CompTIA Cloud+ Practice Test

Which statement is true about jumbo frames?

1. They can improve network efficiency.

2. They are used to enhance security.

3. They are only compatible with wireless networks.

4. They reduce the number of Ethernet collisions.

The correct answer is: They can improve network efficiency.

Jumbo frames refer to Ethernet frames that are larger than the standard maximum transmission unit (MTU) of 1500 bytes, typically allowing for sizes up to 9000 bytes or more. The use of jumbo frames can indeed improve network efficiency, primarily by reducing the overhead associated with sending multiple smaller packets over the network. When larger packets are used, the protocol overhead – which includes headers and other control information – is minimized because fewer packets are needed to transmit the same amount of data. By combining more data into a single packet, there are fewer packets to process, leading to improved throughput and reduced CPU utilization on network devices. This is especially beneficial in environments where large amounts of data are transferred, such as data centers or high-bandwidth applications. Jumbo frames can also enhance the performance of storage area networks (SANs), video streaming, and data backup operations. In contrast, the other statements do not accurately reflect the nature of jumbo frames. While larger frames can contribute to network efficiency, they do not inherently enhance security, are not exclusively compatible with wireless networks, and do not directly reduce Ethernet collisions; in fact, if not configured properly, they can lead to fragmentation and potential performance issues.