Exam N10-008 topic 1 question 738 discussion

To troubleshoot the issue of inconsistent NIC speeds after upgrading the network and PCs to gigabit speeds, the first thing to check should be: A. Speed mismatches. Speed mismatches occur when the speed settings of network devices, such as NICs (Network Interface Cards), do not match the configured speed of the network. This can lead to inconsistent or degraded network performance. By ensuring that the speed settings on the endpoint NICs match the configured speed of the network (in this case, gigabit speeds), technicians can address potential speed mismatches and improve overall network performance. Therefore, checking for speed mismatches should be the first step in troubleshooting the issue.

When troubleshooting inconsistent speeds of the endpoint Network Interface Cards (NICs) after an upgrade to gigabit speeds, the first thing to check should be "C. Devices’ duplex settings." Duplex settings, whether half-duplex or full-duplex, determine how data transmission occurs between devices. Mismatches in duplex settings can lead to performance issues, such as collisions in half-duplex mode or underutilization of the network’s capacity. Ensuring that both the NICs and switches are configured for full-duplex mode is critical for achieving the expected gigabit speeds, as it allows for simultaneous two-way communication, which is essential for maximizing the throughput of a gigabit network.

C. Devices' duplex settings. When upgrading a network to gigabit speeds, it's essential to ensure that all devices, including endpoint NICs (Network Interface Cards), are configured to operate at the same speed and duplex mode. If the duplex settings are inconsistent, it can cause performance issues, such as slow speeds, packet loss, and network congestion. Duplex settings refer to whether a NIC operates in half-duplex or full-duplex mode. Half-duplex mode allows a device to either transmit or receive data at a time, while full-duplex mode allows simultaneous transmission and reception of data. If some devices are set to half-duplex and others are set to full-duplex, it can cause communication issues and slow down the network.

A. Speed mismatches shouldn't occur as newer devices auto-negotiate speed B. Load balancer should automatically recognize faster devices, settings shouldn't affect end users C. 1Gbps+ REQUIRES duplex communications. This would be configured automatically in the upgraded network devices. D. Wiring category is the only answer that makes sense to me, it says that the company upgraded its "network and pcs", perhaps they forgot to upgrade the cables???

I hate this question. There's simply not enough data. They said the "upgrade the network and PC" this statement has no meaning. if they updated them to new hardware (Nic) then I'd assume that there set to auto negotiate and both items already be set to full duplex and speed of at least 1Gb/s. Now if the cabling is under 25 years old its prob CAT5E or better so it can handle 1Gb/s (assuming its wired never says one way or another.) It could be that the that now that we all moving at 10x the speed the system can't handle it and needs a load balancer but they didn't say the magic phrase busy when a lot of people are on (or hint at it.) Also says "speeds at endpoint NICs are inconsistent". Now this could mean that some nics are fast and some are slow but I'm gonna guess its a single nic that sometimes fast and sometimes slow meaning the speed is inconsistent. So I'm saying ANSWER IS C DEVICES' DUPLEX SETTING. But it takes several assumptions and guesses on what the question is saying.