What is the task of an Ethernet switch?, writing homework help

Attached is the book, read and answer these question in own word simple answers

each question followed by page number that has the answer

3.3 What is the task of an Ethernet switch? What tables does it maintain? pages 105, 130

3.6 Can we be sure that no two computers in the Internet have the same IP address?

page 108

4.9 Why is there no explicit data typing in CORBA CDR? page 160

4.18 Revisit the Internet architecture as introduced in Chapter 3 (see Figures 3.12 and 3.14). What impact does the introduction of overlay networks have on this architecture, and in particular on the programmer’s conceptual view of the Internet? page 175

5.11 An
Election interface provides two remote methods:
vote: This method has two parameters through which the client supplies the name of a candidate (a string) and the ‘voter’s number’ (an integer used to ensure each user votes once only). The voter’s numbers are allocated sparsely from the range of integers to make them hard to guess.
result: This method has two parameters through which the server supplies the client with the name of a candidate and the number of votes for that candidate. Which of the parameters of these two procedures are
input and which are
output parameters?
page 195

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