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Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
A systems administrator is setting up a new server that will be used as a DHCP server. The administrator installs the OS but is then unable to log on using Active Directory credentials. The administrator logs on using the local administrator account and verifies the server has the correct IP address, subnet mask, and default gateway. The administrator then gets on another server and can ping the new server. Which of the following is causing the issue?
Correct Answer: D. The server is not joined to the domain
The administrator cannot log on with Active Directory credentials because the new server has not been joined to the domain. Even with correct IP settings and network connectivity, the server must be properly joined to the Active Directory domain to authenticate users against it. Without domain membership, AD credentials cannot be used for login, which explains the issue despite successful pings and correct network configuration.
Why Other Options are Incorrect:
A. Port 443 is not open on the firewall
Port 443 is typically used for HTTPS traffic, not for domain join or authentication processes. Domain joining and Active Directory authentication primarily rely on other ports like 389 (LDAP) and 88 (Kerberos), so blocking port 443 would not prevent domain login.
B. The server is experiencing a downstream failure
A downstream failure implies problems with devices or services further along the network path, but the server is reachable via ping, indicating network connectivity is intact. The issue is related to domain membership, not downstream network failures.
C. The local hosts file is blank
A blank hosts file does not cause failure to join a domain or authenticate with AD. Problems arise if the hosts file contains incorrect entries, but an empty file simply means no overrides, which is not a cause for this issue.
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