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H12-821_V1.0 Answers Real Questions | Pass4sure H12-821_V1.0 Exam Prep

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The H12-821_V1.0 exam covers a wide range of topics related to data communication core technology, including network architecture, routing protocols, MPLS VPN technology, and network security. H12-821_V1.0 Exam is designed to test candidates' abilities to design, implement, and troubleshoot complex data communication networks using Huawei products and solutions.

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q173-Q178):

NEW QUESTION # 173
On an OSPF network, an IR in area 0 must be a BR, but an ASBR may not be an ABR.

A. TRUE
B. FALSE

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:
* Internal Router (IR): A router that exists entirely within a single OSPF area (e.g., Area 0). It does not have to be a Border Router (BR).
* Area Border Router (ABR): A router that connects two or more OSPF areas. It maintains separate LSDBs for each area and forwards summary LSAs between them.
* Autonomous System Boundary Router (ASBR): A router that connects the OSPF domain to an external network (e.g., BGP, another OSPF AS).
* The statement is false because:
* An IR in Area 0 does not have to be a BR (Border Router). It can just be a normal internal router.
* An ASBR does not have to be an ABR. An ASBR can exist inside any OSPF area, even a single area, without needing to connect multiple areas.
# Reference: Huawei HCIA-Datacom Study Guide, OSPF Router Types and Area Concepts.

NEW QUESTION # 174
An enterprise administrator wants to configure single-hop BFD to implement fast detection of direct links.
Which of the following configurations are mandatory?

A. Configure the local discriminator of a BFD session.
B. Enable BFD globally.
C. Configure a multicast IP address for BFD.
D. Configure the remote discriminator of a BFD session.

Answer: A,B,D

Explanation:
For single-hop BFD (Bidirectional Forwarding Detection), the configuration must include the local and remote discriminators to uniquely identify the session endpoints. Additionally, enabling BFD globally is a prerequisite for initiating BFD sessions. Configuring multicast IP addresses is unnecessary for single-hop BFD, as it operates over direct links. Huawei's configuration guidelines specify these requirements to ensure effective deployment and operation of BFD.
Understanding BFD (Bidirectional Forwarding Detection):
* BFD is a protocol used to detect link faults quickly between two routers.
* Single-hop BFD operates on directly connected links and is commonly used for fast fault detection in routing protocols like OSPF and BGP.

NEW QUESTION # 175
Multicast applies to any point-to-multipoint data transmission. Which of the following types of application data can be forwarded in multicast mode?

A. Data warehouse
B. Network TV
C. Livestreaming
D. Real-time audio conferencing

Answer: B,C,D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Multicast Applications:
Multicast is ideal for applications where data is sent from one source to multiple receivers, such as:
* Real-Time Audio Conferencing: Multicast delivers audio streams to participants without duplicating the same data for each receiver.
* Livestreaming: Streaming live events to viewers using multicast minimizes bandwidth usage by delivering a single stream to multiple users.
* Network TV: Multicast is used in IPTV to broadcast TV channels efficiently.
2. Why Data Warehouse is Incorrect:
* Data warehouse does not involve point-to-multipoint transmission. Data warehouse activities (e.g., analytics or database queries) typically use unicast connections for communication between the server and the client.
3. Summary:
* The correct options are A, B, C, as they all involve point-to-multipoint communication supported by multicast.

NEW QUESTION # 176
Based on IGMP snooping, IGMP snooping proxy enables a switch to act as a substitute for an upstream Layer
3 device to send IGMP Query messages to downstream hosts, and also to act as a substitute for downstream hosts to send IGMP Report/Leave messages to an upstream device. As such, this function conserves bandwidth between the upstream device and the local device.

A. FALSE
B. TRUE

Answer: B

Explanation:
GMP Snooping Proxy
* IGMP snooping proxy allows the switch to substitute for upstream Layer 3 devices and downstream hosts, reducing unnecessary bandwidth consumption by consolidating IGMP messages.
HCIP-Datacom-Core Reference
* The IGMP snooping proxy functionality is described in multicast optimization and IGMP configuration chapters

NEW QUESTION # 177
In IPv6, interface IDs can be manually configured, automatically generated by the system, or generated based on the IEEE EUI-64 standard.

A. FALSE
B. TRUE

Answer: B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Interface ID in IPv6:
* The interface ID is the last 64 bits of an IPv6 address, and it uniquely identifies an interface within a subnet.
* It can be generated in three ways:
* Manually Configured: Explicitly assigned by an administrator.
* System-Generated: The operating system assigns a random or pseudo-random value.
* EUI-64 Standard: Generated based on the MAC address of the interface.
* Correct Statement:
* IPv6 supports all three methods for generating interface IDs.
References:
* HCIA-Datacom Study Guide, Chapter: IPv6 Address Structure
* Huawei IPv6 Address Generation Methods
Let me continue with the next batch of questions!

NEW QUESTION # 178
......

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