Network+ Ports Quiz

Reviewed by Godwin Iheuwa
Godwin Iheuwa, MS (Computer Science) |
Computer Science
Review Board Member
Godwin is a proficient Database Administrator currently employed at MTN Nigeria. He holds as MS in Computer Science from the University of Bedfordshire, where he specialized in Agile Methodologies and Database Administration. He also earned a Bachelor's degree in Computer Science from the University of Port Harcourt. With expertise in SQL Server Integration Services (SSIS) and SQL Server Management Studio, Godwin's knowledge and experience enhance the authority of our quizzes, ensuring accuracy and relevance in the realm of computer science.
, MS (Computer Science)
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Network+ Ports Quiz - Quiz

Check out this challenging "Network+ Ports Quiz" and test your knowledge regarding different ports and the assigned numbers they contain. The quiz is based on the networking ports and their numbers. Basically, a port number is a way to identify a specific process through which any message over the internet is forwarded and reaches a server. All networking devices contain a particular port number. Do you think you can quickly tell the numbers of various standardized ports? Try the quiz below and see for yourself. All the best!


Questions and Answers
  • 1. 

    SSH port number is

    • A.

      22

    • B.

      21

    • C.

      25

    • D.

      110

    Correct Answer
    A. 22
    Explanation
    The correct answer is 22 because SSH (Secure Shell) is a network protocol that allows secure remote login and file transfer. By default, SSH uses port number 22 for communication. This port number is standardized and widely recognized as the default port for SSH connections.

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  • 2. 

    FTP port number is

    • A.

      22

    • B.

      21

    • C.

      53

    • D.

      25

    Correct Answer
    B. 21
    Explanation
    The correct answer is 21. FTP (File Transfer Protocol) uses port number 21 to establish a connection between a client and a server for transferring files. This port is specifically designated for FTP communication.

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  • 3. 

    HTTPS port number is

    • A.

      123

    • B.

      53

    • C.

      143

    • D.

      443

    Correct Answer
    D. 443
    Explanation
    HTTPS (Hypertext Transfer Protocol Secure) is the secure version of HTTP, the protocol used for transmitting data over the internet. It uses encryption to protect the data being transmitted, ensuring privacy and security. The default port number for HTTPS is 443. This means that when a client wants to establish a secure connection with a server using HTTPS, it will typically connect to port 443 on the server. By using this specific port number, the client and server can communicate securely and exchange encrypted data, preventing unauthorized access or tampering.

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  • 4. 

    Telnet port number is

    • A.

      22

    • B.

      80

    • C.

      110

    • D.

      23

    Correct Answer
    D. 23
    Explanation
    Telnet is a network protocol used to establish a remote connection with a device over the internet or a local network. The Telnet port number refers to the specific port on which the Telnet service listens for incoming connections. In this case, the correct answer is 23, as it is the standard port number for Telnet communication.

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  • 5. 

    DHCP port number is

    • A.

      50

    • B.

      67

    • C.

      80

    • D.

      69

    Correct Answer
    B. 67
    Explanation
    The correct answer is 67. DHCP (Dynamic Host Configuration Protocol) uses port number 67 for the server to receive client requests. DHCP is responsible for assigning IP addresses and other network configuration parameters to devices on a network. By using port number 67, the DHCP server can listen for incoming client requests and respond with the necessary configuration information.

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  • 6. 

    HTTP port number is

    • A.

      443

    • B.

      80

    • C.

      69

    • D.

      123

    Correct Answer
    B. 80
    Explanation
    The correct answer is 80 because HTTP (Hypertext Transfer Protocol) uses port number 80 as the default port for communication. When a client sends an HTTP request to a server, it will typically connect to port 80 on the server to establish the connection and transmit the request. This allows the server to correctly route and handle the HTTP traffic.

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  • 7. 

    SMTP port number is

    • A.

      443

    • B.

      143

    • C.

      22

    • D.

      25

    Correct Answer
    D. 25
    Explanation
    SMTP (Simple Mail Transfer Protocol) is the standard protocol used for sending emails. It operates on port number 25. Therefore, the correct answer is 25.

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  • 8. 

    DNS port number is

    • A.

      23

    • B.

      143

    • C.

      53

    • D.

      123

    Correct Answer
    C. 53
    Explanation
    The correct answer is 53. DNS (Domain Name System) uses port number 53 for communication between DNS servers and clients. This port is specifically reserved for DNS queries and responses. When a client sends a DNS query to a DNS server, it uses port 53 to establish a connection and retrieve the requested information. Similarly, when a DNS server responds to a query, it sends the response back to the client using port 53. Therefore, port number 53 is essential for the functioning of the DNS protocol.

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  • 9. 

    NTP port number is

    • A.

      23

    • B.

      143

    • C.

      123

    • D.

      443

    Correct Answer
    C. 123
    Explanation
    The correct answer is 123. The NTP (Network Time Protocol) port number is 123. NTP is a protocol used to synchronize the time on computer systems. It uses UDP (User Datagram Protocol) as its transport protocol and operates on port number 123. By using NTP, devices can maintain accurate time and synchronize their clocks with a reliable time source.

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  • 10. 

    TFTP port number is

    • A.

      443

    • B.

      67

    • C.

      69

    • D.

      161

    Correct Answer
    C. 69
    Explanation
    The correct answer is 69. TFTP (Trivial File Transfer Protocol) uses port number 69 for communication. TFTP is a simple file transfer protocol that is often used for transferring files between network devices. The port number 69 is specifically assigned to TFTP, allowing devices to establish a connection and transfer files using this protocol.

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  • 11. 

    Port number of IMAP4 is

    • A.

      443

    • B.

      23

    • C.

      143

    • D.

      123

    Correct Answer
    C. 143
    Explanation
    The correct answer is 143. IMAP4 is a protocol used for retrieving emails from a mail server. The default port number for IMAP4 is 143. This port is used to establish a connection between the email client and the mail server, allowing the client to retrieve and manage emails stored on the server.

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  • 12. 

    SNMP port number is

    • A.

      25

    • B.

      443

    • C.

      161

    • D.

      67

    Correct Answer
    C. 161
    Explanation
    The correct answer is 161. SNMP (Simple Network Management Protocol) uses port number 161 for communication. It is a protocol used for managing and monitoring network devices. By using SNMP, network administrators can collect information about devices on the network, monitor their performance, and manage configurations remotely. Port number 161 is specifically assigned to SNMP, allowing devices to send and receive SNMP messages for network management purposes.

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  • 13. 

    110 is the port number for

    • A.

      SSH

    • B.

      IMAP4

    • C.

      POP3

    • D.

      SMTP

    Correct Answer
    C. POP3
    Explanation
    110 represents the port number used by the POP3 (Post Office Protocol version 3) protocol. POP3 is a standard protocol used for receiving emails from a remote server to a local email client. The port number 110 is specifically assigned to POP3, allowing the email client to establish a connection with the POP3 server and retrieve incoming emails.

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  • 14. 

    21 is the port number for

    • A.

      POP3

    • B.

      IMAP

    • C.

      FTP

    • D.

      443

    Correct Answer
    C. FTP
    Explanation
    The number 21 represents FTP (File Transfer Protocol). FTP is a standard network protocol used for transferring files between a client and a server on a computer network. Port 21 is the default port for FTP connections.

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  • 15. 

    143 is the port number for

    • A.

      DNS

    • B.

      TFTP

    • C.

      IMAP4

    • D.

      TELNET

    Correct Answer
    C. IMAP4
    Explanation
    143 represents IMAP4 because it is the standard port number used by the IMAP4 protocol. IMAP4 is a protocol used for retrieving email messages from a mail server. Port numbers are used to identify specific services or protocols on a network, and in this case, port 143 is specifically assigned to IMAP4.

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  • 16. 

    67 is the port number for

    • A.

      SSH

    • B.

      SMTP

    • C.

      DHCP

    • D.

      DNS

    Correct Answer
    C. DHCP
    Explanation
    67 represents DHCP. DHCP stands for Dynamic Host Configuration Protocol and it is a network management protocol used to automatically assign IP addresses and other network configuration settings to devices on a network. Port number 67 is used by DHCP server to listen for client requests.

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  • 17. 

    69 is the port number for

    • A.

      SMTP

    • B.

      POP3

    • C.

      HTTPS

    • D.

      TFTP

    Correct Answer
    D. TFTP
    Explanation
    TFTP stands for Trivial File Transfer Protocol, which is a simple protocol used for transferring files between devices on a network. It is typically used for transferring small files, such as firmware updates or configuration files, and is often used in network booting scenarios. The number 69 represents the well-known port number that is assigned to TFTP for communication purposes. Therefore, the correct answer is TFTP.

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  • 18. 

    123 is the port number for

    • A.

      FTP

    • B.

      TELNET

    • C.

      NTP

    • D.

      HTTP

    Correct Answer
    C. NTP
    Explanation
    123 represents NTP (Network Time Protocol). NTP is a networking protocol used for clock synchronization between computer systems over packet-switched, variable-latency data networks. It is designed to synchronize the time of a computer or network device to a reference time source, such as a radio or atomic clock. The number 123 is associated with NTP as it is the default port number used by NTP for communication.

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  • 19. 

    What transport protocol is typically associated with SSH on port 22?

    • A.

      TCP

    • B.

      UDP

    • C.

      Not clear

    • D.

      None

    Correct Answer
    A. TCP
    Explanation
    The given answer, TCP, is the correct one because SSH (Secure Shell) is a protocol that provides secure remote login and file transfer over an unsecured network. TCP (Transmission Control Protocol) is the most commonly used transport layer protocol in the Internet protocol suite, and it ensures reliable and ordered delivery of data packets between devices. Therefore, SSH uses TCP as its underlying transport protocol to establish a secure connection between the client and the server.

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  • 20. 

    What transport protocol is typically associated with TELNET on port 23?

    • A.

      TCP

    • B.

      UDP

    • C.

      Both

    • D.

      None

    Correct Answer
    A. TCP
    Explanation
    The correct answer is TCP because TELNET, which is a protocol used for remote terminal connections, primarily operates over TCP. TCP ensures reliable and ordered delivery of data packets, making it suitable for interactive applications like TELNET where the user expects a consistent and error-free connection. UDP, on the other hand, is a connectionless protocol that does not guarantee reliable delivery, making it less suitable for TELNET.

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  • 21. 

    What transport protocol is typically associated with SMTP on port 25?

    • A.

      TCP

    • B.

      UDP

    • C.

      Both

    • D.

      None

    Correct Answer
    A. TCP
    Explanation
    SMTP (Simple Mail Transfer Protocol) is a protocol used for sending email messages over the internet. It operates on port 25. TCP (Transmission Control Protocol) is a reliable and connection-oriented protocol that ensures the delivery of data packets in the correct order. Since SMTP requires reliable and ordered delivery of email messages, it uses TCP as its underlying transport protocol. Therefore, the correct answer is TCP.

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  • 22. 

    Which network port is commonly used for secure web browsing over HTTPS?

    • A.

      Port 80 

    • B.

      Port 25 

    • C.

      Port 443 

    • D.

      Port 22

    Correct Answer
    C. Port 443 
    Explanation
    Port 443 is the correct answer. It is commonly used for secure web browsing over HTTPS (Hypertext Transfer Protocol Secure), which encrypts the data transmitted between the client (browser) and the web server, ensuring data security and privacy.

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  • 23. 

    What transport protocol is typically associated with HTTP on port 80?

    • A.

      TCP

    • B.

      UDP

    • C.

      Both

    • D.

      None

    Correct Answer
    A. TCP
    Explanation
    The correct answer is TCP because HTTP (Hypertext Transfer Protocol) uses TCP as its underlying transport protocol. TCP provides a reliable, connection-oriented communication between the client and the server, ensuring that all data packets are delivered in order and without errors. HTTP, being an application layer protocol, relies on TCP to establish and maintain a connection with the server, allowing for the transfer of hypertext documents over the internet. Therefore, TCP is the appropriate protocol for HTTP communication on port 80.

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  • 24. 

    What transport protocol is typically associated with POP3 on port 110?

    • A.

      UDP

    • B.

      TCP

    • C.

      Both

    • D.

      None

    Correct Answer
    B. TCP
    Explanation
    The correct answer is TCP because POP3 (Post Office Protocol version 3) is a protocol used for receiving email from a remote server. TCP (Transmission Control Protocol) is the most commonly used transport protocol for email communication, ensuring reliable and ordered delivery of data packets. UDP (User Datagram Protocol) is a connectionless protocol that does not guarantee reliable delivery, making it unsuitable for POP3. Therefore, TCP is the appropriate choice for POP3 communication.

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  • 25. 

     What transport protocol is typically associated with IMAP4 on port 143?

    • A.

      UDP

    • B.

      TCP

    • C.

      Both

    • D.

      None

    Correct Answer
    B. TCP
    Explanation
    IMAP4 (Internet Message Access Protocol version 4) is a protocol used for retrieving emails from a mail server. It operates on port 143. TCP (Transmission Control Protocol) is a connection-oriented protocol that ensures reliable and ordered delivery of data packets over a network. Since IMAP4 requires a reliable and ordered delivery of email data, it uses TCP as the underlying transport protocol. Therefore, the correct answer is TCP.

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  • 26. 

    What transport protocol is typically associated with HTTPS on port 443?

    • A.

      TCP

    • B.

      UDP

    • C.

      Can't tell

    • D.

      Not clear

    Correct Answer
    A. TCP
    Explanation
    The correct answer is TCP because HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that uses TCP as its transport protocol. TCP (Transmission Control Protocol) is a reliable, connection-oriented protocol that guarantees the delivery of data packets in the correct order. Since HTTPS requires secure and reliable communication, it relies on TCP to establish a connection and ensure the secure transmission of data over port 443.

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  • 27. 

    What transport protocol is typically associated with DHCP on port 67?

    • A.

      TCP

    • B.

      UDP

    • C.

      Not clear

    • D.

      None

    Correct Answer
    B. UDP
    Explanation
    DHCP (Dynamic Host Configuration Protocol) is a network protocol used to automatically assign IP addresses and other network configuration parameters to devices on a network. Port 67 is the default port used by DHCP servers to listen for DHCP client requests. UDP (User Datagram Protocol) is a connectionless protocol that is commonly used for DHCP communication. It is a lightweight protocol that does not require a connection to be established before data can be transmitted. Therefore, the correct answer is UDP.

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  • 28. 

    What transport protocol is typically associated with TFTP on port 69?

    • A.

      UDP

    • B.

      TCP

    • C.

      Not clear

    • D.

      Can't tell

    Correct Answer
    A. UDP
    Explanation
    The given answer is UDP because TFTP (Trivial File Transfer Protocol) typically runs on UDP (User Datagram Protocol) as its transport protocol. UDP is a connectionless protocol that provides a simple and lightweight way to transfer data over a network. It is commonly used for applications that require fast and efficient data transmission, such as real-time streaming or gaming. TCP (Transmission Control Protocol) is a connection-oriented protocol that ensures reliable and ordered delivery of data, but it is not commonly used for TFTP.

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  • 29. 

    What transport protocol is typically associated with NTP on port 123?

    • A.

      TCP

    • B.

      UDP

    • C.

      Not clear

    • D.

      Can't tell

    Correct Answer
    B. UDP
    Explanation
    The Network Time Protocol (NTP) is typically associated with UDP (User Datagram Protocol) on port 123. NTP is used for synchronizing the clocks of computer systems over a network. UDP is chosen for NTP because it provides a lightweight and connectionless communication, suitable for time synchronization where a reliable, ordered delivery of messages is not as critical as a quick response.

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  • 30. 

    What transport protocol is typically associated with SNMP on port 161?

    • A.

      TCP

    • B.

      UDP

    • C.

      Not clear

    • D.

      None

    Correct Answer
    B. UDP
    Explanation
    The given answer "UDP" is correct because SNMP (Simple Network Management Protocol) primarily uses UDP (User Datagram Protocol) as its transport protocol. UDP is a connectionless protocol that provides a lightweight and fast way to transmit data over a network. SNMP uses UDP for its simplicity and low overhead, making it suitable for network management tasks where real-time data transmission is not critical. TCP (Transmission Control Protocol) is not used by SNMP for its transport protocol.

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Godwin Iheuwa |MS (Computer Science) |
Computer Science
Godwin is a proficient Database Administrator currently employed at MTN Nigeria. He holds as MS in Computer Science from the University of Bedfordshire, where he specialized in Agile Methodologies and Database Administration. He also earned a Bachelor's degree in Computer Science from the University of Port Harcourt. With expertise in SQL Server Integration Services (SSIS) and SQL Server Management Studio, Godwin's knowledge and experience enhance the authority of our quizzes, ensuring accuracy and relevance in the realm of computer science.

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  • Current Version
  • Jan 16, 2024
    Quiz Edited by
    ProProfs Editorial Team

    Expert Reviewed by
    Godwin Iheuwa
  • Dec 11, 2010
    Quiz Created by
    Jcamp
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