Chapter 5, Ports and Protocols

Question 1

What is the well-known port range?

Answer 1

0 to 1,023

Question 2

Describe the well-known port range

Answer 2

Permanently assigned

Question 3

What is the registered port range?

Answer 3

1,024 to 49,151

Question 4

Describe the registered port range

Answer 4

Assigned to services on request of developers

Question 5

What is the dynamic, private, or ephemeral port range?

Answer 5

49,152 to 65,535

Question 6

Describe the dynamic, private, or ephemeral port range

Answer 6

Unregistered ports

Question 7

Ports 20/21

Answer 7

File Transfer Protocol (FTP)

Question 8

Describe File Transfer Protocol (FTP)

Answer 8

Transfers files between clients and servers using two ports, one for control traffic and one for data

Question 9

Port 22 (1 of 2)

Answer 9

Secure Shell (SSH)

Question 10

Port 22 (2 of 2)

Answer 10

Secure File Transfer Protocol (SFTP)

Question 11

Describe Secure Shell (SSH)

Answer 11

Provides a secured command-line interface to remote systems

Question 12

Describe Secure File Transfer Protocol (SFTP)

Answer 12

Securely transfers files between clients and servers

Question 13

Port 23

Answer 13

Telnet

Question 14

Describe Telnet

Answer 14

Provides an unsecured command-line interface to remote systems

Question 15

Port 25

Answer 15

Simple Mail Transfer Protocol (SMTP)

Question 16

Describe Simple Mail Transfer Protocol (SMTP)

Answer 16

Transmits mail traffic between servers and between server and client

Question 17

Port 53

Answer 17

Domain Name System (DNS)

Question 18

Describe Domain Name System (DNS)

Answer 18

Resolves host and domain names into IP addresses

Question 19

Ports 67/68

Answer 19

Dynamic Host Configuration Protocol (DHCP)

Question 20

Describe Dynamic Host Configuration Protocol (DHCP)

Answer 20

Assigns IP addresses to TCP/IP clients

Question 21

Port 69

Answer 21

Trivial File Transfer Protocol (TFTP)

Question 22

Describe Trivial File Transfer Protocol (TFTP)

Answer 22

Transfers files between clients and servers without authentication

Question 23

Port 80

Answer 23

Hypertext Transfer Protocol (HTTP)

Question 24

Describe Hypertext Transfer Protocol (HTTP)

Answer 24

Carries web page content from servers to browsers

Question 25

Port 110

Answer 25

Post Office Protocol v3 (POP3)

Question 26

Describe Post Office Protocol v3 (POP3)

Answer 26

Retrieves user mail from a mail server

Question 27

Port 123

Answer 27

Network Time Protocol (NTP)

Question 28

Describe Network Time Protocol (NTP)

Answer 28

Carries time signals to remote computers for clock synchronization

Question 29

Port 143

Answer 29

Internet Message Access Protocol (IMAP)

Question 30

Describe Internet Message Access Protocol (IMAP)

Answer 30

Provides online access to user mail

Question 31

Ports 161/162

Answer 31

Simple Network Management Protocol (SNMP)

Question 32

Describe Simple Network Management Protocol (SNMP)

Answer 32

Transmits network management information from agents to a central console

Question 33

Port 389

Answer 33

Lightweight Directory Access Protocol (LDAP)

Question 34

Describe Lightweight Directory Access Protocol (LDAP)

Answer 34

Carries directory service information between domain controllers

Question 35

Port 443 (1 of 2)

Answer 35

Hypertext Transfer Protocol Secure (HTTPS)/Secure Sockets Layer (SSL)

Question 36

Describe Hypertext Transfer Protocol Secure (HTTPS)/Secure Sockets Layer (SSL)

Answer 36

Carries web page content using a connection secured with SSL

Question 37

Port 443 (2 of 2)

Answer 37

HTTPS/Transport Layer Security (TLS)

Question 38

Describe HTTPS/Transport Layer Security (TLS)

Answer 38

Carries web page content using a connection secured with TLS

Question 39

Port 445

Answer 39

Server Message Block (SMB)

Question 40

Describe Server Message Block (SMB)

Answer 40

Provides file and printer sharing services on Windows networks

Question 41

Port 514

Answer 41

Syslog

Question 42

Describe Syslog

Answer 42

Manages and transmits logging information

Question 43

Port 554

Answer 43

Real-Time Streaming Protocol (RTSP)

Question 44

Describe Real-Time Streaming Protocol (RTSP)

Answer 44

Carries multiplexed multimedia content between clients and servers

Question 45

Port 587

Answer 45

SMTP TLS

Question 46

Describe SMTP TLS

Answer 46

Transmits mail traffic server-to-server and server-to-client using TLS for secured authentication and data integrity

Question 47

Port 636

Answer 47

Lightweight Directory Access Protocol (over SSL) (LDAPS)

Question 48

Describe Lightweight Directory Access Protocol (over SSL) (LDAPS)

Answer 48

Securely carries directory service information between domain controllers

Question 49

Port 993

Answer 49

IMAP over SSL

Question 50

Describe IMAP over SSL

Answer 50

Provides secured online access to user mail

Question 51

Port 995

Answer 51

POP3 over SSL

Question 52

Describe POP3 over SSL

Answer 52

Securely retrieves user mail from a mail server

Question 53

Port 1433

Answer 53

Structured Query Language (SQL) Server

Question 54

Describe Structured Query Language (SQL) Server

Answer 54

Provides client/server communication for the SQL Server relational database management system

Question 55

Port 1521

Answer 55

SQLnet

Question 56

Describe SQLnet

Answer 56

Provides client/server communication for the SQLnet relational database management system

Question 57

Port 3306

Answer 57

MySQL

Question 58

Describe MySQL

Answer 58

Provides client/server communication for the open source MySQL relational database management system

Question 59

Port 3389

Answer 59

Remote Desktop Protocol (RDP)

Question 60

Describe Remote Desktop Protocol (RDP)

Answer 60

Carries keystrokes, mouse movements, and display video between host and remote systems

Question 61

Port 5060/5061

Answer 61

Session Initiation Protocol (SIP)

Question 62

Describe Session Initiation Protocol (SIP)

Answer 62

Creates and maintains audio/video connections for Voice over IP (VoIP), videoconferencing, and other multimedia applications