640-802 CCNA Study Guide - Elktech.org

Cisco 640-802 Exam
Answer: D
Explanation:
Current Ethernet technology typically comes via either copper UTP or fiber cables. In this scenario
the distance between the buildings is only 55 meters so either copper or fiber could be used, as
the distance limitation for 100M UTP Ethernet is 100 meters. However, fiber would be a better fit
as it is not prone to errors that could occur due to the voltage potential differences. Because fiber
is a dielectric material, it's not susceptible to electrical interference. FO-product vendors also claim
that fiber systems make secure communications easier. Interference immunity and lack of
emissions are givens in FO systems and in the fiber medium itself.
QUESTION NO: 310
Users have been complaining that their Frame Relay connection to the corporate site is very slow.
The network administrator suspects that the link is overloaded. Based on the partial output of the
Router# show frame relay pvc command shown in the graphic, which output value indicates to the
local router that traffic sent to the corporate site is experiencing congestion?
A. DLCI = 100
B. last time PVC status changed 00:25:40
C. in BECN packets 192
D. in FECN packets 147
E. in DE packets 0
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