Which of the following four designs would provide some redundancy and increase reliability for all four sites, but would cost less than a fully redundant topology?

You work as a network technician at TestKing.com. You have been assigned the
task of designing a new TestKing internetwork. The main priority is the achieve the
highest reliability available, however not at all costs. TestKing.com is willing to
spend more dollars to avoid downtime caused by link failure.

A. Design TestKingA
B. Design TestKingB
C. Design TestKingC
D. Design TestKingD

Answer: B

Explanation:

You can think of the partial mesh Frame Relay design as the compromise between
network administrators and cost-saving managers.