Q12

MSQ1 mark

Consider the $3$ -way handshaking protocol for TCP connection establishment. Let the three packets exchanged during the connection establishment be denoted as $\text{P1, P2}$ , and $\text{P3}$ , in order. Which of the following option(s) is/are TRUE with respect to TCP header flags that are set in the packets?

(A)

$\mathrm{P} 3: \mathrm{SYN}=1, \mathrm{ACK}=1$

(B)

$\mathrm{P} 2: \mathrm{SYN}=1, \mathrm{ACK}=1$

(C)

$\text{P2}$ : $\mathrm{SYN}=0, \mathrm{ACK}=1$

(D)

$\text{P1: SYN = 1}$

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