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Huawei H12-821_V1.0 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| OSPF | - OSPF Fundamentals
|
| Network Service and Management | - O&M Technologies
|
| IPv6 | - IPv6 Fundamentals
|
| Routing and Traffic Control | - Traffic Management
|
| Network Reliability | - Reliability Technologies
|
| Network Solutions | - Enterprise Network Solutions
|
| BGP | - BGP Technologies
|
| Network Security | - Security Technologies
|
| Multicast | - IP Multicast Technologies
|
| Ethernet Switching Technology | - Switching Fundamentals
|
| Routing Basics | - IP Routing Fundamentals
|
| IS-IS | - IS-IS Fundamentals
|
| WLAN | - Wireless Networking
|
Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:
On a WLAN, the HSB service sets up an HSB channel between two devices that back up each other, maintains the channel status, and backs up data. Which of the following can HSB back up in real time?
- A. AP entries
- B. User data information
- C. CAPWAP tunnel information
- D. DHCP address information
Correct Answer: A,B,C 🗳️
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When deploying BFD, you need to adjust some parameters so that it can better detect the network status.
Which of the following statements is false about BFD optimization?
- A. To quickly learn about the network status and performance requirements, you can set the interval for sending BFD packets to the minimum value.
- B. If a BFD session flaps, master/backup switchovers are frequently performed on the application associated with the BFD session. To prevent this, set the WTR time of the BFD session.
- C. After a high priority is configured for BFD packets, BFD packets are preferentially forwarded.
- D. On a live network, some devices switch traffic only when a BFD session changes to the Up state. If a routing protocol goes Up later than an interface, no route is available for switching traffic back, leading to traffic loss. To resolve this issue, configure a delay to compensate for the time difference caused when the routing protocol goes Up later than the interface.
Correct Answer: A 🗳️
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See the following figure. All routers on the network run IS-IS and are in area 49.0001. By referring to the LSDB of R1, the Level-2 DIS is. (Enter the device name, for example, R1.)
Reveal Solution Discussion 0Correct Answer:
R3
Explanation:
Understanding the LSDB and Level-2 DIS Election in IS-IS:
In IS-IS, the Designated Intermediate System (DIS) is elected for both Level-1 and Level-2 on broadcast networks to manage the link-state database (LSDB) and reduce the number of LSAs exchanged.
The election of the DIS is based on the highest priority. If the priority is the same, the router with the highest System ID becomes the DIS.
HCIP-Datacom-Core Technology Training Material (IS-IS DIS Election).
Analyzing the LSDB:
From the LSDB of R1, the Level-2 link-state database includes the following entries:
LSPID 0100.0000.3003.00-00: This is R3, and it is present in the Level-2 LSDB with the sequence number and checksum details.
Other routers (R1, R2, R4) are present but do not have the characteristics of the Level-2 DIS in this topology.
Based on the System IDs, R3 (0100.0000.3003) has the highest System ID, making it the Level-2 DIS.
Conclusion:
The Level-2 DIS on the network is R3, based on the election rules and the LSDB information shown in the figure.
On the network shown in the following figure, the management VLAN is VLAN 10, and the AP is configured to obtain an IP address on the network segment 10.1.1.0/24 through DHCP. The AP, AC, and AR function as the DHCP client, DHCP relay agent, and DHCP server, respectively. Which of the following configurations for the DHCP relay agent and DHCP server are correct?
- A. [AR] ip pool AP[AR-ip-pool-AP] network 10.1.1.0 mask 24[AR-ip-pool-AP] gateway-list 10.1.1.2[AR- ip-pool-AP] excluded-ip-address 10.1.1.1[AR-ip-pool-AP] quit[AR] interface GigabitEthernet 0/0/1
[AR-GigabitEthernetO/O/1] dhcp select global[AR-GigabitEthernet0/0/l] quit[AR] ip route-static
10.1.1.0 255.255.255.0 172.21.1.1 - B. [AC] dhcp server group AP[AC-dhcp-server-group-AP] dhcp-server 172.21.1.2[AC-dhcp-server-group- AP] quit[AC] interface Vlanif 10[AC-Vlanif 10] dhcp select relay[AC-Vlanif 10] dhcp relay server- select AP[AC-Vlanif 10] quit
- C. [AR] ip pool AP[AR-ip-pool-AP] network 172.21.1.0 mask 24[AR-ip-pool-AP] gateway-list 172.21.1.2
[AR-ip-pool-AP] excluded-ip-address 172.21.1.1[AR-ip-pool-AP] quit[AR] interface GigabitEthernet 0
/0/1[AR-GigabitEthernetO/0/1] dhcp select global[AR-GigabitEthernetO/0/1] quit[AR] ip route-static
10.1.1.0 255.255.255.0 172.21.1.1 - D. [AC] dhcp server group AP[AC-dhcp-server-group-AP] dhcp-server 10.1.1.2[AC-dhcp-server-group- AP] quit[AC] interface Vlanif 10[AC-Vlanif 10] dhcp select relay[AC-Vlanif 10] dhcp relay server- select AP[AC-VlaniflO] quit
Correct Answer: A,B 🗳️
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Which of the following statements is true about BGP?
- A. Open messages carry only the BGP header.
- B. IGP routes can be converted into BGP routes only through the network command.
- C. A router cannot be configured with multiple BGP processes.
- D. If the export routing policy applied to a BGP peer changes, manual intervention is required so that the device resends Update messages to the peer.
Correct Answer: D 🗳️
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