Homework Answers
the Network Effectiveness Ratio (NER) measures the ability of a network to deliver a call to the called terminal. Busy signals and other call failure due to user behaviour are counted as "successful call delivery" for NER calculation purposes.
NER = 100( Answer calls + user busy + Ring no answer + terminal reject) / total calls
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The user requires that the network meet an effectiveness value of 0.99. (a) What modifications to...
You work in the computer-training department at your company. A new mobile training program is being...
You work in the computer-training department at your company. A new mobile training program is being planned. The plan requires setting up 10 training computers for use in training on a weekly basis. The lab will require a quick setup and tear down for this type of onsite training. The lab must be wired. You can assume all user equipment wil meet the specifications needed to match your choice of network. 1. What version of Ethernet will you use? (2.5)...
In many situations, a user interacts with its computer being part of a distributed network of com...
In many situations, a user interacts with its computer being part of a distributed network of computers. If the users work in such environment where the other users in the system can affect the results of its own actions the analysis requires an adequate HCAI technique. The multi-agent model can become appropriate. See earlier posted paper: Agenit Based Modeling to Inform the Design of Mulriuser Systems, by Yuqing Ren and Robert E. Kraut Task Consider a distributed network of I...
3 30 points) A company is researching the effectiveness of a new website design to decrease...
3 30 points) A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected and their times (in seconds) to access the website with the old and new designs were recorded. The results follow. User Old Website Design New Website Design 30 45 25 32 28 15 20 10 25 20 Let α 0.05. Is the mean time to access the new website design shorter, or...
A variation on a familiar theme: A packet is received correctly by an end user with...
A variation on a familiar theme: A packet is received correctly by an end user with probability p. To increase the likelihood that an important message is received, the packet is sent repeatedly N times. Let random variable X be the number of copies received correctly by the end user. a) Find the PMF PX(x). b) If p = 0.9, how large should N be to ensure that with probability 0.99 at least one copy of the message is received?...
A cosmetic company is interested in testing the effectiveness of a new cream for treating skin...
A cosmetic company is interested in testing the effectiveness of a new cream for treating skin blemishes. It measured the effectiveness of the new cream compared to the leading cream on the market and a placebo. Data below shows the number of blemishes removed after using the cream for 1 week. Assume two-tailed with an α = .05. New Cream Leading Cream Placebo Cream 81 48 18 32 31 49 42 25 33 62 22 19 37 30 24 44...
Top Spin company is considering investing in a roof top solar network to generate its own...
Top Spin company is considering investing in a roof top solar network to generate its own power. Assume that the expected annual cash inflows from new solat network will be 550,000. A SI 50,000 net initial investment is required and the network has five-year useful life and 18% required rate of return. Assume that the investment will occur immediately after management approves the project a. For making decision on whether to approve or reject the project, compute the Net Present...
SuperD Corporation is an electric power company in Hong Kong. In order to meet the rising...
SuperD Corporation is an electric power company in Hong Kong. In order to meet the rising demand for its electricity, the company is considering an investment in a new plant. The new project requires an initial outlay of $33 billion, and it will generate annual after-tax net cash flows of $246 million in perpetuity. As a manager of the Finance Department of the company, you were asked by your supervisor to compute the required return to be used when evaluating...
Top Spin company is considering investing in a roof-top solar network to generate its own power....
Top Spin company is considering investing in a roof-top solar network to generate its own power. Assume that the expected annual cash inflows from new solar network will be $50,000. A $150,000 net initial investment is required and the network has five-year useful life and 18% required rate of return. Assume that the investment will occur immediately after management approves the project. a. For making decision on whether to approve or reject the project, compute the Net Present Value (NPV)...
Question 11 The IP address for the above network is 192.168.151.0/24 (a) What is the total number of networks in the diagram above? (b) Each individual internal network (the networks behind the r...
Question 11 The IP address for the above network is 192.168.151.0/24 (a) What is the total number of networks in the diagram above? (b) Each individual internal network (the networks behind the routers) must support a maximum of 13 User PCs. Can this be done without using VLSM? Why? Write briefly how VLSM can be used in this case to achieve the required conditions? (You do not need to write out the IP addresses for the individual subnets) (c) (3...
(Round all intermediate calculations to at least 4 decimal places.) A television network is deciding whether...
(Round all intermediate calculations to at least 4 decimal places.) A television network is deciding whether or not to give its newest television show a spot during prime viewing time at night. For this to happen, it will have to move one of its most viewed shows to another slot The network conducts a survey asking its viewers which show they would rather watch. The network will keep its current lineup of shows unless the majority of the customers want...
You work in the computer-training department at your company. A new mobile training program is being planned. The plan requires setting up 10 training computers for use in training on a weekly basis. The lab will require a quick setup and tear down for this type of onsite training. The lab must be wired. You can assume all user equipment wil meet the specifications needed to match your choice of network. 1. What version of Ethernet will you use? (2.5)...
In many situations, a user interacts with its computer being part of a distributed network of computers. If the users work in such environment where the other users in the system can affect the results of its own actions the analysis requires an adequate HCAI technique. The multi-agent model can become appropriate. See earlier posted paper: Agenit Based Modeling to Inform the Design of Mulriuser Systems, by Yuqing Ren and Robert E. Kraut Task Consider a distributed network of I...
3 30 points) A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected and their times (in seconds) to access the website with the old and new designs were recorded. The results follow. User Old Website Design New Website Design 30 45 25 32 28 15 20 10 25 20 Let α 0.05. Is the mean time to access the new website design shorter, or...
Top Spin company is considering investing in a roof top solar network to generate its own power. Assume that the expected annual cash inflows from new solat network will be 550,000. A SI 50,000 net initial investment is required and the network has five-year useful life and 18% required rate of return. Assume that the investment will occur immediately after management approves the project a. For making decision on whether to approve or reject the project, compute the Net Present...
Top Spin company is considering investing in a roof-top solar network to generate its own power. Assume that the expected annual cash inflows from new solar network will be $50,000. A $150,000 net initial investment is required and the network has five-year useful life and 18% required rate of return. Assume that the investment will occur immediately after management approves the project. a. For making decision on whether to approve or reject the project, compute the Net Present Value (NPV)...
Question 11 The IP address for the above network is 192.168.151.0/24 (a) What is the total number of networks in the diagram above? (b) Each individual internal network (the networks behind the routers) must support a maximum of 13 User PCs. Can this be done without using VLSM? Why? Write briefly how VLSM can be used in this case to achieve the required conditions? (You do not need to write out the IP addresses for the individual subnets) (c) (3...
(Round all intermediate calculations to at least 4 decimal places.) A television network is deciding whether or not to give its newest television show a spot during prime viewing time at night. For this to happen, it will have to move one of its most viewed shows to another slot The network conducts a survey asking its viewers which show they would rather watch. The network will keep its current lineup of shows unless the majority of the customers want...
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