to Loopback0 of the routers.
The Loopback0 addresses of R1 and R2 are advertised in Area 1, the Loopback0 address of R4 is advertised in Area 0, and the Loopback0 addresses of R3 and R5 are advertised in Area 2. Given this, which of the following IP addresses can ping each other?
정답: B
설명: (ExamPassdump 회원만 볼 수 있음)
문제13
Which of the following number sequences can be matched by the regular expression 100.$?
Which of the following number sequences can be matched by the regular expression 100.$?
정답: A,B
설명: (ExamPassdump 회원만 볼 수 있음)
문제14
IPsec uses an asymmetric encryption algorithm to encrypt the symmetric algorithm key, which it uses to encrypt/decrypt data, ensuring security and performance.
IPsec uses an asymmetric encryption algorithm to encrypt the symmetric algorithm key, which it uses to encrypt/decrypt data, ensuring security and performance.
정답: A
설명: (ExamPassdump 회원만 볼 수 있음)