N10-009-Ports

Question 1

FTP

Answer 1

TCP 20, 21: File Transfer Protocol used for transferring files between a client and a server, with port 20 for data transfer and port 21 for control.

Question 2

SFTP

Answer 2

TCP 22: Secure File Transfer Protocol, a secure method of transferring files using SSH for encryption.

Question 3

SSH

Answer 3

TCP 22: Secure Shell Protocol provides encrypted remote access and command execution over a network.

Question 4

Telnet

Answer 4

TCP 23: Provides unencrypted remote terminal access to devices for management purposes.

Question 5

SMTP

Answer 5

TCP 25: Simple Mail Transfer Protocol used for sending emails between servers.

Question 6

DNS

Answer 6

UDP/TCP 53: Domain Name System resolves domain names to IP addresses (UDP for queries, TCP for zone transfers).

Question 7

DHCP

Answer 7

UDP 67/68: Dynamic Host Configuration Protocol assigns IP addresses dynamically to devices in a network.

Question 8

TFTP

Answer 8

UDP 69: Trivial File Transfer Protocol, a lightweight protocol for transferring files without authentication.

Question 9

HTTP

Answer 9

TCP 80: HyperText Transfer Protocol, the foundation of the World Wide Web, used for transmitting web pages.

Question 10

NTP

Answer 10

UDP 123: Network Time Protocol synchronizes clocks of network devices to a common time source.

Question 11

SNMP

Answer 11

UDP 161/162: Simple Network Management Protocol used for monitoring and managing network devices.

Question 12

LDAP

Answer 12

TCP 389: Lightweight Directory Access Protocol allows access to and management of directory services.

Question 13

HTTPS

Answer 13

TCP 443: Secure version of HTTP using TLS/SSL for encrypting communication on the web.

Question 14

SMB

Answer 14

TCP 445: Server Message Block Protocol used for file sharing, printer sharing, and interprocess communication.

Question 15

Syslog

Answer 15

UDP 514: System Logging Protocol for collecting and storing log messages from network devices.

Question 16

SMTPS

Answer 16

TCP 587, 465: Secure Mail Transfer Protocol for encrypted email communication.

Question 17

LDAPS

Answer 17

TCP 636: Secure version of LDAP that uses TLS/SSL for encrypting directory service access.

Question 18

SQL

Answer 18

TCP 1433: Microsoft SQL Server Protocol used for database communication.

Question 19

RDP

Answer 19

TCP 3389: Remote Desktop Protocol provides remote graphical access to a Windows machine.

Question 20

SIP

Answer 20

TCP/UDP 5060/5061: Session Initiation Protocol used for initiating, maintaining, and terminating VoIP and multimedia communication sessions.

Question 21

RADIUS

Answer 21

UDP ports 1812-1813 or UDP ports 1645-1646

Question 22

TACACS+ ports

Answer 22

Cisco enterprise wifi - connects devices like routers - TCP port 49