________, which are products of the mind, can be quite valuable even though they may not always take on a physical form.

Paragraph spacing refers to the line spacing within a paragraph

Indicate whether the statement is true or false

When a node has not recently sent a frame to another node, how does the node discover the correct MAC address to use for the IPv4 address of the destination node?

a. The sender sends an IPv4 query to the destination node to ask the node for its MAC address. b. The sender broadcasts an ARP request. c. The sender monitors traffic until it discovers the correct MAC address to use. d. The sender transmits a TCP SYN to the destination node.