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| Section | Weight | Objectives |
|---|---|---|
| Network O&M | 7% | - Performance optimization and capacity planning - Network monitoring and management tools |
| Advanced IGP Features | 17% | - IGP route selection and control - IS-IS advanced features and convergence - OSPF advanced features and optimization |
| Network Cutover and Migration | 7% | - Service switchover and verification - Migration strategies and risk control |
| Network Troubleshooting | 10% | - Fault diagnosis and analysis methods - Troubleshooting routing and switching issues |
| Advanced Ethernet Technologies | 10% | - Ethernet OAM and protection mechanisms - VLAN stacking and QinQ - Advanced link aggregation and reliability |
| IPv6 Routing | 20% | - IPv6 addressing and transition technologies - OSPFv3 and IS-IS for IPv6 - BGP4+ and IPv6 route deployment |
| Advanced BGP Features | 10% | - BGP path control and filtering - Route reflectors and confederations - BGP route attributes and policies |
| MPLS Technologies | 19% | - MPLS protection and fast reroute - MPLS basics and label distribution - MPLS VPN and traffic engineering |
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NEW QUESTION # 128
As shown in the figure, OSPF is deployed in a campus, and Area 1 is deployed as an NSSA are a. In the case of missing header, R2 will automatically generate a missing header route of Type 7 LSA and flood it in the NSSA area
Answer: A
NEW QUESTION # 129
In the IS-IS IPv6 network shown in the figure, the interfaces of R1 and R2 both have two IPv6 addresses. Since the prefix lengths of the IPv6 addresses of R1 and R2 are different, they cannot establish a neighbor relationship.
Answer: A
NEW QUESTION # 130
When configuring port security on a switch, the administrator also enables static MAC address flapping detection . If static MAC address flapping occurs , the switch takes the configured action to protect the interface.
Match the names of interface security protection actions with corresponding operations.
Answer:
Explanation:
Explanation:
* Restrict # Discards the packets that trigger static MAC address flapping and reports an alarm.
* Protect # Discards the packets that trigger static MAC address flapping only and does not report an alarm.
* Shutdown # Sets the interface state to error-down and reports an alarm.
Comprehensive and Detailed In-Depth Explanation:
1. Understanding Port Security Modes
Port security is used to control access on a switch port based on MAC addresses. If a MAC address violation occurs (e.g., static MAC address flapping), the switch can take different actions based on the configured security mode .
Security Mode
Description
Restrict
Drops the violating packets and logs the violation by generating an alarm.
Protect
Drops the violating packets but does not generate an alarm .
Shutdown
Places the interface into error-disabled (error-down) state and logs an alarm.
2. Matching Each Security Mode with Its Operation
* Protect Mode :
* The switch drops the packets from the unauthorized MAC address .
* No alarm is generated or logged.
* Correct Mapping: " Discards the packets that trigger static MAC address flapping only and does not report an alarm. "
* Restrict Mode :
* The switch drops the packets from the unauthorized MAC address .
* An alarm is generated and logged in the system.
* Correct Mapping: " Discards the packets that trigger static MAC address flapping and reports an alarm. "
* Shutdown Mode :
* The switch shuts down the interface by placing it into the error-down state .
* An alarm is generated and logged.
* Correct Mapping: " Sets the interface state to error-down and reports an alarm. "
NEW QUESTION # 131
The business routes of an enterprise are transmitted in the network, and part of the configuration of PE1 and PE2 is shown in the figure. At this time, CE1 adds a new business network segment and announces it to Area 1 of OSPF 10.
In this scenario, which type of LSA will CE2 receive, which will contain the service network segment newly announced by CE1?
Answer: C
NEW QUESTION # 132
How to view log information? (Multiple choice)
Answer: A,B,D
NEW QUESTION # 133
......
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