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MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

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<strong>Exam</strong> Highlights<br />

Key Points<br />

Key Terms<br />

<strong>Exam</strong> Highlights<br />

13-47<br />

Before taking the exam, review the key points and terms that are presented in this<br />

chapter. You need to know this information.<br />

■ Learn the IP address ranges that fall into each of the major classes (A, B, and C)<br />

and the default subnet mask for each class. This information will not only help<br />

determine how a classful IP addressing scheme will apply to a situation, but also<br />

how to customize a scheme using the classless method.<br />

■ If you are troubleshooting a network problem and discover that a client computer<br />

has an IP address on the 169.254.0.0 network, the computer has assigned itself<br />

that address using APIPA because the computer could not locate a DHCP server.<br />

■ Understand the various options available with the Ipconfig command. In particular,<br />

you should remember the following: /renew causes the computer to release<br />

and then attempt to renew an IP address lease from a DHCP server; /release<br />

causes the computer to release its IP address lease and not attempt to renew that<br />

lease; and /flushdns purges the local DNS cache.<br />

Automatic Private IP Addressing (APIPA) A feature that allows Windows XP Professional<br />

to assign itself an IP address should the computer not be able to locate<br />

a DHCP server. Addresses in the range 169.254.0.0 through 169.254.255.255 are<br />

reserved for APIPA.<br />

Domain Name System (DNS) A service that resolves domain names to IP addresses.<br />

Dynamic Host Configuration Protocol (DHCP) A protocol for assigning IP<br />

addresses automatically to hosts on a TCP/IP network.<br />

host ID The portion of an IP address that identifies the network segment on which<br />

a host is located.<br />

IP address A 32-bit binary address (usually represented as four decimal numbers<br />

ranging from 0 to 255) that uniquely identifies a network interface on a TCP/IP<br />

network.<br />

Ipconfig A command-line tool that allows you to view current TCP/IP configuration<br />

information for a computer.<br />

loopback address A special reserved IP address that represents the local computer.<br />

network ID The portion of the IP address that identifies a particular host on a network<br />

segment.

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