Computer Science

Part 1As the use of wireless devices continues to expand, the need to secure these connections must follow suit. Cell phones now have the capability to create “hot spots,” and many fast-food restaurants, hotels, and stores offer free wireless Internet connections. Research and discuss a best practice list that an end user should take into consideration when connecting to a wireless access point.As handheld devices continue to gain in popularity, the topic of wireless security continues to expand. It is now commonplace for companies to market a free Internet connection. Research and discuss the security concerns that these free hot spots can create for the end user.Part 2The CEO of your company has recently contemplated introducing a wireless element to the network, as well as a virtual private network (VPN) server for the salespeople and individuals telecommuting from remote locations. Although this seems like a good idea, the CEO is requesting more information because he is worried that this may create a security issue and network congestion and response time. Prepare a 4–5-page narrative to the CEO explaining what you would do to secure the new VPN to include an explanation of the VPN pre-shared key. Discuss selection of wireless encryption methods, and compare and contrast WEP, WPA, and WPA2 to include an explanation of the bit strength for each. Explain the concepts of war driving and the pros and cons of broadcasting the wireless SSID. Research packet capture tools, and explain how they can be used for network management and resource balancing as well as their use to analyze a virus in the process of propagating across your network in real time. Explain how the tool works and what information it is capable of capturing. Select 3 types of information that could be captured from a packet capture tool, and explain how you would use it to either identify a security violation or an opportunity for performance optimization.

700-word discussion: You have been hired as the CSO (Chief Security Officer) for an organization. Your job is to develop a very brief computer and internet security policy for the organization that covers the following areas:1. Computer and email acceptable use policy,2. Internet acceptable use policyMake sure you are sufficiently specific in addressing each area. There are plenty of security policy and guideline templates available online for you to use as a reference or for guidance. Your plan should reflect the business model and corporate culture of a specific organization that you select.

Module 1 Discussion QuestionSearch “scholar.google.com” for a company, school, or person that has been the target of a network or system intrusionwithin the past 5 years?What information was targeted? Was the attack successful? If so, what changeswere made to ensure that this vulnerability was controlled? If not, what mechanisms were in place to protect against the intrusion?You must write about a real-life network/system attack that you found through your internet research. Failure to discuss a targeted attack and cite/reference the news source will result in a 0 for this entire discussion.I am adding my classmate’s response for the above question. You will have to write response for each post in 150 words. No references needed.Discussion 1:Technological growth and the internet age has brought with it increased cases of cybercrimes where cybercriminals target personal information of governments, private firms, and even individual consumers. The value of data and its sensitivity to persons who own it have made cybercrimes and system intrusions very costly for the victims.In 2017, Equifax broke the news of the system intrusion it had suffered as a company and the resultant exposure of data for approximately 143 million citizens of the United States. The other citizens who had been affected were UK citizens and Canadians, whose specific numbers were not revealed. The breach was noted to have affected online web application only with core consumer database untouched. The information targeted the names, dates of birth, residential addresses, social security numbers, and driver’s license numbers of the consumers.The company responded to the breach by setting up a website from which customers would be able to tell if they were affected and the potential impact that it may have if their data was accessed (Nurse, 2017). Other measures included the company asking customers to register with their TrustedID premiere, which is a service used in credit monitoring from which they had to agree to a compulsory arbitration clause that would not apply to claims that may have originated from the security breach.In the wake of the attack, and in a bid to forestall such attacks in the future, Equifax employed a new chief information security officer and rolled out comprehensive efforts to change their approach to data security. Equifax also invested more than $200 million on infrastructures that would help in securing user data, and the chief information security officer since reiterated that the company had allocated him enough resources to ensure they build hack-proof security systems. The company in the process prioritized fundamentals, and essential projects first given the need for an overhaul of most systems like vulnerability management and patching processes.Discussion 2:A network intrusion system from being hijacked and used, the computer equipment must have the ability to be disconnected from the network. The type of computer equipment used is very important. The most common computers used in intrusion systems are laptops which run Windows operating system. In this case, the network intrusion system would monitor the laptops which are connected to the network but it would not be able to determine any identity of the computers that are being used in the network. When a computer is not present in the network and a computer is not in the network, the intrusion system does not interfere with the operation of the network. (Alhadad, R. 2019).A network intrusion system to be successful, there must be an entry in the intrusion database called network intrusion. This entry has to contain detailed information like IP address, MAC address, hostname, ports that are used, and all the traffic traffic that is flowing through that entry. This is an attack scenario when the attack has a purpose, and has an objective, and has a target. In an attack situation, this is a threat scenario. In an intrusion scenario the attack is carried out by a hacker using malware, or a Trojan, on a computer. The computer has become compromised. Once the computer has become compromised, the hacker enters the network and creates the network intrusion rules on the compromised computer. The computer can now be used as a target for an attack. DANE This is an intrusion system that intercepts the data traffic on the network. It looks the computers, then sends the information in the email. This is the system that can be used for monitoring the computers that are being monitored. If the intrusion system detects any login attempts from unauthorized computers, it is supposed to shut down the unauthorized users. This way, the intruder will not be able to break into your network and compromise your personal data. Network intrusion systems are very useful in preventing and containing network intrusions. These intrusion systems are installed on computers that are connected to the local network and to the internet via a firewall or router. (Poornachandran, P. 2018).

1.1 What is the OSI security architecture?1.2 What is the difference between passive and active security threats?1.3 List and briefly define categories of passive and active security attacks.1.4 List and briefly define categories of security services.1.5 List and briefly define categories of security mechanisms.1.6 List and briefly define the fundamental security design principles.1.7 Explain the difference between an attack surface and an attack tree.

Discuss IT leaders can promote innovation.Use your own experiences as good or badexamples.Forum rules: Your answer must be substantive,which usually requires 300 words or more Your answer must be well written and well organized Your answer must include one properly formatted APA in-text citation to a scholarly reference. The full reference must be provided at the end of your answer with a link if one is available. Post two replies to your classmates Your replies should be meaningful, which means they should engage your classmate in discussion focused on the forum questions. Usually this requires 150 words or more.

Assignment Content There is no such thing as a bug-free IT project. Because bugs are a fact of IT project life, IT project managers must articulate a process for identifying, tracking, and handling the bugs that will inevitably occur. In addition, because technical and business requirements change frequently, IT project managers must also plan to log and track requests for new features and functionality.Readthe following linked documents: “Visual Studio – Manage Bugs”: This article describes the process of tracking bugs in Visual Studio, a popular .NET development suite created by Microsoft®. “What Is a Bug and Issue Tracking Tool?”: This article describes the process of tracking bugs in Jira, a popular bug tracking and project management tool created by Atlassian. Createa 3-page Microsoft®Word document of a bug tracking process for the project you created in the individual assignments in Weeks 2 and 3 *(Attached). Be sure to differentiate between bugs and feature requests. For this assignment, you will only be tracking bugs.Your tracking process must include: Description of software you propose using for bug tracking (in-house developed or third-party) Description of issues that will be considered bugs (vs. feature requests) Description of who will use the system to track bugs Description of who will monitor the system, follow up with the requestor as necessary, and implement the bug fixes Description of bug-related information (such as a unique tracking number, description, assignee, etc.) necessary to identify, fix, and log bugs Submityour completed document.

You need to create a free account and watch this webinar: https://www.brighttalk.com/webcast/18253/417776 And write about 600 words and more using the following points: 1. Some details about the presenters and a summary of the whole webinar 2. SFIA Skills Related to engagement activity. visit the link ( https://sfia-online.org/en/sfia-7/all-skills-a-z) which SFIA skills does it relate it to and at what level, try to match with at least level 5 and why do you think so, if you click on any of the skills, you will see the levels 3. How it relates to the ACS CBoK knowledge book, find the book attached 4. Reflection – how it can help me in my career , some knowledge that I have taken away from the whole thing etc You can mix and match the 600 words however you like I have also attached an example of how something similar was completed but for a different webinar

The Statement of Purpose is part of my application package for the Msc in Information Management, Tilburg University. I have a business background as i have a degree in business administration, but no relevant working experience. I’m not a native speaker, so in order to avoid any discrepancies between my actual writing level and the content, you should not use extremely complex language. The content must be unique because it will be checked for plagiarism by the admission committee members.

1.Design an algorithm for the following operations for a binary tree BT, and show the worst-case running times for each implementation: preorderNext(x): return the node visited after node x in a pre-order traversal of BT. postorderNext(x): return the node visited after node x in a post-order traversal of BT. inorderNext(x): return the node visited after node x in an in-order traversal of BT. 2. Design a recursive linear-time algorithm that tests whether a binary tree satisfies the search tree order property at every node. 3. Exercise 8.2. Illustrate what happens when the sequence 1, 5, 2, 4, 3 is added to an empty ScapegoatTree, and show where the credits described in the proof of Lemma 8.3 go, and how they are used during this sequence of additions. 4. Implement a commonly used hash table in a program that handles collision using linear probing. Using (K mod 13) as the hash function, store the following elements in the table: {1, 5, 21, 26, 39, 14, 15, 16, 17, 18, 19, 20, 111, 145, 146}. 5. Exercise 6.7. Create a subclass of BinaryTree whose nodes have fields for storing preorder, post-order, and in-order numbers. Write methods preOrderNumber(), inOrderNumber(), and postOrderNumbers() that assign these numbers correctly. These methods should each run in O(n) time.

Write a justification paper, of at least 2 pages, to your boss explaining how a relational database solution can be applied to a current business problem or area for improvement. Assume that your boss knows nothing about relational database theory. The goal of this paper is to obtain your boss’s approval to proceed with your stated project. Do not focus on technical aspects of a database management system. Focus on how the information will be captured, manipulated, managed, and shared, and the value the database brings to the organization. Include brief examples of how other industries (both domestic and international) have successfully used relational databases to increase efficiency. Your paper must follow all APA Style Guide requirements. All sources must be properly cited using APA guidelines. Include an APA title page and an APA References page. The title page and References pages are in addition to the minimum of 2 pages of body text for your paper. In your paper you must include an introduction section with a heading, body text topic sections as appropriate with headings, and a conclusion section with a heading. Note that APA requires 12 point Times Roman font throughout and 1″ margins.