Ports And Protocols

Question 1

FTP

Answer 1

20, 21
Insecure file transfer protocol

Question 2

SSH

Answer 2

22, secure remote control using command shell

Question 3

SFTP

Answer 3

22, Provides secure file transfers

Question 4

Telnet

Answer 4

23, Insecure text-oriented communication remote access

Question 5

SMTP

Answer 5

25, Provides the ability to send emails over the network

Question 6

DNS

Answer 6

53, Converts domain names to IP and vice-versa

Question 7

DHCP

Answer 7

67,68
Automatically provides network parameters (IP, gateway…)

Question 8

HTTP

Answer 8

80, Used for insecure web browsing

Question 9

POP3

Answer 9

110, Used for receiving incoming emails

Question 10

NetBIOS

Answer 10

137,139,
Used for file or printer sharing in a Windows Network

Question 11

IMAP

Answer 11

143,
Newer nethod of retrieving incoming emails which improves upon POP3

Question 12

SNMP

Answer 12

161,162
Used to collect data about network devices and monitor their status

Question 13

LDAP

Answer 13

389,
Used to provide directory services to your network.

Question 14

HTTPS

Answer 14

443,
Used as a secure and encrypted version of web browsing (using SSL or TLS)

Question 15

SMB

Answer 15

445,
Used for Windows file and printer sharing services.

Question 16

RDP

Answer 16

3389,
Provides graphical remote control of another client or server.