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InternetComputer network performance indicatorsNetwork CommunicationThree exchange methodsNetwork layered protocol model
Internet
Composition:
Edge
Composed of all hosts connected to the Internet
It is directly used by users for data exchange (Transfer Data, audio or video) and resource sharing.
Core
Function:
Provides connectivity to a large number of hosts at the edge of the networ
Differences and connections between MAC addresses and IP addresses (Computer Network)Recently, I took a test and always encountered mac address problems. So I did some research online. I remember that I learned this knowledge when I was a sophomore, I have basically returned it to Mr. Huang Peijie, but I am very grateful to him for his patience and responsibility in teaching us the principles of
What is a computer networkWikipedia: Computer network (computer network) is the use of communication equipment and lines will be geographically different, functional independent of multiple computer systems connected to a fully fu
protocols. Therefore, the system focuses on the following two aspects of the Principles and protocols of computer networks.
(1) protocol layering. currently, the actual computer network is based on the TCPIP architecture. The entire network protocol is divided into four lay
Computer network performance indicators computer network performance generally refers to its several important performance indicators. However, in addition to these important performance indicators, some non-performance features also have a great impact on the performance of comput
Three stages of Internet development0 The first phase is the process of developing from a single network ARPANET to the Internet.0 The second stage is the completion of the three-level structure of the Internet , including the backbone network, regional network, Campus Network (Enterprise
necessary to find the hardware address of a router on the local area network through ARP, and then send the packet to this router so that the router forwards the packet to the next network. The rest of the work is done by the next network. the resolution from the IP address to the hardware address is automatic, and the user of the host is unaware of this addres
1.Network:will be distributed indifferent LocationsComputers, terminals and their ancillary equipment, which have the ability to independentlycommunication equipment and communication line connectionand configure the network software to achieve the computingMachine resource SharingThe system.2.What is a domain name, IP address, and MAC address ? What is the relationship between them?IP Address: An IP address can also be called an Internet address to i
, examination database, etc., can be run on the network. If a school includes more than one discipline (or multiple departments), it can also form multiple local networks and be wired or wirelessly connected. Secondly, the campus network should have educational, administrative and general management functions. Then we explain the campus
Modern society, the network has become the same as water, electricity as our indispensable daily needs, can say that the network everywhere. As a user, you only need to learn how to use the network, and as a computer professional students, a programmer is necessary to understand the principles.
Therefore, this chapter
1.1 What is computer network.
• Computer network is the technology of computers + communication technology
• Communication Components
SOURCE-> sending Equipment-> channel-> receiving equipment-> bed and Breakfasts
• What is the Internet. --isp (internetservice Provider) Internet service provider.
The internet is compos
Introduction to Computer Network Reading Notes a large number of independent computers are connected to each other to form a computer network. Computer networks can be classified by transmission technology and
To learn the protocol well, we should master the basic layers of the network structure. On this basis, we can clearly identify various computer network protocols. Now, let's talk about the concept of computer network protocol.
Computer
class C corresponding subnet mask default value, also can be a,classB Address Mask2 6 hosts3 Mask net number of different4 40945 Valid but not recommended6 194.47.20.126 class C7 have3200 bitBecause of the Shard, a total of 4 of the number of reported pieces, so 3840bitrouting tableInterface 0 R2 R4 R3 R4class B IP3 data field lengths 1480,1480,1020 bytesSlice offset field 0,185,370MF field 1,1,0Address Block4 A host, so there are threeCompare RIP protocol and OSPF ProtocolRIP has a simple top
1_1Starting with David Weatherall's computer Networks, the first lesson is about goals and Motivation,focus of the course is networking, discussing packets and The internet, the bottom communications and the upper distributed systems, is how the network is built and what the top apps can do. The main point is learning how the Internet works, TCP/IP,DNS,HTTP,NAT,V
to the log management page of the target server system. On this page, we can remotely view various log information, you can also remotely delete or download log files.
It is also very simple to remotely view specific log Content. You only need to click the "Web management log" hyperlink on the log management page, on the corresponding hyperlink page, select the target log file to be viewed and click "view log". The specific log content will be displayed in the IE browser window.
Iii. troubles
Computer network Knowledge arrangement--Foundation
computer network Top-down method notes
End systems are connected to each other through communication links and packet switches .The sending-side system segments the data, each with the first byte, and the resulting packets become grouped .
The two most famous types in
Network is a tool that everyone can't do without. It is becoming more and more active. How much do you know about these computer network protocols? Understanding the use of these protocols can help us use computer networks more rationally. Now, we will introduce several comm
OSI Layer Seven Network model encyclopedia:The OSI (open System Interconnection) seven-layer network model, known as the Open System Interconnect Reference Model, is a logical definition, a specification that divides the network logically into 7 layers. Each layer has relevant, corresponding physical devices, such as routers, switches.OSI Seven layer model is a f
The process of forwarding packets in IP layerThere are four Class A networks connected by three routers. There can be thousands of hosts on every network. As you can imagine, if you make the routing table by the destination host number, the resulting routing table will be too large. However, if the routing table is made by the network address of the host , then t
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