Data Structure - Assignment Solution by VUsolutions

SYMBOL POSTFIX STACK 3 3 ↑ 3 ↑ 2 3 2 ↑ + 3 2 ↑ + 5 3 2↑5 + * 3 2↑5 + * 4 3 2↑5 4 + * ↑ 3 2↑ 5 4 + *↑ 3 3 2↑5 4 3 + *↑ - 3 2↑5 4 3↑*+ - 18 3 2↑5 4 3↑*+18 - / 3 2↑5 4 3↑*+18 9 -/ 9 3 2↑5 4 3↑*+18 9/- INPUT OPERAND1 OPERAND2 VALUE STACK 3 3 2 3 2 ↑ 3 2 9 9 5 95 4 9 5 4 3 9 5 4 3 ↑ 4 3 64 9 5 64 * 5 64 320 9 320 + 9 320 329 329 19 329 18 9 329 19 9 / 18 9 2 329 2 - 329 2 327 327

2)

Indorder:

1,2,3,4,5,6,7,8,9,10,11,12,13,14,18

Postorder:

2,1,6,7,9,8,5,11,10,12,4,3,18,14,13

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IT430 assignment # 3 Ecommerce by VUsolutions

SOLUTION

DSA/DSS

The Digital Signature Standard (DSS) was developed by the U.S. National Security Agency and adopted as a Federal Information Processing Standard (FIPS) by the National Institute for Standards and Technology. DSS is based on the Digital Signature Algorithm (DSA). Although DSA allows keys of any length, only keys between 512 and 1,024 bits are permitted under the DSS FIPS. As specified, DSS can be used only for digital signatures, although it is possible to use some DSA implementations for encryption as well.

RSA

RSA is a well-known public key cryptography system developed in 1977 by three professors at MIT: Ronald Rivest, Adi Shamir, and Leonard Adleman. RSA can be used both for encrypting information and as the basis of a digital signature system. Digital signatures can be used to prove the authorship and authenticity of digital information. The key can be any length, depending on the particular implementation used.

Elliptic curves

Public key systems have traditionally been based on factoring (RSA), discrete logarithms (Diffie-Helman), and the knapsack problem. Elliptic curve cryptosystems are public key encryption systems that are based on an elliptic curve rather than on a traditional logarithmic function; that is, they are based on solutions to the equation y2 = x3 + ax + b. The advantage to using elliptic curve systems stems from the fact that there are no known subexponential algorithms for computing discrete logarithms of elliptic curves. Thus, short keys in elliptic curve cryptosystems can offer a high degree of privacy and security, while remaining easily calculatable. Elliptic curves can be computed very efficiently in hardware. Certicom (http://www.certicom.com) has attempted to commercialize implementations of elliptic curve cryptosystems for use in mobile computing.

Advantages for Public Key Encryption


Two of the most common uses for public key cryptography are encrypted messaging and digital signatures:

With encrypted messaging, a person who wishes to send an encrypted message to a particular recipient encrypts that message with the individual's public key. The message can then be decrypted only by the authorized recipient.

With digital signatures, the sender of the message uses the public key algorithm and a private key to digitally sign a message. Anyone who receives the message can then validate the authenticity of the message by verifying the signature with the sender's public key.
______________________________________________________

As you have studied some popular public key algorithms:

1) DSS – Digital Signature Standard based on DSA (Digital Standard Algorithm) –
2) RSA
3) Elliptic Curves

Question: [10 Marks]

You are required to provide answers for the given below questions:

1) Differences among the above listed Public Key Algorithms.
Note: One of the differences must contain information that describes the “practical usage” of the particular Algorithm currently.
2) Advantages and disadvantages for the most common and efficient public key
Algorithm applied now a days.

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MKT610 - Customer Relationship Management (QUIZ) Solutions from VUsolutions

SOLUTION....

Question # 1 of 10

Which of the following is an element of an organization’s internal-environment? Select correct option:

Wholesalers

Retailers

Employees

Competitors

Question # 2 of 10

Which of the following refers to Companies often failure to predict changes, either slow or long range to at least calculate their impact on their product and customers? Select correct option:

Failure to obtain Senior Management Commitment

Poor Communications

Failure to Coordinate

Inability to Predict Environmental Reaction

A _____ is an organized collection of comprehensive information about individual customers or prospects. Select correct option:

Business database

Customer mailing list

Customer database

Marketing database

Supporting customers through the process of selecting, purchasing, and maintaining a product or service is known as: Select correct option:

Customer loyalty

Customer satisfaction

Customer retention

Customer services

All of the following statements are principles of communication, EXCEPT: Select correct option:

Communication is a system

Communication is static

Communication can be intentional or unintentional

Communication is a process

Operational customer relationship management supports which of the following function? Select correct option:

Front Office

Customer campaigns

Effective interaction

Data mining

Question # 10 of 10

which of the following is NOT a dimension of service quality? Select correct option:

Empathy

Assurance

Reliability

Competence

Question # 1 of 10

Customer Service Culture includes all EXCEPT: Select correct option:

Traits

Value

Norms

Behavior

Question # 2 of 10

Promoters are those customers who? Select correct option:

Use product occasionally

Use product when required

Recommend a company to others

Use product continuously

Question # 3 of 10

Companies can gain a strong competitive advantage through having better-trained people. This is known as: Select correct option:

Personnel differentiation

Product differentiation

Personnel training

Human resources parity

Question # 4 of 10

Which of the following is Not part of marketing mix? Select correct option:

Competitors

Pricing

Promotion

Product

Question # 5 of 10

how can complaints provide the firm with great value? Select correct option:

They provide a chance to prove the company is right

They can be a source of information for a company

Resolving those ties up important resources

They offer an opportunity to shed bad customers

Question # 6 of 10

Marketing relationships are: Select correct option:

Intensely personal, like human relationships

Intended to deliver short-term customer satisfaction

Intended to deliver long-term customer satisfaction

The most important element of the marketing mix

Question # 7 of 10

Which of the following is a special human trait that we need to sharpen and use very often in CRM? Select correct option:

None of the given options

Foresee

Forecast

Forecast and foresee

Question # 8 of 10

Horizon cat food mailed a packet of catnip seed to every person who visited its website. Along with the catnip seed was a note that advised consumers to visit www. horizon.com if they wanted to create a cat-friendly garden. This illustration is the best use of which concept for approaching prospect customer? Select correct option:

Print advertising

Direct marketing

Personal selling

Public relations

Question # 10 of 10

Which one of these is NOT the major area on which customer relationship management focuses? Select correct option:

Expansion of customer base

Reduction of advertising costs

Gaining new customers, no focus on existing ones

Personal information gathering and processing

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Assignment No. 3 CS-507, VUsolutions

Assignment Topic:

 The topic of the assignment is System Design. 

Objective:

The objective of this assignment is to enforce students to evaluate and research System Design

 CS-507 Assignment # 3, No. 3:      

Discuss System Design to share your views for the following points: 5 marks for each point

1. Introduction

2. Components of System Design.

3. Purpose of Designing file or database

4. Designing User Interface.

 ____________________________________

PLEASE SEE THE FOLLOWING MATERIAL FOR YOUR KIND HINTS, JUST GET THE IDEA & PREPARE URSELF. BEST OF LUCK.. VUsolutions.

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Spring 2009, CS-507 Assignment No. 3

Discuss System Design to share your views for the following points: 5 marks for each point

1. Introduction

The purpose of elaborating the concept of decision making in the context of IS was to make you realize the importance of the fact that, Information system must support the managers for timely and effective decision making. While designing the information system, output, in terms of suitable reports is essential to analyze, highlight and bring to attention situations that may require decision making. The top manager looks for value addition to his/her knowledge of business operation.

2. Components of System Design.

The major components of system design are:

1. • Designing usable and complete input
2. • Designing well defined and usable output with flexibility to redefine presentation of outputs in any form.
3. • Designing file or database
4. • Designing user interface (input screen as it would be seen by the user)


3. Purpose of Designing file or database

System design is to deliver the requirements as specified in the feasibility report. The main objectives of the design are
1.Practicality
2.Efficiency
3.Cost
4.Flexibility
5.Security

System design contains Logical Design & Physical Designing; logical designing describes the structure & characteristics or features, like output, input, files, database & procedures. The physical design, which follows the logical design, actual software & a working system there will be constraints like Hardware, Software, Cost, Time & Interfaces.

The processing techniques are
> Batch Processing
> Real-time
> Online
> Combination of all

4. Designing User Interface.

Designing user interface
The design of what the user sees on the screen, that is, the interface, while entering data should be such that the user is familiar with. The information should be entered in a logical sequence e.g., if a user wants to add an employee to the employee’s master file, the information may be entered in the following sequence:

• Employee ID, which can either be
• Generated automatically by the system, or
• Entered manually by the user
• Name
• Address
• Contact information
• Next of kin
• Grade
• Designation
• Salary Details

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