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

A. 20

B. 21

C. 23

D. 25

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. AppleTalk protocol configures hosts in zones on the network.
  2. Which cable type is immune to outside interference and crosstalk?
  3. Which of the following application uses 1.5 Mbps bandwidth?
  4. ------------------- is/ are caused by the random motion of the electrons in a wire and is unavoidable.
  5. What is used to boost a digital signal?
  6. Which of these cable is/are used to connect devices to hubs and switches.
  7. What is the maximum length of thinnet cable before a signal booster is needed?
  8. TCP protocol is responsible for logical addressing and delivery of packets.
  9. ___________ is based on resources that are present within the Diffserv region.
  10. The idea of sharing one network address among the multiple physical networks can be done using the following…
  11. What is the default subnet mask for a class B network?
  12. You are browsing www.microsoft.com on a machine named host.contoso.org.. What is the order of domain…
  13. DSL stands for ------------------------
  14. The general form of the SMTP destination address is ________________.
  15. The key concern in the design of transmission system is -------------- and ---------------
  16. Your Web server is also configured as an FTP server. What part of the data packet will tell the server…
  17. Which of the following SIP request terminates a call?
  18. How many number of host/machine can be attached to a network using a class B address?
  19. What is the length of MARKER field in BGP message header?
  20. You wish to install a 100BaseT network. What type of cabling will you use?
  21. 25 is used by SMTP
  22. At which layer of the OSI model do FTP, SMTP, POP3, and HTTP function?
  23. What is 10baseT?
  24. Which class does the IP address belong to?
  25. Which of the following is the port used by SMTP?
  26. Which of the following network topologies has the highest level of redundancy?
  27. 17. Which of the following use default routes for inter-domain routing?
  28. BGP is …………………………………….routing…
  29. A financial institution that issues the card to the purchaser is ________.
  30. Which of the following headers does a router look at to find how to route a data packet?