OCN-Q10

1. What is the core diameter range for single-mode step-index fibers?

• A) 50-100 µm

• B) 10-50 µm

• 2-15 µm

• D) 100-200 µm

2. Which type of fiber typically exhibits lower dispersion?

• A) Single-mode step-index fiber

• B) Multimode step-index fiber

• C) Multimode graded-index fiber

• D) All exhibit the same dispersion

3. Which fiber type is most commonly used for long-distance communication?

• A) Multimode step-index fiber

• • B) Single-mode step-index fiber

• C) Multimode graded-index fiber

• D) None of the above

4. What is the primary advantage of multimode graded-index fibers over multimode step-index fibers?

• A) Higher bandwidth

• B) Larger core diameter

• C) Lower cost

• D) Easier to install

5.Which fiber type is more susceptible to modal dispersion?

• A) Single-mode step-index fiber

• B) Multimode step-index fiber

• C) Multimode graded-index fiber

• D) None of the above

6.In a multimode graded-index fiber, how does the refractive index change from the core to the cladding?

• A) It increases gradually

• B) It decreases gradually

• C) It remains constant

• D) It first increases then decreases

7.Which fiber type is generally used for short-distance data communication?

• A) Single-mode step-index fiber

• B) Multimode step-index fiber

• C) Multimode graded-index fiber

• D) None of the above

8.In multimode step-index fibers, which of the following is true regarding the light paths?

• A) All light rays follow the same path

• B) Light rays follow different paths but have the same travel time

• C) Light rays follow different paths with different travel times

• D) None of the above