Computer GK : Computer Questions and Answers. Who invented Compact Disc? Ans : James T Russel. Which day is celebrated as world Computer Literacy Day? Ans : December 2. Who invented Java? Ans : James A Gosling.

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Longhorn was the code name of ? Ans : Windows Vista. Who is known as the Human Computer of India? Ans : Shakunthala Devi. What is mean by Liveware? Ans : People who work with the computer. Which computer engineer got Nobel Prize for literature in 2.

J. M. What is Beta Test? Ans : Trial test of a computer or software before the commercial launch. First Indian cinema released through internet is ...

Budding micro-chefs can create a whole host of meals in a combination microwave, even a full roast dinner. The best combi microwaves can cook as well as a. Now is the time for you to make your plan and move ahead with your education. Unlock your potential and earn your degree online at Strayer University today. Die PC-FAQ enthält Antworten zu vielen Fragen rund um den PC, sowie Erklärungen der häufigsten Computerbegriffe und ein Wörterbuch. Computer Quiz 2.Click here to find General Knowledge questions,General Knowledge preparation,General Knowledge puzzles etc. Search metadata Search full text of books Search TV captions Search archived web sites Advanced Search.

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Ans : Vivah. 12. Rediff. Ans : Ajith Balakrishnan and Manish Agarwal.

What is the extension of PDF? Ans : Portable document format. Mows is a type of mouse for ....

Expand RDBMS? Ans : Relational Data Base Management System. Difference engine was developed by... Ans : Charles Babbage. Orkut. com is now owned by ... Ans : Google. 18.

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What is the expansion of COBOL? Ans : Common Business Oriented Language.

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Ans : IBM2. 3. What is the full form of  IEEE? Ans : Institute of Electric and Electronic Engineers. Who developed COBOL? Ans : Grace Murry Hopper. Email was developed by... Ans : Raymond Samuel Tomlinson (Ray Tomlinson)2.

Green dam is ... Ans : Web Filter. What is the expanded form of CMOS ? Ans : Complementary Metal Oxide Semoconductor. Who is Netizen ? Ans : Net Citizen (Citizen who uses internet)2. What is Scareware? Ans : Fake antivirus softwares.

When was the first smart phone launched? Ans : 1. 99. 2 (IBM Simon).

Network Security Concepts and Policies > Building Blocks of Information Security. In this chapter, you learn about the following topics: Fundamental concepts in network security, including identification of common vulnerabilities and threats, and mitigation strategies. Implementation of a security architecture using a lifecycle approach, including the phases of the process, their dependencies, and the importance of a sound security policy. Install Google Play Di Nokia Xl Usb on this page. The open nature of the Internet makes it vital for businesses to pay attention to the security of their networks. As companies move more of their business functions to the public network, they need to take precautions to ensure that the data cannot be compromised and that the data is not accessible to anyone who is not authorized to see it.

Unauthorized network access by an outside hacker or a disgruntled employee can cause damage or destruction to proprietary data, negatively affect company productivity, and impede the capability to compete. The Computer Security Institute reported in its 2. CSI Computer Crime and Security Survey (available at http: //gocsi. Unauthorized network access can also harm relationships with customers and business partners, who might question the capability of a company to protect its confidential information.

The definition of “data location” is being blurred by cloud computing services and other service trends. Individuals and corporations benefit from the elastic deployment of services in the cloud, available at all times from any device, but these dramatic changes in the business services industry exacerbate the risks in protecting data and the entities using it (individuals, businesses, governments, and so on). Security policies and architectures require sound principles and a lifecycle approach, including whether the data is in the server farm, mobile on the employee’s laptop, or stored in the cloud. To start on our network security quest, this chapter examines the need for security, looks at what you are trying to protect, and examines the different trends for attacks and protection and the principles of secure network design. These concepts are important not only for succeeding with the IINS 6.

Establishing and maintaining a secure computing environment is increasingly more difficult as networks become increasingly interconnected and data flows ever more freely. In the commercial world, connectivity is no longer optional, and the possible risks of connectivity do not outweigh the benefits. Therefore, it is very important to enable networks to support security services that provide adequate protection to companies that conduct business in a relatively open environment. This section explains the breadth of assumptions and challenges to establish and maintain a secure network environment. Basic Security Assumptions.

Several new assumptions have to be made about computer networks because of their evolution over the years: Modern networks are very large, very interconnected, and run both ubiquitous protocols (such as IP) and proprietary protocols. Therefore, they are often open to access, and a potential attacker can with relative ease attach to, or remotely access, such networks. Widespread IP internetworking increases the probability that more attacks will be carried out over large, heavily interconnected networks, such as the Internet. Computer systems and applications that are attached to these networks are becoming increasingly complex. In terms of security, it becomes more difficult to analyze, secure, and properly test the security of the computer systems and applications; it is even more so when virtualization is involved. When these systems and their applications are attached to large networks, the risk to computing dramatically increases.

Basic Security Requirements. To provide adequate protection of network resources, the procedures and technologies that you deploy need to guarantee three things, sometimes referred to as the CIA triad: Confidentiality: Providing confidentiality of data guarantees that only authorized users can view sensitive information. Remote Desktop Activex Could Not Be Installed At This Time there. Integrity: Providing integrity of data guarantees that only authorized users can change sensitive information and provides a way to detect whether data has been tampered with during transmission; this might also guarantee the authenticity of data. Availability of systems and data: System and data availability provides uninterrupted access by authorized users to important computing resources and data. When designing network security, a designer must be aware of the following: The threats (possible attacks) that could compromise security. The associated risks of the threats (that is, how relevant those threats are for a particular system)The cost to implement the proper security countermeasures for a threat.

A cost versus benefit analysis to determine whether it is worthwhile to implement the security countermeasures. Data, Vulnerabilities, and Countermeasures. Although viruses, worms, and hackers monopolize the headlines about information security, risk management is the most important aspect of security architecture for administrators. A less exciting and glamorous area, risk management is based on specific principles and concepts that are related to asset protection and security management. An asset is anything of value to an organization. By knowing which assets you are trying to protect, as well as their value, location, and exposure, you can more effectively determine the time, effort, and money to spend in securing those assets.

A vulnerability is a weakness in a system or its design that could be exploited by a threat. Vulnerabilities are sometimes found in the protocols themselves, as in the case of some security weaknesses in TCP/IP. Often, the vulnerabilities are in the operating systems and applications. Written security policies might also be a source of vulnerabilities. This is the case when written policies are too lax or are not thorough enough in providing a specific approach or line of conduct to network administrators and users. A threat is any potential danger to assets. A threat is realized when someone or something identifies a specific vulnerability and exploits it, creating exposure.

If the vulnerability exists theoretically but has not yet been exploited, the threat is considered latent. The entity that takes advantage of the vulnerability is known as the threat agent or threat vector.

A risk is the likelihood that a particular threat using a specific attack will exploit a particular vulnerability of a system that results in an undesirable consequence. Although the roof of the data center might be vulnerable to being penetrated by a falling meteor, for example, the risk is minimal because the likelihood of that threat being realized is negligible. An exploit happens when computer code is developed to take advantage of a vulnerability.

For example, suppose that a vulnerability exists in a piece of software, but nobody knows about this vulnerability. Although the vulnerability exists theoretically, there is no exploit yet developed for it. Because there is no exploit, there really is no problem yet. A countermeasure is a safeguard that mitigates a potential risk. A countermeasure mitigates risk either by eliminating or reducing the vulnerability or by reducing the likelihood that a threat agent will be able to exploit the risk. Data Classification.

To optimally allocate resources and secure assets, it is essential that some form of data classification exists. By identifying which data has the most worth, administrators can put their greatest effort toward securing that data. Without classification, data custodians find it almost impossible to adequately secure the data, and IT management finds it equally difficult to optimally allocate resources. Sometimes information classification is a regulatory requirement (required by law), in which case there might be liability issues that relate to the proper care of data.