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| Section | Weight | Objectives |
|---|---|---|
| Routing and Traffic Control | 10% | - Route import and redistribution - Routing policy and filtering - Policy-based routing |
| Network Reliability | 7% | - VRRP protocol - BFD technology - Device redundancy and link backup |
| Network Security | 8% | - AAA authentication - ACL and packet filtering - Attack defense and security policy |
| 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 |
| Multicast Technologies | 9% | - Multicast basic concepts - IGMP protocol - PIM protocol |
| IS-IS Fundamentals | 8% | - IS-IS protocol principles - IS-IS configuration and deployment |
| IPv6 Technologies | 3% | - IPv6 routing protocols - IPv6 address structure and configuration |
| Network Solutions and Design | 5% | - Typical network architecture and solution - Enterprise network design principles |
| OSPF Fundamentals | 16% | - OSPF configuration and optimization - OSPF special applications and troubleshooting - OSPF principles and operation mechanisms |
| BGP Fundamentals | 17% | - BGP configuration and policy application - BGP route attributes and selection - BGP characteristics and working principles |
| Network Service and Management | 5% | - DHCP and DNS services - Network management and monitoring |
| WLAN Basics | 2% | - WLAN technology principles - WLAN deployment and optimization |
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NEW QUESTION # 101
By executing the 0 command, users on different ports in the same VLAN can be completely isolated at Layer 2 and Layer 3 and unable to communicate.
Answer:
Explanation:
port-isolate mode all
NEW QUESTION # 102
After receiving the service packet, the modular switch first processes it through the uplink interface board, then processes it through the downlink interface board, and finally sends it out through the interface.
Answer: B
NEW QUESTION # 103
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.
* HCIP-Datacom-Core Technology Training Material (STP Concepts and Election Process).
RPC (Root Path Cost) Comparison:Once the root bridge is selected, the network needs to determine the best path to the root. Each port on a non-root bridge will calculate the Root Path Cost (RPC), which is the cumulative cost of reaching the root bridge from that port. The root port is the one that has the lowest RPC, meaning it provides the best path to the root bridge.
Reference: HCIP-Datacom-Core Technology Training Material (STP Path Selection).
Peer BID Comparison:If multiple paths have the same Root Path Cost, the next step is to compare the Peer Bridge IDs. The bridge with the lowest Peer BID is chosen as the root port. This ensures a tie-breaking mechanism based on the neighbor's identifier.
Reference: HCIP-Datacom-Core Technology Training Material (STP Election Process).
Local BID Comparison:If there is still a tie after comparing the Peer Bridge IDs, the Local Bridge ID is compared. A smaller Local BID indicates a higher priority, and the port with the lower Local BID will be selected as the root port.
Reference: HCIP-Datacom-Core Technology Training Material (STP Local Port Selection).
NEW QUESTION # 104
On an OSPF network, if two routers with the same router ID run in different areas and one of the routers is an ASBR, LSA flapping occurs.
Answer: B
Explanation:
Understanding Router ID and Its Role in OSPF:
In OSPF, the Router ID uniquely identifies a router within the OSPF domain. If two routers are configured with the same Router ID, it can lead to issues such as LSA conflicts and flapping. This is because the Router ID is used as a key in OSPF operations, including LSA generation and database synchronization.
NEW QUESTION # 105
Which of the following parameters are not mandatory during the configuration of a BGP peer?
Answer: A,C
Explanation:
The mandatory parameters for BGP peer configuration are the peer IP address (peer ip-address) and AS number (as-number). A password is optional for MD5 authentication, and a description is an optional comment for reference. These are not required for establishing the peer relationship .
NEW QUESTION # 106
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