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Questions and Answers
TCP port 1720 is used by?
TCP port 1720 is used by?
- H.323 (correct)
- SMB
- SNMP
- LDAPS
Which of the following TCP ports needs to be opened to secure the directory service with SSL/TLS encryption?
Which of the following TCP ports needs to be opened to secure the directory service with SSL/TLS encryption?
- 636 (correct)
- 389
- 1720
- 443
TCP port 389 is the default network port for?
TCP port 389 is the default network port for?
- LDAP (correct)
- SMB
- RDP
- LDAPS
Which of the TCP port numbers is assigned to the Internet Message Access Protocol (IMAP)?
Which of the TCP port numbers is assigned to the Internet Message Access Protocol (IMAP)?
Post Office Protocol v3 (POP3) uses?
Post Office Protocol v3 (POP3) uses?
Which of the following protocols runs on TCP port 445?
Which of the following protocols runs on TCP port 445?
Which of the ports listed below are assigned to the Session Initiation Protocol (SIP)? (Select 2 answers)
Which of the ports listed below are assigned to the Session Initiation Protocol (SIP)? (Select 2 answers)
Network Time Protocol (NTP) runs on UDP port?
Network Time Protocol (NTP) runs on UDP port?
Which port needs to be opened for Remote Desktop Protocol (RDP)?
Which port needs to be opened for Remote Desktop Protocol (RDP)?
SNMP runs on UDP port?
SNMP runs on UDP port?
Which of the following ports is used by HTTPS?
Which of the following ports is used by HTTPS?
TCP port 80 is assigned to?
TCP port 80 is assigned to?
Dynamic Host Configuration Protocol (DHCP) runs on? (Select 2 answers)
Dynamic Host Configuration Protocol (DHCP) runs on? (Select 2 answers)
Which of the TCP ports listed below is used by Telnet?
Which of the TCP ports listed below is used by Telnet?
UDP port 69 is assigned to?
UDP port 69 is assigned to?
Which port enables the FTP's Data Connection for sending file data?
Which port enables the FTP's Data Connection for sending file data?
The File Transfer Protocol (FTP) Control Connection for administering a session is established through?
The File Transfer Protocol (FTP) Control Connection for administering a session is established through?
Unblocking TCP port 22 enables what type of traffic? (Select 2 answers)
Unblocking TCP port 22 enables what type of traffic? (Select 2 answers)
Secure File Transfer Protocol (SFTP) runs by default on TCP port 22.
Secure File Transfer Protocol (SFTP) runs by default on TCP port 22.
TCP port 25 is used by?
TCP port 25 is used by?
Which of the following UDP ports is assigned to the Domain Name System (DNS)?
Which of the following UDP ports is assigned to the Domain Name System (DNS)?
Secure Shell (SSH) protocol runs on?
Secure Shell (SSH) protocol runs on?
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Study Notes
TCP Ports
- TCP Port 1720 is utilized by H.323, establishing a protocol for multimedia communication.
- TCP Port 636 is required for SSL/TLS encryption in directory services, enhancing security.
- TCP Port 389 serves as the default port for LDAP (Lightweight Directory Access Protocol).
- TCP Port 445 is primarily used by SMB/CIFS, facilitating file sharing and printer access in Windows networks.
- TCP Port 3389 is designated for Remote Desktop Protocol (RDP), enabling remote management and troubleshooting.
UDP Ports
- UDP Port 123 is used by the Network Time Protocol (NTP) for clock synchronization between devices.
- UDP Port 161 is associated with SNMP (Simple Network Management Protocol) for monitoring network devices.
- UDP Port 53 is utilized by the Domain Name System (DNS) for resolving domain names to IP addresses.
File Transfer Protocols
- TCP Port 20 establishes the data connection for File Transfer Protocol (FTP) for sending file data.
- TCP Port 21 is used for the control connection in FTP sessions, managing the commands for file transfers.
- UDP Port 69 is designated for TFTP (Trivial File Transfer Protocol), a simpler version of FTP.
Secure Protocols
- TCP Port 22 is utilized by SSH (Secure Shell) for secure remote administration and file transfers, including SFTP (Secure File Transfer Protocol).
- TCP Port 443 is associated with HTTPS (Hypertext Transfer Protocol Secure) for secure web transactions.
Other Important Ports
- TCP Port 25 is used by SMTP (Simple Mail Transfer Protocol) for email transmission.
- TCP Port 143 is designated for IMAP (Internet Message Access Protocol) which is used for accessing emails on a mail server.
- TCP Port 110 is the port for POP3 (Post Office Protocol version 3), another protocol for retrieving emails.
DHCP Ports
- UDP Ports 67 and 68 are critical for the operation of the Dynamic Host Configuration Protocol (DHCP), automating IP address assignment within networks.
Miscellaneous
- UDP Port 137 is used for NetBIOS Name Service, part of Windows Network protocols.
- TCP Port 5060 and 5061 are used by SIP (Session Initiation Protocol) for initiating multimedia communications, such as VoIP calls.
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