Causes of Water Pollution Essay Example | Topics and Well Written Essays - 750 words

Causes of Water Pollution - Essay Example It disrupts the balance of an ecosystem. Water pollution is caused when pollutants are indirectly or directly discharged into water bodies. As a result of the impairment by anthropogenic contaminants, polluted water does not support human use (Hester 115). It also does not support constituent biotic communities. Plants and animals are immensely affected by water pollution. Though natural events such as algae blooms, volcanic eruptions, earthquakes, and storms can cause water pollution, human activities are the major causes of pollution. Â  The contaminants that lead to water pollution are covered in a wide spectrum of pathogens and chemicals, in addition to sensory and physical changes that are occasioned by discoloration and changes in temperature. Chemical substances that cause water pollution are usually toxic, while the pathogens produce waterborne diseases (Hester 139). Alterations in the physical chemistry of water include the electrical conductivity and acidity of water. Â  Water pollution can be caused by pathogens, which are disease-causing micro-organisms. Most of the bacteria found in water are beneficial or harmless. However, a few pathogens have the potentials to cause infectious diseases. The best indicator for pathogens in water is the Coliform bacteria, which is used as a bacterial indicator in case of water pollution. There are a number of harmful microorganisms that are found on the surface of the water. The pollutant microorganisms include Burkholderia pseudomallei, Cryptosporidium param, Giardia lamblia, Salmonella, parasitic worms and Novo virus (Hester 166). High levels of pathogens may be caused by the discharge of inadequately treated sewage into freshwater systems. Additionally, some cities may have aged infrastructure, which may leak pathogens into the water system. Â  

NPS Deploying network policy server Essay Example | Topics and Well Written Essays - 2000 words

NPS Deploying network policy server - Essay Example Each and every employee in the organization who participates in project implementation has the responsibility do so. Because of the reason above, the best way in ensuring data security in for one central park and at the same time being economical to the company is by investing it the team’s technology. Technology is very dynamic and new things come every other time. When a principle instructs the vendor to direct or educate the employees on information system security the concerned employees feel that their contribution to the company is valued. The information security system that is supposed to be implemented in a bank must take in consideration the four major principles of information security. These are information confidentiality, integrity, authenticity and availability. Information confidentiality is whereby the information of a company is protected from getting into the hands of people who are not authorized. Integrity is a security factor that stops undetected modific ation of data for example the issue of students examination result cannot be modified or edited by unauthorized person because it is only the examination coordinator that have the right of doing editing it. The integrity is breached when anybody who is not an exam coordinator make an amendments. Authenticity means that particular information that is used for a certain purpose is genuine. The validity of individual that get access to some data is ensured by using authentication methods for example he use of password. The security of information that goes via internet is aided by ensuring that the channel that it goes through is the right one (Mueller, 2011). This is by use of IP address that is assigned to each computer. Availability means that the information is accessible anytime the users want. The paper gives details on implementing Network Policy Server in one central park. Security vulnerability Servers are network-based. This exposes all the data it contains to network attacks . A network attacker can use the exposures in the protocols that are ranked high and stronger applications to cultivate the disadvantage that are not checked by the firewalls that are of previous version. The access may prove dangerous as the client data would be reviewed during the transfer to a third party and it would be difficult to track as the activity is a part of the process created for a particular server and hence the severity of this activity is high. Considering the fact that only the users that are involved into this activity will have access to the transferred data, the likelihood of any intrusion is moderate. Database server that stores employee information uses student’s identification details as the only form of security. A password cracker that can overcome the technology used in designing the password can get access to the employee information. More so, database administrator’s password can be cracked and modification. Company’s information fo r example policies can create a mess in the institution. Super user privileges grant a great amount of power to any party who has access to the super user account. If an aggressive party is able to access a super user account on the database server they will be able to copy. The wireless access point devices are vulnerable to physical damages for example fire or theft. This will lead to denial of services in the entire department that