For several hours now,your IT staff has been trying to troubleshoot an issue on AppSrv1.AppSrv1 uses an application that requires it to access an SQL database on a server named DBSrv1 but recent changes in the network topology have outdated previous DNS entries.Initially,the problem is believed related to the DNS database,but after using nslookup,you find that the DNS entry is correct.AppSrv1 can reach the DBSrv1 server manually by IP address,but when using a name,it resolves to the wrong machine.
What is most likely the issue?
A)AppSrv1 has a static route entry to DBSrv1
B)nslookup was pulling from the correct DNS server,but the computer is configured with the wrong DNS server
C)A conditional forward zone has not been set up properly
D)Someone added a static entry for DBSrv1 in the hosts text file,which is now outdated

Question

Quizplus · Accepted Answer

The fact that AppSrv1 can reach DBSrv1 by IP address but not by name suggests that the issue is related to name resolution. The fact that the DNS entry is correct and that nslookup is using the correct DNS server suggests that the issue is not with the DNS database or the DNS server configuration. The most likely explanation is that someone added a static entry for DBSrv1 in the hosts text file, which is now outdated and causing the name resolution to fail.

For Several Hours Now,your IT Staff Has Been Trying to Troubleshoot