Networking is defined as connectivity between peers inside
network and outside network.Inside network connectivity in
Networking topology is known as Lan and outside Network
connectivity is called as WAN.Lan Is defined as Local Area
Network between peer systems and Wan is defined as Wide
Area Network between Lan to a Lan in different Location and
this connectivity of lan in different locations is defined
as WAN.Networking is depends on OSI layer which is defined
as OPen System Internetworking.In OSI Layer data is reached
to destination from source passing all the 7 layers of OSI
layer and these 7 layers were on either side of network and
they are defined as
It is connection between two or more computer or devices
through the transmission media for the purpose of
communication and accessing resources is called network and
the whole process is called networking.
Proxy can be defined as an intermediately device,
which plays the role of an agent in the Context of SNMP.It
works as a Virtual LAN to the Devices Which are not having
an Ethernet Inerface,Like MODEMS and Multiplexers.
By using the SNMPPROXY we can Know the STATUS of
these(MODEMS etc) devices.
When an Agent performs PROXY role,it acs on the behalf of
one or more other nodes.A NETWORK MANAGER that wishes ti
obtain the information from or control the node
communicates with the proxy agent.The proxy agent then
translates the MANAGER's request to a form appropriate for
the arget sysem and uses an appropriate nework management
protocol to communicate with the target system.
creating daemon is very simple in Linux. you just need to
create a child process from its parent process and kill the
parent process. also you should close all the I/O streams.
[as daemon is a background process which is not interactive
latter on you can write a init script in /etc/init.d/ to
make it a service.
This the communication between computer systems or devices. A computer network is any set of computers or devices connected to each other with the ability to exchange data.
Data Communication is the process of transferring information from a sender to a receiver with the use of a medium in which the communicated information is understood by both sender and receiver. It is a process that allows organisms to exchange information by several methods.
Telecommunications is a general term for a vast array of technologies that send information over distances. Mobile phones, land lines, satellite phones and voice over Internet protocol (VoIP) are all telephony technologies -- just one field of telecommunications. Radio, television and networks are a few more examples of telecommunication.
com port is a communication port or a serial port. which is
used to connect the mouse,keyboard,router and modem.
its cache memory.
A CPU cache is a cache used by the central processing unit
of a computer to reduce the average time to access memory.
The cache is a smaller, faster memory which stores copies of
the data from the most frequently used main memory
locations. As long as most memory accesses are to cached
memory locations, the average latency of memory accesses
will be closer to the cache latency than to the latency of
When the processor needs to read from or write to a location
in main memory, it first checks whether a copy of that data
is in the cache. If so, the processor immediately reads from
or writes to the cache, which is much faster than reading
from or writing to main memory.
172 16 8 159
8 +8 +8 +1 =25
Zeros mean, that you can change address bit, so
159=10011111 and last combination of 0011111 is changeable,
so max number in you network usually is broadcast address.
so last byte is 1(unchangeable)1111111(max sequence of
11111111(bin) means 255(dec)
Whole address 10101100.00010000.00001000.11111111 =
Protocols TCP/IP is used to configure windows Operating
System which is abrreviated as Transmission Control
Protocol for transmitting data from one system to another.
Protocols IPX/SPX are used in Unix operating system for
Protocols ICMP are used as Internet Protocols.