Ports

Question 1

What protocol uses port 25?

Answer 1

SMTP - Simple Mail Transfer Protocol - Is a mail delivery protocol, not a mail retrieval protocol - Uses TCP as the transport protocol

Question 2

What protocol uses Port 80?

Answer 2

HTTP

Question 3

What protocol uses port 443?

Answer 3

HTTPS

Question 4

What protocol uses port 110?

Answer 4

POP3

Question 5

What protocol uses port 143?

Answer 5

IMAP - Internet Message Access Protocol

Question 6

What protocol uses port 20/21?

Answer 6

FTP - File transfer protocol

Question 7

What protocol uses port 23?

Answer 7

Telnet

Question 8

What protocol use port 53?

Answer 8

DNS - Domain Name System

Question 9

What protocol uses port 88?

Answer 9

Kerberos

Question 10

What protocol uses ports 67/68?

Answer 10

DHCP

Question 11

What protocol uses port 587?

Answer 11

Used by the Starttls extension for encrypted communication in email protocols

Question 12

What protocol uses port 123?

Answer 12

NTP - Network Time Protocol for time synchronization

Question 13

What protocol uses port 389/636?

Answer 13

LDAP - Lightweight Directory Access Protocol for directory services

Question 14

What protocol uses ports 5060/5061?

Answer 14

SIP - Session initiation protocol for VOIP communication

Question 15

What protocol uses port 5900?

Answer 15

VNC

Question 16

What protocol uses ports 137-139?

Answer 16

NetBIOS protocol for network communication between windows devices