4.4 Exercises

  1. A hardware port can have two administrative states—disabled and enabled. Operationally, it has two states—up and down, based on the physical connectivity. If the port is disabled, the operational status is designated down. Devise a simple state machine to demonstrate the administrative and operational status of the port.

  2. Show the SET and Switch–Case implementation for Problem 1.

  3. Outline the steps in PDU preprocessing of an IP packet.

  4. A controller supporting 4 Ethernet ports has been replaced by another controller supporting 8 ports. List the device-independent adaptation layer and device-specific layer functions, for applications to migrate to the new driver in a transparent manner.

  5. The text discusses use of a UNIX-like environment for protocol restarts. Discuss alternate methods.



Designing Embedded Communications Software
Designing Embedded Communications Software
ISBN: 157820125X
EAN: 2147483647
Year: 2003
Pages: 126
Authors: T. Sridhar

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