When designing a WAN that will be carrying real-time traffic, what are two important reasons to consider serialization delay? (Choose two.)

This choice incorrectly states that delay depends on the 'type' of packet rather than its size; serialization delay is determined by bit length and line rate, not packet type or protocol.

Serialization delay is calculated as packet size in bits divided by the line rate in bits per second, so it varies with both factors - a larger packet on a slow WAN link produces significantly more delay than a small packet on a high-speed link, which directly impacts voice and video quality.

Serialization delay is not invariable - it changes with packet size, so claiming it depends only on line rate is incorrect and would lead to underestimating delay for large packets on a given link.

Serialization delay depends on both packet size and line rate, not solely on packet size; omitting line rate as a determining factor makes this statement technically incomplete and misleading.

Serialization delay is precisely defined as the time required to transmit all bits of a packet onto the physical medium, and this fundamental delay component must be accounted for in any WAN QoS design carrying real-time traffic.