Questions and Answers
TCP port 1720 is used by?
Which of the following TCP ports needs to be opened to secure the directory service with SSL/TLS encryption?
TCP port 389 is the default network port for?
Which of the TCP port numbers is assigned to the Internet Message Access Protocol (IMAP)?
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Post Office Protocol v3 (POP3) uses?
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Which of the following protocols runs on TCP port 445?
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Which of the ports listed below are assigned to the Session Initiation Protocol (SIP)? (Select 2 answers)
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Network Time Protocol (NTP) runs on UDP port?
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Which port needs to be opened for Remote Desktop Protocol (RDP)?
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SNMP runs on UDP port?
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Which of the following ports is used by HTTPS?
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TCP port 80 is assigned to?
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Dynamic Host Configuration Protocol (DHCP) runs on? (Select 2 answers)
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Which of the TCP ports listed below is used by Telnet?
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UDP port 69 is assigned to?
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Which port enables the FTP's Data Connection for sending file data?
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The File Transfer Protocol (FTP) Control Connection for administering a session is established through?
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Unblocking TCP port 22 enables what type of traffic? (Select 2 answers)
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Secure File Transfer Protocol (SFTP) runs by default on TCP port 22.
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TCP port 25 is used by?
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Which of the following UDP ports is assigned to the Domain Name System (DNS)?
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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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Test your knowledge of TCP and UDP port assignments with these flashcards. Each card presents a specific port question, requiring you to identify the correct service associated with it. Perfect for networking students and IT professionals.