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Chapter Review

  1. Which of the following devices are you most likely to use to connect a LAN to the Internet?
    1. A hub
    2. A bridge
    3. A switch
    4. A router
  2. Which of the following devices does not read the data-link layer protocol header in incoming packets?
    1. A hub
    2. A bridge
    3. A switch
    4. A router
  3. Suppose that you have a 10 Mbps Ethernet LAN that consists of 45 computers connected to three standard repeating hubs. Traffic levels are getting too high, causing excessive collisions and reduced performance. Which of the following courses of action is the most inexpensive way to reduce the overall traffic level on the network?
    1. Split the network into three LANs and connect them using dedicated hardware routers.
    2. Replace the three hubs with switches.
    3. Connect the three hubs to a high-performance switch, instead of to each other.
    4. Install a transparent bridge between two of the hubs.
  4. Using the same scenario as in question 3, which of the following courses of action would not increase the bandwidth available to each workstation?
    1. Split the network into three LANs and connect them using dedicated hardware routers.
    2. Replace the three hubs with switches.
    3. Connect the three hubs to a high-performance switch, instead of to each other.
    4. Upgrade the network to 100 Mbps by installing Fast Ethernet NICs and hubs.
  5. The spanning tree algorithm is used to prevent which of the following networking problems?
    1. Excessive collisions
    2. Packet filtering
    3. Bridge loops
    4. Static routing
  6. Source route bridging is associated with which of the following protocols?
    1. Ethernet
    2. Token Ring
    3. FDDI
    4. TCP/IP
  7. On a switched network, virtual LANs are used to create multiples of what?
    1. Collision domains
    2. Broadcast domains
    3. Internetworks
    4. All of the above
  8. ICS enables a computer running Windows to function as what?
    1. A hub
    2. A bridge
    3. A switch
    4. A router
  9. Which of the following processes requires manual intervention from a network administrator?
    1. Transparent bridging
    2. Source route bridging
    3. Static routing
    4. Dynamic routing
  10. Which of the following devices does not have buffers to store data during processing?
    1. A repeating hub
    2. A local bridge
    3. A cut-through switch
    4. All of the above