Protocols, Protocol types, and their Port numbers

Question 1

Port 53

UDP/TCP

Answer 1

Domain Name Service (DNS)

Question 2

Port 25

TCP

Answer 2

Simple Mail Transfer Protocol (SMTP)

Question 3

Port 110

TCP

Answer 3

Post Office Protocol version 3 (POPv3)

Question 4

Port 143

TCP

Answer 4

Internet Message Access Protocol (IMAP)

Question 5

Port 23

TCP

Answer 5

Telnet

Question 6

Port 22

TCP

Answer 6

Secure Shell (SSH)

Question 7

Port 21 for data
Port 20 for commands
TCP

Answer 7

File Transfer Protocol (FTP)

Question 8

Port 22

TCP

Answer 8

Shell File Transfer protocol (SFTP)

Question 9

Port 69

UDP

Answer 9

Trivial File Transfer Protocol (TFTP)

Question 10

Port 67 is the destination
Port 68 is used by client
UDP

Answer 10

Dynamic Host Configuration Protocol (DHCP)

Question 11

Port 80

UDP / TCP

Answer 11

Hypertext Transfer Protocol (HTTP)

Question 12

Port 443

UDP / TCP

Answer 12

Hypertext Transfer Protocol Secure (HTTPS)

Question 13

Port 161

UDP

Answer 13

Simole Network Management Protocol (SNMP)

Question 14

Port 3389

UDP / TCP

Answer 14

Remote Desktop Protocol (RDP)

Question 15

Port 389

UDP/TCP

Answer 15

Lightweight Directory Access Protocol (LDAS)

Question 16

Port 123

UDP

Answer 16

Network Time Protocol (NTP)

Question 17

Port 5060, 5061

UDP/TCP

Answer 17

Voice Over Internet Protocol (VOIP)

Question 18

Port 1720

TCP

Answer 18

H323

Question 19

Port 445

TCP

Answer 19

Server Message Block (SMB)