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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: MPLS Technologies | 19% | - LDP and RSVP-TE protocols - MPLS VPN (L3VPN, L2VPN) - MPLS fundamentals and label distribution - MPLS OAM and protection |
| Topic 2: Network Troubleshooting | 10% | - Routing protocol fault diagnosis - Performance and service fault resolution - Switching and link fault handling - Structured troubleshooting methodology |
| Topic 3: Advanced Ethernet Technologies | 10% | - QinQ and VLAN mapping - Ethernet link aggregation and reliability - Port isolation and security features - VLAN aggregation and MUX VLAN |
| Topic 4: Advanced IGP Features | 17% | - IS-IS advanced features
|
| Topic 5: Advanced BGP Features | 10% | - Route reflectors and confederations - BGP multi-homing and load balancing - BGP route selection and attributes - Routing policies and filtering |
| Topic 6: IPv6 Routing | 20% | - Transition mechanisms (dual-stack, tunnel, translation) - BGP4+ for IPv6 - IPv6 address planning and configuration - OSPFv3 and IS-IS for IPv6 |
| Topic 7: Network Cutover | 7% | - Cutover planning and risk assessment - Implementation and rollback strategy - Pre-cutover verification - Post-cutover validation |
| Topic 8: Network O&M | 7% | - Routine maintenance procedures - Configuration management and backup - Log and alarm management - Network monitoring and performance analysis |
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NEW QUESTION # 84
On the network shown in the figure, the DHCP server function is enabled on GEO/0/0 of R2, and the address pool is an interface address pool. When GEO/0/0 and GEO/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.
Answer: A
NEW QUESTION # 85
by executing___________The command can completely isolate the second and third layer users of different ports on the same LAN and cannot communicate. (Please use English and lowercase letters to complete the command, and the command cannot be abbreviated)
Answer:
Explanation:
portisolateenable
NEW QUESTION # 86
On the OSPFv3 network shown in the figure:
* Area 1 is a stub area, Area 2 is a common area, and Area 3 is an NSSA (Not-So-Stubby Area).
* The IPv6 address of Loopback0 on R6 is 2000::6/128.
* The router ID of each router is 10.0.X.X, where X is the router number.
* The stub no-summary command is configured in Area 1 on R2 .
Which of the following statements is true ?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
Understanding OSPFv3 Areas and Routing Behavior
* OSPFv3 Area Types in the Network:
* Area 1 (Stub Area): Does not accept external LSAs (Type 5) but can receive Inter-Area-Prefix- LSAs (Type 3).
* Area 2 (Common Area): Fully functional area that allows both Type 3 (Inter-Area) and Type 5 (External) LSAs.
* Area 3 (NSSA - Not-So-Stubby Area): Does not accept Type 5 (External) LSAs but allows ASBRs to inject external routes using Type 7 LSAs, which are later converted to Type 5 in other areas.
* Effect of stub no-summary Command on Area 1 (Configured on R2):
* This command prevents Type 3 LSAs from entering Area 1 , meaning R4 will not learn about
2000::6/128 from other areas.
* R4 only has a default route (::/0) provided by R2 but not individual routes like 2000::6/128 .
Route and Packet Flow Analysis
A). " The LSDB of R4 contains the Inter-Area-Prefix-LSA that is generated by R1 and describes 2000::6
/128. " # (False)
* R4 is in Area 1 (a totally stub area), which does not receive Type 3 LSAs.
* Since 2000::6/128 is an external route from Area 2, it will not be present in R4's LSDB.
* Thus, R4 does NOT have the Inter-Area-Prefix-LSA for 2000::6/128.
# Statement A is incorrect.
B). " The path for data packets from R4 to 2000::6 is R4 - > R1 - > R5 - > R3 - > R6. " # (False)
* R4 is in a totally stub area (Area 1), and it does not have a specific route for 2000::6/128 .
* It only has a default route (::/0) pointing to R2 .
* If R4 forwards traffic, it will send it to R2, NOT via R1, R5, and R3.
# Statement B is incorrect.
C). " The routing table of R4 does not contain the route 2000::6/128. " # (True - Correct Answer)
* R4 is in a totally stub area (Area 1), meaning it only receives a default route from R2 (::/0).
* It does NOT receive specific routes like 2000::6/128.
# Statement C is correct.
D). " The path for data packets from R4 to 2000::6 is R4 - > R2 - > R6. " # (False)
* While R4 does forward all unknown traffic to R2 (due to the default route), R2 will NOT directly forward to R6.
* R2 is an ABR (Area Border Router), and the actual path to 2000::6 must traverse Area 2, likely through other routers.
# Statement D is incorrect.
Final Conclusion:
# C. The routing table of R4 does not contain the route 2000::6/128.
Thus, the correct answer is: C. The routing table of R4 does not contain the route 2000::6/128.
Reference:
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - OSPFv3 Area Types (Stub, NSSA, Common) Huawei Official HCIP-Datacom Study Guide - OSPFv3 LSAs and Routing Table Analysis Huawei Documentation on Stub Area Behavior with stub no-summary Configuration
NEW QUESTION # 87
When troubleshooting a network, if you need to confirm the business traffic path, which of the following may need to be done ()
Answer: A,B,D
NEW QUESTION # 88
On the OSPF network shown in the figure, area 1 is a totally NSSA, area 2 is a common area, and R4 imports an external route 10.0.4.4/32. The router ID of each router is 10.0.X.X, where X is the number of the router.
The asbr-summary 10.0.4.0 255.255.255.0 command is configured in the OSPF processes of R1 and R3.
Which of the following statements is true?
Answer: D
Explanation:
R4 is an ASBR inside Area 1, which is configured as a totally NSSA. When R4 imports 10.0.4.4/32, it originates a Type 7 NSSA LSA within Area 1. Therefore, option A is incorrect: a totally NSSA can contain Type 7 LSAs for external routes imported locally.
Type 7 LSAs have area-local flooding scope. R1 and R3, acting as NSSA ABRs, do not flood the original Type 7 LSA into Area 0 or Area 2. Instead, the selected translator converts the external information into a Type 5 LSA. The configured asbr-summary 10.0.4.0 255.255.255.0 command causes the translated external information to be advertised as the summarized 10.0.4.0/24 Type 5 LSA.
Area 2 is a common area and therefore cannot contain Type 7 LSAs. Option C is incorrect because Area 0 receives the translated Type 5 external LSA. Option D is not a valid conclusion because common and backbone areas support Type 4 LSAs, and asbr-summary does not suppress that LSA type. Huawei's LSA support table explicitly identifies Type 7 as supported only in NSSA and totally NSSA areas. Huawei OSPF documentation
NEW QUESTION # 89
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