osi layers

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Which layer of the OSI is RPC, SQL, and NFS

Tags: POJ RMI computer program TCP/IP protocol for network efficiency NAL BBS First layer: Physical layer second layer: Data link layer 802.2, 802.3ATM, HDLC, FRAME RELAY Third layer: Network layer IP, IPX, ARP, APPLETALK,ICMP layer Fourth: Transport layer TCP, UDP, SPX RPC,SQL, NFS, X WINDOWS,ASP layer Sixth: Presentation layer ASCLL, PICT, TIFF,JPEG MIDI, MPEG layer Seventh: Application layer HTTP,FTP, SNMP, etc. https://www.nowcoder.com/questionTerminal/7cf6990ea2e345b6bc96d882944c4d6b T

Problems with PS Layers: resolution rollup for layers

A lot of beginners do not know much about PS, there is a layer problem and do not understand how to solve, I now share with you about the layer of solutions. Method/Step 1, the layer will suddenly disappear, do not know where to find? In fact, the window in the menu bar- layer can be found, you can also find F7 through the shortcut keys. 2, how to link layers and unlock the connection layer, the connection layer is mainly us

Knowledge summary of layers and view layers

describe the position of the layer on the z-axis.Practical Application of Zposition:In addition to moving and rotating layers in three-dimensional space, the most useful feature is to change the order in which layers are displayed.Self.greenView.layer.zPosition = 1.0f;You can use this setting to make the view appear before the view that is smaller than its zposition.In fact, there is no need to add too muc

Discuss the traditional and new layers, or the DDD Layers

The biggest problem with traditional layering is that it splits the relationship between the upper and lower layers, turns the relationship between them into simple interface calls, and turns it into full interface formalism. At the same time, it is ignored that the lower layer provides services for the upper layer, rather than independently. The services provided by the lower layer should be governed by the upper layer. Of course

In MVC, the issue of Message passing (bidirectional) between layers and layers

For example, how can the form data in C be passed to the M layer after the validation is done? The current use is to assemble the data into the corresponding domain object in action, and then pass the parameter to the model~ However, by doing so, the complex assembly process is undoubtedly given to the action developer, which makes the division of responsibilities between the scoring layers unreasonable, and the C and M

Machine Room reconstruction package diagram (from three layers + solids to three layers + physical + appearance + Factory + interface +sqlhelper)

When I first started contacting layer three, I only made two examples of login widgets. Drawing a simple package diagram, it can be said that the reconstruction of the back room left a lot of work (because the three-layer understanding of no depth, also did not understand their own things). However, the total owed is still. When the machine room is reconstructed, the problem arises. If only use three layer + entity, I can make, but, require refactoring can not only use three layer + entity, then

Ultra fractal tutorial Series 21-how to use layers 04-learn about opacity of Layers

If you observe"FractalProperties"Window"Layers"Panel, you will see two layers and Their thumbnail list.But when you watch yourFragmentYou can only see the display of the grayscale style layer.This is because the top layer is displayed in "normal" mode of 100%, which means that you can see any layer below it now.To check whether other layers are still in use, clic

Port OSI seven layer model data transfer

between a-B and the reliability of the connection4) package The data at the network layer and define the destination IP address and source IP address in front of the packaged data5) Reprocessing at the data link layer, the data mask after processing defines the target Mac and source MAC address6) Re-physical layer, eventually changing the data to machine and identification of the 10101 binary encoding, and then transmission on the network cable7) to the router to the data forwarding, in order t

"linux Network Management"osi model

Learn Linux network management, notes collation, promote memory.OSI (Open Systems Interconnection model) consists of seven layers, which are progressive from the application layer to the physical layer, respectively, and have different protocols and data processing methods.Application----layer-to-session-layer-to-layer-layer---------Data link layer----physicalData unit: ADPU PPDU SPDU TPDU message frame bitADPU: Application Protocol Data UnitPPDU: Pre

Network Programming basics OSI/RM

When talking about the network, we can't go without talking about the OSI reference model. Although the actual application of the OSI reference model is not significant, it is indeed helpful to understand the internal operation of the network protocol, it also provides a good reference for us to learn network protocols. In the real world, TCP/IP protocol stacks have been widely used. I have seen many times

Multiple layers of jquery's anonymous method and multiple layers of jquery's anonymous method

Multiple layers of jquery's anonymous method and multiple layers of jquery's anonymous method Anonymous method: (Function (x) {}) (3 ); Explanation: the first () is a method, and the second () is a parameter in the method. Purpose: The anonymous method is automatically executed in javascript. For example, the start method of jquery can be written as an anonymous method: (Function ($) {}) (jQuery); // T

Implement custom bullet box and mask layers and custom mask Layers

Implement custom bullet box and mask layers and custom mask Layers Sometimes we need to implement the Mask Layer Effect of our own pop-up box and pop-up box, next, let's talk about the javascript Implementation of the simplest of its own bullet box and the bullet box Mask Layer Effect. First, write the javascript of the mask layer. The Code is as follows: 1. Mask Layer js: // Obtain coordinatesFunction getP

Loading of ArcGis Engine vector layers and raster layers

Here is the vector layer loading method, because the layer itself is already produced by the Mxd class project file, so directly using the Mxd loading modeIf(Axmapcontrol1.checkmxfile (Shpfile))//determine if an mxd file{IArray pArry; PArry=axmapcontrol1.readmxmaps (Shpfile, Type.Missing); IMap PMap; for(inti =0; i ) {PMap= Parry.get_element (i) asIMap; if(Pmap.name = ="Layers") {Axmapcontrol1.mousepointer=Esricontrolsmousepointer.esri

Differences Between OSI and TCP/IP

Tags: blog HTTP Io OS ar use for SP File The text below is all from the Internet. OSI is layer-7 and TCP is layer-4. As follows: OSI: from Wikipedia http://zh.wikipedia.org/wiki/OSI%E6%A8%A1%E5%9E%8B. Application Layer) The application layer can communicate with the application interface to display the information to users. Common protocols include

The OSI seven layer model and some common commands and rights management of Linux inherit the previous article

OSI seven-layer modelApplication Layer: User interfacePresentation layer: Data representation, security, compression.Session Layer: Establish, manage, abort sessionTransport layer: reliable and unreliable transmission, error detection before transmission, flow controlNetwork layer: Logical address addressing for routing between different networksData Link layer: Group frame, hardware address addressing, error validation functionPhysical layer: Transmi

Solution: system. Data. sqlclient. sqlexception: exceeds the maximum number of nested layers of stored procedures, functions, triggers, or views (the maximum number of layers is 32 ).

System. Data. sqlclient. sqlexception: exceeds the maximum number of nested layers of stored procedures, functions, triggers, or views (the maximum number of layers is 32 ).First, let's look at the nested definition:For example:Nested Layer 1 Select * From ( Select * From Student) As ANested Layer 2 Select * From ( Select * From ( Select * From Student) As A) As

ps How to merge layers? PS Merge Layers Tutorial

PS How to merge layers? PS Merge Layers Tutorial In order to make an interesting photo of the Avatar, the source photograph must be taken first. The idea was that a man was teaching his girlfriend to hit the ball, while several women, who looked exactly like their girlfriends, had become the subject of guidance. Multiple compositing is to take several pictures first, and then synthesize them together. Eff

SQL issue: The maximum number of nested layers exceeded for a stored procedure, function, trigger, or view (maximum number of layers is 32)

1. The source code for the problem is as follows: create procedure P4 @avggrade int asselect CNO, avg (Grade ) from Scgroup by Cnohaving avg ( Grade) > @avggrade @avggrade = 80 Although no error, but run a lot of results come outSolve:CREATE PROCEDUREP4@avggrade int asSELECTCNO,AVG(grade) fromSCGROUP byCNO having AVG(grade)> @avggrade GOEXECUTEP4@avggrade = theAdd a go after the storage process ..... Although I do not know why ...Reference article:Http://www.cnblogs.com/f

Linux Network Knowledge Learning 1---(Fundamentals: Iso/osi seven-tier model and TCP/IP four-tier model)

The following content and after a few blog is only a relatively elementary introduction, want to study in depth suggested reading"TCP/IP Detailed Volume 1: Protocol"1.iso/osi seven-layer modelThe next four layer is for the data transmission service, the physical layer is the real transmission of data, the data Link layer, network layer, transport layer is mainly written to the corresponding data transmission informationPhysical layer: BitsTransmission

Understanding and summarization of load balancing of four layers and seven layers

IP, can not contact with the outside world. Solution 1: If you can buy so many extranet IP addresses to use and then load balance to the real Web server when TCP links are built, let the client and server establish a TCP link Solution 2: Quote: All problems with computers can be solved by creating a layer of virtual layers. You can virtualize all server host IP to a load-balanced server IP, so that all hosts of the server cluster can access the ext

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