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| Section | Weight | Objectives |
|---|---|---|
| Advanced Ethernet Technologies | 10% | - VLAN aggregation and MUX VLAN - Ethernet link aggregation and reliability - Port isolation and security features - QinQ and VLAN mapping |
| MPLS Technologies | 19% | - MPLS OAM and protection - MPLS VPN (L3VPN, L2VPN) - MPLS fundamentals and label distribution - LDP and RSVP-TE protocols |
| Network O&M | 7% | - Configuration management and backup - Routine maintenance procedures - Network monitoring and performance analysis - Log and alarm management |
| Network Cutover | 7% | - Implementation and rollback strategy - Post-cutover validation - Pre-cutover verification - Cutover planning and risk assessment |
| Advanced BGP Features | 10% | - BGP route selection and attributes - Routing policies and filtering - BGP multi-homing and load balancing - Route reflectors and confederations |
| Advanced IGP Features | 17% | - OSPF advanced features
|
| IPv6 Routing | 20% | - IPv6 address planning and configuration - BGP4+ for IPv6 - OSPFv3 and IS-IS for IPv6 - Transition mechanisms (dual-stack, tunnel, translation) |
| Network Troubleshooting | 10% | - Switching and link fault handling - Routing protocol fault diagnosis - Structured troubleshooting methodology - Performance and service fault resolution |
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NEW QUESTION # 34
On the OSPFv3 network shown in the figure, the LSDB of R2 contains ____ Router-LSAs. (Enter only digits.)
Answer:
Explanation:
3
NEW QUESTION # 35
MPLS supports multi-layer label nesting. When the device receives an MPLS message, it will first process the label close to the second-layer header, that is, the MPLS label at the top of the stack.
Answer: B
NEW QUESTION # 36
During an attempt to log in to a NetEngine AR6120 through the console port, the network engineer finds that the password is incorrect and the login fails. If a Telnet account can be used to log in to the device and the account has the permission to change the console port password, the network engineer can log in to the device through Telnet to change the console port password.
Answer: A
NEW QUESTION # 37
Service routes of an enterprise are transmitted on the network. Some configurations of PE1 and PE2 are shown in the figure. Which of the following LSAs may CE2 receive?
Answer: A,B
Explanation:
# Updated Explanation:
# OSPF Configuration Summary:
* Both PE1 and PE2 run OSPF multi-instance (ospf 10 vpn-instance VPN1)
* They share the same domain-id 123 , which is critical for controlling LSA type behavior.
* Routes from CE1 # PE1 # BGP # PE2 # CE2
# What Happens at PE2:
* PE2 receives VPNv4 BGP routes and re-injects them into OSPF .
* Since domain-id matches between PE1 and PE2, PE2 acts as an ABR , not as an ASBR .
* Therefore, routes are not treated as external (Type 5), but as inter-area (Type 3).
* PE2 is a normal OSPF router toward CE2 , so it also sends Type 1 LSAs for its own link and interface states to CE2.
# Final Analysis of Each Option:
* # Type 3 LSA - Yes PE2 re-injects BGP-learned routes into OSPF as inter-area (Type 3) due to matching domain-id.
* # Type 1 LSA - Yes PE2, as an OSPF router facing CE2, generates Router LSAs (Type 1) describing its own interfaces and links in the local area.
* # Type 5 LSA - No PE2 does not generate external LSAs because domain-id matches, and the routes are not treated as external.
* # Type 7 LSA - No Type 7 LSAs are only used in NSSA areas , and no NSSA area is mentioned or implied in the diagram.
# Correct answer: B, C
Official Huawei Extract:
" When the domain-id of two PEs is the same, VPN routes imported into OSPF from BGP are advertised as inter-area routes using Type 3 LSAs. The receiving PE also sends its own Router LSA (Type 1) into the local area. "
- [Huawei HCIA-Datacom Guide - OSPF Interworking with BGP/MPLS VPN]
NEW QUESTION # 38
In the network shown in the figure, adjacent routers use directly connected interfaces to establish EBGP neighbor relationships. The AS number is 6500X , where X is the router number. R1 and R4 both have static routes to 192.168.1.0/24, which are introduced into BGP through import. By default, in the R3 routing table, the AS_Path attribute carried by the route entry to 192.168.1.0/24 is which of the following?
Answer: B
NEW QUESTION # 39
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