6.1 - LAN Components Flashcards
LAN Components:
- Client computer
- Server
- Network Interface Cards (NIC)
- Network circuits
- Hubs/Switches/Access Points
- Network Operating System
The ____________________ is used to connect the computer to the network cable in a wired network and is one part of the physical layer connection among the computers in the network
network interface card (NIC)
In a wireless network, the NIC is a ____________________ that sends a receives messages on a specific radio frequency
radio transmitter
Each computer must be physically connected by __________________ to the other computers in the network
network circuits
Network circuits for wired LANs
UTP, STP, or fiber-optic cable
Network circuits for wireless LANs
radio transmissions
Most LANs are built with __________________ (UTP) cable, __________________ (STP) cable, or fiber-optic cable
unshielded twisted-pair… shielded twisted-pair
This type of cable is low cost and makes it very popular and useful
UTP
_____ is only used in special areas that produce electrical interference (factories near heavy machineries)
STP
__________ is thinner than UTP and take up less space when cabled through a building
Fiber-optic cable
Wireless LANs (WLANs) use radio transmission to send data between the NIC and the __________ (AP)
access point
Most countries permit __________ to operate in two frequency ranges: 2.4 and 5 GHz range
WLANs
Under ideal conditions, the radio transmitters in the NICs and APs can transmit ____ - _____ meters (300 - 450 feet)
100…150
Network hubs and __________ provide an easy way to connect network cables
switches
Each connection point where a cable can be plugged in is called a ________
port
Switches can be designed for use in a ____________________ (SOHO) environments or for large enterprise environments
small-office, home-office
Hubs and switches act as __________
repeaters
A ____________________ is a radio transceiver that plays the same role as a hub or switch in wired Ethernet LANs
wireless access point (AP)
It enables the computers near it to communicate with each other, and also connects them into wired LANs
wireless access point (AP)
Ap that needs to external power
power over Ethernet (PoE)
The ____________________ or NOS is the software that controls the network
network operating system
Every NOS provides two sets of software:
- One that runs on the network server(s)
- One that runs on the network client(s)
The __________ version of the NOS provides the software that performs the functions associated with the data link, network, and application layers and usually the computer’s own OS
server
The __________ version of the NOS provides the software that performs the functions associated with the data link and the network layers and must interact with the application software and the computer’s own OS
client
