Suggested Answer:B🗳️
We know by definition that Jumbo Frames support 9000 byte MTU ג€" therefore Answer A is incorrect (the stated unit is kilobytes). Jumbo Frames is a data transmission unit configuration option - it does not change or alter anything related to security ג€" therefore Answer B is incorrect. Answer C is correct - we can get improved application performance when used within appropriate scenarios. Jumbo Frames are not supported over VPG IPsec VPN connections - therefore Answer D is incorrect. Answer E is nonsensical ג€" Jumbo Frames is a networking construct and has nothing to do with disk storage. Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/network_mtu.html
A.
The obvious advantage of using jumbo frames is more data is transferred in less packets. This means less protocol overhead, e.g., if one ACK were sent every 8 packets, that ACK is now acknowledging 72,000 bytes of data vs 12,000 bytes of data. This results in less network chatter.
Let’s assume we need to transfer 20 gigabytes (21,474,836,480 bytes) of data as quickly as possible. With a standard 1500 byte MTU that will take 14,316,558 packets, but with an MTU of 9000 we are sending 2,386,093 packets. That’s a difference of 11,930,465 packets.
That’s our advantage. Speed when sending large amounts of data.
B. Application code???? Nope
C. No, refer to https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/network_mtu.html
VPN connections and traffic sent over an internet gateway are limited to 1500 MTU. If packets are over 1500 bytes, they are fragmented, or they are dropped if the Don't Fragment flag is set in the IP header.
D. bytes, not Kbytes
C is true
https://docs.aws.amazon.com/directconnect/latest/UserGuide/set-jumbo-frames-vif.html
Jumbo frames are supported on a private virtual interface attached to either a virtual private gateway or a Direct Connect gateway, or on a transit virtual interface attached to a Direct Connect gateway.
D: false, 9000kB is a super jumbo frames (standard jumbo frame goes up to 9000 bytes, not 9000 kilobytes). Not supported by AWS, and a terrible idea anyway
C: Nope, I don't think jumbo are allowed on VPN
B: jumbo won't speed up your code
So that leave A as an answer
Jumbo frames can indeed speed up disk storage transfert
Is this a good idea to do such setup on AWS .. and do you really need jumbo frames .. this is another topic
Closest answer is B but solutions are all messed up
upvoted 3 times
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