TCP & UDP Ports

Question 1

Which port enables the FTP’s Data Connection for sending file data?

Answer 1

TCP Port 20

Question 2

The FTP’s Control Connection for administering a session is established through which port?

Answer 2

TCP Port 21

Question 3

SSH protocol runs on which port?

Answer 3

TCP Port 22

Question 4

Which of the TCP ports listed below is used by Telnet?

Answer 4

TCP Port 23

Question 5

TCP port 25 is used by?

Answer 5

SMTP
(Simple Mail Transfer Protocol)

Question 6

Which of the following ports is assigned to the Domain Name System (DNS)?

Answer 6

53

Question 7

Dynamic Host Configuration Protocol (DHCP) runs on which 2 ports?

Answer 7

UDP Port 67
UDP Port 68

Question 8

TCP port 80 is assigned to which protocol?

Answer 8

HTTP
(Hypertext Transfer Protocol)

Question 9

Post Office Protocol v3 (POP3) uses which port?

Answer 9

TCP Port 110

Question 10

Which port numbers are reserved for NetBIOS services?

Answer 10

137
138
139

Question 11

Which of the following TCP ports is used by the Internet Message Access Protocol (IMAP)?

Answer 11

143

Question 12

An SNMP management station receives SNMP notifications from Agents on UDP port:

Answer 12

162

Question 13

An SNMP Agent receives requests on UDP port

Answer 13

161

Question 14

TCP port 389 is the default network port for which protocol?

Answer 14

LDAP
(The Lightweight Directory Access Protocol)

Question 15

Which of the following ports is used by HTTPS?

Answer 15

TCP Port 443

Question 16

Which of the following protocols runs on TCP port 445?

Answer 16

SMB/CIFS
(Server Message Block)
(Common Internet File System)

Question 17

TCP Port 3389 is the default port for which protocol?

Answer 17

RDP
(Remote Desktop Protocol)