Network Communication and Wireless Flashcards
What is unicast
one to one transfer of information between two systems
Web surfing, file transfer
does not scale
What is multicast
used when ONE device needs to send to MANY of MANY devices, which subscribe to information feed.
Very specialized
What is anycast
used when ONE device needs to send information to ONE of MANY devices
what is a broadcast
ONE to ALL relationship, everyone on network receives, limited to broadcast domain
best for routing updates or ARP requests
What is 802.11?
the standards associated with wireless networking
What is the order of IEEE 802.11 standards?
802.11a
b
g
n WiFi 4
ac WiFi 5
ax WiFi 6 and 6E
be WiFi 7
What impact has 5G had on IoT Devices?
larger data transfers, faster monitoring, additional cloud processing, etc.
Satellite Networking
High cost relative to terrestrial networking
Relatively high latency, although starlink is advertising better latency
High frequency, line of sight, rain fade