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3 years ago

Wireless networks are the most difficult type of network to set up true or false

Computers and Technology

1 answer:

Elden [556K]3 years ago

5 0

Answer:

The answer is "False".

Explanation:

Wireless networks are a network, set up to communicate between computers and other network devices using a radio signals frequency. It is also sometimes referred to as a WiFi or WLAN network. Due to the easy set-up and cabling feature, this network is now popular.
A Wireless network uses a signal that is transmitted and decoded by a wireless router. The information is then sent to the internet via a wired Ethernet connection.

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should variables that contain numbers always be declared as integer or floating-point data types? why or why not? name potential

Stells [14]

No, it is not necessary that variables that contain numbers should always be declared as integer or floating-point data types.

It is not necessary that variables that contain numbers should be declared as integer and floating point data types. Because number can be declared with different data types. As we know that data type is a vital aspect in programming. It describes the type of a value that is contained in a variable. It is the data type based on which memory is allocated to a number or any type of variables.

Numbers can be whole decimal/fractional, signed, unsigned, small, and long. Simply, they exist in a variety of values. According to their values range, the amount of memory is reserved.

Different programming languages offer different data types to store numbers, depending on their types and size. Let’s consider some examples of data types used in programming languages in order to declare variables holding numbers.

In Python int, float, and complex are the data types used to declare number type variables.

SQL uses INTEGER, SMALLINT , BIGINT , NUMERIC() , and DECIMAL() data types for numbers.

To deal with number type variables, Java has six predefined data types, such as int, long, short, byte, float, and double.

JavaScript uses a single data type called 'number' to declare numbers.

In C++, two fundamental data types, int and float, are used to represent numeric variables. But C++ is not only limited to these two data types. The data type char can also store numbers. Other data types for declaring numbers as variables are derived from int, float and char, such as short int, long int, signed int, unsigned int, double, long double, signed char, unsigned char etc. etc.

So in concluding remarks, declaring a number type variable is not only limited to using integers and floating-points data types. Rather it entirely depends on the respective programming language, and size and type of the number to be stored in the variable.

You can learn more about data types at

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6 0

2 years ago

Name three actions you should take if you believe you’ve been victimized by crimeware or online fraud

allochka39001 [22]

Try restating system software and delete anything that may have caused the online fraud then remove all credit cards and info on the device. Tell the authorities and get a new device and email with a software protector. When doing this DO NOT DO WHAT YOU ORIGINALLY DID TO GET VICTIMIZED AND (DON'T TRY TO SIGN INTO YOUR PREVIOUS EMAIL ON A NEW DEVICE)

4 0

3 years ago

Read 2 more answers

Peter Chen developed ERDs in 1976. Since then Charles Bachman and James Martin have added some slight refinements to the basic E

shusha [124]

Answer:

Check the explanation

Explanation:

In RDBMS relational database, the keys play an essential role in making the database reliable and relational in which two or more relations (tables) can be divided into a range of relations with the use of diverse types of keys due to which the redundancy decreases and flexibility of data storage increases.

The following are the usage of keys in a database:

It helps in identifying a specific record that is present in the table.

It is used in minimizing the redundancy from the tables.

It is used in removing the multi-valued attributes from the relations.

it helps in connecting one table with others by using Foreign keys.

It is used in maintaining the uniqueness of the data stored in the database.

It helps in identifying the relationship between two or more tables.

Types of keys in a relational database:

PRIMARY KEY: It helps in identifying each record uniquely due to which the redundancy of data can be minimized.

FOREIGN KEY: It is a kind of referenced key that helps in making a relationship between two or more tables. It helps in fetching records by combining two or more tables with the help of different joins.

SUPER KEY: It is a combination of two or more keys that can be selected as primary. It may contain those columns which have repeated values.

COMPOUND KEY: It is a combination of those columns which may not be used independently as the identification of unique records but their combination does.

CANDIDATE KEY: It is a kind of a super key that does not contain repeated records. A primary key can be chosen from candidate keys.

8 0

3 years ago

What is the first step that a server should take after assessing a situation and deciding to discontinue service to a guest?

Illusion [34]

An alcohol server attending to a client in a restaurant may decide to discontinue services for many reason. When the decision to discontinue service has been made, the server should IDENTIFY A BACK UP CO WORKER who will support in the situation, in case things get out of hand. So, in this situation, the first thing to do is to SEEK FOR ASSISTANCE AND DISCONTINUE SERVICE.

8 0

3 years ago

use this forum to discuss homework and material related to recursion and recurrence relations. some prompts for discussion: for

olchik [2.2K]

Recurrence relations can be resolved using the Recursion Tree Method. Recursive trees are created using this method from a recurrence relation.

Each node reflects the expense incurred at different recursive levels. The overall cost is calculated by adding the costs from each level.

20 nodes at level 0 are equal to one.

21 + 2 Equals number of nodes at level 1.

Number of nodes at level 2log10/9(n), which is equal to nlog10/9 (2)

nlog10/9(2) x T(1) = nlog10/9(2) x 1 = nlog10/9 Cost of subproblems at level log2(n) (last level) (2)

Step 4: Add up all of the levels' costs in the recursive tree.

T(n) = n times (number of levels - 1) plus the cost of the last level.

= log10/9(n) times + (nlog10/9(2)) = n + n + n + —-

= (nlog10/9(2)) + nlog10/9(n)

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6 0

1 year ago