Lesson 1: FTTx Basics

What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topologies?

An FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises. An FTTC is allowed a larger number of RF amplifiers between the optical fiber and the customer premises. An FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises. An FTTC is allowed a larger number of RF splitters between the optical fiber and the customer premises. An FTTC is allowed a smaller number of RF splitters between the optical fiber and the customer premises.

Heat shrink tubing is installed over the fusion-splice to strengthen and protect

Before stripping the plastic coating from the fiber. Before stripping the plastic coating from the fiber. After stripping the plastic coating from the fiber, but before wiping the residue from the glass. Immediately after cleaving the fiber. After the fibers are fused.

What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once?

Changing the infrastructure all at once would cause too many service disruptions. Changing the infrastructure all at once would cause too many service disruptions. Changing the infrastructure all at once would require too many new drops to be created. Changing the infrastructure all at once would create excessive network congestion. Changing the infrastructure all at once would put a strain on equipment manufacturers.

Which type of star topology used in a passive optical network (PON) places the PON splitters into fiber access terminal (FAT) located deep in the network and closer to the customer premises than the centralized split?

Distributed star Star-bus. Home-run. Centralized split. Distributed star.

Which of the following describes a fiber pigtail?

Fiber-optic cable with pre-connectorized ends Fiber-optic cable with pre-connectorized ends. Optical fibers protruding from the end of a cable. Drop fiber that is not connectorized. The dielectric strength member in an aerial fiber-optic cable.

How are optical splitters used in the forward path?

In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple output fibers. In the forward path, optical splitters are used as active devices that combine multiple signals onto a common optical fiber. In the forward path, optical splitters are used as passive combining devices that stream an optical signal across two common fibers. In the forward path, optical splitters are used as active devices that split one signal on an optical fiber into multiple signals. In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple output fibers.

Which element of a passive optical network (PON) uses patch panels?

Optical distribution network (ODN) Optical distribution network (ODN). Optical network terminal (ONT). Optical network unit (ONU). Optical line terminal (OLT).

Which element of a passive optical network (PON) uses a Bragg grating filter?

Optical line terminal (OLT). Optical network terminal (ONT). Optical network unit (ONU). Optical distribution network (ODN). Optical line terminal (OLT).

Which of these components is used in a passive optical network (PON)?

Optical splitters. Optical nodes. Amplifiers. Status monitoring equipment. Optical splitters.

What is it about radio frequency over glass (RFoG) that made broadband cable operators envision using it to make a seamless transition from the legacy hybrid fiber/coax (HFC) architecture over to a gigabit-capable passive optical network (GPON) or Ethernet passive optical network (EPON)?

RFoG can operate in parallel with GPON or EPON, which eliminates the need for any downtime during the transition. RFoG can operate in parallel with GPON or EPON, which eliminates the need for any downtime during the transition. RFoG utilizes fiber-to-the-feeder topologies, which many new-built communities require. RFoG controls and communicates directly with the optical network unit (ONU), which eliminates the need for middleware. RFoG does not require any changes to be made to the physical structure of the network, which is cost-effective.