A WAN connects locations across large geographical distances using telecommunications, allowing businesses to communicate regardless of location. A MAN connects local networks within a city using high-capacity technology and provides internet access. A LAN interconnects computers in a limited local area like a home or office using high data transfer rates. A PAN enables communication between personal devices an individual carries on their body, within a few meters.

1. WAN : wide area network - a telecommunication network that covers a broad area (i.e., any network that
links across metropolitan, regional, or national boundaries). Business and government entities utilize
WANs to relay data among employees, clients, buyers, and suppliers from various geographical
locations. In essence this mode of telecommunication allows a business to effectively carry out its daily
function regardless of location.
MAN : metropolitan area network - a computer network that usually spans a city or a large campus. A
MAN usually interconnects a number oflocal area networks (LANs) using a high-capacity backbone
technology, such as fiber-optical links, and provides up-link services to wide area networks (or WAN) and
the Internet.
LAN : local area network - a computer network that interconnects computers in a limited area such as
home, school, computer laboratory or office building.[1] The defining characteristics of LANs, in contrast
to wide area networks (WANs), include their usually higher data-transfer rates, smaller geographic area,
and lack of a need for leased telecommunication lines.
PAN: personal area network - a computer network used for communication among computer devices,
including telephones and personal digital assistants, in proximity to an individual's body. The devices may
or may not belong to the person in question. The reach of a PAN is typically a few meters. PANs can be
used for communication among the personal devices themselves (intrapersonal communication), or for
connecting to a higher level network and the Internet (an uplink)
DHCP : dynamic host configuration protocol - a network configuration protocol for hosts on Internet
Protocol (IP) networks. Computers that are connected to IP networks must be configured before they can
communicate with other hosts. The most essential information needed is an IP address, and a default
route and routing prefix. DHCP eliminates the manual task by a network administrator. It also provides a
central database of devices that are connected to the network and eliminates duplicate resource
assignments.
ISP : International Specialty Product -
IP : internat protocol - a numerical label assigned to each device (e.g., computer, printer) participating in
a computer network that uses the Internet Protocol for communication.[1] An IP address serves two
principal functions: host or network interface identification and locationaddressing. Its role has been
characterized as follows: "A name indicates what we seek. An address indicates where it is. A route
indicates how to get there."
TCP/IP: Internet Protocol Suite