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Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) exam is a valuable certification for IT professionals who want to demonstrate their expertise in core data communication technologies. Passing H12-821_V1.0 Exam validates the candidate's knowledge and skills in the latest networking technologies and provides them with a competitive advantage in the job market.

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q958-Q963):

NEW QUESTION # 958
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. To ensure that session-based application-layer data runs properly during an attack, you can configure the dynamic link protection function.
B. Regardless of the packet type, the same rate limit must be set to reduce the number of packets sent to the CPU.
C. CPU attack defense can also take effect on the management interface of the device.
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.

Answer: A,C,D

Explanation:
A is correct- Local attack defense can classify and prioritize packets (e.g., OSPF, BGP, SSH) andensure critical protocols are processed firstby the CPU.
B is correct- Thedynamic link protection functionensures session-based applications (like SSH)are not disruptedeven during a CPU attack.
C is false- Different protocols havedifferent importance levels, soindividual rate limitsshould be configured, not a uniform one.
D is correct- CPU protectionalso applies to management interfaces, such as those used for Telnet, SSH, or SNMP.
Reference from Huawei HCIP-Datacom-Core Technology Study Guide:
"Devices support local attack defense by classifying packets, setting priorities, and limiting rates to protect CPU resources. These policies also apply to the management interface." (Chapter: Network Security - Section: Local Attack Defense)

NEW QUESTION # 959
OSPF is a link state protocol. Link state information includes which of the following items? (Multiple choice)

A. Link overhead
B. Neighbor routers connected on the link
C. Interface IP address and its mask
D. Link type

Answer: A,B,C,D

NEW QUESTION # 960
Which of the following descriptions of MSTP port status is incorrect?

A. The Alternate port and Backup port can only be in the Discarding state.
B. The root port, designated port and domain edge port will eventually be in the Forwarding state
C. Alternate port and Backup port can be in Learning state
D. Root ports, designated ports, and domain edge ports can be in Discarding state

Answer: C

NEW QUESTION # 961
On an IS-IS network, areas are divided by router, and a router can belong to only one area. Therefore, an IS-IS router only needs to maintain the LSDB of its area.

A. FALSE
B. TRUE

Answer: A

Explanation:
IS-IS Area Division:
IS-IS divides areas by routers, not by links. A router is assigned to a specific IS-IS area, but it can belong to multiple levels:
Level 1: Maintains the LSDB (Link State Database) for the local area only.
Level 2: Maintains the LSDB for the backbone area and exchanges routes between areas.
Behavior of a Level 1-2 Router:
A router configured as Level 1-2 must maintain two separate LSDBs:
One for intra-area routes (Level 1).
One for inter-area routes (Level 2).
Incorrect Statement:
The statement that an IS-IS router only needs to maintain the LSDB of its area is incorrect because Level 1-2 routers maintain LSDBs for both levels.

NEW QUESTION # 962
Which of the following descriptions about OSPF virtual connections is wrong?

A. The virtual connection is actually a logical channel
B. The area through which the virtual connection is configured must have all the routing information
C. Virtual connections increase the complexity of the network
D. The virtual link must be configured in two ASBRs

Answer: D

NEW QUESTION # 963
......

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