Internet protoco$1,$ src: $12\mathrm{.}247\mathrm{.}131\mathrm{.}206(\frac{6}{2\mathrm{.}247}\mathrm{.}151\mathrm{.}206),$ bst: $192\mathrm{.}168\mathrm{.}1\mathrm{.}64(192\mathrm{.}168\mathrm{.}1\mathrm{.}64)$

Transmission control protocol, $5$rc port: https $(443),$ Dst Port: $53167(53167),$ Seq: $1,$ Ack: $2,$ Len: $0$

Source port: https $(443)$

Destination port: $53167(53167)$

$[$stream index: $51]$

sequence number: $1($relative sequence number$)$

Acknowledgement number: $2($relative ack number$)$

Header length: $32$ bytes

Plags: $010($ACK$)$

window size: $9017$

$(8)$ Checksum: $0$xfde$1[$validation disabled$]$

$($i$)$ options: $(12$ bytes$)$

i$.[$SEQ$/$ACK analysis$]$

Refer to the exhibit. What does the value of the window size specify?

the total number of bits received during this TCP session

the amount of data that can be sent before an acknowledgment is required

the amount of data that can be sent at one time

a random number that is used in establishing a connection with the $3-$way handshake