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eduard
3 years ago
5

Select the correct answer. Which input device uses optical technology?

Computers and Technology
1 answer:
daser333 [38]3 years ago
8 0

Answer:

barcode reader is the correct answer

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Consider the code below. Note that the catch statements in the code are not implemented, but you will not need those details. As
Dmitriy789 [7]

Missing Part of Question

An exception raised by the instruction in i3 would be caught by the catch statement labeled?

Answer:

e3 and e4.

Explanation:

The instruction tag i3 points to the following code segment

a[++i] = (double) (1 / x); // i3

The code segment above performs arithmetic operation (double)(1/x)

And then assigns the value of the arithmetic operations to an array element a[++I]

It's possible to have one or both of the following two exceptions.

1. Error in Arithmetic Operation

2. Index of Array out of bound

These are both represented in exception tags e3 and e4

catch (ArithmeticException ex) {...} // e3

catch (ArrayIndexOutOfBounds ex) {...} // e4

Exception e3 can arise when the program try to carry out invalid arithmetic operation.

For instance, 1/0 or 0/0.

This will lead to ArithmeticException to be thrown

Exception e4 can arise when the program tries to assign values to an index that's not in an array.

Say, the total index in a given array a is 5.

The index of this array is 0 to 4; i.e. a[0] to a[4]

The moment the program tries to assign values to array element other than the ones I listed above (e.g a[5]) ArrayIndexOutOfBounds exception will be thrown

6 0
3 years ago
Whatis NOT a key factor while designing a website?
Vaselesa [24]

Answer: Complexity

Explanation: Web designing is referred as the designing of a web page for different purposes such as online business,etc. The most important factor is usability for the improvement in performance of any site and keeping it successful.

It should be user friendly so that interaction and understanding between user and web page can easy.Consistency is also a feature which ensure that web page opened in any browser should have similar quick working.

But there should be no complexity present in the web design which can cause misunderstand with the user and functioning.

7 0
3 years ago
A python programmer is writing a function definition. What syntax should be used?
Kay [80]

Answer:

<u>Syntax of function in the Python Programming Language.</u>

def function_name():

   '''body of the function or code'''

#calling of the function

function_name()

Note: In Python Programming Language, Indentation is sensitive if you not focus on the indentation then, you program occurs an indentation error.

Explanation:

In Python Programming language, we can use the "def" keyword to define a function then we write the name of the function and then use parentheses for the argument list. "#" is used for the single-line comment and " ''' ''' " is used for the multiple line comment.

A function is the part or module of the program which provides users the feature of reusability of that code anywhere only by calling them.

8 0
3 years ago
What is the primary difference among a domain model, an analysis model, and a design model for the same project?
Aleks04 [339]

Answer:

The design model is the description of the model to be implemented, the analysis model is the model that links the design and the system or domain model while the domain model is the entire software implementation.

Explanation:

The domain model is the conceptual aspect of software engineering that comprises operational and data features. The analysis model is the schematic description of the system that links the design model to the system domain. The design model is also known as the object model as it shows an abstract representation of the implementation. It helps to test the quality of the software been developed.

8 0
3 years ago
Write a method that takes a Regular Polygon as a parameter, sets its number of sides to a random integer between 10 and 20 inclu
Fantom [35]

Answer:

Answered below

Explanation:

//Program is written in Java programming language

Class RegularPolygon{

int sides = 0;

int length = 0;

}

public void randomize(RegularPolygon polygon){

int randomSides = (int) 10 + (Math.random() * 20);

double randomLength = 5 + (Math.random() * 11);

polygon.sides = randomSides;

polygon.length = randomLength;

}

8 0
3 years ago
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