Saturday, March 4, 2017

Definitions and Functions of Protocol

Definitions and Functions of Protocol


A protocol is a set of rules or standards or allow a relationship, communication and transfer of data between two or more computer point. The protocol can be implemented in hardware, software or a combination of both. At the lowest level, the protocol defines the hardware connection.


In general, the protocol function is as a link in the communication of data so that the data exchange process can run properly.
In particular, the function of the protocol is as follows:
a. Fragmentation and Re-assembly
Sharing of information transmitted into packets of data from the sender side. If it has reached the recipient, the data packets are then assembled into a complete news package.
b. encapsulation
Encapsulation (Encaptulation) is the process of sending data that comes with the address, correction codes, and others.
c. control Connectivity
Building relationships in the form of communication and data delivery to end the relationship from the sender to the receiver.
d. flow Control
The function of Flow Control is as a regulator of the data path from sender to receiver.
e. error Control
His job is to control the occurrence of errors when data is transmitted.
f. Transmission service
Its function is to provide services relating to data communications and data security priorities.

Some types of commonly used protocols in a computer is as follows:
a. NetBeui Frame Protocol
b. NetBIOS
c. NWLink
d. IPX / SPX
e. TCP / IP
f. subnet mask
Of the six types of the protocol, which will be discussed is the TCP / IP protocol.

TCP / IP (stands for Transmission Control Protocol / Internet Protocol) is a data communications standard used by the Internet community in the process of exchanging data from one computer to another computer on the network Internet. This protocol can not stand alone, because this protocol is a set of protocols (protocol suite). This protocol is a protocol that is most widely used today. The data are implemented in software (software) operating system. The term given to this software is the TCP / IP stack. This protocol uses a simple addressing scheme known as an IP address (IP Address), which allows up to several hundred million computers to be interconnected with each other on the Internet and where the IP address is also used on all sorts of protocol.

IP address (Internet Protocol Address or often abbreviated IP) is a row of binary numbers between 32-bit to 128-bit addresses used as identification for each host computer in the network Internet. The length of this figure is 32-bit (for IPv4 or IP version 4), and 128-bit (for IPv6 or IP version 6) which indicates the address of the computer on the Internet network based on TCP / IP.

Class IP Addresses
Each IP address consists of two fields, namely:

Field Net-ID, logical network address of the subnet in which the computer is connected
Field Host-Id, address logical device that is specifically used to identify each host on the subnet
Taken together, net-id and host-id provides each host on the internetwork with a dedicated IP address.