【Answer】1. A 2. ABD 3. ABC 4. ABC 5. ABCD
【Winner】kita, nagu, Vien, thibay, hugu
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Hello, everyone!
Join the Community Learning week Network Routing&Switching Ethernet Switching Basics!
Network class learning time of this phase: August 16th – August 20th.
Answer time of this class: August 18th, 8 AM - August 19th, 4 PM (UTC+0).
Class topic
Post 1. STP Background
STP is used to prevent loops in the LAN. The switching devices running STP discover loops on the network by exchanging information with one another and block certain interfaces to cut off loops. Along with the growth of the LAN scale, STP has become an important protocol for the LAN...More
Post 2. BPDU Format
A BPDU is encapsulated into an Ethernet frame. In an Ethernet frame, the destination MAC address is the multicast MAC address 01-80-C2-00-00-00; the value of the Length/Type field is the length of MAC data; in the LLC header, as defined in the IEEE standard, the values of DSAP and SSAP are 0x42 and the value of Control is 0x03; the BPDU header follows the LLC header...More
Post 3. Two Types of Measurements
The spanning tree is calculated based on two types of measurements: ID and path cost...More
Post 4. Three Elements
There are generally three elements used when a ring topology is to be trimmed into a tree topology...More
Post 5. Four Comparison Principles
STP has four comparison principles that form a BPDU priority vector...More
Class Questions
After attending this class, please answer the following questions and comment with the answers below this post.
1. Network loops may cause broadcast storms and MAC address table flapping. STP is a loop-breaking protocol on LANs.
A. True
B. False
2. (Multiple-Choices Question) What are the fields in the Payload part of a TCN BPDU?
A. Protocol Identifier
B. Protocol Version Identifier
C. Root Identifier
D. BPDU Type
3. (Multiple-Choices Question) What are the measurement criteria for spanning tree generation calculation?
A. BID
B. PID
C. Path cost
4. (Multiple-Choices Question) Which of the following are three elements of the STP network structure?
A. Root Bridge
B. Root Port
C. Designated Port
D. Blocked Port
5. (Multiple-Choices Question) Which of the following are STP election principles?
A. Smallest BID
B. Smallest root path cost
C. Smallest sender BID
D. Smallest PID
Hope you get good grades, come and enjoy this learning party! ![Network class - August 18th [Community Learning Week • Phase 5]-4090939-2](https://forum.huawei.com/community/static/nopack/UEditor/dialogs/emotion/images/tsj/t_0003.gif)
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