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| Section | Weight | Objectives |
|---|---|---|
| Routing and Traffic Control | 10% | - Routing policy and filtering - Route import and redistribution - Policy-based routing |
| Network Service and Management | 5% | - Network management and monitoring - DHCP and DNS services |
| WLAN Basics | 2% | - WLAN deployment and optimization - WLAN technology principles |
| Network Reliability | 7% | - Device redundancy and link backup - VRRP protocol - BFD technology |
| Ethernet Switching Technologies | 7% | - Spanning Tree Protocol - Link aggregation and stack technology - VLAN principles and configuration |
| Routing Basics | 3% | - Routing table composition and selection rules - Routing concepts and classification |
| Network Security | 8% | - Attack defense and security policy - ACL and packet filtering - AAA authentication |
| IPv6 Technologies | 3% | - IPv6 address structure and configuration - IPv6 routing protocols |
| BGP Fundamentals | 17% | - BGP route attributes and selection - BGP characteristics and working principles - BGP configuration and policy application |
| Network Solutions and Design | 5% | - Typical network architecture and solution - Enterprise network design principles |
| Multicast Technologies | 9% | - Multicast basic concepts - PIM protocol - IGMP protocol |
| IS-IS Fundamentals | 8% | - IS-IS protocol principles - IS-IS configuration and deployment |
| OSPF Fundamentals | 16% | - OSPF configuration and optimization - OSPF principles and operation mechanisms - OSPF special applications and troubleshooting |
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NEW QUESTION # 273
Drag and Drop Question
On an STP network, the root bridge, root port, and designated port are elected in sequence. The election rules of these ports are different. List the steps for electing the root port in sequence.
Answer:
Explanation:
Explanation:
The sequence of steps for electing the root port in an STP (Spanning Tree Protocol) network is as follows:
Bridge ID Comparison: The Bridge ID (BID) is compared between the bridges in the network. A smaller value indicates a higher priority, meaning the bridge with the lowest Bridge ID is elected as the root bridge.
RPC (Root Path Cost) Comparison: The path cost to reach the root bridge is calculated. The router with the lowest Root Path Cost (RPC) to the root bridge will have a higher priority for the election of the root port.
Peer BID Comparison: If there is a tie in the Root Path Cost, the Peer BID is compared. A smaller Peer BID indicates a higher priority. This step ensures that if two routers have the same RPC, the one with the lower Peer Bridge ID wins.
Local BID Comparison: If there is still a tie, the Local BID is compared. A smaller Local BID indicates a higher priority. This final step ensures that the router with the lowest local identifier is selected.
Bridge ID Comparison:
The first step in electing the root port is comparing the Bridge IDs. The bridge with the lowest Bridge ID becomes the root bridge. The Bridge ID is made up of the bridge priority and MAC address. The root bridge is the center of the network for STP, and all other ports will calculate their paths based on this root.
NEW QUESTION # 274
Among the following BGP attributes, which ones are recognized and must be followed? (Multiple choice)
Answer: A,B
NEW QUESTION # 275
Which of the following descriptions of stateful inspection firewalls is correct?
Answer: B
NEW QUESTION # 276
If IGP routes want to become BGP routes, they can only pass the network command.
Answer: B
NEW QUESTION # 277
VLAN Pool can support multiple service VLANs at the same time mainly through one SSID, thus reducing the broadcast domain and reducing the waste of IP addresses.
Answer: B
NEW QUESTION # 278
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