Exam N10-008 topic 1 question 282 discussion

Ethernet flow control is a mechanism for temporarily stopping the transmission of data on Ethernet family computer networks. The goal of this mechanism is to avoid packet loss in the presence of network congestion.

This feature helps manage the rate of data transmission between two devices to prevent the sender from overwhelming the receiver with too much data too quickly.

Configuring jumbo frames to be smaller can prevent larger bursts of data to be condensed down into smaller packets in larger quantities to keep data flow consistent.

correct answer is A

flow control is the better answer, Jumbo could also work but then it has to be correctly configured in the whole network, and it is more a CPU saver.

A. Flow control.

One of the possible ways to decrease latency during periods of high utilization of a firewall is to use flow control. Flow control is a mechanism that allows a device to control the rate of incoming traffic, preventing the device from being overwhelmed by large bursts of data and resulting in packet loss. This can help to ensure that packets are delivered to the device in a timely and efficient manner. Flow control can be implemented using various methods, such as Ethernet PAUSE frames, TCP window scaling, or application-level protocols.

A. Flow control would be the MOST likely configuration that a technician would use to resolve the issue of packet loss to a device that has varying data bursts throughout the day. Flow control allows the device to control the rate of incoming traffic, preventing the device from being overwhelmed by large bursts of data and resulting in packet loss. This can help to ensure that packets are delivered to the device in a timely and efficient manner.

Definitely A

It is difficult to accurately determine the best solution to this issue without more information about the specific device and its network environment. However, one option the technician could consider is configuring flow control. Flow control is a mechanism that allows a device to regulate the amount of data it receives from another device, ensuring that the receiving device is not overwhelmed with data. If the device experiencing packet loss is receiving large bursts of data at times when it is not able to process it quickly enough, configuring flow control could help prevent packets from being lost.

Mike Meyers "In theory, flow control can help with situations like a host that can’t keep up with the flow of traffic. It enables the host to send an Ethernet PAUSE frame, which asks the switch to hold up for some amount of time so the host can catch its breath. If the switch can, it’ll buffer transmissions until the pause expires, and then start sending again. If the host catches up early, it can send another PAUSE frame with a delay of zero to ask the switch to resume. In practice, flow control can cause latency trouble for modern real-time applications such as VoIP, and the same needs are usually met by QoS"

This answer is incorrect if it were jumbo it would cause a loss of service and also cause a denial of service attack.

Flow control is definitely the best way to deal with data bursts leading to packet loss.

Flow control straight from Comptia Certmaster: "EEE 802.3x flow control allows a server to instruct the switch to pause traffic temporarily to avoid overwhelming its buffer and causing it to drop frames."

Jumbo frames can be configured with up to 9000 bytes for data bursts though to prevent packet loss.