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What is a critical region? How do they relate to controlling access to shared resources?
Date posted:
April 26, 2022
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What is a race condition? Give an example
Date posted:
April 26, 2022
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Context switching between two threads of execution within the operating system is
usually performed by a small assembly language function. In general terms, what does this
small function do internally?
Date posted:
April 26, 2022
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Enumerate the advantages and disadvantages of supporting multi-threaded applications
with kernel-level threads
Date posted:
April 26, 2022
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Why are user-level threads packages generally cooperatively scheduled?
Date posted:
April 26, 2022
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Name some advantages and disadvantages of user-level threads
Date posted:
April 26, 2022
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Describe how a multi-threaded application can be supported by a user-level threads package. It may be helpful to consider (and draw) the components of such a package, and the function they perform
Date posted:
April 26, 2022
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What is a process? What are attributes of a process?
Date posted:
April 26, 2022
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Multi-programming (or multi-tasking) enables more than a single process to apparently execute simultaneously. How is this achieved on a uniprocoessor?
Date posted:
April 25, 2022
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Describe the three state process model, describe what transitions are valid between the
three states, and describe an event that might cause such a transition
Date posted:
April 25, 2022
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Is putting security checks in the C library a good or a bad idea? Why?
Date posted:
April 25, 2022
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Why must the operating system be more careful when accessing input to a system call (or
producing the result) when the data is in memory instead of registers?
Date posted:
April 25, 2022
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Aruna Ltd. is evaluating an investment project which requires the importation of a new machine at a cost of sh. 2,700,000. The machine has a useful life of six years.
Date posted:
April 25, 2022
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Describe the two general roles of an operating system, and elaborate why these roles are
important
Date posted:
April 25, 2022
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Briefly explain three types of real options available in capital investments decisions.
Date posted:
April 25, 2022
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High Tec Electronics Ltd is considering the acquisition a new machine to replace existing machine
currently being used in the production of product “Q”.
The existing machine was acquired 5 years\ ago at a cost of Sh.40; 000,000.The machine was
originally estimated to have a useful life of 10 years with a nil salvage value at the end of its useful
life. However, following a revaluation of the machine, it is now estimated that the machine can be
used for another 15 years with a salvage value of sh.5,000,000.The current disposal value of the
machine is sh.30,000,000.
The new machine is estimated to cost sh.100, 000,000.The Company will incur an installation cost of
sh.20, 000, 000.However, the machine will require an overhaul at the end of 10 years.
The overhaul will involve the acquisition of new parts and will cost sh.20; 000,000.The new machine
is expected to have a useful life of 15 years and a salvage value of sh.30, 000,000 at the end of its
useful life. Investing in the new machine will also require an additional investment in working capital
of sh.40, 000,000 at the end of 5 years. The investment in working capital will however be recovered
at the end of the machine’s useful life.
The following information relates to the new machine and the existing machine’s expected output of
product “Q” over the 15 years period.
Additional information
1. The unit selling price and unit variable cost of product “Q” are sh.25 and sh.15 respectively.
These are expected to remain constant over the 15 years period.
2. The annual fixed costs excluding depreciation associated with the new machine are expected to
increase by sh.100,000,000 over the 15 years period.
3. The company applies a policy of straight line depreciation for all its fixed assets.
4. The overhaul cost of the new machine will be amortized separately over the remaining useful
life of the machine on straight line basis.
5. The company’s cost of capital is 20%.
6. Corporation tax rate is 30%.
Assume all cash flows, unless otherwise stated occur the end of each year.
Required;
Using the net present value (NPV) technique, advice the company on whether it should replace the existing machine with the new machine.
Date posted:
April 25, 2022
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Describe the physical and chemical effects of heating on fats and oils
Date posted:
April 25, 2022
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Effects of cooking fruits and vegetables
Date posted:
April 25, 2022
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Mavoko Ltd. manufactures a component known as “Fixit” which is used in the manufacture of locally assembled desktop computers. While the current production capacity is one million units of “Fixit”, demand for the component is expected to be as follows:
The company is planning to acquire an additional machine at a cost of sh. 8,000,000 which will have a
useful life of 4 years and a maximum output of 600,000 units. The scrap value of the machine after
four years will be sh. 300,000.
The current selling price of “Fixt” is sh. 80 per unit and the variable cost is sh. 50 per unit. Other
variable costs of production are sh. 19. Fixed costs of production associated with the new machine
would be sh. 2,400,000 in the first year of production increasing by sh. 200,000 per year in each
subsequent year of operation.
Mavoko Ltd. pays tax one year in arrears at an annual rate of 30% and can claim capital allowance on
a 25% reducing balance basis. A balancing allowance is claimed in the final year of operation.
The cost of equity for mavoko Ltd. is 10% while it pays an interest of 8.6% on its debts. Its long term
fiancé is made up 80% equity and 20% debt.
Required:
i) Calculate the net present value (NPV) of buying the new machine.
ii) Calculate the internal rate of return (IRR) of the new machine.
iii) Advise the management of Mavoko Ltd. on whether to buy the new machine.
Date posted:
April 25, 2022
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Discuss three major enzymes found in fruits and vegetables
Date posted:
April 25, 2022
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Describe the chemical composition of fruits and vegetables
Date posted:
April 25, 2022
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Explain five methods of cooking meat
Date posted:
April 25, 2022
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Three options are available to the investment manager of Maendeleo Ltd. as follows:
− Project Weka may yield a return of Sh.20 million with a probability of 0.3, or a return of Sh.40 million with a probability of 0.7.
− Project Leta may earn a return of Sh.20 million with a probability of 0.3 or a return of Sh.55 million with a probability of 0.7
− Project Pato yields a return of Sh.30 million with a probability of 0.5 or Sh.40 million with a probability of 0.5
Required:
By applying the mean-variance rule, advise Maendeleo Ltd investment manager on the best investment option.
Date posted:
April 25, 2022
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Briefly describe the mean-variance rule.
Date posted:
April 25, 2022
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Lang Ltd is interested in measuring its overall cost of capital and has gathered the following data for the year 2011:
Debt: The firm can raise an unlimited amount of debt by selling Sh. 1,000 per value 8% coupon rate, 20 year bonds on which annual interest payments will be made. To sell the issue, an average discount of Sh. 30 per bond would be given
Preference stock: The firm can sell 8% preferred stock at its Sh. 95 share per value. The cost of issuing and selling the stock is expected to be Sh. 5 per share. An unlimited amount of preferred stock can be sold under these terms.
Debt: The firm can raise all unlimited amount of debt by selling Sh. 1,000 per value 8% coupon rate, 20 year bonds on which annual interest payments will be made. To sell the issue, an average discount of Sh. 30 per bond would be given
Equity: The firm expects to have Sh. 100,000 of retained earnings in the coming year 2012. New shares can be issued at Sh 62 each with a flotation cost of Sh 2 per share. The growth rate is expected to be 6%. Expected dividend in the coming
year is Sh. 6.
The company’s estimate optimal capital structure is given below.
The company tax is at 30%
Required
(i) Compute the specific cost of each source of financing
(ii) Determine the breakpoint and the weighted average marginal cost of capital below the
breakpoint.
Date posted:
April 25, 2022
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Factors influencing rigor mortis
Date posted:
April 25, 2022
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Describe the process of rigor mortis
Date posted:
April 25, 2022
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Tezo Ltd. is in the process of modernizing its operations. The factory manager has proposed the
replacement of the milling machine with a new fully computerized machine. The milling machine
was purchased two years ago at a cost of Sh.4 million. The economic life of the machine was five
years. However, a management review has established that the machine has a further useful life of
five years with a zero salvage value. The machine could be disposed of immediately at Sh. 1.6 million.
The new machine has a purchase price of Sh.8 million with an additional installation cost of Sh.
1.8 million and a salvage value of Sh.2 million. The new machine will lead to increased efficiency
and annual savings in costs of Sh.2.1 million. However, electricity costs will increase by Sh.200,
000 per annum. The operation of the new machine will also require an increase of Sh.810, 000
worth of raw materials. The company uses the straight line method of depreciation. The
company's cost of capital is 10% and the corporate tax rate is 30%.
Required:
Advise the management of Tezo Ltd. on whether to replace the machine.
Date posted:
April 25, 2022
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ABC Ltd. has the following proposed independent projects for the year ending 31 December 2012:
Required:
(i) Assuming that there is no capital rationing, indicate which projects should be selected.
(ii) Total net present value (NPV) of the selected projects.
(iii) Assuming a single period internal capital constraint of Sh. 1,700,000 is imposed, indicate which projects should be selected.
Date posted:
April 25, 2022
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Describe the process of egg spoilage
Date posted:
April 25, 2022