Exam N10-008 topic 1 question 199 discussion

C. High CPU usage is the most likely cause of the device dropping packets when the cable and interfaces are in working order. When the CPU becomes overloaded, the device may not be able to process network packets quickly enough, leading to dropped packets.

Given that the cable and interfaces are confirmed to be in working order, and assuming OID duplication and MIB mismatch are not relevant factors, the most likely cause of packet drops in this scenario would be high CPU usage. When a device's CPU is overwhelmed with processing tasks, it may struggle to handle incoming network traffic efficiently, leading to packet drops. Therefore, option C, CPU usage, is the most likely cause in this situation.

C and D are most likely correct but I think C fits better here because overloaded CPU could lead to encapsulation errors

Encapsulation is the frame format expected on the interface. Encapsulation errors will prevent transmission and reception. If you check the interface status, the physical link will be listed as up, but the line protocol will be listed as down.

C. CPU usage: High CPU usage on a network device like a router or switch could cause it to drop packets if it can't process them quickly enough. If the device's CPU is overwhelmed, incoming or outgoing packets may be dropped, leading to performance issues.

CHATGPT: D. Encapsulation errors Encapsulation errors occur when the data link layer framing is incorrect, causing the receiving device to drop the packet. This could be due to issues like mismatched frame formats, incorrect frame size, or corrupted frames. Even though the cable and physical interfaces might be in working order, if there are issues with the encapsulation of data, packets can be dropped during transmission. When a device's CPU is overwhelmed, it might not be able to process network data quickly enough to ensure proper encapsulation and transmission. This can lead to issues such as misaligned frames, incorrect checksum calculations, or improperly formed packets, all of which can result in encapsulation errors and dropped packets. So, while CPU usage itself might not directly cause encapsulation errors, it can contribute to the overall degradation of network performance, potentially leading to errors in packet encapsulation and transmission.

Gotta be encapsulation errors

Network congestion could be the most likely cause along with cable issues. But otherwise CPU or encapsulation errors could also be. Out of that CPU could be better

An NMS (network management system), which can be implemented as a workstation or server, is intended to poll multiple managed devices at regular intervals and collect data. Each managed device can include one or several managed objects, such as component temperature, a port interface, or physical resource utilization. Managed objects are assigned an OID, or object identifier. This isn't a likely source of dropped network packet issues. A MIB (Management Information Base) is simply a list of objects, performance info, and their descriptions (see above re: NMS) managed by an NMS. It's not likely to be relevant here either. Encapsulation errors are an likely cause in this situation. They can occur for a number of reasons, including failed arp command requests, and aren't commonly tied to chronic packet loss. Without going into a lot of detail, its safe to say that CPU usage can be indicative. Of the available options, its the best answer.

going with C, overworking CPU or max Ram, general the encapsulation failed error message indicates that the router has a layer 3 packet to forward and is lacking some element of the layer 2 header that it needs to be able to forward the packet toward the next hop.

I think C is correct: Overutilized devices - https://www.pcwdld.com/packet-loss

This seems like it could be Encapsulation Errors as well right?