Chapter 3 - Network Media and Topologies Flashcards
(23 cards)
What are the characteristics of Multi-Mode Fiber optic cable?
page 91 MMF - Provides high bandwidth at high speeds over medium distances (up to 3000ft, 100m) - Available in glass or plastic version - Immune to interference
What are the characteristics of Single-Mode Fiber optic cable?
page 91
SMF
- Laser or LEDs may be used
- Used for long runs, can transmit data 50x further tha Multi-Mode
How does UTP & STP cut down on magnetic interference?
page 92
By twisting pairs, it cuts down on the magnetic interference
What are the CAT Cables categories & their speeds?
page 93 CAT3 10Mbps CAT5 100Mbps CAT5e 1000Mbps CAT6 1000Mbps CAT6e 1000Mbps
What is a Vampire Tap?
page 94 A connect (device) that could be clamped onto a coaxial, thus piercing the coax & get the signal from the core.
With which device connections are crossover cables required T568A - T568B?
page 92 CROSSOVER - PC to PC - Router to Router - PC to Router
STRAIGHT
- PC to Switch
- Switch to Router
What is a T1 crossover cbale/
page 95
A cable that is used to connect one CSU/DSU to another, (channel service unit/data service unit)
If you have connections between building with fiber optic, what do you use?
page 97
- Single Mode Fiber is used between buildings
- Multi Mode Fiber is used in buildings
What is Broadband over Power Line?
page 98
A system that carries data on a conductor wire that is also used for electrical power transmission
What are the various types of Fiber optic connectors?
page 99
- ST
- SC
- LC
- MTRJ
What type of connectors are used with Copper Cables?
page 101
- RJ45
- RJ11
- BNC
- F-connector
- DB9
What is a patch panel used for?
page 104
- Typically a rack or wall-mounted structure that houses cable connections.
- Purpose to offer the administrator a way to change the path of a signal quickly when needed.
What is a 110 block?
page 104
- Newer type of distribution pint
- Used for RJ11 or RJ45 connections
What is T1/E1?
page 109
- T1 provides for 1.54 Mbps of dedicated bandwidth for customer, bandwidth can be used in total or divided up to as many as 24 channels called DSOs which are each 64Kbps
- E1 is Europe’s version of T1 similar but offers 32 DSOs for a total 2.048 Mbps
What are T3/E3/DS3?
page 109
T3 provides for 672 DSOs equivalent to 28T1s, 44.736Mbps (sometimes referred to as a DS3)
- E3 provides for n512 DSOs approximately 17 E1s or 34.368 Mbps
What is OC-x?
page 109 OC stands for "Optical Carrier", x indicates relative speed - OC => 50Mbps - OC3 => 150Mbps - OC3072 => 160GGbps
What is SONET?
page 109
Synchronous Optical Networking
- will push data at 150Gbps over fiber limks
- typically used by large communication providers
- provides an STS-1 link of 50Mbps bandwidth
- where as STS-3 would provide 150Mbps
What is DWDM?
page 110
Dense Wavelength Division Multiplexing
Is an optical technology used to increase bandwidth even further over existing fiber-optic backbones
What is HSPA+?
page 114
High Speed Packet Access+
- wireless broadband standard that is used by some vendors for access to the Internet on call phones & PDAs
- provides data link rates of approximately 84Mbps down & 22Mbps
What is PON?
page 115
Passive Optical Network
Is a point-to-multi-point fiber-to-premise network that allows a single fiber optic cable to serve multiple premise
What are LAN technologies types regarding Copper?
page 127 10BaseT Twisted Pair 10Mbps 100BaseT Twisted Pair 100Mbps 100BaseTX Twisted Pair 100Mbps 1000BaseT Twisted Pair 1Gbps 10GBaseT Twisted Pair 10Gbps
What are some common physical connectivity problems?
page 124
Crosstalk, Bad connectors, bad wiring, open short, split cables, DB loss, TxRx reversed, Cable placement, EMI/Interface, Distance
What are Packet Switch?
page 16
Each data packet might take a different route to its final destination during the same transmission
the original packet switch network call x.25
