Shruti Speak's

According to Prof Bowley averages are statistical constants which provide an idea about the concentration of values in the central part of the distribution. The five common measures of central tendency are : 1. Mean [Airthmetic mean] 2. Median 3. Mode 4. harmonic mean 5. Geometric mean According to Prof. Yule following are the characterstics required to measure central tendency: 1. Central tendency should be rigidly defined 2. It should be comprehensive and easy to determine 3. Should be based on all observations 4. It should not be much affected by the fluctuation of sampling 5. It should not be affected by extreme values Let us talk about these distributions in detail: 1. Arithmetic mean: Arithmetic mean of a set of observations can be calculated as their sum divided by the number of observations In case f i is the frequency of variable x i then distribution becomes ' Properties of Arithmetic Mean 1. Algebric sum of deviations of a set of v

What is simulation? List a few advantages and disadvantages of simulation. Differentiate between the following: Continuous and Discrete Systems Static and Dynamic Systems Open and Closed Systems Deterministic and Stochastic activities Static Physical Models and Dynamic Physical Models Static Mathematical Models and Dynamic Mathematical Models Write short notes on Monte –Carlo methods M/M/1 model Continuous probabilistic distributions Binomial Distribution Bernoulli Distribution Exponential Distribution Poisson Distribution Erlang Distribution Log normal distribution Geometric distribution Hyper geometric distribution Normal distribution What is Discrete system simulation? Write short notes on GPSS. Explain at least 5 GPSS block-diagram symbols. What do you mean by Action Times and Succession of Events. Design a supermarket simulation model using GPSS symbols. Design a Telephone System simulation model using GPSS symbols. Writ

• E-Commerce : electronic commerce was meant for facilitation of commercial transactions electronically, using technology such as Electronic Data Interchange (EDI), Electronic Funds Transfer (EFT), etc • Models of e-commerce : B2B,B2C, C2B AND C2B • EDI: can be stated as collection of standard message formats to exchange data between organizations computers via any electronic service. • SET: is a standard protocol for securing credit card transactions over insecure networks, more specifically addressing transactions over Internet. Please note clearly, SET is not itself a payment system, but rather a set of security protocols • Merchant account: When you want to have credit card, you fill up form/details and submit same to financial institution, on similar lines when some want to start e-business/ online transactions (which need online transaction through credit, debit, charge cards), one must step up a merchant account.

In technical jargons testing is also popularly known as “AT”, i.e. acceptance testing. Success of your website depends on this factor in major way. You should do self (means self) check in order to cross validate, that all things are working properly, for e.g. - Forms filled by users is properly stored in database - Hyperlinks / associate links to work properly - Security related stuff, encryption/ SSL etc totally secure! - Make a accentuate test, to check who much load website can carry Maintenance is ongoing endeavor, which will go long way. After website is through with testing and becomes online, it becomes your moral responsibility to nurture this “new kid on the block”. One has to constantly monitor traffic and evaluate web site activities. Remember most of knowledgeable visitors, check first thing while visiting website is “when it was last updated”, it gives impression that how serious/updated seller is about business ! Also, it’s extremely vital to be innovative for

Why you want to build e-commerce site Not only with e-commerce website, but one should always ask himself/herself during start of new project/process/business, why we are doing this adventure. As everything in today’s fast moving world is linked to TEM (time/energy/money), one should take every step to avoid landing into pitfall! Now let’s spend a minute focusing on e-commerce stuff. Before jumping into, this new adventure, its good to have quick look on following FAQ i) What’s wish list on products/services? ii) Should allow customers to order products/services on the fly iii) Technical support for products/services iv) How will be advertise our products/services and website itself? v) Collect information about current and potential customers vi) Skilled/ technical Manpower requirement for running show vii) Build e-business image and brand viii) Also showcase links to related websites ix) Capex and opex calculations ? What will be website/portal structure? Ne

Depending upon the purpose with which one is opening a website he may needs various tools for conducting online business venture. Here, is a quick check list for the same: a. Website needs to be designed in house or not? In case website needs to be designed in house one needs to check for following things: You need to get experience / training in Web designing. You may opt to use a template /wizard-based tools or hire a designer for the same. A good computer having plenty of RAM and hard drive space (6 GB minimum) Need to have a web designing software which can be either WYSIWYG (what you see is what you get) or a text editor (use this in case you know html) A scanner or digital camera for collecting photos of product or service. Image editing software for editing images and illustration software for creating graphics Any FTP software like CuteFTP for r uploading files to the Web site b. Website needs to sell products online? In case website is to be used

1. Explain in brief, what is SET? 2. SET is a protocol, true/false? 3. What is dual signature?