Take Home Quiz 07

Due:

  1. The LLC standard specifies three forms of service to LLC users. List them.
  2. Refer to Table 6.1 (page 147), and list the service primitives common to each form of service.
  3. List the service primitives used to establish a connection.
  4. For each of the service primitives sequences of Figures 6.1 (page 147), show the exchange of LLC PDUs that implements the corresponding service
  5. A LAN has a data rate of 4 Mbps and a propagation delay between two stations at opposite ends of 20 s (micro seconds). For what range of PDU sizes does stop-and-wait give an efficiency of at least 33.33%.
  6. What parameters are essential for each of the LLC primitives in Table 6.1 (page 147)?
  7. Study Figure 6.2 (LLC Protocol Data Unit Formats, page 151), and relate the I/G. C/R, and P/F bits. [Hint: Complete the following table.]
I/G C/R P/F Notes
0 0 0 Individual DSAP, Command, Pull
0 0 1 Individual DSAP, Command, Pull. force a response
0 1 0  
0 1 1  
1 0 0  
1 0 1  
1 1 0  
1 1 1  

Due: E-mail by, Monday April 19, 2004 at 9:00 PM

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E-Mail: alnajjar@ccse.kfupm.edu.sa


Page last edited: 2004-04-15 at 04:55 PM

2002-2004. Dr. Atef Jawad Al-Najjar