WANs that need to interconnect a very large number of sites.
A. bus
B. two-tiered
C. three-tiered
D. ring
Answer:C
WANs that need to interconnect a very large number of sites.
A. bus B. two-tiered C. three-tiered D. ring
Explanation: Wide Area Networks that need to interconnect a very large number of sites, or are built using smaller routers that can support only a few serial connections, may find the two-tiered architecture insufficiently scalable.