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Huawei H12-261-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| MPLS and VPN Technologies | 15% | - IPsec and VPN security - MPLS architecture and label switching - MPLS L3VPN and L2VPN |
| IPv4 Routing Protocols | 30% | - BGP route attributes and selection - OSPFv2 principles and advanced configuration - Routing policies and route control - IS-IS protocol deployment and optimization |
| Network Design, Operation and Troubleshooting | 10% | - Network monitoring and management - Large-scale network architecture design - Fault diagnosis and resolution |
| Layer 2 Technologies | 20% | - Link aggregation and redundancy - Ethernet and VLAN principles - STP/RSTP/MSTP protocols - VRRP and BFD |
| IPv6 and Multicast | 15% | - OSPFv3 and BGP4+ - IGMP and PIM multicast protocols - IPv6 addressing and transition mechanisms |
| Network Security and QoS | 10% | - ACL, security policy and AAA - Attack defense and traffic filtering - QoS models, classification and scheduling |
Huawei HCIE-Routing&Switching (Written)(Huawei Certified ICT Expert-Routing & Switching) Sample Questions:
Question 1
In multicast network, what happens to multicast traffic that cannot be forwarded normally? (Multiple choice)
A. The router does not have RPF routes.
B. Multi-router exit network, this router is not DR
C. PIM is not enabled on the RPF interface.
D. The upstream router discards the received PIM Join message.
Question 2
Which of the following description is wrong about the VPNv4 address?
A. Before the local PE advertises the VPNv4 route learned from the site directly connected to itself to other PEs, it sets the Target attribute for these routes and advertises it as a BGP extended community attribute along with the route.
B. By default, the PE does not perform vpn-target filtering on the received VPNv4 routes.
C. The VPNv4 address has a total of 12 bytes, including an 8-word route identifier RD (Route Distinguisher) and a 4-byte IPv4 address prefix.
D. When BGP advertises reachable and unreachable VPNv4 routes, it carries the RD attribute.
Question 3
Regarding the BGP anti-ring mechanism, which of the following descriptions are correct? (Multiple Choice)
A. Use the AS-PATH attribute between the autonomous systems to prevent loops.
B. You can use the AS-CONFED-SET attribute to prevent loops within the federation.
C. The Cluster List attribute is used for the anti-ring in the reflector cluster. If the router discovers that the cluster list of the route entry contains its own cluster ID, it will reject the route.
D. Routes learned from IBGP are not advertised to IBGP neighbors to prevent routing loops within the AS.
Question 4
RD is used to distinguish the same IP address in different VPNs. How many bits does the RD contain?
A. 32
B. 64
C. 16
D. 128
Question 5
Which of the following tools cannot be directly referenced by the If-match clause in the Route-policy?
A. Community-filt
B. IP-prefix
C. AS-path-filter
D. Regular expression
Solutions:
| Question 1 Answer: A,C,D | Question 2 Answer: B | Question 3 Answer: A,B,D | Question 4 Answer: B | Question 5 Answer: D |






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