Which of the following media access methods is utilized in 802.11b wireless networks?
❍ A. CDMA/CD
❍ B. CDMA/CA
❍ C. Token passing
❍ D. Radio waves
Answer B is correct. 802.11b-based networks use the Collision Detection Multiple Access/Collision Avoidance (CDMA/CA) media access method.
Which of the following statements associated with bus topology networks are correct? Select two answers.
❑ A. These networks are prone to EMI and RFI.
❑ B. A break in cable can bring down the network.
❑ C. It is wired in a dual ring physical layout.
❑ D. A central device is connected to all computers.
❑ E. A single cable is used to connect all computers.
Answers B and E are correct. Bus networks use a single cable to connect all computers. A break in cable can bring down the entire network segment.
You have been asked to install a small network consisting of eight computers. Your manager wants the best possible fault tolerance. Which of the following topologies would you choose?
❍ A. Bus
❍ B. Star
❍ C. Ring
❍ D. Mesh
Answer D is correct. The mesh topology provides the best fault tolerance. Every computer in a mesh network is connected to every other computer, thus providing multiple redundant paths.
Which of the following networks can be easily expanded without interrupting the other network devices and users? Select two answers.
❑ A. Bus
❑ B. Ring
❑ C. Star
❑ D. Mesh
Answers C and D are correct. Star and mesh networks can be expanded without affecting the current network devices or the users. ...