Ch 16 Key Terms

• Ethernet standard, oper8s @ 100 Mbps & uses twisted-pair cabling up to 100meters (328 ft)
• Also called Fast Ethrnet
• Variations:100BaseTX  &  100BaseFX

• (4^th generat'n)
• cell can: browse web, stream music & video, play online games, instant msg, & video conferencing
• *fastest speed for cellular data

type of physical arrangmt of connect'n btwn comptrs where ea wireless comptr serves as it's own wireless access pt. & is responsble for securing ea connect'n

• rel8s to analog communc'n; range of frequencies commun. channel/cable can carry
• gen use- vol. of data that travels on bus/over cable stated in: bits per sec (bps), kilobits per sec (Kbps) & megabits per sec (Mbps)
• "throughput/line speed"

fixed transceiver & antenna used to cr8 1 cell w/n cellular ntwrk

device stands btwn 2 segmts of ntwrk & manages ntwrk traffic btwn them

older topology where all computrs connected in sequential line

broadband technol-g uses cable tv line & is always connected

Code ÷ Mult. Accss- protocl standard used by cellular WANs & cell phones

• ntwrk can be used when wireless ntwrk must cover a wide area
• ntwrk made up of cells, ea contrlled by base stat'n
• "cellular WAN"

cable has single copper wire down middle and braided shield around it

• Digital Subscriber Line
• telephone line carries data from end to end & used as type of broadband Internet Accss

dedic8d, leased line used for Internet accss, uses fiber optic cables from ISP to a residence/ place of business

transmits signals as pulses of light over glass/plastic strands inside protected tubing

ntwrk where ea node connects to every nodeo ntwrk

version of Ethernet, supports rates of data transfer up to 1 gigabit per sec

• Global System for Mobile Communic'n
• open standard for cellular WANS & cell phones;
• uses digital communc'n of data & is accepted & used world wide

ntwrk device/box provides central locat'n to connect cables & distributes incoming data packets to all other devices connected to it

ntwrk where star ntwrk uses mult switches in sequence, & switches form a bus ntwrk

type of thin client designed to make easier for user to connect to Internet, browse web, use email & perform other simple chores on internet

• Internt Servc Providr
• commercial grp provides Internet accss for mthly fee

• Integr8d Servcs Digital Ntwrk
• broadband telephone line carries data 5x speed as regular telephone lines.
• 2 channels (tele #s) share a single pair of wires
• replaced by DSL

local area ntwrk- covers small area, usually w/n 1 building

delays in ntwrk transmission resulting in slower ntwrk performance; measured by round-trip time it takes for data packet to travel from source to destinat'n & back to source

• conncet'n used by satellites
• requires no obstruct'n from mountains, trees, tall buildings from the satellite dish to satellite

• Metropolitan Area Ntwrk
• ntwrk covers large city/ campus

Ea node (computr/other device) that uses the ntwrk is responsible for sending & receiving transmiss'ns to any other node to which it wants to communic8 w/central pt of communicat'n

• Ntwrk Attached Storage
• device provides mult bays for hard drives & an Ethernet port to connect to ntwrk
• device likely to support RAID

• Ntwrk Interface Card
• expans'n card plugs into computr's mothrboard & provides port (back of card) to connect comptr to a ntwrk
• "ntwrk adaptr"

• Personal Area Ntwrk
• small ntwrk consists of personal devices @ close range.
• includes: cell phones, PDAs, & notebook comptrs

feature might be avail on high-end ntwrk adapters, allows power to be transferred over Ethernet cable to remote devices

• Quality of Service
• Win ntwrk hardware devices use to improve ntwrk performance for an app not getting best ntwrk performance
• VoIP requires high QoS

• phone line/connect'n port found on modems, telephones, & house phone outlets
•  RJ (registered jack)

port looks like large phone jack & used by twisted-pair cable to connect to a wired ntwrk adapter/other hardware device

netwrk where nodes form a ring

ntwrk config uses centralized device (such as switch/hub) to manage traffic on the ntwrk

• device used to connect nodes on ntwrk in star ntwrk topology
• segmnts ntwrk to improve ntwrk performance by deciding which ntwrk segmnt is to receive a packet on the basis of packet's destinat'n MAC address

physical arrangmnt of connect'ns btwn computers in a ntwrk

cabling, such as ntwrk cable, uses pairs of wires twisted together to reduce crosstalk

TCP/IP protocl & app provides voice communc'n over Internet (or phone if it's a VoIP phone)

config a computr to respond to ntwrk activity when it's in sleep state

• Wide Area Ntwrk
• Ntwrk/grp of ntwrwks spanning large geographical area

• WLAN
• LAN transmits data over infrared/ radio waves