OSI Layer 1 - Physical Layer

Question 1

Layer 1 Overview

Answer 1

Conveys the bitstream (electrical impulse, light, or radio signals) through the network at the electrical/mechanical level

Provides the hardware means of sending/receiving data
(Defining cables, interface cards, & physical aspects)

Question 2

Straight-Through Cable

Answer 2

Connect an end device (PC/router) to a switch

Question 3

Crossover Cable

Answer 3

Connect two similar devices together

Question 4

Auto MDI-X

Answer 4

Receive/transmit signals are reconfigured automatically

Question 5

Single Mode vs. Multi Mode Fiber

Answer 5

Single mode has higher bandwidth and longer distances, but is more expensive than multi mode