Networking and Programming in One

FTP server is a server assigned to provide delivery service / exchange data to FTP client with FTP client must request (request) first to FTP server. The only method used by FTP is the standard authentication method, which requires the username and password to access the data on the FTP server. Registered users (have a username and password) have full access to some directories and files in it so that the registered user can create, copy, move or even delete those directories. For how it works, first FTP client must request connection to FTP server, if it is connected with FTP server then FTP client can do data exchange such as upload and download data. Benefits of FTP We can exchange files between computers easily, although the file has a large size For website owners, with the FTP, they can backup their website easily We can indirect or implicit remote computer FTP provides reliable and efficient data transfer.

Protocol functions as a rule that allows computers to communicate in a network. When two networks want to communicate, data will be entered into the package. Each data packet must pass through a specific protocol for communication to be established, each protocol has its own function. To facilitate the management of data packets, then the protocol is collected in one layer. In the previous article already discussed about 7 layer osi. Here will be explained about the TCP / IP layer. Function of each Layer A. Network Access Layer This layer is the lowest layer on the TCP / IP layer. The functions of the protocols in this layer are : Defines how to use the network to transmit frames, which are units of data passed through physical media. The protocol on this layer must be able to translate electrical signals into digital data that computers understand, derived from other similar devices. In this layer there are protocols such as Ethernet, Token Ring, PPP, FDDI, ATM, X...

The Seven OSI Layer 7 OSI Layer is a network architectural model developed by the International Organization for Standardization (ISO) body in Europe in 1977. OSI has an extension, namely: Open System Inter Connection which is a collection of Layers that are not interdependent but are related to each other Others, the intent of the statement is that each Layer already has their respective Duties and Responsibilities and Mutual Fill each other, and the same as a Group cooperation. Seven OSI Layer has 2 levels layer Function of each Layer Physical Layers  : Functions for determining network transmission media, signaling methods, bit synchronization, network architecture, network topology and cabling. Devices that can be connected with the Physical layer are the NIC (Network Interface Card) and the cables. DataLink Layer : This works to determine how data bits are grouped into a format called frames. In this Layer there are error correction, flow c...

HTTP (Hypertext Transfer Protocol) HT TP (Hypertext Transfer Protocol) is a protocol used by WWW (World Wide Web). HTTP defines how a message can be formatted and sent from server to client. HTTP also controls what actions to be taken by web servers and web browsers in response to commands in this HTTP protocol. The problem with HTTP is that communication is not fully secure. Information we send to websites such as contact information can be easily retrieved by third parties. For example, it is not advisable to transact on the Internet and banking affairs, as the packets sent using this protocol are not encrypted, so they are considered less secure. A session on HTTP is a sequence of request transactions and a network response by using the HTTP protocol. An HTTP client will start a request. The client will open a Transmission Control Protocol (TCP) connection to a specified port on a host (usually port 80 or 8080) server listening on port 80 will wait for client reques...

Understanding Protocol and Standard in Networking : Part 2 - What is standard  ? A standard is an agreed protocol. In the early days of computer networking, each computer manufacturer built its own network protocol. As a result, you will not be able to connect equipment that comes from different manufacturers in one network. Then comes the standard to save us from such an event. Standard is the definition of a protocol used by many other industries but not tied to a particular manufacturer. Given the standards, we all use network tools from different manufacturers on one network. As long as the tools are used to implement standard protocols, they can communicate with each other. Many organizations are involved in setting standards on the network. But there are five organizations that are important : American National Standards Institute (ANSI): The official standardization organization that exists in the United States. Institute of Electrical and Electronics Eng...

Understanding Protocol and Standard in Networking - Part 1 A protocol is a collection of rules that make communication work effectively. Almost every day we meet protocols. For example, when you buy rice at the nearest supermarket with a debit card, the cashier will tell you the total price you have to pay. You swipe the debit card in the card reader and insert a 6 digit pin. Then the machine processes our purchase whether validating the purchase or not, depending on the amount of remaining balance. If the balance is sufficient then the purchase is successful and the machine will print the proof of payment. In addition to the above example, here's another example of using protocols in our everyday lives: making phone calls. In doing so, almost all of the set call protocols we have done, and quite complicated also if look it carefully: When you pick up the phone, you will hear a tone dial (before long phone call) (unless you use the phone, the long tone dial w...