Hw Lab

In: Computers and Technology

Submitted By w121426
Words 1736
Pages 7
1. What is the main difference between a virus and a Trojan?
A virus is a program that is capable of replicating with little or no user intervention, and the replicated programs also replicate further. There is typically a piece of code that causes an unexpected, usually malicious, event (payload) to occur. Viruses are often disguised as games or images with clever marketing titles.
A Trojan horse is a program that either pretends to have, or is described as having, a set of useful or desirable features, but actually contains a damaging payload. True Trojan horses are not technically viruses, since they do not replicate, however many viruses and worms use Trojan horse tactics to infiltrate a system. Although Trojans are not technically viruses, they can be just as destructive.
2. A virus or malware can impact which of the three tenets of information systems security (CIA)? Describe how it impacts it as well.
Virus maybe can send files to other people that don’t allow reading these files. It will affect Confidentiality. Some virus will break program. Then these programs cannot run. This wills effect Availability. Some virus will change some file in a program. This wills effect Integrity.
3. Once a malicious file is found on your computer, what are the default settings for USB/removable device scanning? What should an organization do regarding use of USB hard drives and slots on existing computers and devices?
Besides Vendor IDs and Product IDs, some devices also have a serial number associated with them. The “Serial Number Descriptor” string is optional, but a fair number of devices such as thumb drives, removable USB hard drives, PDAs and cell phones have them. While most of these scanning and tracking details would be of most use with the “USB Mass Storage devices containing malware” and the “U3 thumb drives with "evil" autorun payloads” categories, they…...

Similar Documents

Hw 1 It220

...Erick Dinzey ITT-220 Mr. Falaise HW 1 Pgs. 43-47 All Questions Questions and Problems: Section 1-1: 1. State whether the following network descriptions are describing a MAN, WAN, or LAN: a. LAN b. MAN c. WAN 2. Expand the acronym NIC. Network Interface Card 3. Expand the acronym MAC. Media Access Control 4. Expand the acronym LAN. Local Area Network 5. Expand the acronym WAN. Wide Area Network Section 1-2: 6. Define the term protocol. Set of rules established for users to exchange information. 7. Define the term topology. Architecture of a network. 8. Define the term deterministic. Access to the network is provided at fixed time intervals 9. A disadvantage of the token-ring system is that if an error changes the token pattern, it can cause the token to stop circulating. This can be eliminated by adding a Token-ring hub (A hub that manages the passing of the token in a Token-Ring network.) 10. State the network topology being used in the following figures (Bus, Star, Ring, or Mesh). a. Mesh b. Bus c. Ring d. Star 11. What is the difference between a hub and a switch? Hub – Broadcasts data it receives to all devices connected to its ports. Switch – Establishes a direct connection from the sender to the destination without passing the data traffic to other networking devices. Section 1-3: 12. Define the acronym CSMA/CD and the protocol that uses CSMA/CD...

Words: 1934 - Pages: 8

Acct Hw Chapter 15

...ACCT 495 January 28, 2013 HW: E15-9,10,18 E 15-9 N = 6 $562,907 (5.32948) = 3,000,000 I =5% Lessor 1/1 Lease Receivables 3,000,000 Equipment Warehouse 3,000,000 6/30 Cash 562,907 Lease Receivables 562,907 12/31 Cash 562,907 Lease Receivables 441,052 Interest Revenue 121,855 Georgia- Atlantic Inc. Income Statement For the year ended 31, 2011 Non-Operating Revenue Interest Revenue 121,855 Operating Expense Depreciation Expense 500,000 Georgia- Atlantic Inc. Balance Sheet For the year ended December 31, 2011 Assets Non-Current Assets Leased Equipment 3,000,000 Less Accumulated Depreciation (500,000) Net Leased Equip 2,500,000 Long-Term Assets Lease Receivable 1,996,041 Georgia- Atlantic Inc. Statement Cash Flow For the year ended December 31, 2011 Cash Flow from Operating Activities Interest received 121,855 Depreciation Exp. 500,000 621,855 Cash Flow from Investing Activities Lease Payment Received 1,003,959 E-10 Present value of lease payments (to the nearest $000) ------------------------------------------------- $562,907 x 5.32948* = $3,000,000 * PVAD: N=6, I=5% 1/1 Lease Rec. 3,000,000 COGS 2,500,000 Sales 3,000,000...

Words: 561 - Pages: 3

Hw Lab

...1. What is the main difference between a virus and a Trojan? A virus is a program that is capable of replicating with little or no user intervention, and the replicated programs also replicate further. There is typically a piece of code that causes an unexpected, usually malicious, event (payload) to occur. Viruses are often disguised as games or images with clever marketing titles. A Trojan horse is a program that either pretends to have, or is described as having, a set of useful or desirable features, but actually contains a damaging payload. True Trojan horses are not technically viruses, since they do not replicate, however many viruses and worms use Trojan horse tactics to infiltrate a system. Although Trojans are not technically viruses, they can be just as destructive. 2. A virus or malware can impact which of the three tenets of information systems security (CIA)? Describe how it impacts it as well. Virus maybe can send files to other people that don’t allow reading these files. It will affect Confidentiality. Some virus will break program. Then these programs cannot run. This wills effect Availability. Some virus will change some file in a program. This wills effect Integrity. 3. Once a malicious file is found on your computer, what are the default settings for USB/removable device scanning? What should an organization do regarding use of USB hard drives and slots on existing computers and devices? Besides Vendor IDs and Product IDs, some devices also...

Words: 1736 - Pages: 7

Cis 440 Hw 1

...Name: Mohammed Al-Hashim Dated: 1/21/14 ------------------------------------------------- Class: CIS 440 Assignment: HW 01 Prepare a list of all the materials you find therein. The Home screen of the Teradata website contains the following items 1. On the top of the page you find the name of the website and four links named as follows a. Profile: Contains information regarding the account holder. b. Favorites: What resources on gathers can be saved here. c. History: Browse previously searched articles and researched data. d. Sign-out: Loges you out of the data base. 2. Near the middle of page we can see several buttons such as e. Library: Is a very wide data base that contains much information to be researched. The library can be relied on for information recourses that could aid students in this course and could also help achieve higher grades in exams by using the different resources in the library. f. Software: Here you can find access to different software that can aid in strategic planning using highly developed software. g. Community: this button contains information for students regarding future employment and job opportunities. Here you can be connected with others such with the same interests as one’s self and take advantage of the possible connection you could make to help you become successful. h. Recourses: Here you can find other recourses relating to computer systems...

Words: 502 - Pages: 3

Oce Hw #1

...HW 1 Due 2/24/13 – by noon, really at noon. Turn in via SAKAI – do not email it. Turn it into a .pdf file using export or save as. Please do not turn in a .doc or a .docx file. Name your file as follows. Lastname_hw1.pdf - like roman_hw1.pdf A Note about calculations in general, please read. Before turning your work in, it is important to ask yourself whether a calculated answer is within the realm of possibilities, independent of how detailed the calculations required to determine the answer were. For example, if I asked you how long it would take a frozen turkey sitting on your counter to thaw, you could do some fairly complicated calculations. You could consider factors like the temperature of the room, the weight of the turkey, the shape of the turkey, skin or no skin, the humidity, the heat capacity of turkey meat, etc...... If you did a lot of math and got an answer of either 4 seconds or 2 months, you should probably suspect you did something wrong. If your answer was 8 hours, that could seem reasonable given what you've likely observed with popsicles and snowmen. So, the point is, you have to apply some common sense and check your answer. You'll be given more credit on the HW (and in life in general) for admitting your answer seems wrong based on simple logic. Explaining your logic and admitting you got tripped up by the calculation is better than standing by an answer that really make no sense at all. Altimeter measurements. 1) The basic principle of satellite...

Words: 1039 - Pages: 5

Hw 3-1

...Unit 3-1 HW 1. public static String decimalToHex(int decimal) { String hex = “ “; while (decimal != 0) { int hexValue = decimal % 16; hex = toHexChar(hexValue) + hex; decimal = decimal / 16; } return hex; } 2. The Math.random creates a random number with the double data type. 3. public static void main(String[] args) { System.out.println(max(1,2)); } public static double max(int num1, double num2) { if (num1 > num2) return num1; else return num2; } public static double max(double num1, int num2) { if (num1 > num2) return num1; else return num2; } 4. It is a way of writing code; you either start at the top and work your way down or begin at the outcome and work in reverse. 5. Simpler program, reusing methods, better facilitating teamwork, easier developing, debugging, and testing. 6. Method Variable 7. for (int i = 0; i >= 0; i--) { JOptionPane.showMessageDialog(null, i); } 8. Array is fixed while ArrayList can change its size to what is needed. 9. package com.java2novice.algos; public class MyInsertionSort { public static void main(String[] args) { int[] input = { 4, 2, 9, 6, 23, 12, 34, 0, 1 }; insertionSort(input); } private static void printNumbers(int[] input) { for (int i = 0; i < input.length; i++) { System.out.print(input[i] + ", "); } System.out.println("\n"); } public static void insertionSort(int array[]) { int n = array.length; for (int j = 1; j......

Words: 301 - Pages: 2

Ieor 130 Hw#1

...David Chiu IEOR 130 HW#1 Assignment 5 September 2014 1.) a.) Wafer Fab: A fabrication plant that carries out wafer fabrication process and wafer probe. b.) Die Sort: First special electrical structures are tested to verify the proper electrical characteristics on a wafer. Afterwards each of the individual chips on each wafer is tested with a fully functional test to sort the good and failed chips on a wafer. c.) Die Bank: An inventory point of unassembled sorted die. The place where they hold product pending specific customer demand for finished goods. d.) Assembly: Dice up the completed wafer and package the chips in plastic or ceramic housings with electrical leads e.) Test: Full functional test of the packaged device at various temperatures (“device test”), branding device ID, high-temperature operation (“burn-in”) followed by re-test, packing for shipment f.) Line Yield: The fraction of wafers surviving the fab process flow g.) Die Yield: The fraction of chips on a completed wafer that function at wafer probe. h.) Overall Equipment Efficiency (OEE): The “should-take” time for the work actually completed divided by the total time. i.) Die or chip: a small block of semiconducting material, on which a given functional circuit is fabricated. Integrated circuit on a wafer. j.) Cycle Time: The time it takes manufacturing lots to pass through the entire production process. h.) Bottleneck: a phenomenon where the performance or capacity of...

Words: 1331 - Pages: 6

Wk 4 Hw Problems

...WEEK FOUR HW PROBLEMS There are four problems, each of which is worth one point. 1. Five Proteen Bars and 7 Superdrinks total 1915 calories. Four Proteen Bars and 3 Superdrinks total 1155 calories. How many calories does one Proteen Bar have? One Superdrink? One Proteen Bar has 180 calories and one Superdrink has 145 calories. 2. A plane goes from A to B against the wind in 4 hrs and 30 minutes. It goes back again (WITH the wind) in 3 hrs and 40 minutes. It is 400 miles from A to B. How fast does the plane fly in still air, and how fast is the wind? (Round to nearest hundredth.) The plane flies at 99.09 mph in still air and the wind is 10.2 mph. 3. You want 40 liters of 60% solution. How much 80% solution and how much 28% solution must you mix to produce that result? (Round to nearest hundredth.) In order to produce 40 liters of 60% solution I will need 24.62 liters of 80% solution and 15.38 liters of 28% solution. 4. Seven curly fries and four plain fries cost $16.83. Five curlies and 12 plains cost $23.45. How much does one order of curlies cost? One order of plains? One order of curlies costs $1.69 and one order of plains costs $1.25. 5. Solve the following system of equations: 2X + 3Y = 29 X + 1.5Y = 8 The system of equations is inconsistent and has no solution....

Words: 254 - Pages: 2

Statistic for Business Hw

...QBUS 215 HW #1 Due 07/15/15 @7:55 am Name: ──────────────── Based on the content of the Online Detailed Examples presentations along with other online resources and your textbook, plus the posted set of solved problems, complete and fill in the blanks below. All questions are based upon the Required Textbook: Statistics for Business and Economics by Anderson, Sweeney and Williams, 11th Ed., 2012, Thomson/South-Western. Ch-3 ( Learning Objectives) 1. Understand the purpose of measures of location. 2. Be able to compute the mean, median, mode, quartiles, and various percentiles. 3. Understand the purpose of measures of variability. 4. Be able to compute the range, interquartile range, variance, standard deviation, and coefficient of variation. 5. Understand skewness as a measure of the shape of a data distribution. Learn how to recognize when a data distribution is negatively skewed, roughly symmetric, and positively skewed. 6. Be able to compute and interpret covariance and correlation as measures of association between two variables. Ch-5 (Learning Objectives) 1. Understand the concepts of a random variable and a probability distribution. 2. Be able to distinguish between discrete and continuous random variables. 3. Be able to compute and interpret the expected value, variance, and standard deviation for a discrete random variable. Ch-8: ( Learning Objectives: Only Section 2) 1. Know how to construct and interpret an interval estimate of a population mean and / or a...

Words: 1093 - Pages: 5

Hw 4(2)

...HW 4 International Economics, ECON 630 Due on Tuesday, August 11 @ 11:00pm PT (Total 50 points) 1. You notice in The Wall Street Journal that the interest rate in the U.S. money markets is 7.5 percent and the interest rate in London is 9 percent. Would you expect the pound to be at premium or discount? Why? (15 points) The pound would be at discount. Because there is difference between US interest rate and UK interest rate. And UK interest rate is higher than US interest rate. This difference will be minimized by the difference between the current spot rate and the forward exchange rate. 2. Why is relative purchasing power parity (PPP) more likely to hold in a hyperinflationary period than in a more “normal” period of price behavior? (15 points) In a hyperinflationary period, money supplies is excess and price rises rapidly. Home currency will depreciate obviously due to rapid changes of price level. In normal period, the price level and exchange rate change slowly. In a hyperinflationary period these two change relatively in coincidence which means PPP more likely to hold of price behavior. 3. In the portfolio balance model, what effect, other things equal, will a foreign government’s budget deficit financed by issuing bonds have on the home country’s currency value and why? (Assume a flexible exchange rate.) (10 points) If a foreign government issues bond, the risk premium will increase. And the rate of return abroad will...

Words: 414 - Pages: 2

Ais Hw Chapter 1

...Mariajose Anare ACG 4401 M & W August 31, 2015 Chapter 1 HW DQ1 The cost and benefits of information may be difficult to quantify as the book estates. And given the difficulty at times any organization may produce information that exceeds cost without realizing it until it too late. Producing information that is valuable but costly does not sound like a good idea, however there are times when organization are force by law to produce information regardless of the cost. For example the IRS mandates regular tax reports quarterly; this practice may cause the organization you spend more than the benefit they may obtain from the information. DQ2 The characteristics that make information useful could go both ways; it can be met simultaneously or one can hider another. For example when information is accessible to users, then it becomes verifiable because independent users can check it; when information is verifiable, then it is reliable because it can be trusted. Information that is relevant it’s usually understandable and presented at the right time. However there are times when a focus on one particular characteristic may lessen others. If the focus is to have a complete report, it may not necessarily be presented at the proper time. Therefore complete information may not be timely. Accessible information may not always be easily understandable making it unverifiable. Problem 4 1. Relevant – F. An accountant receivable aging report is used in credit...

Words: 599 - Pages: 3

Week 6 Hw

...Week 6 HW Journal Entry Date Debit Credit A. 12/31/2015 Bond Interest Expense 156,000 Premium on Bonds Payable 4,000 ($80,000 X 1/20) Cash ($4,000,000 X 8% X 6/12) 160,000 B. 1/1/2016 Bonds Payable 400,000 Premium on Bonds Payable 6,400 Common Stock 320,000 [8 X $100 X ($400,000/$1,000)] Paid-in Capital in Excess of Par 86,400 Total premium ($4,000,000 X .02) $80,000 Premium amortized ($80,000 X 2/10) 16,000 Balance $64,000 Bonds converted ($400,000 ÷ $4,000,000) 10% Related premium ($64,000 X 10%) 6,400 C. 3/31/2016 Bond Interest Expense 7,800 Premium on Bonds Payable 200 ($6,400 ÷ 8 years) X 3/12 Bond Interest Payable 8,000   ($400,000 X 8% X 3/12) 3/31/2016 Bonds Payable 400,000 Premium on Bonds Payable 6,200 Common Stock 320,000...

Words: 737 - Pages: 3

Acc 350 Hw 7

...Your names: ___________________ Class time: ___________________ ACC350 - HW #7 (Chapter 10) Solutions Wednesday, October 23, 2013 Multiple Choice Questions 1. CD Productions needs to know its anticipated cash inflows for the next quarter by month. Cash sales are 10 percent of total sales each month. Historically, sales on account have been collected as follows: 60 percent in the month of sale, 30 percent in the month after the sale, and the remaining 10 percent two months after the sale. Sales for the quarter are projected as follows: April, $120,000; May, $100,000; and June, $80,000. Accounts receivable on March 31 were $60,000. CD Productions would expect to have an accounts receivable balance on June 30 of a. $37,800 (90,000x0.1 (receivables from May sales) + 72,000x0.4 (receivables from June sales)). b. $42,000. c. $32,000. d. $28,800. 2. Which of the following changes would NOT change return on investment (ROI)? a. Decrease sales and expenses by the same percentage. b. Increase total assets. c. Increase sales dollars by the same amount as total assets. d. Decrease sales and expenses by the same dollar amount. 3. Beta Division had the following information: Av. operating assets in Beta Division $400,000 Operating income in Beta Division $50,000 Weighted average cost of capital 12% Minimum required rate of return 15% Operating Income Margin for Beta Division 20% What is the turnover ratio for...

Words: 1326 - Pages: 6

Hw 2 Operations Management

...HW 2 1. B. A-B-D-E-H C. 15 weeks, 1+4+2+5+3 D. E- 1 week, C – 1 week In each of the businesses listed they either use product or price to influence the demand. These companies use product differentiation in order to influence demand. The good and services provided by these companies are very similar so they have to set themselves apart from the rest. They have to try to make their similar products better than their competitors in the aspect of price and product difference. Most people will choose the cheaper company in the end because they are all about saving money. Banks: Banks all pay interest rates that are around the same, banks have to place their locations (example Chase in on campus in the book store) which makes it easier for the students to access that bank, therefore they will choose Chase that is in the bookstore because it is more convenient. Also some banks will advertise they have the lowest credit card interest rate which will bring customers around as well. Airlines: With airlines, generally all ticket prices will differentiate. If a person finds a cheaper ticket by a dollar or 2 they will go with that airline because you do not really have a big product difference with airplanes, people are more concerned about price., Cereal: Cereal manufacturers sometimes put prizes in their boxes that are geared towards children to sell the fact they are getting a prize makes the child want to eat that cereal therefore the parents......

Words: 381 - Pages: 2

Econ Hw 4

...HW 4 Solutions 2. a. Percentage change of exchange rate from 2009-2010: Canada=(0.9643-0.9225)/0.9225=4.53% Mexico=(0.0788-0.0756)/0.0756=4.23% China=(0.1473-0.1454)/0.1454=1.31% Japan=(0.0112-0.0105)/0.0105=6.67% b. Percentage change in the nominal effective exchange rate for the United States between 2009 and 2010: =(4.53%*36%)+(4.23%*28%)+(1.31%*20%)+(6.67%*16%)=(+)4.14% United States' effective exchange rate has depreciated by 4.14%. c. The value of U.S. dollar has depreciated by 4.14% against the basket. Compared with the change in the value of the U.S. dollar relative to the Mexican Peso, where U.S. dollar depreciated 4.23% against Peso, the 4.14% depreciation of the U.S. dollar against FX basket is smaller. The reason is that Mexico only take 28% of trade share of United States, there are also other trade partners whose currency also could affect the nominal exchange rate for U.S. For this question, U.S. dollar only depreciated 1.31% against Chinese yuan, which bring down the number of overall depreciation of U.S. dollar against foreign currency basket. 6. a. The investor's return on euro-denominated Dutch deposits is €1,000*(1+4.04%)=€1,040.4 b. Using forward cover, the euro-denominated return on British deposits is €1,000*(1.575/1.5)*(1+2%)=€1,071 c. Yes, there is an arbitrage opportunity because the euro-dominated return on British deposits is higher than that on Dutch deposits. The net...

Words: 1355 - Pages: 6