Ports Ports Ports
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Questions and Answers

Which protocol listed is used for both receiving mail and sending mail?

  • FTP
  • POP3
  • IMAP
  • SMTP (correct)

Which protocol uses both TCP and UDP ports to communicate with servers?

  • RDP
  • SNMP
  • SMB (correct)
  • LDAP

Which of these protocols uses a control port and a separate data port?

  • FTP (correct)
  • Telnet
  • SMTP
  • SSH

Which of these networking protocols uses a version that utilizes authentication and encryption to secure communication?

<p>SNMP (D)</p> Signup and view all the answers

Which protocol operates on a port associated with securing remote shell access?

<p>SSH (D)</p> Signup and view all the answers

Which protocol operates on port 443 and is commonly used for secure web browsing?

<p>HTTPS (C)</p> Signup and view all the answers

Which protocol uses port 137 for name resolution?

<p>SMB (B)</p> Signup and view all the answers

Which protocol is primarily used for transferring files between computer systems?

<p>FTP (C)</p> Signup and view all the answers

Which protocol uses UDP port 53 for communication?

<p>DNS (C)</p> Signup and view all the answers

Which of these protocols is used for remote desktop access and operates on port 3389?

<p>RDP (D)</p> Signup and view all the answers

Which protocol, commonly used for accessing remote desktops, utilizes TCP port 3389 for communication?

<p>RDP (C)</p> Signup and view all the answers

Which protocol uses port 137 to perform name resolution?

<p>SMB (A)</p> Signup and view all the answers

Which of the following protocols is NOT associated with the transmission of email?

<p>DHCP (A)</p> Signup and view all the answers

Which protocol operates on both TCP and UDP ports to function effectively?

<p>SMB (C)</p> Signup and view all the answers

Which protocol is used for securing remote shell access with a standard port of 22?

<p>SSH (B)</p> Signup and view all the answers

Which protocol operates on TCP port 25?

<p>SMTP (C)</p> Signup and view all the answers

Which protocol is associated with UDP ports 67 and 68?

<p>DHCP (D)</p> Signup and view all the answers

Which protocol is known for using TCP ports 139 and 445?

<p>SMB (C)</p> Signup and view all the answers

Which of the following protocols uses UDP port 161 for queries?

<p>SNMP (D)</p> Signup and view all the answers

Flashcards

FTP (File Transfer Protocol)

A protocol used to transfer files between computers over a network. It uses two ports: TCP/20 for data and TCP/21 for control.

SSH (Secure Shell)

A secure protocol that allows users to remotely access and manage computer systems. Uses TCP/22 port.

SMTP (Simple Mail Transfer Protocol)

A protocol used for sending emails over a network. Uses TCP/25 port.

DNS (Domain Name System)

A protocol that translates domain names(like google.com ) into IP addresses ( like 172.217.17.142 ). Uses UDP/53 port.

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SNMP (Simple Network Management Protocol)

A protocol used for managing network devices remotely, like routers and switches. Uses UDP/161 for queries and UDP/162 for traps.

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What is FTP?

A protocol used to transfer files between computers over a network. It uses two ports: TCP/20 for data and TCP/21 for control.

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What is SMTP?

A protocol used for sending email. It uses TCP/25 port.

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What is SSH?

A secure protocol used for accessing and managing computer systems remotely, using TCP/22 port

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What is DNS?

A protocol used for translating domain names into IP addresses, using UDP/53 port.

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What is SNMP?

A protocol used for managing network devices remotely, e.g., routers and switches. Uses UDP/161 for queries and UDP/162 for traps.

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FTP: How does it transfer files?

A protocol used for transferring files between computers. It has two ports: TCP/20 for data and TCP/21 for control.

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SMTP: How does it work?

A protocol that allows users to send emails. It utilizes the TCP/25 port.

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What is FTP (File Transfer Protocol)?

A protocol that securely transfers files between computers over a network. It uses separate ports for data (TCP/20) and control (TCP/21).

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What is SSH (Secure Shell)?

A secure protocol that allows remote access and management of computer systems. It uses port TCP/22 for communication.

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What is SMTP (Simple Mail Transfer Protocol)?

A protocol used to send emails over a network. It uses port TCP/25 to transmit email messages.

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What is DNS (Domain Name System)?

A protocol that translates domain names (like google.com) into IP addresses (like 172.217.17.142). It uses UDP/53 port.

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What is SNMP (Simple Network Management Protocol)?

A protocol used for managing network devices remotely. It uses UDP/161 for queries and UDP/162 for sending alerts (traps).

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Study Notes

Network Protocols and Ports

  • FTP (File Transfer Protocol): Used for transferring files between systems.
    • Active mode data: TCP port 20
    • Control connection: TCP port 21
  • SSH (Secure Shell): Secure protocol for remote login and command execution.
    • Port: TCP port 22
  • Telnet: Non-encrypted protocol for remote login.
    • Port: TCP port 23
  • SMTP (Simple Mail Transfer Protocol): Used for sending email.
    • Port: TCP port 25
  • Receiving Email (POP3 & IMAP):
    • POP3: TCP port 110
    • IMAP: TCP port 143
  • DNS (Domain Name System): Translates domain names to IP addresses.
    • Port: UDP port 53
  • DHCP (Dynamic Host Configuration Protocol): Assigns IP addresses to devices on a network.
    • Server port: UDP port 67
    • Client port: UDP port 68
  • HTTP (Hypertext Transfer Protocol): Used for retrieving web pages.
    • Port: TCP port 80
  • HTTPS (Hypertext Transfer Protocol Secure): Secure version of HTTP.
    • Port: TCP port 443
  • SMB (Server Message Block): Microsoft's protocol for file sharing.
    • Port: TCP port 139 (name resolution)
    • Alternative/additional port: TCP port 445 (for file transfer)
    • NetBIOS over TCP/IP use: UDP port 137 (name resolution)
  • SNMP (Simple Network Management Protocol): Network management protocol.
    • Queries: UDP port 161
    • Traps: UDP port 162
  • LDAP (Lightweight Directory Access Protocol): Used to access directory services.
    • Port: TCP port 389
  • RDP (Remote Desktop Protocol): Used for remote desktop connections.
    • Port: TCP port 3389

Different versions of protocol V1-V3

  • V1: Original version, sending data in clear text, with structured tables.
    • Queries use UDP port 161
    • Traps use UDP port 162
  • V2: Transfers data, but isn't encrypted.
    • Data in clear text.
  • V3: Secure version, using authentication and encryption.
    • Secure protocol, using authentication and encryption.

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Related Documents

Well Known Port Numbers PDF

Description

Test your knowledge on various network protocols and their associated ports. This quiz covers protocols such as FTP, SSH, Telnet, and more, along with their specific TCP and UDP ports. Enhance your understanding of how data is transmitted across networks.

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