Exam SY0-601 topic 1 question 294 discussion

The router is experiencing a resource exhaustion issue. The output from the command indicates that the CPU is consistently busy, with a 1-second average of 99 percent busy and a 1-minute average of 83 percent busy. This indicates that the router is struggling to keep up with the demands placed on it, potentially due to a high volume of traffic or other factors. As a result, web pages are experiencing long load times. This is an example of resource exhaustion, where the router's resources are being overwhelmed and are unable to meet the demands placed on them. A DDoS attack, memory leak, or buffer overflow would not typically cause the symptoms described in the scenario.

It could be Resource Exhaustion or DDoS(causing resource exhaustion). I understand why Resource Exhaustion is a viable option but nobody has explained why DDoS is not correct. In the case of DDoS, I am assuming that the router could possibly not be the target, and that's why Resource Exhaustion is a better answer than DDoS.

I got a similar question from a guide that I have and the answer is like this: A is correct. CPU usage averaging 98 percent indicates resource exhaustion. The scenario doesn’t indicate the cause of the increased usage, so resource exhaustion is the best answer. A distributed denial-of-service (DDoS) attack could cause this. However, a surge in traffic from an effective marketing campaign sent via email could also cause a surge in resource usage. A buffer overflow attack is a type of DDoS attack, but the scenario doesn’t give enough information to indicate a buffer overflow attack has taken place. The scenario only mentions CPU usage, so there isn’t any indication of a memory leak.

It could be memory leak. In dragon age origins, due to memory leaks, load times were getting longer and longer. It does mention load times here.

is resource exhaustion not a denial of service😕

the router is experiencing resource exhaustion. The high CPU utilization indicated in the output suggests that the router's resources, specifically the CPU, are being heavily utilized and approaching their maximum capacity. Resource exhaustion refers to the depletion of available system resources, such as CPU, memory, or network bandwidth, due to excessive demand or inefficient resource allocation. In this case, the sustained high CPU usage over different time intervals indicates that the router's CPU is constantly busy and nearing its limits.

D. Resource exhaustion CPU goes from 0% busy to 99-97-83% in the span of 1 minute

Resource exhaustion or DoS but not DDoS.

I believe it’s D. If you pay attention it says CPU 0% 300 secs ago… Again! 300 SECS AGOOO… But in the average seconds after that it stating that is busy at 99, 97 and 83. Which brings me to the conclusion that is resource exhaustion. That is an example of Denial of Service attack (DoS).

The correct answer is B: Memory Leak The router is not busy so there is no consumption of the memory however it can't release the memory blocks. This is a memory leak issue.

Resource exhaustion attacks are computer security exploits that crash, hang, or otherwise interfere with the targeted program or system. They are a form of denial-of-service attack but are different from distributed denial-of-service attacks, which involve overwhelming a network host such as a web server with requests from many locations.