I would appreciate help with these questions Thank you Quest

I would appreciate help with these questions. Thank you.

Question 1 How many transmissions are needed for a basic TCP connection to be established?

1. 1

2. 2

3. 3

4. 4

Question 2 Which of the following are the flags typically used to create a connection in TCP?

1. SYN and ACK

2. PSH and ACK

3. SYN and FIN

4. FIN and ACK

Question 3 Which of the following are the flags typically used to close a connection in TCP?

1. RST and PSH

2. SYN and FIN

3. FIN and ACK

4. SYN and ACK

Question 4 How many transmissions are needed for a basic TCP connection to be completely closed?

1. 1

2. 2

3. 3

4. 4

Question 5 What is the best reason why TCP uses delayed acknowledgement?

1. To provide exact acknowledgement for every packet sent to guarantee delivery.

2. To make the transmission of the data faster.

3. To allow TCP to determine that a specific packet has been lost.

4. To reduce the number of extra packets sent to acknowledge that data has been received.

Question 6 How many bytes is a TCP header?

1. 5

2. 20

3. 40

4. 65535

Solution

1) 3 transmission are required to establish a basic TCP connection. Sender sends a SYN message then receiver sends a SYN+ACK message and then sender sends ACK message.

2) SYN and ACK are the flags basically used to create connection in TCP as explained in first option.

3) SYN and FIN are used to close a connection, SYN identifies synchronised and FIN identifies finished which tells the receiver or flags the receiver that its wants to close the connection.

4) 2 transmission are required to close a connection, one is SYN and FIN and another one is ACK from receiver side to say that i acknowledge for connection closed.

5) Option 4 : To reduce the number of extra packets sent to acknowledge that data has been received.