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| Section | Weight | Objectives |
|---|---|---|
| Network Service and Management | 2% | - Network management basics |
| Routing and Traffic Control | 10% | - Policy-based routing - Traffic engineering basics |
| OSPF | 16% | - OSPF areas and LSDB - OSPF core concepts |
| IS-IS | 8% | - IS-IS protocol fundamentals |
| Network Security | 9% | - ACL and basic security mechanisms |
| Large-scale WLAN Architecture | 6% | - Enterprise WLAN deployment basics |
| Routing Fundamentals | 3% | - Network basics and routing principles |
| Network Solution | 2% | - Integrated network design scenarios |
| IPv6 | 3% | - IPv6 addressing and routing |
| BGP | 17% | - BGP path selection - BGP policy and attributes |
| Switching Technologies | 7% | - VLAN and STP fundamentals |
| Multicast | 9% | - IGMP and PIM concepts |
| Network Reliability | 8% | - Redundancy and failover mechanisms |
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NEW QUESTION # 305
Which of the following types does IS-IS PDU include? (Multiple choice)
Answer: A,B,C,D
NEW QUESTION # 306
OSPF has multiple types of routes with varying priorities. Which of the following types of routes has the lowest priority when they have the same prefix?
Answer: A
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
OSPF Route Preference Hierarchy:
OSPF uses the following preference order for route types when the prefix is the same:
Intra-area routes (D): Routes within the same OSPF area have the highest priority.
Inter-area routes (B): Routes between different OSPF areas are preferred after intra-area routes.
Type 1 external routes (A): External routes redistributed into OSPF, considering the internal OSPF cost to the ASBR.
Type 2 external routes (C): External routes redistributed into OSPF, ignoring the internal OSPF cost to the ASBR.
Lowest Priority:
Type 2 external routes (C) are given the lowest priority because they represent external information that does not consider internal OSPF costs.
References:
HCIA-Datacom Study Guide, Chapter: OSPF Route Preference
Huawei OSPF Routing Table Selection Rules
NEW QUESTION # 307
Which of the following statements about BFD operating modes are true?
Answer: B,C,D
Explanation:
In asynchronous mode, BFD control packets are exchanged periodically to detect faults.
In demand mode, once the session is established, BFD stops sending periodic control packets and relies on external mechanisms to verify connectivity.
Asynchronous mode is the most commonly used mode. However, the Echo function is supported in asynchronous mode, making Option B incorrect .
NEW QUESTION # 308
Which of the following states represents the established connection between peers in BGP?
Answer: C
NEW QUESTION # 309
Match the following IPv4 multicast protocols with the corresponding functions.
Answer:
Explanation:
Explanation:
IGMP:Manages IPv4 multicast group members and runs on the multicast network's last segment (that is, the network segment where a Layer 3 network device is connected to user hosts).
PIM:Sends multicast data over the network to the multicast device that is connected to group members that have requested the multicast data, implementing multicast data forwarding based on routes.
IGMP Snooping:Manages and controls the forwarding of multicast data packets to effectively suppress the flooding of multicast data packets on the Layer 2 network.
IGMP (Internet Group Management Protocol):
IGMP is used by hosts and adjacent multicast routers to establish and maintain multicast group memberships on a local subnet.
It allows a host to inform a multicast router of its desire to receive multicast traffic for a specific group.
It operates at Layer 3 and runs on the last segment of the network.
HCIP-Datacom-Core Technology Training Material (Multicast Fundamentals).
PIM (Protocol Independent Multicast):
PIM is a routing protocol designed for efficient routing of IP multicast traffic. It determines the paths over which multicast packets should be forwarded.
PIM is "protocol-independent" because it uses the underlying unicast routing table for RPF (Reverse Path Forwarding) checks.
It is responsible for distributing multicast data throughout the network.
Reference:HCIP-Datacom-Core Technology Training Material (Multicast Routing Protocols).
IGMP Snooping:
IGMP Snooping operates at Layer 2 and monitors IGMP traffic between hosts and routers.
It prevents multicast flooding by allowing a switch to forward multicast packets only to the ports that have joined specific multicast groups.
This significantly enhances efficiency in Layer 2 networks with multicast traffic.
Reference:HCIP-Datacom-Core Technology Training Material (IGMP Snooping Concepts).
NEW QUESTION # 310
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