Chapter 13 - Network Troubleshooting

Question 1

Black-hole router

Answer 1

A router that drops packets that cannot be fragmented and are exceeding the MTU size of an interface without notifying the sender.

Question 2

Decibel (dB) loss

Answer 2

A loss of signal power. If a transmission’s dB loss is too great, the transmission cannot be properly interpreted by the intended recipient.

Question 3

Maximum transmission unit (MTU)

Answer 3

The largest packet size supported on an interface.

Question 4

Open

Answer 4

A broken strand of copper that prevents current from flowing through a circuit.

Question 5

Short

Answer 5

A short occurs when two copper connectors touch each other, resulting in current flowing through that short rather than the attached electrical circuit, because the short has lower resistance.

Question 6

Trouble ticket

Answer 6

A problem report explaining the details of an issue being experienced in a network.