Huawei H12-221-ENU : HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)

H12-221-ENU real exams

Exam Code: H12-221-ENU

Exam Name: HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network)

Updated: Nov 02, 2026

Q & A: 597 Questions and Answers

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Huawei H12-221-ENU Exam Syllabus Topics:

SectionObjectives
Topic 1: Enterprise Network Fundamentals- Network device roles and architecture
- TCP/IP model and IP addressing
- IPv4/IPv6 fundamentals
Topic 2: Network Security Fundamentals- ACL configuration and traffic filtering
- Basic device security hardening
Topic 3: WAN and MPLS Basics- MPLS architecture overview
- VPN fundamentals (L2VPN/L3VPN concepts)
Topic 4: IP Services- NAT/PAT implementation
- NTP and basic network services
- DHCP configuration and relay
Topic 5: LAN Switching Technologies- EtherChannel / link aggregation
- VLANs and VLAN implementation
- STP/RSTP/MSTP concepts and configuration
Topic 6: Network Management and Troubleshooting- Basic troubleshooting methodologies
- Network monitoring and diagnostics tools
Topic 7: Routing Technologies- Static routing and policy-based routing
- OSPF (single-area and multi-area)
- IS-IS fundamentals
- BGP basics and route selection

Huawei HCIP-Routing&Switching-IERS(Huawei Certified ICT Professional-Implementing Enterprise Routing and Switching Network) Sample Questions:

Question #1

ASBR in the OSPF NSSA area can import external routes to the area. However, the ABR in the NSSA area do not flood the fourth and fifth types of LSA. Instead, the seventh type of LSA is converted into fifth type of LSA flooding to other areas.

  • A. False
  • B. True
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #2

The ABR is used to connect the backbone area and non-backbone area. It can be either a physical connection or logical connection with the backbone area.

  • A. TRUE
  • B. FALSE
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #3

Which of the following descriptions are correct about the preemption mechanism in the static LACP mode? (Multiple Choice)

  • A. To prevent the entire link from being unstable due to frequent link status changes, set the preemption delay.
  • B. If the preemption delay configuration on the two ends is different, the system selects the value with the larger preemption delay on both sides as the preemption delay.
  • C. The preemption mechanism of the static LACP mode is enabled by default.
  • D. When a high-priority interface recovers due to failover and then resumes, if the preemption is enabled, the restored high-priority interface will become active again after a delay; if it is not enabled, Preemption, the interface does not automatically become an active interface.
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

Question #4

About the description of P2MP networking, which is correct? (Multiple Choice)

  • A. No link layer protocol is P2MP by default. P2MP must be forcibly changed by other network types.
  • B. You can use the filter-Isa-out peer command to filter the sent LSA on a P2MP network
  • C. Devices with inconsistent mask lengths on the P2MP network cannot establish neighbor relationships. However, you can use the ospf p2mp-mask-ignore command to break this limitation.
  • D. The election of DR/BDR is required in the P2MP network.
Reveal Solution  Discussion  0

Correct Answer: A,B,C  🗳️

Question #5

BGP connection-establishment. When no load balancing is configured, the BGP speaker advertises only one best route in the BCP routing table to the neighbor.

  • A. TRUE
  • B. FALSE
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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