CIS 3200
Networking Fundamentals

Student Name: _________________________

 
Extra Credit Exercise 1
    
       
Part 1    
Q.1 Servers are computers used by users to get service form the network.
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Q.2 Switches are collection points for wires that interconnect workstations.
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Q.3 A NIC is a device that provides computers with dedicated connections to the network
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Q.4   Traditionally, voice communications use packet switching for data transmission, whereas data communications use circuit switching.
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Q.5 Hubs are collection points for wires that interconnect workstations and
transmit messages out the single port to which the destination station is connected.
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Part 2
 

Do Exercise # 4 on pages 268-269.
 
Note: What is needed is the content of the two bridging tables at the end of the traffic between workstations in the ABC and XYZ local area networks. So, you just need to fill out the two tables below. If needed, additional information about how transparent bridges operate can be found in the course textbook (page 251-252). Note that if a workstation sends twice, there will only be one entry (and not two entries) in the bridging table for that workstation.
 
Port ABC Table








 
Port XYZ Table








 

Part 3
 
Consider the network configuration shown below

LAN image
 

Suppose that the bridge was installed a long time ago and, therefore, the bridging tables contain references about all computers in LAN A and LAN B. Now, suppose that Workstation 1 sends to Workstation 2. What will happen? (Circle all correct answers)

a) The hub will send a copy of the message to the bridge
b) The bridge will forward the message to the switch
c) The switch will discard the received message
d) The bridge will check its Port A bridging table and will discard the received message.