Cisco Chapter 4 part 2
Duplex Multimode LC Connectors
A smaller version of the fiber-optic SC connector. It is sometimes called a little or local connector and is quickly growing in popularity due to its smaller size.
LC Connectors
A smaller version of the fiber-optic SC connector. It is sometimes called a little or local connector and is quickly growing in popularity due to its smaller size.
Most common network media
UTP
Ethernet Straight-through
Both ends T568A or T568B
Rollover
Cisco Propietary
Attaches antennas to wireless devices - can be bundled with fiber-optic cabling for two way data transmission
Coaxial
Multimode Fiber -MMF
Consists of a larger core and uses LED emitters to send light pulses. Specifically, light from an LED enters the multimode fiber at different angles, as shown in Figure 2. Popular in LANs because they can be powered by low-cost LEDs. It provides bandwidth up to 10 Gb/s over link lengths of up to 550 meters.
SMF - Single Mode Fiber
Consists of a very small core and uses expensive laser technology to send a single ray of light, as shown in Figure 1. Popular in long-distance situations spanning hundreds of kilometers, such as those required in long haul telephony and cable TV applications.
Ethernet Crossover
One end T568A and other end T568B
SC Connectors
One of the first connector types used. The connector locks securely with a "twist-on/twist-off" bayonet style mechanism.
ST Connectors
One of the first connector types used. The connector locks securely with a "twist-on/twist-off" bayonet style mechanism.
Data Link Layer
Prepares network data for the physical network
Counters EMI and RFI by using shielding techniques and special Connectors
STP
The new Ethernet 10GB standard uses this form of copper media
STP
Logical Link Control (LLC)
This upper sublayer communicates with the network layer. It places information in the frame that identifies which network layer protocol is being used for the frame.
Terminates with BNC, N type and F type connectors
coaxial
Media Access Control (MAC)
his lower sublayer defines the media access processes performed by the hardware. It provides data link layer addressing and access to various network technologies.
