Ports and Protocols

Question 1

What is FTP and its port numbers?

Answer 1

FTP (File Transfer Protocol) is used to transfer files between a client and server. It uses ports 20 and 21.

Question 2

What is SSH and its port number?

Answer 2

SSH (Secure Shell) is used for secure remote login and other secure network services. It uses port 22.

Question 3

What is SFTP and its port number?

Answer 3

SFTP (Secure File Transfer Protocol) is a secure version of FTP, using SSH for encryption. It uses port 22.

Question 4

What is Telnet and its port number?

Answer 4

Telnet is used for remote login sessions, allowing a user to control a device over a network. It uses port 23.

Question 5

What is SMTP and its port number?

Answer 5

SMTP (Simple Mail Transfer Protocol) is used to send emails. It uses port 25.

Question 6

What is DNS and its port number?

Answer 6

DNS (Domain Name System) translates domain names to IP addresses. It uses port 53.

Question 7

What is DHCP and its port numbers?

Answer 7

DHCP (Dynamic Host Configuration Protocol) assigns IP addresses to devices on a network. It uses ports 67 and 68.

Question 8

What is TFTP and its port number?

Answer 8

TFTP (Trivial File Transfer Protocol) is a simple, unsecured file transfer protocol. It uses port 69.

Question 9

What is HTTP and its port number?

Answer 9

HTTP (Hypertext Transfer Protocol) is used for transferring web pages on the internet. It uses port 80.

Question 10

What is POP3 and its port number?

Answer 10

POP3 (Post Office Protocol v3) is used to retrieve emails from a server. It uses port 110.

Question 11

What is NTP and its port number?

Answer 11

NTP (Network Time Protocol) is used to synchronize clocks on network devices. It uses port 123.

Question 12

What is IMAP and its port number?

Answer 12

IMAP (Internet Message Access Protocol) is used to retrieve and manage emails from a server. It uses port 143.

Question 13

What is SNMP and its port numbers?

Answer 13

SNMP (Simple Network Management Protocol) is used for network management and monitoring. It uses ports 161 and 162.

Question 14

What is LDAP and its port number?

Answer 14

LDAP (Lightweight Directory Access Protocol) is used to access and manage directory information. It uses port 389.

Question 15

What is HTTPS and its port number?

Answer 15

HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP, using SSL/TLS for encryption. It uses port 443.

Question 16

What is SMB and its port number?

Answer 16

SMB (Server Message Block) is used for providing shared access to files and printers. It uses port 445.

Question 17

What is Syslog and its port number?

Answer 17

Syslog is used for logging system messages. It uses port 514.

Question 18

What is SMTP TLS and its port number?

Answer 18

SMTP TLS is SMTP with Transport Layer Security, providing encrypted email transmission. It uses port 587

Question 19

What is LDAPS and its port number?

Answer 19

LDAPS (Lightweight Directory Access Protocol over SSL) is a secure version of LDAP. It uses port 636.

Question 20

What is IMAP over SSL and its port number?

Answer 20

IMAP over SSL is a secure version of IMAP. It uses port 993.

Question 21

What is POP3 over SSL and its port number?

Answer 21

POP3 over SSL is a secure version of POP3. It uses port 995.

Question 22

What is SQL Server and its port number?

Answer 22

SQL Server is a relational database management system. It uses port 1433.

Question 23

What is SQLnet and its port number?

Answer 23

SQLnet is used for Oracle databases to communicate over a network. It uses port 1521.

Question 24

What is MySQL and its port number?

Answer 24

MySQL is an open-source relational database management system. It uses port 3306

Question 25

What is RDP and its port number?

Answer 25

RDP (Remote Desktop Protocol) is used for remote desktop access. It uses port 3389.

Question 26

What is SIP and its port numbers?

Answer 26

SIP (Session Initiation Protocol) is used for initiating, maintaining, and terminating real-time sessions like VoIP. It uses ports 5060 and 5061

Question 27

ICMP

Answer 27

Used for network diagnostics, such as ping

Question 28

TCP

Answer 28

Connection-oriented protocol providing reliable data transfer.

Question 29

UDP

Answer 29

Connectionless protocol providing faster, but less reliable, data transfer.

Question 30

GRE

Answer 30

Encapsulation protocol used for creating point-to-point links.

Question 31

IPSec

Answer 31

Suite of protocols for securing IP communications.

Question 32

AH/ESP

Answer 32

Part of IPSec, providing authentication and encryption for secure communications

Question 33

What is the difference between connectionless and connection-oriented protocols?

Answer 33

-Connectionless protocols (e.g., UDP): Send data without establishing a connection, faster but less reliable. -Connection-oriented protocols (e.g., TCP): Establish a connection before sending data, ensuring reliable delivery.