Question 560
A network specialist investigates this evidence: A public service becomes unavailable under distributed volumetric traffic saturating the ISP link. Which underlying condition BEST explains the observed failure or requirement?
Explanation
Correct Answer
Incoming traffic volume exceeds upstream link capacity. Local firewalls cannot restore capacity already exhausted upstream.
Incorrect Answers
An intermediary may be intercepting or redirecting encrypted sessions. That does not establish incoming traffic volume exceeds upstream link capacity.
Limits on MAC learning reduce deliberate table exhaustion. That does not establish incoming traffic volume exceeds upstream link capacity.
Malware can move laterally through broadly trusted internal protocols. That does not establish incoming traffic volume exceeds upstream link capacity.






CompTIA Network+ (N10-009) Practice Tests