Yes, there is activity; packets do not have to be generated for the sole purpose of carrying data. Some protocols, such as DHCP, or DNS, or ARP generate informational packets and are not carrying data. It is rare for a network to not transmit packets for long periods of time.
This is assuming that there is no outside access to the Ethernet network such as a Internet connection. If there were then firewalls would be needed to prevent a outside intrusion of the network. In addition to physical access security, a wireless network requires authentication and encryption to prevent unauthorized devices from connecting to the wireless network or capturing and decoding the data that is being transferred via a wireless network connection. If the wireless network has outside WAN access then you would also need firewalls as with the Ethernet network.
Is the layer that provides data routing paths for network communication. Data is transferred in the form of packets via logical network paths in an ordered format controlled by the network layer.
If computers are not connected to the internet at the same time over another cable or wireless, no it is not possible to see the data being transferred
If the data being transferred is infected, yes you can.
It signals to the network that its data was damaged in a collision, waits a brief period of time before checking the network for activity, and then retransmits the data.
The bandwidth of the network connection primarily determines the amount of data that can be transferred from one end to the other. Additionally, factors such as latency, network congestion, and packet loss can affect the efficiency of data transfer. It is also influenced by the protocols and technology used for communication.
It signals to the network that its data was damaged in a collision, waits a brief period of time before checking the network for activity, and then retransmits the data.
Physical and Data-link layers.Physical being layer 1 and Data-link being layer 2.
It signals to the network that its data was damaged in a collision, waits a brief period of time before checking the network for activity, and then retransmits the data.
Video editing and transferring those files over a network (e.g. to a NAS device or server) can use tremendous amounts of bandwidth and can slow down other network operations like file sharing, internet browsing, etc, while video data is being transferred across the network. Running a seperate network dedicated to video editing applications will ensure that your normal network does not become congested and slow while video data is being transferred across the network. Furthermore it allows you to ensure that the video network is being operated with the highest-grade networking technology available (e.g. gigabit, 10 gigabit, fiber optic, etc) without having to upgrade the entire network. The third advantage that I can see is security. A seperate physical network is much more difficult to intrude upon than a subnetwork that's part of a larger physical connection of cables and switches.
Through a network. One example of a hardwired connection is called an Ethernet connection. Data can also be transferred through a wireless network by the use of a wireless router.
Data can be transferred through physical means like using a USB drive or external hard drive, through network transfer such as Ethernet or Wi-Fi, and through the internet using cloud services or email.