NETWORK PROTOCOL
Protocols serve as a language of
communication among network devices. Examples are HTTP, TCP/IP and SMTP, they
provide a foundation that much of the internet is built on. Protocol
can also be referred to as a set of nodes that govern data communications. A
protocol defines what is communicated, how it is communicated and when it is
communicated.
Network Protocol on the other hand,
is the format and procedure that governs the transmitting and receiving of data
in a network.
KEY ELEMENTS OF PROTOCOL
1.
Syntax:
refers to the structure or rules that govern how data are presented.
2.
Semantic: refers to the meaning of each section of bits.
3.
Timing: refers to two features i.e. when
data should be sent and how fast they can be sent.
FUNCTIONS OF PROTOCOLS
The main functions of Protocols in a
network are:
a.
Line
Access and;
Line access is
concerns with how the sending device gains access to the network to send a
message.
b. Collision
Avoidance.
Collision
Avoidance refers to managing message transmission so that the messages do not
collide with each other on the network.
Other functions include:
c.
To
identify each device in the communication path.
d.
To
secure the attention of other device.
e.
To
verify correct receipt of the transmitted message.
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