Cisco Certified Network Associate (200-301 CCNA) – Question075


Refer to the exhibit. Shortly after SiteA was connected to SiteB over a new single-mode fiber path, users at SiteA report intermittent connectivity issues with applications hosted at SiteB. What is the cause of the intermittent connectivity issue?

A. Interface errors are incrementing.
B. High usage is causing high latency.
C. An incorrect SFP media type was used at SiteA.
D. The sites were connected with the wrong cable type.

Correct Answer: A

Explanation:

Explanation:
The only indicator of any issues here is the reliability 166/255 on SiteA. When the input and output errors increase, they affect the reliability counter. This indicates how likely it is that a packet can be delivered or received successfully. Reliability is calculated like this: reliability = number of packets / number of total frames.
The value of 255 is the highest value meaning that the interface is very reliable at the moment. The calculation above is done every 5 minutes.