Communicating
Digital Content
COMMUNICATION
a process in which two or more computers or devices transfer data,instructions, and information
sending devices (server) > transmission media (desktop) > receiving devices (phone)
NETWORK
a collection of computers and devices connected together via communications devices and transmission media
Advantages network
Facilitating communications
Sharing hardware
Sharing data and information
Sharing software
Transferring funds
Networks facilitate communications enable sharing of
hardware, data, information, and software and provide a means for transferring funds
Metropolitan area network (MAN)
Local area network (LAN)
Wide area network (WAN)
Personal area network (PAN)
a network that connects computers and devices in a limited geographical area (wireless LAN (WLAN) )
Wireless LAN (WLAN)
a LAN that uses no
physical wires
connects LANs in a metropolitan area
a network that covers a large geographic area
a network that connects computers and devices in an individual’s workspace using wired and wireless technology
NETWORK ARCHITECTURE
server/client network
peer to peer network
network shares its hardware and software with
other computers and mobile devices on the network.
one or more computers act as a server, and the client
computers and mobile devices access the server
Communications software
Provide an interface for users to communicate with one
another
Manage the transmission of data, instructions, and
information
Help users establish a connection to another computer,
mobile device, or network
Network Communications Standards and
Protocols
Bluetooth is a network protocol that defines how two Bluetooth devices use short-range radio waves to transmit data
RFID is a protocol that defines how a network uses radio signals to communicate with a tag placed in or attached to an object, an animal, or a person
Wi-Fi identifies any network based on the 802.11 standard that specifies
how two wireless devices communicate over the air with each other
Communications Lines
FTTP (5 Mbps to 300 Mbps)
Fractional T1 (128 Kbps to 768 Kbps)
DSL (256 Kbps to 8.45 Mbps)
T1 (1.544 Mbps)
Cable (256 Kbps to 100 Mbps or higher)
T3 (44.736 Mbps)
ATM (155 Mbps to 622 Mbps, can reach 10 Gbps)