Computer Networks Answers

Department Number of Users

Customer Care 10

Sales and Marketing 20

Finance 25

Legal 5

HR 10

Developers 55

Network Team 5

Server Room

Servers +ISP connections

· High level of redundancy is expected in network design to eliminate single point of failures and traffic bottle necks.

· Sales and Marketing Team need to access Network resources using WIFI connectivity.

· Proper methods for networking monitoring and troubleshooting need to be established.

· All possible network security mechanisms should be implemented.

Recommend suitable network topologies and network protocol suites for above scenario and justify your answer with valid points.

List down the difference among class A,Class B and class C subnet mask?

Cite a situation in which you can apply the knowledge about configuring a static address

List down the difference between configuring static address and dynamic address.

Identify any two tasks that can be performed on computer network give

Task description

Required network application/ software

Benefits

Concerns and / or risks of each task

List down the difference between configuring static address and dynamic address?

4 Consider a system with 14 dedicated devices of the same type. All jobs currently running on this system require a maximum of five devices to complete their execution but they each run for long periods of time with just three devices and request the remaining two only at the very end of the run. Assume that the job stream is endless and that your operating system’s device allocation policy is a very conservative one: No job will be started unless all the required drives have been allocated to it for the entire duration of its run. a. What is the maximum number of jobs that can be active at once? b. What are the minimum and maximum number of devices that may be idle because of this policy? Under what circumstances would an additional job be started?

A campus wireless installation project costs GH¢ 36,000 and is expected to generate cash inflows of 11,200 annually for five years. Calculate the IRR.

 Your company has been presented with a new proposal to develop a new school management system. The cost of the project development is $500,000. The probability of successful development is projected to be 70%. If the development is unsuccessful, the project will be terminated. If it is successful, the developer must then decide whether to begin developing a completely new school management system or modify an existing school management system. If the demand for the new school management system is high, the incremental revenue for the school management system is $1,200,000, and the incremental revenue for the modified school management system is $850,000. If the demand is low, the incremental revenue for the new school management system is $700,000, and the incremental revenue for the modified school management system is $720,000.

Supply of laptops to a customer and maintenance agreement of three years costs GH¢ 16,000.  The annual cash flows are: 8,000, 7,000 and 6,000. If , what is the IRR (). 

You are the IT Project Manager of a company and there are two projects being considered for selection. Project-I: Developing a website is being considered against Project-II: Developing a Library software. The initial project costs and other details are given below:

Project-I: , , CF: 5,000, 10,000, 10,000, 3,000, 2,000, Salvage Value=1,000,

Project-II: , , CF: 20,000, 10,000, 5,000, 3,000, 2,000, Salvage Value=2,000,

Using the NPV, which project should be selected and why?