Exam N10-008 topic 1 question 119 discussion

In a Storage Area Network (SAN), large amounts of data are frequently transferred, which can result in overhead and decreased efficiency. Jumbo frames can be used to reduce overhead and increase efficiency by increasing the maximum transmission unit (MTU) size for a network. By increasing the MTU size, jumbo frames can reduce the overhead associated with transmitting large amounts of data, resulting in improved performance for large data transfers, such as those that occur in a SAN. Port aggregation (A) combines multiple physical links into a single logical link to increase the bandwidth of a network. Traffic shaping (B) is used to control the flow of data and prioritize certain types of network traffic. Flow control (D) is used to regulate the amount of data that can be transmitted on a network to prevent network congestion. While these technologies can also play a role in improving network efficiency, they are not directly related to reducing overhead in a SAN specifically.

Jumbo frames—A host might be configured to use jumbo frames, but the switch interface is not configured to receive them. This type of issue often occurs when configuring storage area networks (SANs) or links between SANs and data networks

GPT selects: "(C) Jumbo frames". It explains: "Configuring jumbo frames can help reduce overhead and increase efficiency on a Storage Area Network (SAN). Jumbo frames are larger Ethernet frames that can carry more data compared to standard frames. By allowing more data to be sent in a single frame, jumbo frames reduce the overhead associated with smaller frames, leading to improved efficiency and potentially better performance on the network. Options like port aggregation (A), traffic shaping (B), and flow control (D) are also important concepts in networking, but they are not directly related to reducing overhead and increasing efficiency on a SAN"

I am going to be the contrarian here and say A, Port aggregation. My reasoning is that Jumbo Frames are Ethernet technology, and SANs don't use Ethernet, normally. Yes, I know that it could be a FCoE or ISCSI that would support Ethernet, but it's not specified in the question. You can do Port Aggregation with a FC Switch, so I voted that because it can help increase efficiency.

D. Flow control, flow control is the best option to reduce overhead and increase efficiency on a SAN by regulating the flow of data and ensuring that the receiving device can handle incoming data without data loss.

C When should jumbo frames be used? Use jumbo frames only when you have a dedicated network or VLAN, and you can configure an MTU of 9000 on all equipment, to increase performance. A good example of this approach is a separate SAN or storage network

C. Jumbo frames Jumbo frames are packets with a size larger than the standard maximum transmission unit (MTU) of 1500 bytes. By allowing more data to be sent in a single packet, jumbo frames reduce the overhead of multiple packets and increase the efficiency of data transfer in a Storage Area Network (SAN).

"on a SAN" which I assume they mean within the SAN Server arrays, really only option is C, A-B and D would be on switching into the SAN maybe I missing the sprit of question though.