Question

what is the purpose of using jumbo frames?

a to support a data payload of exactly 1518 bytes
b to eliminate the need for error checking
c to increase the maximum transmission unit (mtu) for efficiency
d to decrease the size of the ethernet frame header

Explanation:

Define jumbo frames and standard MTU

Standard Ethernet frames have a Maximum Transmission Unit (MTU) of 1500 bytes (resulting in a total frame size of 1518 bytes with headers). Jumbo frames are Ethernet frames with a payload greater than 1500 bytes, typically up to 9000 bytes.

Analyze the purpose of jumbo frames

By carrying a larger payload per frame, jumbo frames increase the MTU. This reduces the total number of frames that need to be processed by network interfaces and switches, lowering CPU overhead and increasing overall data transmission efficiency.

Evaluate the given options

• Option A is incorrect because 1518 bytes is the standard Ethernet frame size, not a jumbo frame.
• Option B is incorrect because error checking (FCS) is still required for jumbo frames.
• Option C is correct because jumbo frames directly increase the MTU to improve network efficiency.
• Option D is incorrect because jumbo frames do not change the size of the standard Ethernet header.

Answer:

• (A) To support a data payload of exactly 1518 bytes
• (B) To eliminate the need for error checking
• (C) To increase the maximum transmission unit (MTU) for efficiency (Correct answer)
• (D) To decrease the size of the Ethernet frame header