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Huawei H12-221-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: LAN Switching Technologies | - EtherChannel / link aggregation - STP/RSTP/MSTP concepts and configuration - VLANs and VLAN implementation |
| Topic 2: IP Services | - NTP and basic network services - NAT/PAT implementation - DHCP configuration and relay |
| Topic 3: Network Management and Troubleshooting | - Basic troubleshooting methodologies - Network monitoring and diagnostics tools |
| Topic 4: WAN and MPLS Basics | - MPLS architecture overview - VPN fundamentals (L2VPN/L3VPN concepts) |
| Topic 5: Routing Technologies | - IS-IS fundamentals - OSPF (single-area and multi-area) - Static routing and policy-based routing - BGP basics and route selection |
| Topic 6: Network Security Fundamentals | - ACL configuration and traffic filtering - Basic device security hardening |
| Topic 7: Enterprise Network Fundamentals | - IPv4/IPv6 fundamentals - Network device roles and architecture - TCP/IP model and IP addressing |
Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:
The Origin attribute of the route injected into the BGP through the network command is:
- A. EGP
- B. Unknown
- C. IGP
- D. Incomplete
Correct Answer: C 🗳️
The difference between the PIM-SM protocol and the PIM-DM protocol is: (Multiple Choice)
- A. PIM-SM has RPT and SPT trees, while PIM-DM only has SPT trees.
- B. PIM-SM assumes that there are a small number of recipients in the network, while PIM-DM assumes that there are a large number of recipients in the network.
- C. The BSR/RP exists only in the PIM-SM network, but not in the PIM-DM.
- D. PIM-SM can implement on-demand forwarding. There is no redundant traffic in the network, and PIM-DM periodically floods, and there is no redundant traffic in the network.
Correct Answer: A,B,C 🗳️
Which description is wrong about BGP routing updates?
- A. BGP periodic update
- B. When the route is updated, the BGP device only sends the updated BCP route.
- C. If there is no RR, the BGP route obtained from the IBGP peer is advertised by the BGP device to its EBGP peer.
- D. The BGP route obtained from the EBGP peer is advertised by the BGP device to all its EBGP and IBGP peers.
Correct Answer: A 🗳️
The RTA is the source DR router, and the RTB is the RP router. The multicast source sends multicast data to the RTA. However, the source multicast source to which the PIM Register message is registered cannot be found on the RTB.What are the reasons in the following? (Multiple choices)
- A. The RP learned by RTA is not RTB.
- B. There is no unicast route from RTB to RTA.
- C. There is no multicast route from RTA to RTB.
- D. RTA routers cannot learn RP information.
Correct Answer: A,D 🗳️
In a multicast network environment, if IGMPv1 hosts and IGMPv2 routers (hereinafter referred to as version 1 hosts and version 2 routers) are co-located on the same LAN, how do they work together? (Multiple Choice)
- A. Membership reports sent by version 1 hosts are always received by version 2 routers.
- B. If a version 1 host exists in a specific group, the version 2 router must ignore any outgoing messages received in that group.
- C. Version 2 routers must set a group-related countdown timer that considers the existence of the Version 1 host.
- D. If there is a version 1 host in the LAN, all hosts must be required to use version 1.
Correct Answer: A,B,C 🗳️
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