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Ess. 220-701

Ch. 16 Learning Local Area Networking

client a PC that requests information or services.
network interface card (NIC) defines or labels on the network.
packets small data unit
serevr provides information or services.
bus topology all computers connect to the network via a main line (bus cable)
ring topology all computers on the network attach to a central ring of cable
star topology where computers connect to a central wiring point(usually called a hub)
mesh topology each computer has a dedicated line to every other computer
media access control (MAC) address build-in identifier, a binary address unique to that single network card
cyclic redundancy check (CRC) information is stored in the packet to enable the receiving network card to verify if the data was received in good order.
hardware protocol defines everything necessary to get data from one computer to another.
Ethernet Name coined by Xerox for the first standard of network cabling and protocols. Based on a bus topology.
10BaseT run at 10 Mbps
100BaseT run at 100 Mbps
1000BaseT runs at 1000Mbps or 1 Gbps
unshielded twisted pair (UTP) composed of wired twisted around each other
hub provides a common point of connection for network devices
switch Device that filters and forwards traffic based on some criteria. A bridge and a router are both examples of switches.
bandwidth capacity of a network transmit a given amount of data during a given period.
Shielded twisted pair (STP) composed of wired twisted around each other and shielded.
full duplex send and receive data at the same time
link lights give you a clue about what is happening with the link
activity light turns on when the card detects network traffic
coaxial cable consist of a center cable (core) surrounded by insulation
client/server network one machine is dedicated as a resource to be shared over the network
peer-to-peer network enables any or all of machines on the network to act as a sever
domain-based network one or more dedicated servers called (domain controllers) hold the security database for all systems.
directory service store user and computer account information
administrator account has complete an absolute power over the entire computer
NetBIOS Extended User Interface (NetBEUI) default protocol for Windows for workgroups, Lantastic,a,nd Windows 95.
routers sort packets and send them along the proper LAN
Transmission Control Protocol/Internet Protocol TCP/IP Communication protocols developed by the U.S. Department of Defense to enable dissimilar computers to share information over the server
IP address unique identification number for your system on the network
subnet mask a value that distinguishes which part of the IP address is the network address and which part is the host address
destination port a fixed, predetermined numebr that defines the function or session type
ephemeral port an arbitrary number generated by the sending computer
PING enables one machine to check whether it can communicate w/ another machine
default gateway local router
domain name server (DNS) keep databases of IP addresses and their corresponding names
dynamic host configuration protocol (DHCP) enables you to create a pool of IP addresses that are given temporarily to machines.
static IP address address will not change
loopback plug device used during loopback tests to check female connector on a NIC
Created by: Jefferywrght