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Exam Code: H12-821_V1.0
Exam Name: HCIP-Datacom-Core Technology V1.0
Updated: Aug 11, 2026
Q & A: 385 Questions and Answers
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| Section | Weight | Objectives |
|---|---|---|
| Routing and Traffic Control | 10% | - Route import and redistribution - Routing policy and filtering - Policy-based routing |
| IS-IS Fundamentals | 8% | - IS-IS configuration and deployment - IS-IS protocol principles |
| Routing Basics | 3% | - Routing concepts and classification - Routing table composition and selection rules |
| Network Security | 8% | - AAA authentication - Attack defense and security policy - ACL and packet filtering |
| IPv6 Technologies | 3% | - IPv6 routing protocols - IPv6 address structure and configuration |
| Multicast Technologies | 9% | - PIM protocol - Multicast basic concepts - IGMP protocol |
| BGP Fundamentals | 17% | - BGP route attributes and selection - BGP characteristics and working principles - BGP configuration and policy application |
| OSPF Fundamentals | 16% | - OSPF principles and operation mechanisms - OSPF special applications and troubleshooting - OSPF configuration and optimization |
| Network Reliability | 7% | - VRRP protocol - BFD technology - Device redundancy and link backup |
| Ethernet Switching Technologies | 7% | - Link aggregation and stack technology - VLAN principles and configuration - Spanning Tree Protocol |
| Network Solutions and Design | 5% | - Enterprise network design principles - Typical network architecture and solution |
| Network Service and Management | 5% | - Network management and monitoring - DHCP and DNS services |
| WLAN Basics | 2% | - WLAN deployment and optimization - WLAN technology principles |
1. On an IS-IS network, each router can generate LSPs. Which of the following events trigger the generation of a new LSP?
A) Periodic updates occur.
B) The IS-IS interface cost is increased.
C) Related IS-IS interfaces go up or down.
D) Inter-area IP routes change.
2. In addition to numerous normal service packets, the CPUs of devices on a network may also receive large numbers of attack packets. To ensure that the CPUs can properly respond to normal services, the devices provide the local attack defense function.
Which of the following statements are true about this function? (Select all that apply)
A) Regardless of the packet type, the same rate limit must be set to reduce the number of packets sent to the CPU.
B) CPU attack defense can also take effect on the management interface of the device.
C) To ensure that session-based application-layer data runs properly during an attack, you can configure the dynamic link protection function.
D) The device can schedule the protocol packets to be sent to the CPU in the attack defense policy based on the protocol priorities so that the packets with higher priorities are processed preferentially.
3. The VRID of the VRRP virtual router is 3 and the virtual IP address is 100.1.1.10. What is the virtual MAC address?
A) 00-00-5E-00-01-03
B) 01-00-5E-00-01-64
C) 01-00-5E-00-01-03
D) 00-00-5E-00-01-64
4. STAs stay on different subnets before and after Layer 3 roaming. To enable the STAs to access the original network after roaming, network engineers need to configure user traffic to be forwarded to the original subnet over a CAPWAP tunnel.
A) TRUE
B) FALSE
5. On the OSPF network shown in the figure, an adjacency has been established between R1 and R2. An engineer configures the commands in the figure on R2. In this case, which of the following routing entries may exist in the routing table of R2?
A) 10.1.3.0/24
B) 10.1.1.0/24
C) 10.1.2.0/24
D) 10.1.4.0/24
Solutions:
| Question # 1 Answer: A,B,C | Question # 2 Answer: B,C,D | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: A,C,D |
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