- Exam Code: H12-821_V1.0
- Exam Name: HCIP-Datacom-Core Technology V1.0
- Updated: Aug 10, 2026
- Q & A: 385 Questions and Answers
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| Section | Weight | Objectives |
|---|---|---|
| Network Reliability | 7% | - VRRP protocol - Device redundancy and link backup - BFD technology |
| WLAN Basics | 2% | - WLAN deployment and optimization - WLAN technology principles |
| Multicast Technologies | 9% | - IGMP protocol - PIM protocol - Multicast basic concepts |
| IS-IS Fundamentals | 8% | - IS-IS configuration and deployment - IS-IS protocol principles |
| Network Service and Management | 5% | - Network management and monitoring - DHCP and DNS services |
| IPv6 Technologies | 3% | - IPv6 routing protocols - IPv6 address structure and configuration |
| Network Solutions and Design | 5% | - Typical network architecture and solution - Enterprise network design principles |
| Network Security | 8% | - Attack defense and security policy - ACL and packet filtering - AAA authentication |
| BGP Fundamentals | 17% | - BGP configuration and policy application - BGP route attributes and selection - BGP characteristics and working principles |
| OSPF Fundamentals | 16% | - OSPF special applications and troubleshooting - OSPF principles and operation mechanisms - OSPF configuration and optimization |
| Routing and Traffic Control | 10% | - Routing policy and filtering - Route import and redistribution - Policy-based routing |
| Ethernet Switching Technologies | 7% | - VLAN principles and configuration - Link aggregation and stack technology - Spanning Tree Protocol |
| Routing Basics | 3% | - Routing concepts and classification - Routing table composition and selection rules |
1. During the initial formation of a spanning tree in STP, all STP switches consider themselves as the root bridge. Therefore, by default, they generate and send configuration BPDUs periodically (every______seconds). (Enter only digits.)
2. What parameters can a DHCP6 server assign to a DHCPv6 client?
A) IPV6 address/prefix
B) Gateway address
C) DNS server address
D) SNTP server address
3. During routine operation and maintenance, an engineer checks the IGMP configuration on RTA. The configuration is as follows:
Interface information of VPN-Instance: public net
GigabitEthernet0/0/1 (192.168.1.1):
IGMP is enabled
Current IGMP version is 2
IGMP state: up
IGMP group policy: none
IGMP limit: -
Value of query interval for IGMP (negotiated): -
Value of query interval for IGMP (configured): 60 s
Value of other querier timeout for IGMP: 0 s
Value of maximum query response time for IGMP: 10 s
Querier for IGMP: 192.168.1.1 (this router)
Given this, which of the following statements is false?
A) The interval for sending Group-Specific Query messages is 60s.
B) The maximum response time to Query messages is 10s.
C) The IP address of the interface is 192.168.1.1.
D) The IGMP version is IGMPv2.
4. Without a prior version check, an engineer configures IGMP snooping on a device and the version of IGMP snooping is earlier than the IGMP versions on user hosts. In this case, which of the following situations will occur?
A) Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.
B) The IGMP versions of the hosts are automatically upgraded, and users can receive multicast data properly.
C) The IGMP snooping version of the device is automatically degraded, and users can receive multicast data properly.
D) Users cannot receive multicast data, but the device generates forwarding entries after receiving IGMP Report messages.
5. A switch running a later IGMP version can identify Report messages of an earlier IGMP version, but the switch running an earlier IGMP version cannot identify Report messages of a later IGMP version. To ensure that IGMP runs properly, you are advised to set the IGMP version on the switch to be the same as or later than the IGMP version of member hosts.
A) TRUE
B) FALSE
Solutions:
| Question # 1 Answer: Only visible for members | Question # 2 Answer: A,C,D | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: A |
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