ccna commands

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OSI seven-layer model Application LayerPresentation LayerSession LayerTransport Layer Core LayerNetwork Layer aggregation LayerData Link Layer Access layerPhysical LayerFirst, the physical layer1. Transmission unit: bit bitstream2. Device NIC,

Switch port configurationA LAN switch is an intermediary device that provides interconnection for each segment of a network. Therefore, the physical interface on the switch does not have an IP address. The physical interfaces on the routers are

The main learning is the Cisco Internetwork Operating System (IOS) software and the configuration files for routers and switches. This includes accessing and using the IOS CLI mode and configuration process, as well as understanding the meaning and

1. Static route with one jump: -----------------------R1---------------------------- R1 (config) #ip Route 2.2.2.0 255.255.255.0 12.1.1.2 R1 (config) #ip Route 23.1.1.0 255.255.255.0 12.1.1.2 R1 (config) #ip Route 3.3.3.0 255.255.255.0 12.1.1.2

Concept: 1. Neighbor table: The address of the direct-attached router and the interface to which it is connected 2. Topology table: A. Routing Status: P (passive) a (activity) B. Feasible distance (FD): Minimum metric to destination (metric) C.

CentOS common file operation commands and centos commandsSummary of common CentOS file operation commands I can say that I am a newbie in linux, and I often forget some commands, especially some operations on files. I often need to read the previous notes, today, I posted the "common file operation commands for CentOS"

Common commands for Linux enterprises and Common commands for linux Enterprises Common Linux Enterprise commands Command Function Description Online query and help commands (2) Man View Command help, command dictionary, more complex info, but not commonly used. Help View the

Analysis of commands in AngularJS and AngularJS commands Directive is the most important part of all AngularJS applications. Although AngularJS already provides a rich set of commands, you often need to create application-specific commands. Speaking of AngularJS, we first came up with two-way data binding and command s

Authoritative guide to Common commands in Linux and Common commands in linux 1 online query and help commands (2)1. manman [Option] [command]: View Command help, command dictionary, more complex info, but not commonly used. # Man cd-A: displays all the manual pages, not just the first one.-F only displays the command function, not the detailed description file, w

Php executes External commands in linux and phplinux External commands Directory:1. Introduction to calling external commands in PHPIi. Security IssuesIii. TimeoutIv. Problems with running commands in the linux environment in PHP1. Introduction to calling external commands i

Linux built-in commands and linux creation commandsBuilt-in commands Built-in commands are included in the Bash tool set. This mainly takes into account the execution efficiency issue-the built-in commands will be executed faster than the external commands, external

ThumbInstruction Set The thumb command can be seen as a subset of arm commands in the form of compression. It is proposed for the code density [1] and has a 16-bit code density. Thumb is not a complete architecture and cannot expect the processing program to execute only thumb instructions rather than arm instruction sets. Therefore, the thumb command only needs to support general functions. If necessary, you can use a complete arm instruction set. F

I. Differentiate the arm instruction set from the thumb Instruction Set first.The thumb command can be seen as a subset of arm commands in the form of compression. It is proposed for the code density problem. It has 16-bit code density, but it is not as efficient as arm commands. thumb is not a complete architecture. It cannot expect processing to only execute thumb instructions, but does not support arm in

In the previous sections, we have divided Linux commands into several parts based on their functions in the system. However, there are still some commands that are difficult to classify, but learning them is the same In the previous sections, we have divided Linux commands into several parts based on their functions in the system. However, there are still some

In-depth introduction to the use of custom commands in AngularJS and the use of custom commands in angularjs AngularJS custom commands are your own commands, plus native core functions that are run when the compiler compiles the DOM. This may be hard to understand. Now, suppose we want to reuse some specific code on di

Interview Questions: common linux commands and common linux commands Command for displaying directories and files Ls: Command Used to view all folders. Dir: command Tree used to display the specified folder and Directory: list the directory content in a Tree chart Du: displays the directory or file size. Modify directory, file permissions, owner, and array commands