Computer Networks Answers

The motorway management perceives that the waiting time computed in (a) above is not acceptable and it wishes to reduce it, first, by adding an extra tollbooth assistant to help improve the service rate to 250 motorists every 8-hour-day. The tollbooth attendant will be paid a monthly salary of GH¢400. The second option is that management can add a toll-operated machine which will cost GH¢3,000 and this amount is a free gift from the Minister. This option will reduce the arrival rate to 35 motorists every 2 hours. However, management will have to pay the operator who will man the toll-operated machine a monthly salary of GH¢550. Whichever option management adopts; they avoid lost sales of GH¢1,200.00 per month for every minute that average waiting time is reduced. Advise management which option it must adopt?

Discuss, in detail, reasons why an operating system is considered as

a resource manager; and explain how it manages the various

resources in the context of computer-based information systems

in use at a financial institution

A technician is setting up a new wireless network at a branch office that previously had only wired

connectivity with statically assigned IP addresses. After setting up the network, the technician 

configures a server to provide IP addresses to wireless clients. During testing, the technician is 

unable to access the Internet or named network resources. The technician receives a valid IP 

address from the DHCP server and can ping the default gateway.

Explain various steps that can be taken to resolve this issue. (each step highlighted MUST be 

accompanied by the intended solution the step hopes to achieve)

how computer networks is beneficial in your field of study

Draw an ER diagram for a university library information system which stores

information about books, journals, publishers, students, staff, borrowing of books,

and reservation of books. Note that the library may have more than one copy for

some of the books. You must show the entities, relationships and attributes along

with the cardinality constraints and proper symbols.

Choose ONE of the below security topics from chapter 22 of the Dordal (2019) course text. Research the topic, then provide a summary of the technology and how it works. Please use one additional outside source from the Internet to support your findings.

1. Network Intrusion Detection
2. Secure Shell (SSH)
3. Transport Layer Security (TLS)
4. Public Key Encryption

Note any areas where you may want or need some further explanation. Ask questions of your fellow classmates.

Scenario

In computer networking two versions of IP address are used i.e., IPv4 and IPv6. What is your point of view, will IPv6 totally replace IPv4 or IPv4 will co-exist with IPv6? Justify your opinion with two solid reasons.

Note: Format of your answer should be as follow:

Your Opinion (Yes/No):

 Reason 1:

 Reason 2:

Perform the subnetting on the below IP Address and find out the number of networks, network of, first host, last host, and broadcast id of each network.          (10 Marks)                                                                                

                        IP Address: 210.220.150.0/28   

Discuss three responsibilities that an operating system has for file management in a computer system.