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FTP servers by default listen on port ________ for incoming connections from FTP clients.

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A. 20

B. 21

C. 23

D. 25

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Correct Answer : B.


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Related Questions

  1. What is the default subnet mask for a class A network?
  2. …………………… have a single communication channel that is…
  3. How many table entries are supported by global routing table in CIDR?
  4. A network's Internet connection uses a 128-Kbps Basic Rate Interface (BRI). What type of connection…
  5. What is the distance limitation of Cat5 UTP?
  6. Your Web server is also configured as an FTP server. What part of the data packet will tell the server…
  7. Which of the following states suggests that the connection has been ended either at the request of the…
  8. Which of the following is used for establishing, configuring, and testing the data-link Link Control…
  9. The idea of sharing one network address among the multiple physical networks can be done using the following…
  10. _______ Domain name corresponds to US military.
  11. What is the default subnet mask for a class B network?
  12. Which of the following SIP request terminates a call?
  13. What is the default port for Telnet?
  14. T1 makes up 24 channels.
  15. In FTP, to execute a file transfer, the user begins by _________.
  16. Which of the following request in Session Initiation Protocol (SIP) queries the capabilities of servers?
  17. At which layer of the OSI model do FTP, SMTP, POP3, and HTTP function?
  18. In Integrated services model, ________ corresponds to token bucket filter.
  19. Which of the following is required to communicate between two computers?
  20. The worldwide Internet is a well-known example of ------------------.
  21. What are the subnet mask in dotted decimal notation for /20 networks?
  22. If user A wants to send an encrypted message to user B, the plaintext is encrypted with the public key…
  23. In an active mode if any FTP client sends the port command "PORT 192,168,0,1,4,1" then what will be…
  24. A node, which is more powerful, and can handle local information processing or graphics processing is…
  25. In the symmetric-key method of cryptography, which key is publicly known?
  26. Which of the following protocol is used by Integrated Services for signaling of the reservation messages?
  27. ________allows receiver to inform sender about the successful receiving of all the segments.
  28. Which of the following is the port used by SMTP?
  29. Router B receives an update from router A that indicates Net1 is two hops away. The next update from…
  30. Which of the following use default routes for inter domain routing?

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