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Ethernet Cabling

Ethernet cabling is an important discussion, especially if you are planning on taking the Cisco exams. Three types of Ethernet cables are available:

  • Straight-through cable
  • Crossover cable
  • Rolled cable

Straight-Through Cable


The straight-through cable is used to connect the following:

  • Host to switch or hub
  • Router to switch or hub


Crossover Cable


The crossover cable can be used to connect the following:

  • Switch to switch
  • Hub to hub
  • Host to host
  • Hub to switch
  • Router direct to host

Rolled Cable

 

Although rolled cable isn’t used to connect any Ethernet connections together, you can use a rolled Ethernet cable to connect a host to a router console serial communication (com) port.

 

If you have a Cisco router or switch, you would use this cable to connect your PC running HyperTerminal to the Cisco hardware. Eight wires are used in this cable to connect serial devices, although not all eight are used to send information, just as in Ethernet networking.


Untitled Document
CCENT Practice Exam Questions
A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
Send a different source port number.
Restart the virtual circuit.
Decrease the sequence number.
Decrease the window size.
A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.
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