Lesson 21- Manage Basic Network Settings

Question 1

What is a media access control (MAC) access?

Answer 1

a unique identifier of a physical network interface on a local network

Question 2

How are Internet Protocol (IPv4) addresses constructed?

Answer 2

32-bit number represented in four groups of three digit numbers, known as octets saved by periods. Each octet has a value between 0 and 255

Question 3

What’s the purpose of IPv4 addresses and subnet masks?

Answer 3

identifies the location of a network device

Question 4

What is the default protocol macOS uses to get an IP address?

Answer 4

Dynamic Host Configuration Protocol (DHCP)

Question 5

How does the IP transfer messages between computers over a wide are network (WAN)?

Answer 5

A network client uses the subnet mask to determine whether the destination IP is on the LAN. If it isn’t, the client assumes the address is on another network and it sends the data to the IP address of the local network router. The network router then sends the data through a WAN connection to another router that it thinks is closer to the destination.

Question 6

How is the DNS used to facilitate network naming?

Answer 6

is used to resolve a DNS name to the corresponding IP addresses

Question 7

What’s used to identify a Wi-Fi network?

Answer 7

Service Set Identifier (SSID)

Question 8

Which Wi-Fi authentification protocols are supported by Catalina?

Answer 8

• wired Equivalent Privacy (WEP)

- Wi-Fi protected Access (WPA/WPA2

Question 9

How can Catalina automatically connect to a wi-fi network?

Answer 9

connects to wi-fi that have no standard authentification mechanism