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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Ethernet Technologies | 10% | - Ethernet security - VLANs |
| Topic 2: Network Troubleshooting | 10% | - Troubleshooting methods - Structured troubleshooting processes |
| Topic 3: IPv6 Routing | 20% | - IS-IS for IPv6 - BGP4+ - OSPFv3 - IPv6 static routes |
| Topic 4: MPLS Technologies | 19% | - MPLS VPN applications - MPLS principles - MPLS forwarding - MPLS configuration |
| Topic 5: Network Cutover | 7% | - Basic cutover concepts - Migration process |
| Topic 6: Network O&M | 7% | - Data collection - Routine maintenance |
| Topic 7: Advanced BGP Features | 10% | - Advanced BGP features - BGP route control - Route reflectors - Inter-domain routing optimization |
| Topic 8: Advanced IGP Features | 17% | - IS-IS advanced features - Fast convergence - Route control - OSPF advanced features |
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NEW QUESTION # 60
IS-IS is a link-state routing protocol that uses the SPF algorithm for route calculation. As shown in the figure, a campus deploys both IPv4 and IPv6 and runs IS-IS to achieve network interconnection. R2 only supports IPv4. Which of the following statements is true about the topology calculation of this network?
Answer: D
NEW QUESTION # 61
A network engineer provides a troubleshooting report after rectifying a fault. The actual network is simplified into the one shown in the figure, where R1 and R2 both have OSPF enabled and function as the gateways of PC1 and PC2, respectively.
Given this, which of the following statements are true?
Network Topology:
* R1:
* Interface GE0/0/0: 10.0.12.1/24 (Connected to R2)
* Interface GE0/0/1: 192.168.1.1/24 (Gateway for PC1)
R2:
* Interface GE0/0/0: 10.0.12.2/24 (Connected to R1)
* Interface GE0/0/1: 192.168.1.2/24 (Gateway for PC2)
Options:
Answer: A,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* Understanding the network connectivity:
* R1 and R2 are connected through 10.0.12.0/24 and running OSPF in Area 0.
* PC1 (192.168.1.11/24) is connected to R1, and PC2 (192.168.1.12/24) is connected to R2.
* Analyzing each option:
* Option A: " R2 cannot ping 10.0.12.1. " # Incorrect
* R2 is directly connected to 10.0.12.1/24 (R1) on GE0/0/0, so it can ping this IP without any routing issues.
* Option B: " PC1 and PC2 cannot ping each other. " # Correct
* OSPF is only running between R1 and R2. There is no indication that R1 and R2 are redistributing connected routes (192.168.1.0/24 and 192.168.1.0/24) into OSPF.
* As a result, R1 does not know how to reach 192.168.1.12, and R2 does not know how to reach 192.168.1.11, making communication between PC1 and PC2 impossible.
* Option C: " R1 cannot ping 192.168.1.2. " # Incorrect
* 192.168.1.2 is directly connected to R2, and if R1 can reach R2 through OSPF, then R1 should be able to ping 192.168.1.2.
* Option D: " R1 cannot ping 192.168.1.12. " # Correct
* 192.168.1.12 is connected to R2, but if R2 does not advertise this network to R1, R1 has no route to reach it.
* Since PC1 (192.168.1.11) and PC2 (192.168.1.12) are on different subnets, and there ' s no redistribution, R1 cannot reach PC2 ' s IP.
Key Takeaways and Fix Recommendations:
* To allow PC1 and PC2 to communicate, R1 and R2 must advertise their directly connected networks (192.168.1.0/24) in OSPF using the network command or by redistributing connected routes into OSPF.
* Command example:
makefile
CopyEdit
R1:
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
R2:
router ospf 1
network 192.168.1.0 0.0.0.255 area 0
* This would allow R1 to learn about PC2 ' s network and R2 to learn about PC1 ' s network, enabling communication.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* HCIP-Datacom Official Certification Guide, Chapter on OSPF Network Design and Troubleshooting.
* Huawei Datacom Training Materials, Section on OSPF Inter-Area and External Route Advertisements.
* Huawei Datacom Configuration Guide, Command Reference for OSPF network advertisement and route redistribution.
NEW QUESTION # 62
On the BGP/MPLS IP VPN network shown in the figure, an administrator wants to use the hub-spoke networking to implement centralized management and control of VPN traffic at the hub site. Meet this requirement by dragging the RTs to their corresponding positions. (Tokens can be reused.)
Answer:
Explanation:
Explanation:
In a hub-and-spoke VPN topology :
* Spoke sites should be able to communicate only with the hub , not directly with each other.
* This is achieved through RT (Route Target) control:
* Spokes export routes with ERT = 200:1
* Hub imports those routes with IRT = 200:1
* Hub exports routes with ERT = 100:1
* Spokes import those hub routes using IRT = 100:1
This results in:
* Spokes receive hub routes , but
* Spokes do not receive each other ' s routes , preventing direct spoke-to-spoke communication.
Official Huawei Extract:
" In a hub-spoke topology, spokes use one RT to export (e.g., 200:1), and the hub uses that as its import RT. The hub exports routes with a different RT (e.g., 100:1), and spokes import that RT. This enforces centralized traffic control through the hub. "
- [Huawei HCIA-Datacom Certification Guide - MPLS VPN and Route Target Control]
NEW QUESTION # 63
IEIF expands the functions of OSPF by taking advantage of the strong expansibility of OSPF. To enable it to support IPv6 networks, the expanded protocol is called OSPFv3. OSPFv3 is compatible with OSPFv2.
Answer: A
NEW QUESTION # 64
In the network shown in the figure, the DHCP Server function is enabled on the R2 GE0/0/0 interface, and the address pool is the global address pool. The R1 GE0/0/0 and CE0/0/1 interfaces are used as DHCP clients. By default, none of the R1 interfaces can obtain an IP address.
Answer: A
NEW QUESTION # 65
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