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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Solution | 2% | - Integrated network design scenarios |
| Topic 2: BGP | 17% | - BGP path selection - BGP policy and attributes |
| Topic 3: Switching Technologies | 7% | - VLAN and STP fundamentals |
| Topic 4: Network Reliability | 8% | - Redundancy and failover mechanisms |
| Topic 5: IPv6 | 3% | - IPv6 addressing and routing |
| Topic 6: Multicast | 9% | - IGMP and PIM concepts |
| Topic 7: Network Service and Management | 2% | - Network management basics |
| Topic 8: OSPF | 16% | - OSPF core concepts - OSPF areas and LSDB |
| Topic 9: Large-scale WLAN Architecture | 6% | - Enterprise WLAN deployment basics |
| Topic 10: Routing Fundamentals | 3% | - Network basics and routing principles |
| Topic 11: Routing and Traffic Control | 10% | - Policy-based routing - Traffic engineering basics |
| Topic 12: IS-IS | 8% | - IS-IS protocol fundamentals |
| Topic 13: Network Security | 9% | - ACL and basic security mechanisms |
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NEW QUESTION # 183
An OSPF AS-external LSA describes a route to an AS external network. When the field in the LSA is 0.0.0.0, the traffic destined for the external network is sent to the ASBR that imports this external route. (Enter the acronym in uppercase.)
Answer:
Explanation:
NSSA
Explanation:
An OSPF AS-external LSA is used to describe routes to networks that are external to the OSPF Autonomous System (AS). This external route information is typically imported into OSPF by an Autonomous System Boundary Router (ASBR).
If the Forwarding Address field in the AS-external LSA is set to 0.0.0.0, this indicates that traffic destined for the external network should be forwarded directly to the ASBR that advertised the external route.
The specific context mentioned here relates to the Not-So-Stubby Area (NSSA), a type of OSPF area designed to handle AS-external routes in a more controlled way. In NSSAs:
* Type 7 LSAs are used to describe AS-external routes.
* The ASBR within the NSSA converts the Type 7 LSA to a Type 5 LSA before advertising it to the backbone area.
Hence, the correct acronym for the described functionality is NSSA.
References:
* Huawei HCIA-Datacom Study Guide, Chapter on "OSPF Area Types".
* RFC 3101 - OSPF Not-So-Stubby Area (NSSA) Option.
NEW QUESTION # 184
What parameters can a DHCP6 server assign to a DHCPv6 client?
Answer: A,B,D
Explanation:
Understanding DHCPv6:
DHCPv6 (Dynamic Host Configuration Protocol for IPv6) is used to assign configuration parameters to IPv6 clients.
It supports bothstatefulandstatelessmodes:
Stateful: Assigns IPv6 addresses and other configuration parameters.
Stateless: Assigns only configuration parameters (e.g., DNS server) without providing IPv6 addresses.
HCIP-Datacom-Core Technology Training Material (IPv6 Address Configuration and DHCPv6).
Analysis of Parameters:
A: Gateway address:
False. DHCPv6 does not assign the default gateway. Instead, the default gateway is advertised by routers usingRouter Advertisement (RA)messages in IPv6.
B: DNS server address:
True. DHCPv6 can assign the IPv6 address of DNS servers to the client.
C: IPv6 address/prefix:
True. In stateful mode, DHCPv6 assigns IPv6 addresses and prefixes to clients.
D: SNTP server address:
True. DHCPv6 can assign the address of an SNTP (Simple Network Time Protocol) server to synchronize time on the client.
Reference:HCIP-Datacom-Core Technology Training Material (DHCPv6 Configuration and Features).
Conclusion:
The correct parameters that a DHCPv6 server can assign to a client are:B. DNS server address, C. IPv6 address/prefix, D. SNTP server address.
NEW QUESTION # 185
As shown in the figure, SW1 and SW2 have just run RSTP and are now performing spanning tree calculation.
So, which of the following descriptions about the port synchronization process in the P/A mechanism are correct? (Multiple choice)
Answer: A,B,D
NEW QUESTION # 186
RTA is the source DR router, and RIB is the RP router. The multicast source sends group blessing data to RTA, but the group blessing source Source registered with it through the PIM Register message cannot be seen on the RIB. The possible reasons are as follows: (Multiple choice)
Answer: A,B,C,D
NEW QUESTION # 187
The AS_Path attribute is an important BGP attribute used for route selection. Which of the following statements are true about this attribute?
Answer: A,C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* AS_Path is a well-known mandatory attribute (not discretionary).
* AS_Path characteristics:
* A. TRUE # When advertising to IBGP peers, AS_Path remains unchanged to prevent routing loops.
* B. TRUE # BGP uses AS_Path to detect loops (if a router sees its own AS in the path, it rejects the route).
* C. FALSE # AS_Path is well-known mandatory, not discretionary.
* D. TRUE # BGP ignores AS_Confed_Sequence and AS_Confed_Set when calculating the AS_Path length.
# Reference: Huawei HCIA-Datacom Study Guide, BGP Path Attributes and Loop Prevention.
NEW QUESTION # 188
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