Introduction

Question 1

A new mechanism that enables data exchange during TCP’s initial handshake

Answer 1

TCP Fast Open

Question 2

Decreases application network latency by one full round-trip time, decreasing the delay experienced by such short TCP transfers

Answer 2

TCP Fast Open

Question 3

Can decrease HTTP transaction network latency by 15% and whole-page load time over 10% on average, and in some cases up to 40%

Answer 3

TCP Fast Open

Question 4

The time required for a signal pulse or packet to travel from a specific source to a specific destination and back again. In this context, the source is the computer initiating the signal and the destination is a remote computer or system that receives the signal and retransmits it.

Answer 4

RTT = Round-trip time

Question 5

The RTT of a web flow largely

comprises two components:

Answer 5

transmission delay and propagation

delay

Question 6

Though network bandwidth has grown substantially
over the past two decades thereby significantly reducing
transmission delays, this particular delay is largely constrained
by the speed of light and therefore has remained unchanged.

Answer 6

propagation delay

Question 7

the most effective way to

improve the latency of web applications

Answer 7

reducing the number of round trips required

for the transfer of a web object

Question 8

this additional RTT is a significant portion of the flows’

network latency

Answer 8

short transfers such as those common today on the

web

Question 9

the performance penalty incurred by a web

flow due to its TCP handshake is

Answer 9

between 10% and 30% of

the latency to serve the HTTP request

Question 10

The core of TFO

Answer 10

At the core of TFO
is a security cookie that is used by the server to authenticate
a client that is initiating a TFO connection.

Question 11

What enabled TFO

Answer 11

socket

API extensions