Acronym -> Protocol

Question 1

FTP

Answer 1

File Transfer Protocol
tcp/20, tcp/21

Question 2

SSH

Answer 2

Secure Shell
tcp/22

Question 3

Telenet

Answer 3

Telecommunication Network
tcp/23

Question 4

SMTP

Answer 4

Simple Mail Transfer Protocol
tcp/25

Question 5

DNS

Answer 5

Domain Name Server
udp/53, tcp/53

Question 6

DHCP

Answer 6

Dynamic Host Configuration Protocol
udp/67, upd/68

Question 7

HTTP

Answer 7

Hypertext Transfer Protocol
tcp/80

Question 8

HTTPS

Answer 8

Hypertext Transfer Protocol Secure
tcp/443

Question 9

POP3

Answer 9

Post Office Protocol version 3
tcp/110

Question 10

IMAP4

Answer 10

Internet Message Access Protocol v4
tcp/143

Question 11

NetBIOS

Answer 11

NetBIOS Name Service
udp/137
NetBIOS Session Service
tcp/139

Question 12

SMB

Answer 12

Server Message Block
tcp/445

Question 13

SNMP Query

Answer 13

Simple Network Management Protocol
udp/161

Question 14

SNMP Trap

Answer 14

Simple Network Management Protocol
udp/162

Question 15

LDAP

Answer 15

Lightweight Directory Access Protocol
tcp/389

Question 16

RDP

Answer 16

Remote Desktop Protocol
tcp/3389