Computer network architecture, protocols, and connectivity. Internet services and online culture remain in Internet.
Test your knowledge with these top questions!
What do Internet Protocol addresses identify on a network?
Like street addresses for mail, IP addresses tell data packets where to go on a network.
When using TCP, how does a receiving computer rebuild a message sent in packets?
When TCP is used, sequence numbers restore data order and retransmissions replace data lost in transit.
What job does Internet Protocol perform for internet data?
IP handles addressing while TCP resends lost packets, splitting delivery duties between the two protocols.
What do the bars on a phone's Wi-Fi icon indicate?
More bars mean a stronger radio link to the router, which usually supports faster and steadier downloads.
Which format does a typical IPv4 Internet Protocol address use?
A familiar example is 192.168.0.1, an address often used by home routers on local networks.
Which Wi-Fi band reaches farther through walls in a home?
Lower-frequency radio waves travel farther and pass through obstacles better than higher-frequency bands.
What does an Ethernet switch do in a wired network?
A switch forwards known unicast traffic to the correct port; broadcasts are sent to multiple ports.
How can packet switching get a message past a failed link when another route is available?
Routers can change paths when a link fails, so packets from one message need not all follow the same route.
What kind of connection does Ethernet typically provide to home computers?
Wired Ethernet often gives faster, steadier speeds than Wi-Fi, which is why gamers and offices still plug in.
What does tapping forget on a saved Wi-Fi network do?
The phone drops the stored password and settings, so it stops joining that network automatically.