- Exam Code: H12-221-ENU
- Exam Name: HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)
- Updated: Sep 27, 2026
- Q & A: 597 Questions and Answers
Huawei H12-221-ENU Exam : HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)
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Huawei H12-221-ENU Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| WAN and MPLS Basics | - VPN fundamentals (L2VPN/L3VPN concepts) - MPLS architecture overview |
| Routing Technologies | - OSPF (single-area and multi-area) - BGP basics and route selection - IS-IS fundamentals - Static routing and policy-based routing |
| LAN Switching Technologies | - VLANs and VLAN implementation - EtherChannel / link aggregation - STP/RSTP/MSTP concepts and configuration |
| Network Security Fundamentals | - ACL configuration and traffic filtering - Basic device security hardening |
| IP Services | - NAT/PAT implementation - NTP and basic network services - DHCP configuration and relay |
| Enterprise Network Fundamentals | - IPv4/IPv6 fundamentals - Network device roles and architecture - TCP/IP model and IP addressing |
| Network Management and Troubleshooting | - Basic troubleshooting methodologies - Network monitoring and diagnostics tools |
Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:
Question #1
In an OSPF broadcast or NBMA network type, a device with a large router priority does not necessarily become a DR.
- A. False
- B. True
Correct Answer: B 🗳️
Question #2
For link-state routing protocols, such as OSPF and IS-IS, filtering the route in the inbound direction with filter-policy can block the transmission of link state information, so that the filtered route cannot be added to the local routing table.
- A. False
- B. TRUE
Correct Answer: A 🗳️
Question #3
Which of the following is true about BGP, OSPF, ISIS and RIP?
- A. BGP neighbor relationship based on the establishment of TCP session
- B. RIP runs on the UDP session and uses a port number of 179.
- C. ISIS runs on the basis of the IP protocol and uses the protocol number 89.
- D. OSPF runs on the basis of the IP protocol and uses the protocol number 90.
Correct Answer: A 🗳️
Question #4
The address prefix list uses the source address, the destination address and the next hop address prefix as filters for matching conditions and can only be used when the routing protocol receives the route.
- A. TRUE
- B. FALSE
Correct Answer: B 🗳️
Question #5
The most important reason for the BGP protocol being an enhanced distance vector protocol is:
- A. BGP does not accept routes containing the AS number in the AS-Path attribute.
- B. Nexthop is a recognized mandatory attribute of BGP routing.
- C. The BGP route uses the AS-Path attribute and the list of AS that is recorded in the path of the transmission. In the routing rule, the router with short AS-Path is priority, and the AS-PATH attribute is also checked in IBGP.
- D. The BGP route uses the As-Path attribute and the list of AS that is recorded in the path of the transmission. In the routing rule, the router with short AS-Path is priority.
Correct Answer: D 🗳️
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