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zepelin [54]
3 years ago
10

The graphical user interface (GUI) was pioneered in the mid-1970s by researchers at:

Computers and Technology
2 answers:
olasank [31]3 years ago
5 0
IBM is the correct answer
Fofino [41]3 years ago
5 0

Answer:

its C actually

Explanation:

C) Xerox plus i had a quiz

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Stephen needs to insert a field into a building block that will contain variable data. Which keyboard shortcut can he use to tog
STatiana [176]

Answer:

Alt + F9

Explanation:

The Keyboard shortcut that Stephen can use use to toggle between data and the field codes is Alt + F9. This is in regards to Microsoft Word Fields for both Windows and Mac operating systems. Although ALT + F9 will toggle between these two but for all the fields within the document. If you want to toggle between a single or various fields it would be Shift + F9.

8 0
2 years ago
A degree-constrained minimum spanning tree is a minimum spanning tree (MST) where the maximum vertex degree is limited to a cert
Bingel [31]

Answer:

A spanning tree is a subset of Graph G, which has all the vertices covered with minimum possible number of edges. Hence, a spanning tree does not have cycles and it cannot be disconnected..

By this definition, we can draw a conclusion that every connected and undirected Graph G has at least one spanning tree. A disconnected graph does not have any spanning tree, as it cannot be spanned to all its vertices.

Spanning Trees

We found three spanning trees off one complete graph. A complete undirected graph can have maximum nn-2 number of spanning trees, where n is the number of nodes. In the above addressed example, n is 3, hence 33−2 = 3 spanning trees are possible.

General Properties of Spanning Tree

We now understand that one graph can have more than one spanning tree. Following are a few properties of the spanning tree connected to graph G −

A connected graph G can have more than one spanning tree.

All possible spanning trees of graph G, have the same number of edges and vertices.

The spanning tree does not have any cycle (loops).

Removing one edge from the spanning tree will make the graph disconnected, i.e. the spanning tree is minimally connected.

Adding one edge to the spanning tree will create a circuit or loop, i.e. the spanning tree is maximally acyclic.

Explanation:

8 0
3 years ago
Elliott is trying to normalize a database that he has designed. Which is not one of the elements of 1NF or 2NF?
muminat

Answer: I think it’s D

Explanation: the rest apply to the the rules of 1NF and 2NF

5 0
2 years ago
Write a C++ line of code to declare a variable of type “double” that signifies the average of student grades, then initialize th
mamaluj [8]

The line of code required to assign a value of 50.00 to a variable of double data type in C++ can be written thus :

  • double average_student_grade = 50.00;

The declaration follows the format :

  • Data type
  • Variable name
  • Value

The data type which is first stated, the double data type are floating point (have decimals) numbers which have 64 bit precison(a precison of 15 decimal digits) as opposed to floats which have 32 bit precison (a precison of 7 decimal digits).

The variable name is the name to hold the value of average grade. This name depends on the preference of the programmer. However. It is advisable that variable names are relatable.

Therefore, variable declaration in C++ may follow the format data type then variable name then value.

Learn more :brainly.com/question/12908743

4 0
1 year ago
Waht is the difference between authorization and access control? Access control specifies what a user can do, and authorization
spayn [35]
<h2>Answer:</h2>

Authorization specifies what a user can do, and access control enforces what a user can do.

<h2>Explanation:</h2>

Authorization is simply granting access to an authenticated user of an application. It specifies what a user can and/or cannot do. For example, for a user to access their banking details in an online banking service, they have to be authorized by first authenticating them to prove their identity. Another example is in an organizational system where some users (normally called admins) can access certain database info whereas some other users (normally called the regular users) cannot.

Access control is used to enforce the policies dictated by authorization. In other words, access control enforces the policy of what a user can and/or cannot do. Access control makes authorization possible. It is sometimes called privileges or permissions. For example, the <em>security tab </em>in the operating system of Windows, allow to set access privileges for certain files and/or folders. Another example is in an organizational system where some files on the organization's server are configured in such a way that access to it is restricted and dependent on some further authorization.

5 0
3 years ago
Read 2 more answers
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