All posts by : chebby

The city council in the town of Durburn has decided to improve road sign placement, especially for the numerous dead ends that are currently unmarked in various parts of the city. They have given you a road map, and you must determine where to put up signs to mark all the dead ends. They want you to use as few signs as possible.

The road map is a collection of locations connected by two-way streets.

The following rule describes how to obtain a complete placement of dead-end signs:

Consider a street S connecting a location x with another location. The x-entrance of S gets a dead-end sign if, after entering S from x, it is not possible to come back to x without making a U-turn. A U-turn is a 180- degree turn immediately reversing the direction.

To save costs, you have decided that you won’t install redundant dead-end signs, as specified by the following rule:

Consider a street S with a dead-end sign at its x-entrance and another street T with a dead-end sign at its y-entrance. If, after entering S from x, it is possible to go to y and enter T without making a U-turn, the dead-end sign at the y-entrance of T is redundant. INPUT

The first line of input contains two integers n and m, where n (1 ≤ n ≤ 5*105) is the number of locations and m (0 ≤ m ≤5 * 105) is the number of streets. Each of the following m lines contains two integers v and w (1 ≤ v < w ≤ n) indicating that there is a two-way street connecting locations v and w. All location pairs in the input are distinct.

OUTPUT

On the first line, output k, the number of dead-end signs installed. On each of the next k lines, output two integers v and w marking that a dead-end sign should be installed at the v-entrance of a street connecting locations v and

w. The lines describing dead-end signs must be sorted in ascending order of v-locations, breaking ties in ascending order of w-locations

What do you think is the single greatest physical threat to information systems? Fire? Hurricanes? Sabotage? Terrorism? Discuss this question and provide support for your answer.

Write about Data Center Security in 700 Words  double spaced paper, written in APA format, showing sources and a bibliography  and also prepare PPT consisting of 10-12 slides about Data Center Security

Please find attachment

Wired Network Performance Consider a wired network model (OMNET++) using a Gigabit Ethernet (GbE) backbone switch linked to several Ethernet sub-switches (also called subnet) so that large number of wired nodes/clients can be accommodated to the network. For example, one subnet can support up to 20 nodes (for optimum performance). So, if you are simulating a network with 100 nodes in total, your network model should have 5 subnets linked to a GbE backbone. Simulation parameters: 

• Number of nodes/clients: 100 

• Simulation time: 3600 Sec (longer required for Video streaming)

• Traffic type: Video streaming

 • Packet type: UDP packet 

• Performance metrics: 

(a) Video Throughput; (b) Video End-to-end delays; (c) Video packet losses. 

[Hint: Video streaming uses UDP transport layer protocol, and hence UDPVideoStreamCli, UDPVideoStreamSvr can be used for video client and video Server, respectively.] Investigation: Effect of increasing the number of video clients on system performance You may use the following table to record your simulation results. 

Analyse the results (including model validation) and write your report (4-6 pages) by summarising your research findings. 

Hint: You can draw several graphs including number of clients versus video throughput, end-to-end delays, and packet losses.

General Report Format Cover page: Assignment title, student’s name, and ID Introduction: What, why and how? – Begin your report with a clear objective (What!) of your assignment. Explain why this assignment/research is needed and how you have completed it. Outline the structure of the rest of the report. Modelling the network: Describe the model that you have developed using appropriate screenshots for models and subnet (hint: avoid unnecessary screenshots). Results and Analysis: Summarise your simulation results using tables and/or graphs (Excel or Matlab graphs) and provide a comparative analysis. Model Validation: Discuss how you have validated your simulation results. Lesson learned: Write a paragraph or two, reflecting on your own learning. Conclusion: Summarise the main findings and future research directions. References: List at least 5 references that you have used in the report. Report Length: (Part 1: 4-6 pages; Part 2: 10-14 pages) Spacing: 1.5 Font: 11 Times New Roman.

  

Build out the ERD diagrams for the entire solution based on the following questions (you must have at least 3 tables for full credit, there is no limit based on your simplification of the data. The simplification of the data should follow the in-class examples of data, with no duplication in tables)

Provide 

I. The MYSQL code (within the word document) to build the database and tables

II. The MYSQL code (within the word document) to answer each of the following questions

III. Provide screen shots answering each question along with any supporting text

The answers must be done in SQL, not table presentation and manual interpretation of the data

Questions :

1. What is the total revenue for the year? 

2. What is the gross profit for the year? (based only on what is in the tables)

3. How much revenue did each wine provide for the year?

4. What is the Average revenue per month per location for the year?

5. What is the final inventory of the Premium Red wine?

6. If the retail price of the wine increases by 10%, what is the gross profit margin ?

7. How many bottles of the different wines were ordered in July? 

8. What is the revenue per year per restaurant?

Write in essay format not in outline, bulleted, numbered or other list format.  

Use the five paragraph format. Each paragraph must have at least five sentences. Include 3 quotes with quotation marks and cited in-line and in a list of references. Include an interesting meaningful title.

 Cite your sources in a clickable reference list at the end. Do not copy without providing proper attribution (quotation marks and in-line citations). 

 Remember, one table, one chart, five slides with SmartArt, and a video must be included. can it be done by 10 pm ? please

 

 Provide a reflection of at least 500 words (or 2 pages double spaced) of how the knowledge, skills, or theories of this course have been applied, or could be applied, in a practical manner to your current work environment. If you are not currently working, share times when you have or could observe these theories and knowledge could be applied to an employment opportunity in your field of study 

My course details:  Descriptive Statistics ,  Paired and Independent samples t-tests .

1. describe the essential characteristics of quantitative research.
2. Apply inferential statistical tests on problems requiring parametric and non-parametric analyses.
3. Identify potential research designs for various problems.
4. Analyze statistical information in the professional literature on a topic related to their own research project. 

 Note: Minimum 500 words not including title and reference page. References should be taken from peer revived 

 Use of proper APA formatting and citations. If supporting evidence from outside resources is used those must be properly cited. 
Share a personal connection that identifies specific knowledge and theories from this course. 
Demonstrate a connection to your current work environment. If you are not employed, demonstrate a connection to your desired work environment.  
You should NOT, provide an overview of the assignments assigned in the course. The assignment asks that you reflect how the knowledge and skills obtained through meeting course objectives were applied or could be applied in the workplace

Discuss a particular type of Malware and how has it been used in “todays news” and the respective impact on cyber security. Add to your discussion ways the Malware could have been detected and potentially avoided.