Chapter 3 Flashcards
fiber optic cable transmits digital signals using light impulses by using____________ cord.
62
glass or plastic
glass fiber optic cable can carry signal into greater distance then plastic fiber optic cable. true or false?
62
True
Fiber Optic cable is not immune to EMI and RFI. true or False?
62
false
Fiber Optic cable is more expensive then twisted pair. true or false?
62
true
Single mode fiber (SMF)
63
is a very high speed, long distance media, it can transfer data 50 time faster then multimode fiber.
if we need to make a connection of 2000 feet can we use MMF and have a high speed?
63
yes, because MMF can give us high speed up to about 3000 feet.
what are the two most popular Fiber optic connecters?
63
straight tip ( ST ) subscriber connector ( SC )
Small form fiber connector ( SFF ) is an other kind of fiber optic connector, this connector has 2 version what are they?
64
MTRJ mechanical transfer registered jack.
LC the local connector.
_____ are used to go from one mode of fiber to another mode.
66
Media converter.
what are some the media converter?
66
single mode fiber to Ethernet.
multimode fiber to Ethernet.
fiber to coaxial.
singlemode to multimode
what is BPL?
67
Short for Broadband-over-PowerLine, BPL is a term used to describe broadband connections that go over an electrical socket.
A serial cable.
68
A serial cable is a cable used to transfer information between two devices using a serial communication protocol. it send data one bit at a time.
Recommended standard RS-232
69
The RS-232 standard is commonly used in computer serial ports.
USB can connect a maximum of 127 external devices. true or false?
69
true
what is the difference between T568A and T568B?
74
the only difference is that pairs 2 and 3 are swapped
