CNE250 Networking Technologies

Review for First Quiz

 

1. What term describes the sharing of information and services?
   
   
2. In which computer model does the mainframe provide all data storage and computational abilities while the terminal is a remote input/output device?
   
   
3. Which computer model uses two or more computers to accomplish the same processing task?
   
   
4. What term refers to a WAN that connects all the LANs in a single organization?
   
   
5. What three elements are required for all networks?
   
   
6. What do you call an entity that is only allowed to provide services?
   
   
7. What do you call an entity that is only allowed to request services?
   
   
8. What do you call an entity that may provide and request services concurrently?
   
   
9. What do you call the rules required to help entities communicate or understand each other?
   
   
10. Name five common network services.
    
    
11. What network applications store, retrieve, or move data files and perform read, write, access control, and data management functions?
    
    
12. Which storage media is not immediately available to the computer and does not require human intervention (e.g. tape carousel or CD-ROM jukebox)?
    
    
13. When you create duplicate copies of data on offline storage media to act as a safeguard in the event of emergency, you are creating a ________.
    
    
14. What is an efficient way to complete multiple print requests by holding, prioritizing, and managing the print jobs?
    
    
15. What service maintains and updates directories to identify current addresses of any computer or entity?
    
    
16. What do the benefits of scalability and growth depend on?
    
    
17. What is the division of data across various computer services while affecting seamless data sharing?
    
    
18. What do you call the creation and synchronization of multiple copies of data over the network to improve speed?
    
    
19. Name five media characteristics that should be considered when deciding which type of transmission media to use.
    
    
20. What term do you use to describe the tendency of electromagnetic waves to weaken or distort during transmission?
    
    
21. What term do you use when undesirable electromagnetic waves affect the desired signal?
    
    
22. Name four types of cable media.
    
    
23. Describe UTP in terms of cost, ease of installation, capacity, attenuation, and immunity from EMI.
    
    
24. List five coaxial cable standards (including resistance ratings), and state the transmission applications in which each is used.
    
    
25. Describe fiber optic in terms of cost, ease of installation, capacity, attenuation, and immunity from EMI.
    
    
26. Name three kinds of wireless media.
    
    
27. Name three classes of Radio Frequency transmissions used in Networking.
    
    
28. What is the difference between a network and an internetwork?
    
    
29. Name six kinds of transmission media connectors.
    
    
30. What connectivity device is the physical and logical connection between a computer and a transmission medium?
    
    
31. What device is used to convert signals from one type of connector to another?
    
    
32. What is the function of a modem?
    
    
33. Define repeater, and indicate why signal-regenerating repeaters are preferred.
    
    
34. What is a device that connects media segments but does not perform signal regeneration?
    
    
35. What is a device that connects network segments and selectively passes signals from one media segment to another?
    
    
36. What is a device that allows efficient use of transmission media bandwidth by combining signals on a single segment?
    
    
37. What is a device that connects at least two logically separate networks?
    
    
38. What do you call a router that can bridge?
    
    
39. What is the term for standard communication rules used to create computer network products?
    
    
40. List the seven layers in the OSI model and a mnemonic sentence for them.
    
    
41. How do layers communicate within a stack?
    
    
42. What are the seven layers of the ISO-OSI Network model?
    
    
43. Identify three categories of hardware usually associated with the physical layer.
    
    
44. What term is used to describe the physical structure of the transmission media?
    
    
45. Which network structure attaches each device to a single cable (backbone) by cable taps or T-connectors, terminating at each end to remove the signal from the wire?
    
    
46. Describe a bus topology LAN in terms of ease of installation, ease of reconfiguration, ease of troubleshooting, and units affected by media failure
    
    
47. What is the name for a circular topology wherein devices unidirectionally pass signals to one another?
    
    
48. Describe physical ring topology in terms of ease of installation, ease of reconfiguration, ease of troubleshooting, and units affected by media failure.
    
    
49. In which topology are devices connected by a point-to-point link to a hub, multiport repeater, or concentrator?
    
    
50. Which topology redundantly connects all devices point-to-point?
    
    
51. Which topology divides a geographic area into cells via a combination of wireless point-to-point and multipoint strategies?
    
    
52. What term describes a communication method that uses electrical energy?
    
    
53. Explain how current-state-encoding strategies work.
    
    
54. Explain how state-transition encoding strategies work.
    
    
55. What are three characteristics used to measure analog waves?
    
    
56. A wave's signal strength as compared to some referenced value determines the _______.
    
    
57. What term describes the time it takes a wave to complete one cycle in Hertz (cycles per second)?
    
    
58. What term describes the relative state of a wave when timing began, expressed in degrees?
    
    
59. Asynchronous and Synchronous are two types of ___________.
    
    
60. What are three techniques used in clocking synchronous transmission?
    
    
61. Identify the two major types of bandwidth use.
    
    
62. What are three multiplexing techniques?