This paper examines challenges faced by network administrators with respect to detecting and identifying faulty network components like cables or nodes in a computer network environment. Several research works on techniques used in building fault detection and identification mechanisms for local area networks reviewed. Dependency matrix was used in designing and building the active probing station internal mechanism for the fault detection and identification. The proposed system was tested in a non-production computer network, and the test results revealed that the proposed system is able to detect and identify faulty node/link is 0.22 seconds based on the processor speed and memory capacity. The proposed system is recommended for usage in any local area network.