Network Security Assignment Example | Topics and Well Written Essays - 2250 words

Network Security - Assignment Example However, to support these services on the current network, several considerations are required in the following domains: Network Type i.e. client/server Network Technology i.e. size, speed, and scale requirements Network Cabling i.e. considering supported data rates and security Network Interfaces & Protocols Network Services Requirements Data and Network Security Requirements Network Performance Requirements Compatibility Requirements 2 What is ISMS? The ISMS for Mr. Manos Llewellyn should consist of Policies, Processes, Guidelines, Standards, and tools. Likewise, in order to make this system a successful for Mr. Manos Llewellyn, it contains five key elements. The first component is CONTROL. The control establishes a framework and distributes responsibilities in order to develop an environment for implementing the ISMS for Mr. Manos Llewellyn. The next key element is PLAN. The Plan defines the service level agreements as per business requirements, foundation of contracts, operationa l level agreements, and policy statements for Mr. Manos Llewellyn. All these components included in the planning are based on the requirements of the business. After the completion of control and plan, the next key element is to IMPLEMENT all these components. Implementation involves creating knowledge and consciousness along with categorization and listing of assets. Moreover, personnel security and physical security related to theft is implemented. Likewise, implementation element also involves security related to network, applications and computing devices. In addition, configuration and management of access rights and contingency planning of security incident processes is also a part of this element. All of the three elements control, plan and implement lays a foundation of a structure for Mr. Manos Llewellyn. After the deployment of ISMS structure, the next key element is EVALUATE. The evaluation consists of internal and external auditing of the processes that are implemented i n the previous three phases. Moreover, self-assessment is also conducted, along with security incident evaluation. For instance, if there is a breach in security, the security management processes ensure to deal with security incidents. The last key element is MAINTAIN. This phase frequently monitors processes including security management, new threats, vulnerabilities and risks. These elements, do not only monitors these processes, but also improve processes where required , and if there are certain processes that needs to be improved for Mr. Manos Llewellyn, the ISMS cycle start from the first key element i.e. CONTROL. 3 ISMS Scoping A good definition of ISMS is defined as (Humphreys 2007) â€Å"An information security management system (ISMS) includes all of the policies, procedures, plans, processes, practices, roles, responsibilities, resources, and structures that are used to protect and preserve information. It includes all of the elements that organizations use to manage an d control their information security risks. An ISMS is part of a larger management system†. The goal is to protect the information for Mr. Manos Llewellyn, as well as its customers. The ISO/IEC has established two standards that emphasize of ISMS. The ISO/IEC 17799 is a code for information security management. It is the framework or a system that is based on certain processes, to ensure that organizations achieve their information

Radioisotopes in Medicine Essay Example | Topics and Well Written Essays - 1250 words

Radioisotopes in Medicine - Essay Example There are neutrons found in the nucleus. These are the neutrons which give an element a radioactive status. Unlike the protons, these neutrons are found in the different number of different at atoms of the same element and based on this difference in the number of neutrons the isotope status is acquired by an element. The sum of protons and neutrons in an atom is called its atomic mass. So atomic number of all atoms of an element is the same but atomic mass could be different (Medical isotopes). There are some elements which decay and are converted to isotopes that posses the properties of unstable isotopes; examples are uranium and thorium. The same isotopes can be generated artificially when it does not exist naturally in some elements. This is achieved by a combination of protons and neutrons. These radioisotopes can be obtained through a variety of ways but the most frequent way of producing radioisotopes is by neutron activation in a nuclear reactor. There are two major outcomes which give radioisotope status to an element, either by gaining a neutron and making an atom neutron rich or by gaining a proton and resulting in proton rich atom. The unstable state of a radioisotope is converted to stable one by the emission of alpha or beta particle with some energy release in the form of gamma rays. In fact, this is radioactive decay of that atom. In medicine, these radioactive products are termed as radiopharmaceuticals (Medical isotopes).   Around the first decade of the last century there had been some initial, discussions on the issues of radioactivity and radioisotopes like thorium and ionium. Most of the radioisotopes which are in more frequent use today were discovered during the third decade of the last century. Radioactive isotopes like, iodine-131, cobalt-60, technetium-99m and others were discovered during a short period of three years (1938-1941) (Radioisotopes for diagnosis and treatment).   Till mid-seventies of the last century there was not much development in the field when some newly discovered radioisotopes along with technetium-99m revolutionized the field of nuclear medicine when technetium-generator made it practical to convert inactive pharmaceuticals to be labelled on the hospital premises (Radioisotopes in medicin). In 1980s, gamma cameras performance was improved through computer integration which helped in enhancing the processes and eventually the quantification of the radioactivity emitted. (Radioisotopes in medicin). Around the last decade of the last century the image quality as well as details were made improved with the help of single photon emission computer tomography (SPECT) systems. Radioisotopes utilization in Medicine   Radioisotopes have been utilized in medicine very extensively for preventive, diagnostic, therapeutic and prognostic purposes.