Test your basic knowledge |

Wired And Wireless Networks

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The signal degrades to such a point that it cannot be interpreted by the destination host.






2. When utilizing infrastructure mode - the base unit (normally a WAP) will be configured with a _____________. This then becomes the name of the wireless network - and it is broadcast over the airwaves.






3. Occurs when all of the clients communicate directly with each other. There is no base or wireless access point.






4. Telecommunications Industry Association/Electronics Industries Alliance






5. These cables have Teflon coating that makes them more impervious to fire.






6. 568B = Brown - 568A = Brown - BOGB = Brown






7. 11 Mbps (Data Transfer Rate) and 2.4 GHz Frequency






8. 600 Mbps (Data Transfer Rate) and 5 GHz and/or 2.4 GHz Frequency






9. Provides strong authentication to devices that need to connect to the WLAN; it can also be used for regular wired LANs.






10. This means that wireless devices can have more antennas - up to four maximum.






11. What is the most common cable used today?






12. Instead of using crossover cables to connect computers to central connecting devices such as switches - these central connecting devices are equipped with _______ ports - which take care of the cross.






13. For organizations - using - authentication for wireless networks is recommended.






14. Transmits light (photons) instead of electricity - and this light is transmitted over glass or plastic.






15. Used to connect like devices to each other - for example - a computer to another computer - or a switch to another switch.






16. 568B = Orange - 568A = Green - BOGB = Blue






17. You could also use electromagnetic shielding on devices that might be emanating an electromagnetic field. This could be done on a small scale by shielding the single device - or on a larger scale by shielding an entire room - perhaps a server room. T






18. 568B = White/blue - 568A = White/blue - BOGB = White/green






19. 568B = Green - 568A = Orange - BOGB = Green






20. Blue - orange - green and brown.






21. Have an aluminum shield inside the plastic jacket that surrounds the pairs of wires.






22. What is used to identify a wireless network?






23. What is the maximum speed supported by 802.11b?






24. Multi-mode fiber (The Medium) - Half duplex: 400 meters; full duplex: 2 km - Single-mode fiber (The Medium) - Full duplex: 10km






25. Port based network access control (PNAC)






26. What is the most secure encryption used in wireless networks?






27. Gigabit networks. Has different versions that run at 250 MHz and 500 MHz.






28. Tests all of the pins of a connection one by one.






29. The sending of two or more frames of data in a single transmission.






30. To test a cable - what tool would you use?






31. In order to ensure compatibility - the WAP and other wireless devices must all use the same __________.






32. This is the electromagnetic (EM) field that is generated by a network cable or network device - which can be manipulated to eavesdrop on conversations or to steal data.






33. 256-bit encryption level






34. Has eight wires; they are copper conductors that transmit electric signals. These eight wires are grouped into four pairs: blue - orange - green - and brown.






35. What do you call it when electrical signals jump to another set of wires?






36. What is the minimum category of twisted-pair cable you need to support 100 Mbps?






37. A network composed of at least one WAP and at least one computer or handheld device that can connect to the WAP.






38. Which of the following is not a characteristic of 802.11n?






39. 54 Mbps (Data Transfer Rate) and 2.4 GHz Frequency






40. 568B = White/orange - 568A = White/green - BOGB = White/blue






41. You need to connect a twisted-pair cable to the back of a patch panel. What tool should you use?






42. 100 Mbps






43. Occurs when there is similar interference - measured at the cable end farthest from the transmitter.






44. 64-bit encryption level






45. Anything that disrupts or modifies a signal that is traveling along a wire.






46. 568B = White/brown - 568A = White/brown - BOGB = White/brown






47. This is a disturbance that can affect electrical circuits - devices - and cables due to electromagnetic conduction and possibly radiation.






48. The older standard BOGB cable.






49. Occurs when there is measured interference between two pairs in a single cable - measured on the cable end nearest the transmitter.






50. If you are making a crossover cable and one end is 568A - what should the other end be?