Network Hardware

What does a MAC address uniquely identify?

• The internet connection of a user

• A computer on the internet

• A device's network interface card (NIC)

• A wireless access point

What is the format of a MAC address?

• 4 decimal numbers separated by dots

• 6 pairs of hexadecimal digits separated by colons or hyphens

• 8 binary digits separated by commas

• 4 groups of alphanumeric characters separated by spaces

Where is the MAC address stored?

• In the hard drive of the computer

• In the CPU

• In the RAM

• In the firmware of the network interface card

Which of the following best describes a MAC address?

• Temporary and changes frequently

• Permanent and globally unique

• Assigned manually every time a device connects

• Based on the user's IP address

Why might a MAC address be changed or 'spoofed'?

• To update the device's firmware

• To avoid malware

• To bypass MAC address filtering or for privacy

• To speed up the internet connection

Which of the following is a valid MAC address?

• 192.168.1.1

• 00:1B:44:11:3A:B7

• 255.255.255.0

• 1234-5678-9012

How many bits are in a MAC address?

• 16

• 32

• 48

• 64

Which of the following is a characteristic of a MAC address?

• It can be used to determine the geographic location of a device

• It changes every time the device connects to a different network

• It is a fixed, unique identifier assigned to a network interface card

• It is always assigned by the network administrator

What does the first half of a MAC address usually represent?

• The IP address of the router

• The serial number of the device

• The model number of the computer

• The manufacturer of the network interface card

What does the second half of a MAC address typically represent?

• The country where the device was made

• The device's manufacturer again

• The unique serial number assigned by the manufacturer

• The encryption key for the device