What is a MAC Address? Flashcards
Where are MAC Addresses assigned?
On each NIC, Network Interface Card.
What’s another name for a MAC Address?
Physical Address or Burnt In Address or Hardware Address
What is MAC Address stand for?
Media Access Control Address.
How long is a MAC Address?
12 Hexadecimal digits or 48 Binary digits
How many bits does it take to create one hexadecimal digit?
Four binary bits or four 1 and 0’s .
How are MAC Addresses ID’d?
First half is Original Equipment Manufacturer
Second half is Unique ID
Where can we look to find who made a NIC?
macvendors.com
What command would we use to check a MAC Address on any NIC?
Windows: Ipconfig / all, Apple/Linux: ifconfig
What does a frame include?
Source MAC Address, Destination MAC Address, CRC (Cyclic Redundancy Check)
Where does the Source and Destination Address get put onto the frame?
On the Front/Header of the frame.
Where does the CRC get put onto the frame?
On the back/tail-end of the frame.
What is the CRC?
Cyclic Redundancy Check checks all the bits and makes sure the frame is good and the bits are all there.
How does a Frame look from a high level?
MAC Header – Data/Payload – CRC
