To arrange the records in descending order, you must ____.

What is the primary purpose of the ARP protocol?

A) ARP is a predecessor to DNS and is still sometimes used to resolve names to IP addresses. B) ARP resolves the IP address of a host on the local LAN to the host's MAC address. C) ARP is used to determine whether an IP address is already in use before assigning an IP address via DHCP D) ARP is used with NAT/PAT to allow for address translation and resolution E) To determine whether a node on the network is using IPv4 or IPv6

What is used to start accessing a linked chain of nodes?

a. The head pointer b. item[0] c. item[1] d. The null pointer