Cisco 300-115 Study Material

300-115 Question 3

What percentage of bandwidth is reduced when a stack cable is broken?


A.  0
B.  25
C.  50
D.  75
E.  100

Correct Answer: C
Explanation/Reference:
Physical Sequential Linkage
The switches are physically connected sequentially, as shown in Figure 3. A break in any one of the cables will result in the s tack bandwidth being reduced to half of its full capacity. Subsecond timing mechanisms detect traffic problems and immediately institute failover. This mechanism re stores dual path flow when the timing mechanisms detect renewed activity on the cable.
Figure 3. Cisco StackWise Technology Resilient Cabling

Reference: http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3750-series-switches/prod_white_paper09186a00801b096a.html