Ports

Question 1

Which protocol uses port 1?

Answer 1

TCP Port Service Multiplexer

Question 2

Which protocol uses port 2?

Answer 2

Compressnet (Management Utility)

Question 3

Which protocol uses port 3?

Answer 3

Compressnet (Compression Process)

Question 4

Which protocol uses port 5?

Answer 4

Remote Job Entry

Question 5

Which protocol uses port 7?

Answer 5

Echo

Question 6

Which protocol uses port 9?

Answer 6

Discard protocol
Wake-on-LAN

Question 7

Which protocol uses port 11?

Answer 7

Active Users (systat service)

Question 8

Which protocol uses port 13?

Answer 8

Daytime

Question 9

Which protocol uses port 15?

Answer 9

NetBIOS Name Service

Question 10

Which protocol uses port 17?

Answer 10

Quote of the Day (QOTD)

Question 11

Which protocol uses port 18?

Answer 11

Message Send

Question 12

Which protocol uses port 19?

Answer 12

Character Generator

Question 13

Which protocol uses port 20?

Answer 13

File Transfer Protocol (FTP): Data transfer

Question 14

Which protocol uses port 21?

Answer 14

File Transfer Protocol (FTP): Control

Question 15

Which protocol uses port 22?

Answer 15

Secure Shell (SSH)
Secure Copy (SCP)
Secure FTP (SFTP)

Question 16

Which protocol uses port 23?

Answer 16

Telnet

Question 17

Which protocol uses port 25?

Answer 17

Simple Mail Transfer Protocol (SMTP)

Question 18

Which protocol uses port 27?

Answer 18

NSW User System FE

Question 19

Which protocol uses port 28?

Answer 19

Palo Alto Networks’ Panorama High Availability (HA) sync encrypted port.

Question 20

Which protocol uses port 29?

Answer 20

MSG ICP

IRC Relay Chat

Question 21

Which protocol uses port 31?

Answer 21

MSG Auth

Question 22

Which protocol uses port 33?

Answer 22

Display Support Protocol

Question 23

Which protocol uses port 37?

Answer 23

Time Protocol

Question 24

Which protocol uses port 38?

Answer 24

Route Access Protocol

Question 25

Which protocol uses port 39?

Answer 25

Resource Location Protocol

Question 26

Which protocol uses port 41?

Answer 26

Graphics

Question 27

Which protocol uses port 42?

Answer 27

Host Name Server Protocol

Question 28

Which protocol uses port 43?

Answer 28

WHOIS

Question 29

Which protocol uses port 44?

Answer 29

MPM Flags

Question 30

Which protocol uses port 45?

Answer 30

MPM (receive)

Question 31

Which protocol uses port 46?

Answer 31

MPM (send)

Question 32

Which protocol uses port 47?

Answer 32

None (reserved)

Question 33

Which protocol uses port 48?

Answer 33

Digital Audit Daemon

Question 34

Which protocol uses port 49?

Answer 34

TACACS Login Host Protocol

Question 35

Which protocol uses port 50?

Answer 35

Remote Mail Checking Protocol

Question 36

Which protocol uses port 51?

Answer 36

None (reserved)

Question 37

Which protocol uses port 52?

Answer 37

Xerox Network Systems (XNS) Time Protocol

Question 38

Which protocol uses port 53?

Answer 38

Domain Name System (DNS)

Question 39

Which protocol uses port 54?

Question 40

Which protocol uses port 55?

Question 41

Which protocol uses port 56?

Question 42

Which protocol uses port 58?

Question 43

Which protocol uses port 61?

Question 44

Which protocol uses port 62?

Question 45

Which protocol uses port 63?

Question 46

Which protocol uses port 64?

Question 47

Which protocol uses port 65?

Question 48

Which protocol uses port 66?

Question 49

Which protocol uses port 67?

Question 50

Which protocol uses port 68?

Question 51

Which protocol uses port 69?

Question 52

Which protocol uses port 70?

Question 53

Which protocol uses port 71?

Question 54

Which protocol uses port 72?

Question 55

Which protocol uses port 73?

Question 56

Which protocol uses port 74?

Question 57

Which protocol uses port 76?

Question 58

Which protocol uses port 78?

Question 59

Which protocol uses port 79?

Question 60

Which protocol uses port 80?

Answer 60

Hypertext Transfer Protocol