Trivia Quiz On Identifying Well-known Ports!

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| By Joana Pita
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Trivia Quiz On Identifying Well-known Ports! - Quiz

A port number is a way to identify a specific process to which an Internet or other network message is to be forwarded when it arrives at a server. This quiz has been created to test your knowledge about ports and protocols. So, let's try out the quiz. All the best!


Questions and Answers
  • 1. 

    Which port is used by the File Transfer Protocol (FTP)?

    • A.

      21

    • B.

      212

    • C.

      112

    • D.

      12

    • E.

      23

    Correct Answer
    A. 21
    Explanation
    FTP uses port number 21. This is the standard port assigned to FTP for transferring files between a client and a server over a network. The client initiates a connection to the server on port 21 and then sends commands and data through this port to transfer files.

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  • 2. 

    Which port is used by the Network Time Protocol (NTP)?

    • A.

      124

    • B.

      123

    • C.

      121

    • D.

      122

    • E.

      125

    Correct Answer
    B. 123
    Explanation
    The correct answer is 123. The Network Time Protocol (NTP) uses port number 123 for communication. NTP is a protocol used to synchronize the clocks of computers over a network. By using port 123, NTP can send and receive time information between clients and servers, ensuring accurate timekeeping across the network.

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  • 3. 

    Which port is used by the NetBIOS Name Service?

    • A.

      133

    • B.

      134

    • C.

      135

    • D.

      136

    • E.

      137

    Correct Answer
    E. 137
    Explanation
    The correct answer is 137. The NetBIOS Name Service uses port 137. NetBIOS is a protocol that allows applications on different computers to communicate within a local area network. The NetBIOS Name Service is responsible for registering and resolving NetBIOS names to IP addresses. Port 137 is used for both sending and receiving NetBIOS name service datagrams.

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  • 4. 

    Which protocol uses port 161?

    • A.

      SNMP

    • B.

      SMTP

    • C.

      POP3

    • D.

      TELNET

    • E.

      NNTP

    Correct Answer
    A. SNMP
    Explanation
    SNMP (Simple Network Management Protocol) uses port 161. SNMP is a protocol used for managing and monitoring network devices. It allows network administrators to collect and organize information about network devices, such as routers, switches, and servers. Port 161 is the default port used by SNMP for sending and receiving SNMP messages. By using this port, SNMP can communicate with network devices and retrieve important information about their status and performance.

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  • 5. 

    Which port is used by the Point-to-Point Tunneling Protocol (PPTP)?

    • A.

      1622

    • B.

      1720

    • C.

      1723

    • D.

      1722

    • E.

      1724

    Correct Answer
    C. 1723
    Explanation
    The correct answer is 1723. The Point-to-Point Tunneling Protocol (PPTP) uses port 1723 for establishing a secure connection between a client and a server over an IP network. This protocol is commonly used for creating virtual private networks (VPNs) and allows for the secure transmission of data between remote locations.

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  • 6. 

    Which port is used by the Trivial File Transfer Protocol (TFTP)

    • A.

      96

    • B.

      69

    • C.

      86

    • D.

      66

    • E.

      36

    Correct Answer
    B. 69
    Explanation
    The correct answer is 69. The Trivial File Transfer Protocol (TFTP) uses port 69 for communication. TFTP is a simple file transfer protocol that is often used for transferring files between network devices. It operates on the User Datagram Protocol (UDP) and does not require authentication or encryption, making it a lightweight and fast option for file transfers.

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  • 7. 

    Which protocol uses port 25?

    • A.

      SMTP

    • B.

      NNTP

    • C.

      SNMP

    • D.

      POP3

    • E.

      TELNET

    Correct Answer
    A. SMTP
    Explanation
    SMTP (Simple Mail Transfer Protocol) is the correct answer because it is the protocol that is used for sending email messages between servers. Port 25 is the default port used by SMTP for communication. SMTP is responsible for the transmission of email messages from the sender's mail server to the recipient's mail server, ensuring that the email reaches its intended destination. Other protocols listed in the options, such as NNTP, SNMP, POP3, and TELNET, do not use port 25 for their operations.

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  • 8. 

    Which port is used by the Domain Naming Service (DNS)?

    • A.

      43

    • B.

      53

    • C.

      63

    • D.

      73

    • E.

      83

    Correct Answer
    B. 53
    Explanation
    The correct answer is 53. Domain Naming Service (DNS) uses port 53 for communication. DNS is responsible for translating domain names into IP addresses, allowing users to access websites using human-readable names instead of numerical IP addresses. By using port 53, DNS servers can send and receive DNS queries and responses, ensuring the proper functioning of the DNS system.

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  • 9. 

    Which port is used by the IMAP mail retrieval protocol?

    • A.

      143

    • B.

      153

    • C.

      163

    • D.

      173

    • E.

      183

    Correct Answer
    A. 143
    Explanation
    The correct answer is 143. IMAP (Internet Message Access Protocol) is a mail retrieval protocol that allows users to access and manage their email on a remote mail server. It operates on port 143, which is the default port for IMAP.

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  • 10. 

    Which port is used by the Windows Internet Naming Service (WINS)?

    • A.

      1492

    • B.

      1502

    • C.

      1512

    • D.

      1522

    • E.

      1532

    Correct Answer
    C. 1512
    Explanation
    The correct answer is 1512. Windows Internet Naming Service (WINS) is a legacy computer name registration and resolution service that maps computer NetBIOS names to IP addresses. It uses TCP/IP port number 1512 for communication between WINS clients and servers.

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  • 11. 

    Which port is used by the Layer 2 Tunneling Protocol (L2TP)?

    • A.

      1601

    • B.

      1501

    • C.

      1401

    • D.

      1301

    • E.

      1701

    Correct Answer
    E. 1701
    Explanation
    The Layer 2 Tunneling Protocol (L2TP) uses port 1701. L2TP is a protocol used for creating virtual private networks (VPNs) and is often used in combination with IPsec for secure communication. Port 1701 is specifically designated for L2TP traffic, allowing for the establishment of tunnels between L2TP clients and servers.

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  • 12. 

    Which protocol uses port 23

    • A.

      TELNET

    • B.

      NNTP

    • C.

      LDAP

    • D.

      SMTP

    • E.

      SNMP

    Correct Answer
    A. TELNET
    Explanation
    TELNET is the correct answer because it is a protocol that allows users to remotely access and control devices over a network. It uses port 23 as the default port for communication. TELNET is commonly used for remote administration and troubleshooting of devices such as routers, switches, and servers. It provides a command-line interface for users to interact with the remote device, allowing them to execute commands and manage configurations. Other protocols listed, such as NNTP, LDAP, SMTP, and SNMP, do not use port 23 for communication.

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  • Current Version
  • Mar 21, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 26, 2007
    Quiz Created by
    Joana Pita
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