Exam Highlights

Before taking the exam, review the key topics and terms that are presented in this chapter. You need to know this information.

Key Points

• If you are troubleshooting a network problem and discover that a client computer has an IP address on the 169.254.0.0 network, the computer has assigned itself that address using APIPA because the computer was unable to locate a DHCP server.

• For the exam, make sure that you understand how to enable automatic configuration of DNS servers and where you will go to specify particular DNS servers.

• You should know where ICF log files are stored, whether logging is available, and what kind of information you can learn from log files.

Key Terms

Automatic Private IP Addressing (APIPA) A method of automatically assigning an IP address to a computer when either no address is assigned or no DHCP server is available.

default gateway The router to which the TCP/IP client will forward packets destined for computers on other networks.

Domain Name System (DNS) A network service designed to perform name resolution for TCP/IP clients.

Dynamic Host Configuration Protocol (DHCP) A service that automatically handles requests for TCP/IP configuration information to client systems.

IP address A number that uniquely identifies a device on a TCP/IP network.

Ipconfig A command-line utility that can be used to view TCP/IP configuration information.

loopback address An address that is used for testing TCP/IP configuration and that cannot be assigned to individual devices on a TCP/IP network. Normally it is 127.0.0.1.

NetBIOS name A 16-character name assigned to a computer that is used by NetBIOS applications when establishing connections.

Pathping.exe A command-line utility that is used to trace routes across a series of networks, combining the features of Ping and Tracert.

Ping A command-line utility for testing basic TCP/IP communications.

Remote Assistance A service that enables users to request support from a more advanced user or from computer support personnel.

Remote Desktop A process that enables users to remotely access their computers across the network and use the desktop as if they were sitting in front of the computer.

subnet mask A method of separating the network portion of an IP address from the host portion of an IP address.

Tracert.exe A utility used to follow the communication path from router to router between the source and destination hosts.

Windows Internet Naming Service (WINS) A service that runs on one or more Windows NT, Windows 2000, or .NET servers in the network.