当前位置:网站首页>Yyds dry goods inventory OSI & tcp/ip
Yyds dry goods inventory OSI & tcp/ip
2022-07-06 04:29:00 【You0tech】
OSI : Open System Interconnection
The seventh floor : application layer ---> Network services for applications
The sixth floor : The presentation layer ---> Formatting Data 、 encryption 、 Decrypt
The fifth floor : The session layer ---> establish 、 maintain 、 Manage session connections
The fourth level : Transport layer ---> establish 、 maintain 、 Manage end-to-end connections
The third level : The network layer ---> IP Addressing and routing
The second floor : Data link layer ---> Control the communication between network layer and logistics layer
first floor : The physical layer ---> Bit streaming
- 1.
- 2.
- 3.
- 4.
- 5.
- 6.
- 7.
first floor : The physical layer
The physical layer : Specify the logistics medium 、 Ethernet cable 、 Optical fiber 、 electric current 、 voltage 、 Network card and other standards
- 1.
The second floor : Data link layer
Data link layer :MAC Address 、 Switch
- 1.
The third level : The network layer
The network layer : encapsulation IP Address 、 Router
- 1.
The fourth level : Transport layer
Transport layer : TCP or UDP Port number
- 1.
TCP/IP Model (tcp/ip Protocol stack )
A collection of many Internet protocols , Among them TCP and IP Mainly , The set of these protocols is called TCP/IP Protocol stack .
The fifth floor : application layer
The fourth level : Transport layer
The third level : The network layer
The second floor : Data link layer
first floor : The physical layer
- 1.
- 2.
- 3.
- 4.
- 5.
Packet structure
On the second floor :MAC + Three layers :IP Address + four layers :TCP、UDP port + high-level :DATA
Application data + Transport layer : Data segment
Application data + Transport layer + The network layer : Data packets
Application data + Transport layer + The network layer + Data link layer : Data frame
Application data + Transport layer + The network layer + Data link layer + The physical layer : Data flow ( Bit stream )
TCP UDP
- TCP UDP Belongs to the transport layer
Common port numbers
DNS: UDP 53 TCP 53
DHCP: UDP 67 68
FTP: TCP 20 21
Telnet: TCP 23
HTTP: TCP 80
Telnet: TCP 23
HTTPs: TCP 443
RDP: TCP 3389
TFTP: UDP 69
- 1.
- 2.
- 3.
- 4.
- 5.
- 6.
- 7.
- 8.
- 9.
边栏推荐
- 牛顿插值法
- 关于进程、线程、协程、同步、异步、阻塞、非阻塞、并发、并行、串行的理解
- Fedora/rehl installation semanage
- Introduction to hashtable
- 2327. 知道秘密的人数(递推)
- 2/13 review Backpack + monotonic queue variant
- English Vocabulary - life scene memory method
- cdc 能全量拉去oracle 表嘛
- 729. My schedule I (set or dynamic open point segment tree)
- Execution order of scripts bound to game objects
猜你喜欢
VNCTF2022 WriteUp
关于进程、线程、协程、同步、异步、阻塞、非阻塞、并发、并行、串行的理解
How to realize automatic playback of H5 video
CertBot 更新证书失败解决
MySQL learning record 13 database connection pool, pooling technology, DBCP, c3p0
[network] channel attention network and spatial attention network
查询mysql数据库中各表记录数大小
1291_Xshell日志中增加时间戳的功能
Slow SQL fetching and analysis of MySQL database
10個 Istio 流量管理 最常用的例子,你知道幾個?
随机推荐
Global and Chinese markets for otolaryngology devices 2022-2028: Research Report on technology, participants, trends, market size and share
Recommendation system (IX) PNN model (product based neural networks)
Sentinel sliding window traffic statistics
hashlimit速率控制
P2102 floor tile laying (DFS & greed)
IDEA编译JSP页面生成的class文件路径
Mysql database storage engine
2/12 didn't learn anything
JVM garbage collector concept
Hashlimit rate control
Global and Chinese market of rubber wheel wedges 2022-2028: Research Report on technology, participants, trends, market size and share
Recommendation | recommendation of 9 psychotherapy books
Is the mode of education together - on campus + off campus reliable
食品行业仓储条码管理系统解决方案
2328. Number of incremental paths in the grid graph (memory search)
I'd like to ask about the current MySQL CDC design. In the full volume phase, if a chunk's binlog backfill phase,
Implementation of knowledge consolidation source code 1: epoll implementation of TCP server
【HBZ分享】ArrayList的增删慢查询快的原因
. Net interprocess communication
Easyrecovery reliable and toll free data recovery computer software