ANSWERS TO QUESTIONS Q1. THROUGH Q17.

A1. Linear bus, ring, star, and tree topologies.
A2. Ring.
A3. Star.
A4. The process of varying one or more characteristics of an optical signal to encode and convey information.
A5. A discontinuous signal that changes from one state to another in discrete steps.
A6. Binary 1.
A7. If long strings of 1s or 0s are present causing a lack of level transitions.
A8. A half-period optical pulse present in the first half of the bit duration.
A9. Binary 0.
A10. A continuous signal that varies in a direct proportion to the instantaneous value of a physical variable.
A11. Intensity modulation.
A12. Because cost can be minimized and complex multiplexing and timing equipment is unnecessary.
A13. Because fiber optic systems that incorporate complex architectures can be simplified into a collection of point-to-point data links before beginning the design process.
A14. Launch power, connection losses, bandwidth, cost, and reliability.
A15. Power budget and risetime budget.
A16. Minimum bend radius.
A17.

• Never bend an optical fiber or cable at a radius of curvature less than the minimum bend radius.
• Never pull fiber optic cables tight or fasten them over or through sharp corners or cutting edges.
• Always clean fiber optic connectors before mating.
• Do not kink or crush fiber optic cable during installation of the hardware.
• Allow only trained, authorized personnel to install or repair fiber optic systems.