a. What is a FIN segment?

25a.) A TCP _______ segment is a request to the other transport process to close a connection.

a. FIN

b. ACK

c. CLS

d. SYN

b. Distinguish between four-way closes and abrupt resets.

25b1.) Four-way closes use _______ segments.

a. FIN

b. RST

c. Either A or B

d. Neither A nor B

25b2.) An abrupt close uses a(n) _______ segment.

a. FIN

b. RST

c. Either A or B

d. Neither A nor B

c. Why is a reset segment not acknowledged?

d. What other type of segment is not acknowledged?

25d.) Which of the following segments types is acknowledged?

a. FIN

b. RST

c. Both of the above are acknowledged.

d. Neither A nor B is acknowledged.