Data centers and wireless networks are two of the largest and fastest growing fiber optic applications. Both are rapidly evolving to meet customer needs. What’s your knowledge of today’s data centers? Answers are on page 103. To take the quiz electronically, visit ecmag.com.
Created by: Jim Hayes
1. Today, “data center” refers to _____.
A. Corporate computer rooms
B. Multitenant hosting sites
C. Hyperscale internet storage and serving sites
D. All of the above
2. Large hyperscale data centers are already running networks at _____ or are planning to do so soon.
A. 10 Gbps (gigabits per second)
B. 40 Gbps
C. 100 Gbps
D. 1 Tbps (terabits per second)
3. Hyperscale data centers may have more than _____fiber connections.
4. Most hyperscale networks use _____ fiber for its current capacity and future use at higher speeds.
A. OM3 multimode
B. OM4 multimode
C. OM5 multimode
D. OS2 single-mode
5. Multimode fiber for network speeds above 10 Gbps have until recently required using _____.
A. 850 nanometers (nm) VCSELs
B. 850 nm VCSELs and parallel optics over multiple fibers
C. 1,300 nm lasers
D. 1,550 nm lasers
6. A new type of multimode fiber, OM5, has been introduced to allow using wavelength-division multiplexing (WDM) with 850–950 nm VCSELs.
7. Data centers were a proving ground for the new type of product called a _____ that has become very popular everywhere.
A. SOC—splice-on connectors
B. Multicore fiber
C. Superflex cables
D. Expanded beam connector
8. The large number of connections needed in large data centers has led to the introduction of cables with fiber counts as large as _____ fibers.
9. Installing high fiber count cables has required many installers to learn an installation technique called ribbon or mass fusion splicing.
10. Technologies that were introduced specifically for data centers that have not been widely accepted include _____.
A. Short wavelength WDM on OM5 fiber
B. Category 8 UTP cable
C. 40 gigabit ethernet