help me explain about SPI signal from oscciloscope,,

my teacher ask me to measure SPI pin of arduino using osciloscope and explain it. i have measure it and got the clock, mosi, and miso signal. i think the signal shows 00000011 and 00000000 on MOSI and 11111111&00000111 on MISO. but i dont know how to explain it, what’s that signal means.

i use code from ethernet example that shows a web page. i have connected my arduino&ethernetshield to router

Take a look at Nick Gammon's page for a good explanation of what you are seeing.