Internet Application Protocols

Question 1

HTTP

Answer 1

Application protocol
Function: web pages
Port: 80

Question 2

HTTPS

Answer 2

Application protocol
Function: secure web pages
Port: 443

Question 3

FTP

Answer 3

Application protocol
Function: file transfer
Port: 20, 21

Question 4

IMAP

Answer 4

Application protocol
Function: incoming e-mail
Port: 143

Question 5

POP3

Answer 5

Application protocol
Function: incoming e-mail
Port: 110

Question 6

SMTP

Answer 6

Application protocol
Function: outgoing email
Port: 25

Question 7

Telnet

Answer 7

Application protocol
Function: terminal emulation
Port: 23

Question 8

SSH

Answer 8

Application protocol
Function: encrypted terminal emulation
Port: 22

Question 9

RDP

Answer 9

Application protocol
Function: Remote Desktop
Port: 3389

Question 10

DNS

Answer 10

Utility protocol
Function: allow the use of DNS naming
Protocol: UDP
Port: 53

Question 11

DHCP

Answer 11

Utility protocol
Function: automatic IP addressing
Protocol: UDP
Port: 67, 68

Question 12

LDAP

Answer 12

Utility protocol
Function: querying directories
Protocol: TCP
Port: 389

Question 13

SNMP

Answer 13

Utility protocol
Function: remote management of network devices
Protocol: UDP
Port: 161, 162

Question 14

SMB/CIFS

Answer 14

Utility protocol
Function: windows folder/file sharing
Protocol: TCP
Port: 445
Protocol: UDP
Port: 137, 138, 139

Question 15

NetBIOS/NetBT

Answer 15

Utility protocol
Function: NetBIOS over TCP/IP
Protocol: TCP
Port: 137, 139
Protocol: UDP
Port: 137, 138