Which statement about the fiber coating is true?

Which statement about the fiber coating is true?

• A. Protect, identify, and strength
• B. Protect, identify, and strengthen
• C. Thermal insulation
• D. Color coding

Answer: (A)

The coating on an optical fiber serves three main roles: it protects the fragile glass fiber from moisture, abrasion, and microbending; it helps identify the fiber through color coding; and it adds mechanical strength so the fiber can withstand handling, bending, and termination without breaking. This combination—protection, identification, and increased durability—best describes the coating’s function, making it the most complete and accurate choice. Thermal insulation isn’t the primary purpose of the coating, and color coding by itself doesn’t convey the full protection and strength the coating provides. The option that mentions protection, identification, and strengthening captures the essential functions the coating is designed to deliver.

The coating on an optical fiber serves three main roles: it protects the fragile glass fiber from moisture, abrasion, and microbending; it helps identify the fiber through color coding; and it adds mechanical strength so the fiber can withstand handling, bending, and termination without breaking. This combination—protection, identification, and increased durability—best describes the coating’s function, making it the most complete and accurate choice.

Thermal insulation isn’t the primary purpose of the coating, and color coding by itself doesn’t convey the full protection and strength the coating provides. The option that mentions protection, identification, and strengthening captures the essential functions the coating is designed to deliver.