Fiber optic cables are essential components in modern data transmission infrastructure. They support high-speed, interference-resistant communication and are particularly effective in applications that require high bandwidth, low latency, and strong signal integrity. Essentially, OSNR measures the power ratio between the optical signal and the background noise across the communication channel, expressed in decibels. FTTX networks are a generalization for different configurations of fiber deployment. Fiber can be deployed all the way to the premises (FTTB – Fiber to the Building, FTTH – Fiber to the Home), where Ethernet or coaxial cables are used for the final connection. Alternatively, fiber can reach a. E/O converters use light-emitting elements such as semiconductor lasers, O/E converters use light-receiving elements such as photodiodes, and optical elements such as lenses are used at the input and output of optical fiber. It also known as an optical fiber where the signals are digital pulses or continuously modulated analog streams of l ght to representing information. These can be voice information, data information, computer information, video information, r any other type of. This paper presents how different tests of throughput and latency were carried out using Viavi test kit, analyzed and then after compared the obtained results with the standard defined by IEEE and ITU for conformity. Unlike traditional copper or.