NETWORK SERVICE / NETWORK SERVICE AND DATA COMMUNICATION ARCHITECTURE
A. Network Service
Understanding Network
Computer network (Network) is a system consisting of computers, computer peripheral devices and other network devices such as cables, switches, HUBs, routers, etc. are connected using certain media with the same rules and work together to achieve a goal same.
The purpose of the computer network is:
1. Resource sharing: sharing of printer usage, CPU, memory, hard drive.
2. Communication: electronic mail, instant messaging, chat
3. Access information: web browsing
4. Help keep information up-to-date and up-to-date
5. A well-managed or well-managed distributed data storage system enables multiple users to access data from different locations, and restrict access to data while it is being processed.
In order to achieve the same goal, every part of the computer network requests and provides services. The party requesting the service is called the client (client) and the one providing the service is called the maid (server). This architecture is called the client-server system, and is used in almost all computer network applications.
There are 3 types of Network / Network are:
1. Local Area Network (LAN) / Local Area Network.
A LAN, is a network bounded by a relatively small area, generally constrained by an environmental area such as an office in a building, or a school, and usually not far from about 1 sq. Km.
2. Metropolitan Area Network (MAN) / Metropolitan area network
A MAN, usually covering a larger area of LAN, for example between regions within a province. In this case the network connects several pieces of small networks into a larger area environment For example: the Bank's network where several branch offices of a bank within a large city are connected to each other.
3. Wide Area Network (WAN) / Large-Scale Area Network
Wide Area Networks (WANs) are networks whose scope is usually already using Satellite or submarine cables as an example of a whole network of Banks in Indonesia or in other countries using WAN means to connect, Usually WAN is rather complicated and very Complex, using many means to connect between LAN and WAN into Global Communications like the Internet.
But anyway between LAN, MAN and WAN is not much different in some respects, only the scope of the area is different from one another.
The Internet is one example of the real network in the world, the internet is a combination of small networks in the world that merge into one large network in the world. As long as we connect to a large network of internet we can benefit from it. Some apps provided by the internet: e.g. Search can be considered a network as well, network Some of the major applications of the Internet network:
Electronic Mail, allows us to send each other a letter with friends in the whole world
Web, with the web allows the retrieval of information we need that is shared by the people in the world
Electronic Conference, allowing meetings with existing colleagues everywhere
File Transfer, sending the file
Remote Computer, can run the computer remotely
Database access, access the database remotely
Etc
Layer Layout Network
The rule of the network layer for each End System is to form an end to end relationship. It could be this relationship is CON or CLNS. In both forms, NS_user will be related no matter how many network types are involved. For that required router.
To achieve such interconnection purposes, according to the OSI reference model, the network layers of each ES and IS consist not only of a protocol but at least three (sublayer) protocols. Each of these protocols will form a complete rule in the service system between layers of the network. In ISO terminology, each internet-building network known as a subnet, possesses three important protocols:
- Subnetwork independent convergence protocol (SNICP)
- Subnetwork dependent convergence protocol (SNDCP)
- Subnetwork dependent access protocol (SNDAP)
B. Architecture and data communication
Understanding Architecture and data communication
Data Communication Architecture is a sequence of work processes on a Host for the sending or receiving process.
1.1 Understanding Data Communications
1. Data communication is the transmission or the process of sending and receiving data from two or more devices (sources), through some media. The medium may be a coaxial cable
Computer network (Network) is a system consisting of computers, computer peripheral devices and other network devices such as cables, switches, HUBs, routers, etc. are connected using certain media with the same rules and work together to achieve a goal same.
The purpose of the computer network is:
1. Resource sharing: sharing of printer usage, CPU, memory, hard drive.
2. Communication: electronic mail, instant messaging, chat
3. Access information: web browsing
4. Help keep information up-to-date and up-to-date
5. A well-managed or well-managed distributed data storage system enables multiple users to access data from different locations, and restrict access to data while it is being processed.
In order to achieve the same goal, every part of the computer network requests and provides services. The party requesting the service is called the client (client) and the one providing the service is called the maid (server). This architecture is called the client-server system, and is used in almost all computer network applications.
There are 3 types of Network / Network are:
1. Local Area Network (LAN) / Local Area Network.
A LAN, is a network bounded by a relatively small area, generally constrained by an environmental area such as an office in a building, or a school, and usually not far from about 1 sq. Km.
2. Metropolitan Area Network (MAN) / Metropolitan area network
A MAN, usually covering a larger area of LAN, for example between regions within a province. In this case the network connects several pieces of small networks into a larger area environment For example: the Bank's network where several branch offices of a bank within a large city are connected to each other.
3. Wide Area Network (WAN) / Large-Scale Area Network
Wide Area Networks (WANs) are networks whose scope is usually already using Satellite or submarine cables as an example of a whole network of Banks in Indonesia or in other countries using WAN means to connect, Usually WAN is rather complicated and very Complex, using many means to connect between LAN and WAN into Global Communications like the Internet.
But anyway between LAN, MAN and WAN is not much different in some respects, only the scope of the area is different from one another.
The Internet is one example of the real network in the world, the internet is a combination of small networks in the world that merge into one large network in the world. As long as we connect to a large network of internet we can benefit from it. Some apps provided by the internet: e.g. Search can be considered a network as well, network Some of the major applications of the Internet network:
Electronic Mail, allows us to send each other a letter with friends in the whole world
Web, with the web allows the retrieval of information we need that is shared by the people in the world
Electronic Conference, allowing meetings with existing colleagues everywhere
File Transfer, sending the file
Remote Computer, can run the computer remotely
Database access, access the database remotely
Etc
Layer Layout Network
The rule of the network layer for each End System is to form an end to end relationship. It could be this relationship is CON or CLNS. In both forms, NS_user will be related no matter how many network types are involved. For that required router.
To achieve such interconnection purposes, according to the OSI reference model, the network layers of each ES and IS consist not only of a protocol but at least three (sublayer) protocols. Each of these protocols will form a complete rule in the service system between layers of the network. In ISO terminology, each internet-building network known as a subnet, possesses three important protocols:
- Subnetwork independent convergence protocol (SNICP)
- Subnetwork dependent convergence protocol (SNDCP)
- Subnetwork dependent access protocol (SNDAP)
B. Architecture and data communication
Understanding Architecture and data communication
Data Communication Architecture is a sequence of work processes on a Host for the sending or receiving process.
1.1 Understanding Data Communications
1. Data communication is the transmission or the process of sending and receiving data from two or more devices (sources), through some media. The medium may be a coaxial cable
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