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Huawei H12-821_V1.0 Exam Syllabus Topics:

SectionWeightObjectives
Routing Fundamentals3%- Network basics and routing principles
Multicast9%- IGMP and PIM concepts
BGP17%- BGP policy and attributes
- BGP path selection
Switching Technologies7%- VLAN and STP fundamentals
Large-scale WLAN Architecture6%- Enterprise WLAN deployment basics
OSPF16%- OSPF areas and LSDB
- OSPF core concepts
IPv63%- IPv6 addressing and routing
Network Solution2%- Integrated network design scenarios
Routing and Traffic Control10%- Traffic engineering basics
- Policy-based routing
IS-IS8%- IS-IS protocol fundamentals
Network Service and Management2%- Network management basics
Network Security9%- ACL and basic security mechanisms
Network Reliability8%- Redundancy and failover mechanisms

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q222-Q227):

NEW QUESTION # 222
When establishing an EBGP neighbor relationship in BGP, what is the default TTL value of the message?

Answer: C


NEW QUESTION # 223
The figure shows the VRRP status switchover events. Match these events with their sequence numbers.

Answer:

Explanation:

Explanation:
1 # A Startup message with a priority of 255 is received.
2 # A Startup message with a priority less than 255 is received.
3 # A Shutdown message is received.
4 # The Master_Down timer expires, an Advertisement packet with the priority of 0 is received, or a packet with a priority lower than the local priority is received.
5 # A packet with a priority higher than the local priority is received.
6 # A Shutdown message is received.
# Reference: Huawei HCIA-Datacom Study Guide, VRRP Status Transitions.


NEW QUESTION # 224
On an OSPF or IS-IS network, the filter-policy import command can be run on a router to filter out the LSAs forwarded by its neighbors.

Answer: B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding LSA Filtering in OSPF and IS-IS:
* The filter-policy command is used in OSPF and IS-IS to control which routing information is imported into the local routing table or advertised to other neighbors.
* However, it cannot filter LSAs forwarded by neighbors. In OSPF and IS-IS, LSAs are always forwarded unchanged within the area to ensure all routers have a consistent link-state database.
* Filtering only affects the routes that are installed into the local routing table or advertised to other areas or neighbors.
2. Why the Statement is False:
* LSAs are forwarded without being filtered. This ensures link-state protocols maintain the same network topology view across the network.
* The filter-policy import command only controls routes that are installed into the local routing table, not the forwarding of LSAs.
3. Summary:
* The statement is FALSE because LSAs cannot be filtered by filter-policy import.
:
Huawei HCIA-Datacom Study Guide, Chapter "OSPF Route Filtering."
RFC 2328: OSPF Version 2, LSA Propagation Rules.


NEW QUESTION # 225
L2TP does not provide security encryption. Therefore, other security measures, such as IPsec, are required to ensure the security of the entire tunnel for data transmission.

Answer: A

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. What is L2TP (Layer 2 Tunneling Protocol)?
L2TP is a tunneling protocol used to transport Layer 2 frames over IP networks.
It is commonly used to establish VPNs but does not provide built-in encryption or security for the transmitted data.
2. Why L2TP Requires Additional Security Measures:
Since L2TP does not encrypt traffic, it is vulnerable to eavesdropping and tampering.
To secure L2TP tunnels, it is often paired with IPsec, which provides strong encryption and authentication.
The combination of L2TP and IPsec is known asL2TP/IPsec.
3. Why the Statement is TRUE:
The statement accurately describes the limitation of L2TP (lack of encryption) and the need for additional security measures like IPsec.
Reference:
Huawei HCIA-Datacom Study Guide, Chapter "L2TP Tunnel Configuration and Security." RFC 2661: Layer Two Tunneling Protocol (L2TP).


NEW QUESTION # 226
The role of the business collaboration layer in the SDN architecture is to complete business deployment based on user intentions. OpenStack belongs to the business collaboration layer.

Answer: A


NEW QUESTION # 227
......

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