Assigning IP addresses

Question 1

What was the Bootstrap Protocol?

Answer 1

A precursor to DHCP. Designed in 1993 to automatically assign IP addresses. Also referred to as BOOTP. Didn’t assign everything automatically. Also didn’t know when an IP would be available again.

Question 2

What is DORA?

Answer 2

The four step process of DHCP.

Question 3

What is the D in DORA?

Answer 3

Discover. This is when the device locates the DHCP server that’s on our local network.

Question 4

What is the O in DORA?

Answer 4

Offer. this is where the DHCP server will offer an IP address to our device.

Question 5

What is the R in DORA?

Answer 5

Request. Our device will then look at the one of many offers, pick one of the offers and then request that IP address from the DHCP server.

Question 6

What is the A in DORA?

Answer 6

Acknowledge. Finally the DHCP server will acknowledge that offer and provide your system with all of the IP configuration settings that it needs.

Question 7

What are some ways to obtain a fixed IP address?

Answer 7

1. disable the DHCP on the device and then configure IP information manually.
2. configure IP reservation on the DHCP server. This means that we configure a MAC address of a specific device and tell our DHCP server every time it sees that MAC address, it will always provide it with this reserved IP address.

Question 8

What is APIPA?

Answer 8

Automatic Private IP Addressing. a function of the windows OS that enables a DHCP client to automatically assign an IP address when there is no DHCP server available to perform that function.

Question 9

What is an ARP request?

Answer 9

Address Resolution Protocol. used for discovering the link layer address such as a MAC address.