------------------- is/ are caused by the random motion of the electrons in a wire and is unavoidable.

A. Dispersion

B. Thermal noise

C. Delay distortion

D. all of these

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

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  1. What is the address identified when socket is available at each end of TCP?
  2. preamble field of 802.3 frames is encoded using ------------------- encoding
  3. How many 64-Kbps channels are used on an ISDN BRI?
  4. TCP protocol is responsible for connection-oriented communication
  5. A router receives an IP packet with source IP address and destination IP address…
  6. Which type of connector is used on 10Base2 networks?
  7. What is the default subnet mask for a class B network?
  8. What are the subnet mask in dotted decimal notation for /20 networks?
  9. Thick Ethernet cable uses what type of connector? Select all that apply.
  10. Which class of IP addressing was not brought in much use?
  11. What is the default subnet mask for a class A network?
  12. Select the class C IP address from the following:
  13. Which is the port used by HTTPS?
  14. What is the pattern of a preamble?
  15. Which layer use User Datagram Protocol (UDP) and Transmission Control Protocol (TCP)?
  16. Select the standard for token ring using token-passing media access.
  17. Which of the following provides control over multimedia sessions?
  18. Network administrator checks whether all the devices connected to the end-to-end path are _________-enabled.
  19. What is the default port for Telnet?
  20. Which type of BGP message is sent by a system to notify another router of the senders existence?
  21. What is the maximum length of thick Ethernet cable before a signal booster is needed?
  22. E-mail is an example of ………………………… mode…
  23. Using a class B address maximum of …………………networks can be…
  24. Which of the following can provide a backbone network of 600 meters in length without using repeaters?
  25. AppleTalk protocol configures hosts in zones on the network.
  26. …………………………..combines characteristics of…
  27. Which directory service is used in Windows 2000 Server?
  28. Which of the following protocols is described in RFC 793?
  29. Which is the port used by POP3?
  30. Class C network address class supports 65,534 hosts.