[20].childnodes[0] = = = Document.childnodes[1].childnodes[2].childnodes[20].firstchild//trueDom.lastchild; Returns the last child node = = = Dom.childnodes[Dom.childnodes.length-1];dom.nextsibling; Return to the next sibling node, dom.nextSibling.nextSibling can also playdom.previoussibling; Returns to the previous sibling node,Dom.attributes; Returns an array of properties for this nodeDom.nodename; Returns the node name of the node stringDom.nodevalue; Returns the node value of the node strin
skin, turns, "cat5" on the skin, 5 categories on the box, 305 meters/box, 100-500 RMB/box (meters per segment, connected with 4 relay devices, up to meters)
Wiring sequence: Normal: White orange white green blue white blue green white Brown1 2 3 4 5 6 7 8Consortium: white green white orange brown white brown orange white blue1 2 3 4 5 6 7 8STP: similar to UTP, external aluminum foil, apple, and IBM network products require STP twisted pair wires for high speed and high price.(2) coaxial cable:
Crass Introduction
Crass is a collection of crage and assage tools. Crage is a game resource extraction generator extended using the Cui plug-in, while assage is a game resource encapsulation program extended using the AuI plug-in.You can use the Cui or AuI plug-in to extract or encapsulate the package file corresponding to the plug-in.
In addition, the document contains detailed information about each Cui
Simple configuration of leased line router, leased line RouterA router is a bridge between computer networks. It can connect different networks, select data transmission paths, and block illegal access. Router configuration is not easy for beginners. There are many vro configuration parameters. This document uses Cisco2500 as an example to introduce the general configuration and simple debugging of the leased line router.
1. hardware structure
Cisco2500 includes one Ethernet port (
say you're using C + +, so you can also use the editor's highlight feature. such as Gedit, Kate, KWrite and so on. Or use a fully functional IDE like Geany, CodeLite, Codeblocks, and so on.However, your first program only needs to be done quickly with a text editor.As follows:#include Class Simple:public Wxframe{PublicSimple (const wxstring title): Wxframe (NULL, Wxid_any, title, Wxdefaultposition, Wxsize (250, 150)){Centre ();}};Class Myapp:public Wxapp{PublicBOOL OnInit (){Simple *simple = ne
Ng-router is a route developed and maintained by the ANGULARJS teamUi-router is a more powerful, ng-router-capable route provided by third partiesReference: Https://github.com/angular-ui/ui-router - ui-view>div> ui-sref="state1" >state 1A > ui-sref="State2" >state 2a> partials/state1.html -H1>State 1H1>HR/>aUi-sref= "State1.list">Show Lista>DivUi-view>Div>partials/state2.html -H1>State 2H1>HR/>
breakpoint debugging, based on chromium Real-time previews, and more. second, with the previous numerous Apicloud compared to the development tools, Apicloud Studio 2 what are the aspects of the upgrade? the core role of a development tool is to facilitate the coding and debugging of developers, so the function of the upgrade is mainly reflected in these two aspects. Apicloud is committed to simplifying mobile application development, an efficient, convenient and powerful development tool that
and run the make command$ compile samples$ CD samples/$ makeAfter the make process finishes, get inside each sample sub directory and there should is an executable file the can is R Un right away-see the demo.7. Compile Your first programAfter you do with the demo programs, its time-to-write your own program and compile it. Again it is quite easy.It is assumed, that's coding in C + + and for that, can use any good editor with syntax highlighting feature. For example Gedit, Kate, KWrite would do
5 cents to build your own Throwing Star LAN Tap
Cause:
The WEB "Wang" was boring to write PHP code at home on weekends. I was thinking about something interesting. I saw Throwing Star LAN Tap, but I didn't have time to play it, eager to open a treasure to get a back, a search will be dumb, a 1, 2 hundred dollars. When I buy a pair of trousers as silk, I think 100 yuan is a little too much. How can I spend money. It was quite easy to get one by yourself.
Analysis:
First, let's look at our analysi
-density Port
If the internal and external density of the rack is too high, some traditional RJ45 Jumpers may also cause difficulties in plugging. Therefore, flexible and fast jumper control can greatly save user management time.
Countermeasure: Blade patch cord
Another industrial innovation recommended by US Simon to support high-density trends is the BladePatch patch cord. The plug of this jumper has a unique positioning lock design, locking and u
router is RJ45 port, which is used to connect the network cable.
The WLAN port on the wireless dial-up router is port, which is used to connect to the telephone line.
Through the above method, we can quickly identify the two different devices.
2. Functional Comparison
In terms of functions, both devices have wireless and routing functions, and both have Ethernet ports, enabling hybrid wired and wireless networking.
However, t
common home wiring, others are selected by the user. The details are as follows:
(1) data port entry (SNBT-SJ6 )()
Six interfaces, five types of RJ45 interfaces, and no cabling module. Complies with ISO/IEC11801, TIA/EIA568A or 568B standards. Cables for information points that provide online services are allocated to the six data modules of the functional component. Then, use the network jumper to connect the switch ports of the Self-small switch o
The long-side cable management ring, also known as the cable holder, is used to hold the horizontal twisted pair cable and the large pair of twisted pair cable in the cabinet. It has three functions.
1. In terms of the principle of electronic product design, cables on cable connectors such as RJ45 modules should not exert tension on the connectors to prevent poor contact caused by excessive force connections. The twisted pair has a certain weight, an
adjust.
There are two minor issues during the IBM R51 connection:
◆ Find other nearby wireless networks, which means we need to configure a security mechanism for our home router. For example, you can modify the login username and password, and encrypt WAP files to prevent other users from obtaining and using resources.
◆ Log on to the "192.168.0.1" interface for a long time. In 3-5 minutes, the wireless network connection experiences a signal decline. The signal drops to 11 Mbps, and the conne
convenient to adjust.
There are two minor issues during the IBM R51 connection:
◆ Find other nearby wireless networks, which means we need to configure a security mechanism for our home router. For example, you can modify the login username and password, and encrypt WAP files to prevent other users from obtaining and using resources.
◆ Log on to the "192.168.0.1" interface for a long time. In 3-5 minutes, the wireless network connection experiences a signal decline. The signal drops to 11 Mbps,
During the experiment, we usually use the serial port to connect two routers. But what should I do if my serial port is used up? You can also use the aux port to connect two vrouters using PPP.
We know that a router generally has an aux port. There are two interface types: RJ45 (for example, 25 series and 26 series ), another type is DB25 (for example, 45 Series and 7000 Series). aux is a DTE device, so two DTE devices need to be connected using a rol
. The uplink interface is the PON interface, which is connected to the interface board of the OLT device through a passive splitter. the downlink is through 1-32 RJ45 ports of Mbit/s or even Gbit/s, connect different data devices, such as vswitches, broadband routers, computers, IP phones, and set-top boxes, to achieve fast point-to-point deployment.
4. networking in the home
Generally, most FTTH-to-user ONU devices provide at least four M
(config-r-mc) # Return end to global ModeStep 5 Router # copy running-config startup-config save ConfigurationNote that the auto-sync standard command does not synchronize boot variables.The configuration is as follows:Router (config) # redundancyRouter (config-r) # main-cpuRouter (config-r-mc) # auto-sync standardRouter (config-r-mc) # auto-sync bootvarRouter (config-r-mc) # endRouter # copy running-config startup-configNote that manual synchronization of a parameter causes the original defaul
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