Nt1330 Unit 3 Assignment 1 Paper

Problem 3.2

For each set of application performance requirements shown in Figure 3.33, classify the network as single-tier or multi-tier performance. Please explain your choice for each.

PERFORMANCE REQUIREMENTS
APPLICATION SET
Capacity
Reliability
Delay
Application Set 1

Application 1 150 Kb/s
99.95%
100 ms
Application 2 100 Kb/s
99.95%
100 ms
Application 3 100 Kb/s
99.95%
100 ms
Application 4
120 Kb/s
99.95%
100 ms

Application Set 2

Application 1 75 Kb/s
99.999%
40 ms
Application 2 150 Kb/s
99.95%
100 ms
Application 3 250 Kb/s
99.999%
40 ms
Application 4 200 Kb/s
99.95%
100 ms

Application Set 3

Application 1 1.1 Mb/s
99.95%
40 ms
Application 2 800 Kb/s
99.95%
100 ms
Application 3 950 Kb/s
99.95%
100 ms
Application 4 120 Kb/s
99.95%
20 ms
Application 5
120 Kb/s
99.999%
50 ms

Figure 3.33 Application Performance Requirements for Exercise 3.2
As seen from the table, the reliability and delay is the same for all four applications and the capacity of each of them does not differ from each other a lot with the values ranging from 100 Kb/s to 150 Kb/s. Hence all applications could use a single tier network.

Application Set 2:

This application set could be classified under a multi network. The applications 1 and 3 have one set of reliability and delay requirements while applications 2 and 4 have another set. The capacity of applications 1 and 3 vary quite a lot hence it has to be configured under different tiers. Application 2 and can be configured in one.

Application Set 3

The application Set 3 requires a multi-tier network as the requirements vary a lot from one application to another. Application 1 could be classified in one tier and applications 2 and 3 in one as their requirement is quite similar. Applications 4 and application 5 can be a part of 2 more tiers.

Problem