Adam, a malicious hacker is running a scan.

Adam, a malicious hacker is running a scan. Statistics of the scan is as follows:

Scan directed at open port: ClientServer

192.5.2.92:4079 ---------FIN--------->192.5.2.110:23192.5.2.92:4079 <----NO RESPONSE---

---192.5.2.110:23

Scan directed at closed port:

ClientServer

192.5.2.92:4079 ---------FIN--------->192.5.2.110:23

192.5.2.92:4079<-----RST/ACK----------192.5.2.110:23

Which of the following types of port scan is Adam running?