RCDD 12TH EDITION CHAPTER 21
EXAM
Chapter 21 in the TDMM is devoted to Data Centers
Black 0- 5 questions
Data Centers What kind of Cabling is required? 100 OHM balanced Twisted
Pair Cat6 or higher recommended
unshielded, or shielded copper cable;
Multimode Optical Fiber cable OM3 40 gig and 100 gig Ethernet OVER OM3
or 50/125 laser -optimized multimode fiber will take 10 -and 20- optical fibers
for each circuit; Singlemode Optical fiber cable
75-ohm coaxial cable and connectors
Which fiber does not go in data center?
MM 62.5
ANSI/TIA 942 =
Standard for data centers
ANSI/TIA 569-B commercial building standards for telecommunications
pathways and spaces for data centers =
Total maximum pathway fill as 50 percent of total available pathway
Fiber patch cord pile up =
2 inches
TIA-942 recommended minimum overhead cable tray height =
9 feet A.F.F above finished floor
Keeping copper properly separated from power distribution cable =
EXAM
Chapter 21 in the TDMM is devoted to Data Centers
Black 0- 5 questions
Data Centers What kind of Cabling is required? 100 OHM balanced Twisted
Pair Cat6 or higher recommended
unshielded, or shielded copper cable;
Multimode Optical Fiber cable OM3 40 gig and 100 gig Ethernet OVER OM3
or 50/125 laser -optimized multimode fiber will take 10 -and 20- optical fibers
for each circuit; Singlemode Optical fiber cable
75-ohm coaxial cable and connectors
Which fiber does not go in data center?
MM 62.5
ANSI/TIA 942 =
Standard for data centers
ANSI/TIA 569-B commercial building standards for telecommunications
pathways and spaces for data centers =
Total maximum pathway fill as 50 percent of total available pathway
Fiber patch cord pile up =
2 inches
TIA-942 recommended minimum overhead cable tray height =
9 feet A.F.F above finished floor
Keeping copper properly separated from power distribution cable =
