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| Section | Weight | Objectives |
|---|---|---|
| MPLS Technologies | 19% | - MPLS principles - MPLS VPN applications - MPLS forwarding - MPLS configuration |
| Network Cutover | 7% | - Basic cutover concepts - Migration process |
| Advanced IGP Features | 17% | - Fast convergence - Route control - IS-IS advanced features - OSPF advanced features |
| Network Troubleshooting | 10% | - Troubleshooting methods - Structured troubleshooting processes |
| IPv6 Routing | 20% | - IPv6 static routes - OSPFv3 - IS-IS for IPv6 - BGP4+ |
| Advanced Ethernet Technologies | 10% | - Ethernet security - VLANs |
| Network O&M | 7% | - Routine maintenance - Data collection |
| Advanced BGP Features | 10% | - Inter-domain routing optimization - Route reflectors - Advanced BGP features - BGP route control |
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NEW QUESTION # 52
The figure shows the logical network architecture of a migration project . The purpose of the migration is to enable terminals in different geographical locations to communicate with each other and deploy the gateway of the terminals on the PE routers .
After the migration is complete, which of the following methods can be used by network engineers to preliminarily check the network connectivity?
Options:
Answer: A,C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding the Network Setup
* PE1 (Provider Edge 1) is the gateway for network 192.168.1.1/24.
* PE2 (Provider Edge 2) is the gateway for network 192.168.2.1/24.
* A cloud-based backbone connects PE1 and PE2.
* To verify end-to-end communication, engineers need to check reachability between PE1 and PE2.
2. Evaluating Each Answer Option
* Option A: " Configuring NQA on PE1 and PE2, with the destination address being the IP address of each other. "
* # Correct.
* NQA (Network Quality Analysis) is a network testing tool that allows connectivity testing between two devices.
* Configuring NQA between PE1 and PE2 will verify end-to-end reachability.
* Option B: " On PE1 and PE2, checking whether the ARP table contains the ARP entry of the peer network segment. "
* # Incorrect.
* ARP (Address Resolution Protocol) is only used for resolving MAC addresses within the same broadcast domain.
* Since PE1 and PE2 are in different network segments (separated by a routed network), they will not have ARP entries for each other.
* Instead, routing entries should be checked, not ARP.
* Option C: " On PE1, using 192.168.1.1 as the source address to ping 192.168.2.1. "
* # Correct.
* A simple ping test using the source address of PE1 (192.168.1.1) to reach PE2 (192.168.2.1) will verify whether routing between the two locations is functional.
* Option D: " On PE1 and PE2, checking whether there are routes to each other's network segment in the routing tables. "
* # Correct.
* If routing is not configured correctly, PE1 and PE2 will not know how to reach each other.
* Checking the routing table ensures that both PEs have the correct next-hop information.
Final answer:
# A, C, and D are correct.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* Using NQA for Network Connectivity Testing
* Verifying Routing Table Entries for Inter-Network Communication
* Understanding ARP and Its Limitations in Routed Networks
NEW QUESTION # 53
When 0SPFV2 evolves to 0SPFV3, the LSA format and function are exactly the same, but the network layer in the LSA address from IPv4 to IPv6o
Answer: A
NEW QUESTION # 54
On the network shown in the figure, IS-IS IPv6 runs on R2, R6, and R3, and the IPv6 address of Loopback0 on R6 is 2000::6/128. OSPFv3 runs on other links. Area 1 is a stub area, and Area 2 is an NSSA. IS-IS routes are imported to OSPFv3 on R2 and R3. Which of the following statements are false?
Answer: C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
To determine which statements are false, we need to understand how OSPFv3 and IS-IS work together, and how Inter-Area-Router LSAs (Type 3 LSAs) are generated in OSPF:
1. Understanding OSPF Inter-Area LSAs (Type 3)
* OSPF generates Type 3 LSAs (Inter-Area-Prefix LSAs) to advertise networks between areas.
* Only Area Border Routers (ABRs) generate Inter-Area LSAs.
* Type 3 LSAs allow routes to be advertised from one OSPF area to another (e.g., from Area 0 to Area 1 or Area 2).
2. Analysis of Each Answer Option:
# A. "R3 generates an Inter-Area-Router-LSA in Area 0." # TRUE
* R3 is an ABR (connecting IS-IS and OSPF Area 0).
* Since R3 is importing IS-IS routes into OSPFv3, it must generate Type 3 LSAs to advertise those routes in Area 0.
* This statement is correct.
# B. "R2 generates an Inter-Area-Router-LSA in Area 0." # TRUE
* R2 is also an ABR (connecting IS-IS and OSPF Area 0).
* Like R3, R2 imports IS-IS routes into OSPFv3 and advertises them into Area 0 using Type 3 LSAs.
* This statement is correct.
# C. "R1 generates an Inter-Area-Router-LSA in Area 2." # FALSE
* R1 is not an ABR.
* Only ABRs generate Type 3 LSAs, and R1 is not an ABR between Area 2 and Area 0.
* This statement is false.
# D. "R2 generates an Inter-Area-Router-LSA in Area 1." # FALSE
* Area 1 is a stub area, and stub areas do not allow Inter-Area-Router LSAs (Type 3 LSAs) for external routes.
* R2 does not generate Inter-Area LSAs in Area 1 because OSPF prevents this in stub areas.
* This statement is false.
NEW QUESTION # 55
Configure ipv6 preference in IS-IS protocol view. The function of this command is to configure the priority of IPv6 routes generated by IS-Is protocol.
Answer: A
NEW QUESTION # 56
A company purchased private lines from two operators. In order to optimize the lines, the company used the 6GP protocol to learn from two Route entries that operate off. However, after the enterprise found that this configuration, the traffic of the port route increased greatly, and the network engineering arrangement After investigation, it was found that the traffic of the two operators was passed to each other through the enterprise egress router. Therefore, the enterprise intends to use the routing strategy so that the traffic of the packets of different carriers is no longer passed to each other. Is the configuration in the following figure correct?
Answer: A
NEW QUESTION # 57
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