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| Section | Objectives |
|---|---|
| IPv6 | - IPv6 Fundamentals
|
| OSPF | - OSPF Fundamentals
|
| BGP | - BGP Technologies
|
| Multicast | - IP Multicast Technologies
|
| Routing Basics | - IP Routing Fundamentals
|
| Network Service and Management | - O&M Technologies
|
| Network Security | - Security Technologies
|
| Routing and Traffic Control | - Traffic Management
|
| IS-IS | - IS-IS Fundamentals
|
| Network Solutions | - Enterprise Network Solutions
|
| Ethernet Switching Technology | - Switching Fundamentals
|
| Network Reliability | - Reliability Technologies
|
| WLAN | - Wireless Networking
|
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NEW QUESTION # 173
Which of the following statements regarding different LSA types is false?
Answer: A
Explanation:
LS Ack (Link State Acknowledgment) packets are used to acknowledge received LSAs and do not contain complete LSA information. Instead, they contain only the headers of LSAs being acknowledged. This contrasts with LS Update packets, which carry full LSA details. The misunderstanding of LS Ack functionality makes this statement false .
NEW QUESTION # 174
By default, if no router ID is configured but multiple loopback interface addresses are configured, BGP selects the largest loopback interface address as the router ID.
Answer: A
Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* BGP Router ID Selection Rules:
* If a router ID is not manually configured:
* The largest loopback address is selected as the router ID.
* If no loopback interfaces exist, the largest active physical interface address is selected.
* Default Behavior:
* This ensures that a stable and unique router ID is chosen automatically, even without manual configuration.
References:
* HCIA-Datacom Study Guide, Chapter: BGP Router ID
* Huawei Routing Device Configuration
NEW QUESTION # 175
The 802.1X authentication system supports two authentication methods, EAP relay and EAP termination, to complete the authentication between the device and the authentication server. Which of the following descriptions about the two authentication methods are wrong? (Multiple choice)
Answer: A,C
NEW QUESTION # 176
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: D
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.
NEW QUESTION # 177
In VRRP networking, devices assume the Master and Backup roles after election.
Match the two roles with their working mechanisms.(Token is reusable)
Answer:
Explanation:
A screenshot of a computer Description automatically generated
Explanation of VRRP Roles and Their Functions:
InVRRP (Virtual Router Redundancy Protocol), devices are assigned roles as eitherMasterorBackupafter an election process. Each role has specific responsibilities to ensure the availability of the virtual IP address.
Matching Roles and Mechanisms:
Master:
Periodically send VRRP Advertisement packets.
The Master device sends advertisement packets to inform Backup devices that it is active.
Respond to an ARP request destined for a virtual IP address with an ARP reply carrying the virtual MAC address.
The Master device is responsible for responding to ARP requests for the virtual IP and forwarding traffic for it.
Backup:
Transition from Master to Backup immediately if a VRRP Advertisement packet with a higher priority is received.
A Backup device becomes Master only if the current Master stops sending advertisement packets or has a lower priority.
Discard IP packets destined for the virtual IP address.
Backup devices do not process traffic for the virtual IP address unless they become the Master.
NEW QUESTION # 178
......
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