Saturday, November 24, 2007

Networks: Assigning IP addresses

A Windows 2000 computer is configured to receive its IP address automatically. You check the computer's IP address and it is 169.254.10.1.
What does this indicate?

1. The DNS server is failing.
2. The computer cannot load the TCP/IP protocol.
3. The computer received a valid address.
4. >>The DHCP server is failing. -->Correct

Explanation : The most likely cause is that either the Dynamic Host Configuration Protocol (DHCP) server is failing or that the computer is unable to connect with the DHCP server. An address of 169.254.10.1 is one that is generated automatically by the computer when it is unable to lease an address from the DHCP server. This is referred to as an Automatic Private IP Addressing (APIPA) address. An APIPA address is generated automatically by a computer configured for automatic IP addressing if the computer is unable to contact the DHCP server to lease an IP address.

The problem is not related to the Domain Name Service (DNS) server. The DNS server maintains a table of computer names and IP addresses. It manages IP address resolution for the network.

The computer did not receive a valid address. An APIPA address is generated automatically by the computer when it is not able to receive a valid address from the DHCP server.

The problem is not that the computer cannot load the TCP/IP protocol. If the computer were unable to load the TCP/IP protocol, it would not be able to report an IP address.
Objective: Networks