Chapter 3 Flashcards
What is a topology?
-way of connecting computers together
What is the mesh formula?
of connections you need to connect computers when y= # of computers and # of connections = y(y-1)/2
Describe RG-6
Predominant coax cable for networking.
Describe RG-59.
Primary cable for cable television.
Describe CAT 6.
max freq: 250 Mhz
Max band: 10 Gbps
Describe CAT 5e.
max freq 100 Mhz, max band 1 Gbps
Describe CAT 3.
Max freq 16 Mhz, max band 16 mbps
What is the wavelength of multimode fiber?
850 nm
What is the wavelength of single-mode fiber?
1310nm or 1550nm
What is ST connector?
Stick and twist, round connector.
What is SC?
Stick and click connector.
What is LC?
Little Connector(duplex)
What is firewire?
high speed serial, IEEE 1394, point to point, 800 Mps can’t network with vista or windows 7
What is serial?
DB-9, 56,000 bps
What is a parallel connectoin?
2 Mbps, 25 pin female; IEEE 1284
What is PVC?
Polyvinyl chloride; has no significant fire protection.
What is plenum?
creates less smoke and fumes when burnt. costs 3-5 times more than PVC
What is riser cable?
used for vertical runs between floors of a building.
What is IEEE 802 working group?
Sets standards for networking
What is 802.3?
-ethernet
What is 802.11
wireless LAN
