Ports

Question 1

Port 80

Answer 1

HTTP

Question 2

Port 443

Answer 2

HTTPS

Question 3

Port 137-139

Answer 3

NetBIOS
Enables application on different computers to communicate with each other across LAN

Question 4

Port 110

Answer 4

POP3
TCP only
Secure port 995
Post office protocol
downloads email from server and deletes it
cannot access from different computers when email has been downloaded to personal computer

Question 5

Port 143

Answer 5

IMAP
Secure port is 993
Internet messaging access protocol
Allows you to access your email wherever, from any device.
Does not download email from server and erase it from server like POP3

Question 6

Port 25

Answer 6

SMTP
TCP only
Secure port is 465
Send email

Question 7

Port 3389

Answer 7

RDP

Question 8

Port 20/21

Answer 8

FTP
TCP 20 for data port
TCP 21 for command port

Question 9

Port 161/162

Answer 9

SNMP
UDP only
Simple network management protocol

Question 10

Port 22

Answer 10

SSH

Question 11

Port 23

Answer 11

TELNET
TCP only

Question 12

Port 53

Answer 12

DNS

Question 13

Port 67, 68

Answer 13

DHCP
BOTH used UDP only

Question 14

Port 69

Answer 14

TFTP
Trivial file transfer protocol
Transfers short configurations files to routers and other devices

Question 15

Port 445

Answer 15

SMB
Server message block
How Windows file and folder sharing is handled over tcp/ip

Question 16

PORT 389

Answer 16

LDAP
Lightweight Directory Access Protocol

Question 17

PORT 427

Answer 17

SLP
Service location protocol
MAC ONLY - used to list devices on macOS
Method of organizing and locating resources such as printers databases, email directories.