Chapter 3 - Network Media & Topologies Flashcards
what’s the difference between multimode and singlemode fiber?
cladding - what is it?
3-91
MMF - high speed, medium distance (up to 3,000 ft), completely immune to electrical interference, will be made of glass OR plastic
SMF - high speed, high distance (50X farther than MMF), made of glass
special material that lines the core of MMF
which cable type is more prevelent in networks, fiber optic or copper?
what’s the most common type of cable in use today?
how is STP shielded?
3-91
copper
unshielded twisted pair
foil shield that covers the wires against magnetic interference
you have CAT cables. tell me the 5 different categories and their maximum speeds.
which one of these is the minimum for all new installation?
these cables are all what?
3-93
3 - 10 Mbps 5 - 100 Mbps 5e - 1000 Mbps 6 - 1000 Mbps 6a - 1000 Mbps
Cat5e
unshielded twisted pair
state the 2 types of coax cable. which one offers less resistance, better performance, and why is it able to accomplish this?
strait-through vs crossover: which do you use between PC and a router?
3-94,95
RG-59
RG-6
RG-6, because of thicker core
crossover
how would you connect a router to a digital circuit such as a T1 or T3 line?
how would you connect a CSU/DSU to another CSU/DSU?
is the most common type of cable in a network a straight-through or crossover? what is that cable also known as?
3-95
use a CSU/DSU channel service unit/data service unit
use a T1 crossover cable
straight-through
patch cable
single mode, multimode fiber, inside building, outside building. which cable goes where?
3-96,97
inside - multimode
outside - single mode
fiber optic connector types.
tell me full name a description
ST
SC
LC
MTRJ
3-99,100
straight tip - half twist bayonet
standard connector - push/pull
local connector - fiber connector, RJ style
mechanical transfer registered jack - designed to replace the SC connector
copper connector types. full name and description?
RJ45 RJ11 BNC F DB9 - RS232
3-101,102,103
most common of the network connectors used for telephone connections push in and twist to lock common coax connector type 9 pins, or 9 holes
what’s a patch panel?
what’s a 110 block?
show me the difference between 568A, 568B, and 568A+568B
3-104
rack or wall-mounted structure that houses cable connections
replacement for telephone wire installations straight-through
straight-through TX+ 1----1 RX+ TX- 2----2 RX- RX+ 3----3 TX+ RX- 6----6 TX-
crossover is similar, but 1 and 2 go to 3 and 6
802.11 chart.
tell me the letter, method, freq, and speed
now tell me the general ranges
3-106
a - OFDM, 5 GHz, 54 Mbps
b - DSSS, 2.4 GHz, 11 Mbps
g - both, 2.4 GHz, 54 Mbps
n - both, both, 600 Mbps
a,b,g - 30 meters. n - 90 meters
which 2 wireless standards allow for channel bonding?
3-107
g and n
NOT a and b
big table of WANs, tell me their speeds
T1 T3 ADSL SDSL VDSL Cable Satellite
3-108 ~ 117
1.54 Mbps
44.736 Mbps
10 Mbps
1.5 Mbps
100 Mbps
10 Mbps
10 Mbps
continuing the big table of WANs, tell me their speeds
OC-X (3 kinds) wireless ATM SONET ISDN Dial-up
3-108~117
50 Mbps, 150 Mbps, 160 Gbps it varies 500 Mbps 150 Gbps 128 kbps 56 kbps
what’s the difference between circuit switch and packet switch?
3-116,117
circuit switch - used dial up lines and a circuit switched network
packet switch - X.25, Frame Relay is an example
what is MPLS?
point to multipoint connections cannot use ____ ____ because the connections are ____.
therefore, ____ controls the traffic.
3-118
multiprotocol label switching, uses labels to make forwarding decisions instead of relying on specific protocols
full-duplex communications, shared
CSMA/CD
