Revision: Three Layer Architecture

Submitted by BinksUK on Sat, 07/08/2006 - 17:24

Explain the functions of each layer of a three tier architecture.
Compare the advantages and disadvantages of a three tier architecture with that of a two tier architecture.

Revision: Client and Server

Submitted by BinksUK on Sat, 07/08/2006 - 17:23

Short answer questions:

Revision: Code

Submitted by BinksUK on Sat, 07/08/2006 - 17:22

Briefly discuss each line of code below. What is the overall purpose of this code

Socket ss = new Socket(â€œarcher.open.ac.ukâ€, 2048);
InputStream is = ss.getInputStream();
BufferedReader bf = new BufferedReader(new InputStreamReader(is));

Revision: Ports and Sockets

Submitted by BinksUK on Sat, 07/08/2006 - 17:22

Explain the difference between 'ports' and 'sockets'?

In this context, what is meant by a port conflict?

Explain the difference between a socket and a java socket class.

Revision: Naming Service

Submitted by BinksUK on Sat, 07/08/2006 - 17:21

In the context of a distributed system what is a naming service?

Why are such services an important component of a distributed application?

Explain the relationship between an IP address, dotted quad, and a naming service.

Revision: Chapter 1 - OSI

Submitted by BinksUK on Sat, 07/08/2006 - 17:20

Explain the function of each layer of the OSI reference when running a web browser on the Internet.

Revision: Chapter 1 - Internet Topology

Submitted by BinksUK on Sat, 07/08/2006 - 17:18

Explain why the network topology for an office network often differs from the topology used by the Internet. You should outline the commonest topology for each and should give three advantages and three disadvantages for each topology.

note this is background information - you are studying how applications run over the Internet, so some knowledge of how the Internet works is expected.

A Mistake

Submitted by BinksUK on Tue, 06/27/2006 - 03:07

I made the stupid mistake of looking at the calendar yesterday Less than four weeks of the term left and too much to do.

We've got the ShowOff today (yes, I know I'd said I wouldn't do another but I have no choice the band is scarce as it is), which means this early start and a late finish, not what I need at the moment.

That's Better

Submitted by BinksUK on Thu, 06/22/2006 - 06:15

I've gone from a week of getting nothing done to a week of productivity. Much better.

The Fault Logger is ready to be packed up and shipped out for a proper major release, just one bug to sort and an invoice to write.

The Shout has been begun, and when I've looked into it properly we actually have a fair bit of stuff. It may not be ready for new intake but it should make a good end of term edition.

eh?

Submitted by BinksUK on Sun, 06/18/2006 - 15:33

All of a sudden I've found myself two weeks down on the term and not really any further along in my list of jobs, how does that work?

Certificate lists are pretty much done, but not printed, the memo not approved, and the lists not live yet. The shout is, well, empty with material still proving illusive. The fault logger is pretty much in the same position it was the other week, ideas have been formed but none implemented. The website is figured out but nothing further done. The tma is yet to be started with less than two weeks to go.

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