Net+

Question 1

Telnet

Answer 1

Port 23, (console access/remote login UNENCRYPTED)

Question 2

SSH

Answer 2

Port 22, (Looks and acts like Telnet but encrypted)

Question 3

DNS

Answer 3

UDP/53

Question 4

Plain-text SMTP (Simple-Mail Transfer Protocol)

Answer 4

TCP/25

Question 5

TLS SMTP

Answer 5

TCP/587

Question 6

POP3/IMAP (What does it do, no port needed)

Answer 6

Receive emails from an email server

Question 7

Pop3 Plaintext

Answer 7

TCP/110

Question 8

Pop3 over TLS

Answer 8

TCP/995

Question 9

Imap4 plaintext

Answer 9

TCP/143

Question 10

IMAP4 Over TLS

Answer 10

TCP/993 and -Includes management of email inbox from multiple clients

Question 11

SFTP

Answer 11

TCP/22 for encryption (Secure file transfer protocol)

Question 12

FTP

Answer 12

uses tcp/20 (active mode data), tcp/21 (control)

Question 13

TFTP

Answer 13

Trivial FTP (UDP 69)

Question 14

UDP

Answer 14

Port 69, simple file transfer app, reads and writes files, no authentication and not used on prod

Question 15

DHCP

Answer 15

UDP/67 UDP/68 - Requires a DHCP server (server, appliance, integrated into a SOHO router, etc)

Question 16

SNMP

Answer 16

Simple network management protocol (gather statistics from network devices) - UDP/161 uses UDP/162 for alerts and notifications

Question 17

Syslog

Answer 17

standard for message logging UDP/514
Centralized log collector NEED SPACE

Question 18

RDP

Answer 18

TCP/3389 - Can connect to an entire desktop or just an application

Question 19

NTP

Answer 19

Network Time Protocol - UDP/123

Question 20

SIP (Session Initiation Protocol

Answer 20

TCP/5060 and TCP/5061

Question 21

SMB

Answer 21

Server Message Block
-Used by Microsoft, File sharing/printer sharing (also called CIFS(Common Internet File System)
-Direct over TCP/445 (NetBIOS-less) - Direct SMB communication over TCP without the NetBios transport

Question 22

LDAP

Answer 22

TCP/389 (lightweight directory access protocol, AD)

Question 23

LDAPS

Answer 23

TCP/639 (secured over SSL)

Question 24

MS-SQL

Answer 24

TCP/1433

Question 25

Oracle SQL

Answer 25

TCP/1521 (Oracle Net)

Question 26

MySQL

Answer 26

TCP/3306 (Open source and free)