rj45 connection diagram

Author: it.com. cnhttp: // www.ccw.com.cn 19:26:19 I want to comment (0) Many people (including the author) think that 10 Base-T 10 m networks use four of the eight signal lines in the network cable, the 100 Base-t m uses all eight signal lines (or how fast ?). However, when the author recently used a 10 m direct connection method (switching between 1 and 3, 2 and 6, and shielding the other four lines) to connect the network cable, unexpectedly, it wa

. When the socket is closed, its host TCP sends a fin of its own. We point out in the diagram that this occurs when the application process calls close, but recognizes that when a UNIX process terminates either voluntarily (calling exit or returning from the main function) or involuntarily (receiving a signal to terminate this process), all open descriptors are closed. This also causes a fin to be emitted on any TCP connections that are still open. Fi

to turn off the client to server data transfer, the client enters the fin_wait_1 state.(2) Second wave: After receiving fin, the server sends an ACK to the client, confirming that the sequence number is received sequence number +1 (same as SYN, one fin occupies a serial number), and the server enters the close_wait state.(3) Third wave: The server sends a fin to shut down the server-to-client data transfer, and the server enters the Last_ack state.(4) The fourth wave: After the client receives

smaller. 4. the TCP status migration book P182 page provides a TCP status chart, which looks complicated because it contains two parts: Server Status migration and client status migration, from a certain point of view, this figure will be much clearer. The servers and clients here are not absolute. The clients that send data are the clients, and the servers that receive data are the servers. 4. 1. client application status transition diagram the clie

brand of motherboard do not have to read the manual plug the complex jumper. Where is the first pin of the jumper? 9, to learn how to jumper, we must first understand where the number of jumpers to start, this is actually very simple. On the motherboard (as with any board device), there will always be a thicker print frame on either end of the jumper, and the jumper should count from here. After finding the thicker print box, just follow the number of principles from left to right, top t

The switch in our impression is as a LAN node connected network equipment, in fact it also exists in the WAN, and has been a large number of applications, especially in telecommunications operators, ATM switches and now Fibre Channel switches, but we usually find it difficult to see such switches. However, this article is still mainly to our common LAN switch as an example to introduce all kinds of switch interface and connection mode.　　 LAN switch as

1. The reason why a bit is staggered when the CPU Address line is connected to the Nandflash Address line:A: The CPU sends an address corresponding to one byte of data, while the nandflash One address corresponds to two bytes of data, cpu Knowing which byte data you want to read, it sends the corresponding address to nandflash nandflash is 16 bit, therefore Nandflash always return every time 2 bytes of data, at this time by a CPU on-Chip Nandflash Controller will CPU the data that

It is estimated that many people will be confused by various types of table connections when they are learning SQL table connections, and now, with the diagram below, it is possible to visually differentiate tables from each other.Can be seen through the graphMulti-table queries are divided into internal and external connectionsThe outer joins are left-connected (either to the right join or to the outer join), to the

Diagram of vswitch interfaces and connection skillsIn our impression, a switch is a network device connected to a LAN node. In fact, it also exists in the Wide Area Network and is widely used, especially in telecom operators, ATM switches and fiber-channel switches, which we can hardly see at ordinary times. However, this article will introduce the interfaces and Connec