Which of the following is the most likely cause of the issue?

A database administrator set up a connection for a SQL Server instance for a new user, but the administrator is unable to connect using the user’s workstation.

Which of the following is the most likely cause of the issue?
A . The SQL Server codes are performing badly.
B . The SQL Server has not been tested properly.
C . The SQL Server ports to the main machine are closed.
D . The SQL Server has many concurrent users.

View Answer

Answer: C

Explanation:

The most likely cause of the issue is that the SQL Server ports to the main machine are closed. SQL Server uses TCP/IP ports to communicate with clients and other servers. If these ports are blocked by a firewall or other network device, the connection will fail. The administrator should check the port configuration on both the server and the user’s workstation, and make sure that they are open and match the expected values. The other options are either unlikely or unrelated to the issue. For example, the SQL Server codes performing badly or having many concurrent users may affect the performance or availability of the server, but not prevent the connection entirely; the SQL Server not being tested properly may cause errors or bugs in the functionality or security of the server, but not affect the connection unless there is a configuration problem.

Reference: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.3 Given a scenario, troubleshoot common database deployment issues.