Wired and Wireless Local Area Networks (True or False)

Wired and Wireless Local Area Networks True-False Questions The following are possible True/False questions for tests. The statement is given and the answer provided. The level of difficulty (easy, medium, hard), the reference section relevant to the topic, and learning objective are also furnished. 1. An access point plays the same role in a wireless network as a router does in a wired Ethernet network. False 2. STP cable is least costly type of cable used in today’s networks and is the most commonly used cable type in connecting computers to switches. False 3. The term “domain controller” is a name commonly used to refer to a Microsoft directory services server. True 4. The Network Interface Card (NIC) permits a computer to be physically connected to a network’s cable. True 5. LANs that run on radio frequencies use a type of wired media. False 6. Fiber optic cable is thicker and heavier than unshielded twisted pair. False 7. Many network hubs and switches incorporate repeaters to regenerate signals so that attenuation of the signal does not occur. True 8. The NOS software for the server computer provides the physical, data link, and network layer functions. False 9. One of the most important functions of Network Operating System (NOS) is a directory service. True 10. LDAP is an industry standard directory protocol. True 11. A hardware device that is not included in a network profile cannot be accessed by another computer on the network. True 12. Network profile refers to what resources on each server are available on the network for use by other computers and which devices or people are allowed access on the network. True 13. Hub-based Ethernet is a star physical topology and a bus logical topology. True 14. Ethernet is a layer 3 protocol, which operates at the network layer. False 15. The Ethernet standard was first developed by the IEEE. False 16. Physical topology refers to the geometric layout of the network and describes how the computers are interconnected. True 17. A collision on a bus circuit means that two computers on that circuit have transmitted at the same time. True 18. The three latest versions of Ethernet run at speeds of 1Gbps, 10Gbps, and 50 Gbps. False 19. 1000Base-LX is a version of 1000Base-T than runs on four pairs of CAT 5 cable. False 20. A switch always broadcasts all the packets it receives to all the computers that are connected to the switch. False 21. A forwarding table tells a switch which port it should send out a packet to get to the destination computer. True 22. When a switch receives an Ethernet frame with a destination address that is not in its forwarding table, the switch will broadcast the frame out all of its other ports. True 23. Cut-through switching has fewer errors than store and forward switching. False 24. Store and forward switching may only be used when the incoming and outgoing data circuit have the same data rate. False 25. A switch can send and receive on all circuits simultaneously. True 26. Wireless LANs are never connected to a wired network. False 27. An access point (AP) is required to connect a WLAN to a wired network. True 28. An access point ensures that all computers within range of the access point can communicate with each other, True 29. Most access points (AP) deployed in wireless LANs use directional antennas. False 30. Directional antennas signals are much stronger than omnidirectional antennas. True 31. Wireless LANs use Carrier Sense Multiple Access with Collision Detection (CSMA/CD) for medic access control. False 32. Distributed Coordination Function is a media access control method used in wireless LANs where the sender waits for an ACK (acknowledgement) from the receiver before transmitting any more packets. True 33. Point Coordination Function requires that each station that wishes to transmit on the wireless network sends a request-to-transmit (RTS) packet to the access point and waits for a clear-to-send (CTS) packet from the AP before it can communicate with other nodes on the network. True 34. The DCF function of Wi-Fi resolves the hidden node problem. False 35. The frequency ranges of some access points are the same as some cordless telephones. True 36. An 802.11g NIC can communicate with an 802.11n access point operating in mixed True 37. The data link layer protocols used by wireless LANs are similar to the ones used on Ethernet LANs True 38. Wireless LANs do not share the bandwidth capacity of the wireless network. False 39. A site survey is not an important component of a WLAN design. False 40. Wired Equivalent Privacy requires that each user have a preconfigured key in order to communicate with an access point. True 41. Wi-Fi Protected Access (WPA) uses the same key for every packet that is transmitted to the client. False L.O.: Be able to design wireless Ethernet LANs 42. Directional antennas produce a stronger signal over longer distances than omnidirectional antennas. True 43. Category 1 cable is an old standard that is no longer in use. False 44. Category 2 cable is standard voice-grade twisted-pair wires. False 45. Category 2 and category 4 cable are old standards no longer in use today. True 46. Category 7 cable has less range than the other types of cable. False 47. The maximum range of a Category 6 cable is 100 meters. False 48. Category 8 have a maximum range of 15 meters, which means they are typically used between networking devices that are near each other (e.g., in a rack or data center). False 49. The maximum range of Category 7 cables is 15 meters. True 50. Hub-based Ethernet is seldom used by companies today. True 51. Almost all corporate installations of Ethernet today use hubs rather than switches. False 52. Fiber optic cable is thinner than unshielded twisted pair cable. True 53. Fiber optic cable is lighter than unshielded twisted pair cable. True 54. Fiber optic cable has a very low capacity. False 55. Fiber optic cable is more expensive than CAT5 unshielded twisted pair cable. True 56. Fiber optic cable is the least expensive cable option. False 57. Fiber optic cable is a type of guided media. True 58. A hub in a network can be used to act as a communications server. False 59. A hub in a network can be used to connect network cables. True 60. A hub in a network can be used to prevent attenuation. True 61. A hub in a network can be used to act as a junction box. True 62. With layer-2 switched Ethernet, a switch replaces the hub. True 63. With layer-2 switched Ethernet, the physical topology is the same as the physical topology of shared Ethernet: a ring. False 64. With layer-2 switched Ethernet, the logical topology is a star. True 65. With layer-2 switched Ethernet, the switch uses a forwarding table to switch the frame to the correct circuit/computer. True 66. With layer-2 switched Ethernet, the switch chooses which frame to transmit first if it receives more than one frame destined for the same computer at the same time, and stores the other frame(s) temporarily. True 67. With switched Ethernet, the switch has a physical bus topology. False 68. With switched Ethernet, it uses a switch instead of a hub. True 69. With switched Ethernet, most switches support full duplex circuits. True 70. With switched Ethernet, it essentially provides a point-to-point connection between True 71. With switched Ethernet, it has forwarding tables in which entries are learned over time. True Medium Wired Ethernet Understand the major components of LANs