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If all firms, existing and potential new entrants, face decreasing industry costs in the long run under perfect competition, the industry supply curve will: Necessarily be upward sloping Slope downwards if there are external diseconomies of scale Slope upwards if there are internal economies of scale Only be horizontal if there are constant external costs with respect to industry size Slope downwards if there are external economies of scale Solution External economies of scale imply the lowering of costs in the long run due to external factors. Perfect competition always charges the price equal to its marginal costs, thus, since the marginal costs are falling due to external economies of scale, the supply curve will be downward sloping. Hence, the correct option is (e) Slope downwards if there are external economies of scale . .

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Identify which of the following is NOT a TCP/IP Attack: Question 5 options: a) SQL Injection b) Source Routing Attack c) IP Spoofing Attack d) SYN Flood Attack The software-based access control that identifies data items that require different types of protection is: Question 8 options: a) encryption b) need to know c) internal security labeling d) integrity checking A point of presence system that analyzes network traffic to detect leaking data is: Question 19 options: a) a data loss prevention system b) an intrusion detection system c) an intrusion prevention system d) a DMZ Solution 5) a) SQL Injection 8) c) internal security labeling 19) a) a data loss prevention system .

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Identifying Matter: Physical Properties (Section 1.4 15. The elements sulfur and bromine are shown in the photograph. Based on the photograph, describe as many proper tiles of each sample as you can. Are any properties the samme? Which properties are different? Sulfur and bromine. The sulfur is on the flat dish; the bromine is in a closed flask. ou see a crystal of the min- Solution Physical form - Sulfur is in solid form whereas Bromine is a mixture of liquid and vapour form. No similarity is present. This property is completely different Color - Sulfur is light yellow color whereas Bromine liquid and vapour both has dark orangish color. No similarity is present. This property is completely different. Volatility - sulphur is not volatile and kept open in the atmosphere whereas bromine liquid is volatile and kept in a closed flask otherwise all Bromine liquid will convert to Bromine vapour and this vapour will dissipate in atmosphere. No similarity is present. This property is completely different. .

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Identifying aclds and bases by their reaction with water Kri Some chemical compounds are listed in the first column of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. The important chemical species that would be present in this solution are written in the second column of the table. Use the checkboxes to classify each compound. type of compound (check all that apply) important species present when dissolved in water compound strong weak strong weak acid acid basebase ionic mol KCI K CI, H,0 NH, HNO ?? NH OH NH, H20 H,o\'. C,H,0 Solution The species that give off their H+ readily are strong acids and those who dissociate partially are called weak acids. The species that give off OH- ions readily are strong bases and those who dissociate partially are weak bases. The ionic compounds have ionic bonds between the ions , whereas molecular compounds do not. So here : KCl = ionc , NH3 = molecular , weak base HNO2 = molecular , weak acid HCl = molecular , strong acid .

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If you had a system, that had large amounts of daily data inflows, that you were running queries on yearly data, how would you position Flume,Hive and Impala for this system Solution As we have system that have large amount of daily data inflows, and we also running queries on yearly data, in this case its important to collect and analyze the data. This collection of logs of the data is being done by Flume and Hive. This is why Flume and hive lots of importance in the system where we are dealing with large amount of data. We required to collect the logs because of following reasons: 1. In error scenario, if we have proper logs then its easy to go to the root cause of the problem. 2. These logs provides the proper picture of the system, its in\'s and out\'s of the system. Flume is basically a opne-source software used for log collection. Its also can be used for montioring the log files, by installing it to various host machines. Hive integration can be done with Flume to get more features. Impala is also used for data analytic\'s and its also open-source to use. .

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If two points are in a common reference frame, then a They are not in motion relative to each other. They are not accelerating relative to each other. They are in the same gravitational field. They must be the same point. Solution the motion has to be described with respect to a reference frame Now in the given scenario if both the particles are in the same frame of reference, it may be possible that both of them are moving with respect to the frame of reference. With the given options, it is most likely that they are not moving relative to each other. (a) any information about the nature of reference frame could have been more useful. .

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Identify and prioritize information assets. Identify and prioritize threats to information assets. Choose a company (any company that interests you) to use as your company (You may also use your personal system as your company). You will assume the role of the Chief Security Officer of the company. You will identify all of your security assets. You will then identify and prioritize the threats to those assets. See NIST Special Publication 800-26 for guidance in doing the self-assessment. Solution In information security, computer security and network security an Asset is any data, device, or other component of the environment that supports information-related activities. Assets generally include hardware (e.g. servers and switches), software (e.g. mission critical applications and support systems) and confidential information.Assets should be protected from illicit access, use, disclosure, alteration, destruction, and/or theft, resulting in loss to the organization. .

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