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10 Cards in this Set

  • Front
  • Back

Define Static IP Address

A static IP is one that is hand configured by a user or a network administrator. The person creating it must configure the IP address. the gateway and the network mask plus any special requirements for the network

Describe when a static IP is good and when it is bad.

A static ip is good for servers and printers that stay in one place all the time. This could be expanded to any desktop that stays in one place and people need to reach it from another computer.




It is bad for devices on the move, especially laptops or handhelds. WHen people move to other networks, their IP setting change by necessity.

What was the problem with bootp.


  1. It requried more configuration.
  2. Administrators had to hand delete IP addresses when a device was taken off the network.
  3. It doesn''t handle all the modern options needed in a Network

What is DHCP

Dynamic Host Configuration protocol. It is the way client computers receive and IP address all all the information needed to communicate on a Netwrok.

Name and describe the 4 steps DHCP does to give a computer an IP address.
  1. DHCPDISCOVER: When a client turns on, the computer sends a broadcast message on the network saying I need an IP address.
  2. DHCPOFFER: When a DHCP server it sends out an offer saying I can send you an IP address.
  3. DHCPREQUEST: When a client receives the FIRST OFFER, it sends a message back to the system saying I will take your information.
  4. DHCPACK: The chosen DHCP server sends an acknowledgement containing the IP address and the relevant information

What is APIPA, and how do you know it has happened.

Automatic Private IP Addressing. If a client does not recieve an IP address from a DHCP server, it creates one with and address 169.254.x.x and subnet mask of 255.255.0.0

What is a DHCP reservation

This is when a DHCP server permently binds an IP address to a MAC address. This gives a user the ability to configure their system to use DHCP while being guarenteed the same IP address when in the office.

What is the scope in DHCP

THis is the range of IP addresses that a server can allocate (hand out) to client computers.

What is a lease in DCHP

The time you are guarenteed to keep the same IP address after your computer is turned off or you are gone from the facility

What does renew do in DHCP

If your computer stays on, your reset the lease time.



  • For T1 it resets the time at 50% of the lease time. If your lease time is 8 days, it resets it to 8 days after 4 days.
  • T1 keeps trying up until 87.5% (7/8)of the lease time. Then it searches for a new DHCP server. If your lease time is 8 days, it searches on Day 7.