Chapter 19

Question 1

APIPA

Answer 1

APIPA
Automatic Private IP Addressing. A convention per RFC 3927 for a process and reserved set of IPv4 addresses (169.254.0.0/16) that hosts use when they need to use an IPv4 address but they fail to lease an IPv4 address using dynamic processes like DHCP.

Question 2

DHCP client

Answer 2

DHCP client
Any device that uses DHCP protocols to ask to lease an IP address from a DHCP server, or to learn any IP settings from that server.

Question 3

DHCP relay agent

Answer 3

DHCP relay agent
The name of the router IOS feature that forwards DHCP messages from client to servers by changing the destination IP address from 255.255.255.255 to the IP address of the DHCP server.

Question 4

DHCP server

Answer 4

Software that waits for DHCP clients to request to lease IP addresses, with the server assigning a lease of an IP address as well as listing other important IP settings for the client.

Question 5

DNS server

Answer 5

DNS server
An application acting as a server for the purpose of providing name resolution services per the Domain Name System (DNS) protocol and worldwide system.

Question 6

DNS server list

Answer 6

DNS server list
A list of IP addresses of DNS servers, known to an IP host, used by a host when sending DNS name resolution requests.