Network Communication and Wireless

Question 1

What is unicast

Answer 1

one to one transfer of information between two systems

Web surfing, file transfer
does not scale

Question 2

What is multicast

Answer 2

used when ONE device needs to send to MANY of MANY devices, which subscribe to information feed.

Very specialized

Question 3

What is anycast

Answer 3

used when ONE device needs to send information to ONE of MANY devices

Question 4

what is a broadcast

Answer 4

ONE to ALL relationship, everyone on network receives, limited to broadcast domain

best for routing updates or ARP requests

Question 5

What is 802.11?

Answer 5

the standards associated with wireless networking

Question 6

What is the order of IEEE 802.11 standards?

Answer 6

802.11a
b
g
n WiFi 4
ac WiFi 5
ax WiFi 6 and 6E
be WiFi 7

Question 7

What impact has 5G had on IoT Devices?

Answer 7

larger data transfers, faster monitoring, additional cloud processing, etc.

Question 8

Satellite Networking

Answer 8

High cost relative to terrestrial networking
Relatively high latency, although starlink is advertising better latency
High frequency, line of sight, rain fade