CS101 Midterm Short Questions

Short Question by

What is the key feature of object-oriented design?

Answer: ANSWER:

The key feature of object-oriented design is that it treats everything as object having properties and methods. These objects are separately treated and designed and once designed it can be used in any other system. So once designed can\\\\\\be used many times.

Write one purpose of using spreadsheets?

ANSWERS:

Purpose of spreadsheets is that it can do calculations on data accurately.

Write down two advantages of writing Pseudo Code

Answers:

The advantages of pseudo code are:

It is quite similar to human language so easy to understand. It is close to real code so easy to write real code from it.

How can we calculate total number of rows in the truth table?

The formula for calculating number of rows in truth table is 2n

Where n = number of inputs

Differentiate between Vector graphics and Bit-mapped graphics.

VECTOR GRAPHICS

BIT MAPPED IMAGES

1. Treat everything as an object
2. Is resolution independent
3. Relatively small size
4. Example: Corel Draw 1. Treats everything as a bit map. 2. Resolution dependent 3. Large files 4. Example: Microsoft Paint

Write differences between Shareware and trail ware software.

SHAREWARE

TRIALWARE

1. These are shared freely.
2. It is given without payment ahead of

time. 1. Software is offered for a trial period. 2. When the period is expired it is no more in use.

What is the problem with Brute Force Strategy approach?

A strategy in which all possible combinations are examined and the best among them is selected

What is the problem with this approach?

Doesn’t scale well with the size of the problem

How many possible city sequences for n=6? For n=60? For n=600?

What was the name of first computer in which binary numbers were used instead of decimal numbers?

The Atanasoff-Berry Computer was the world's first electronic digital computer. It was built by John Vincent Atanasoff and Clifford Berry at Iowa State University during 1937-

42. It incorporated several major innovations in computing including the use of binary

arithmetic, regenerative memory, parallel processing, and separation of memory and computing functions.

How can we say that JavaScript is Not Object-Oriented language?

It is so because it lacks two key features:

A formal inheritance mechanism

Strong typing

Nevertheless, it does include many key concepts that are part of almost all object-

Oriented languages, and therefore is referred as an object-based language

List down the names of any three parameters on which we analyze an algorithm?

Analysis in the context of algorithms is concerned with predicting the resources that re

Requires:

Computational time Memory Bandwidth Logic functions

What is function of Goal Seek command in Excel?

Answer: When you use the Goal Seek command, Excel changes the value in one cell until the value in a second cell reaches a number that you desire. For instance, if you had a spreadsheet that calculated profit for the Bola eService from a variety of inputs, including employee numbers, expenses, products sold, price of products, you might use goal seek to define your break-even price of products. You would tell the computer to change price of products until Profit was zero (breakeven), and you would do that using Tools, Goal Seek.

What is the difference between Desktop Computer and Super Computer? Give at least three differences

Desktop Computer

Super Computer

1. These are generally consisting of a single processor

only, sometimes 2, along with MB’s of memory, and GB’s of storage

2. PC’s are used for running productivity applications
3. Workstations cost a few thousand dollars; PC around a

$1000. 1. These are generally consisting of a single, double or many processor. 2.A supercomputer is typically used for scientific and engineering applications that must handle very large databases or do a great amount of Computation (or both). 3. Normally Its value is very high.

What makes System Software different from Application software? Explain the attributes of

Good application software. Please write down the concise and to the point answer. (4+4)

Answer · System Software · Application software

1. System software is responsible for controlling,

integrating, and managing the individual hardware components of a computer system.

2. It is talk directly to hardware.

Example: operating system, device driver etc. 1. Programs that generally interact with the user to perform work that is useful to the user.

2. It is directly with system software. 3. Example: MS word etc.

Convert the following numbers from decimal numbers into binary numbers:

Answer

a)

1. 24

Answer = 11000

2. 55

Answer = 110111

3. 84

Answer = 1010100

b) X, Y is Boolean variables. Determine the truth tables for the following combinations:

(x.y)