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MariettaO [177]
3 years ago
7

Which of the following statements is false? A.The concepts of icons, menus and windows were originally developed by Xerox PARC.

B.Windows is an open source operating system. C.The software that contains the core components of the operating system is called the kernel. D.Linux source code is available to the public for examination and modification.
Computers and Technology
1 answer:
Fudgin [204]3 years ago
8 0

Answer:

(b) Windows is an open source operating system (<em>This is not correct</em>)

Explanation:

Option a is <em>correct</em> because Xerox PARC(Palo Alto Research Center), which is a subsidiary of the Xerox corporation, has been greatly responsible for invention and development in modern computing devices. Some of these developments are in Ethernet and graphical user interface (making use of menus, icons e.t.c).

Option b is <em>not correct</em> because Windows Operating system is not an open source operating system. Open source OS means users can interact with the driving code of the OS and make modifications. Windows does not support this feature. Operating systems that are open source include Linux and OpenSolaris.

Option c is <em>correct</em>. An operating system has two main components - the kernel and the user interface. The core component of an operating system is the Kernel as it interacts directly with the hardware and manages system resources. The user interface on the other hand allows users to interact with the kernel of the operating system using texts and/or graphics as commands.

Option d is <em>correct</em>. Linux operating system is an open source OS. Therefore, the source code is made available to the public for examination and modification.

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loris [4]

Answer:

B, Mini-ITX

Explanation:

According to my research on information technology and it's hardware, I can say that based on the information provided within the question the technician is most likely to use a Mini-ITX case. This is because an HTPC is a A Home Theater PC which does not need all the hardware that a regular PC needs, just the minimum specs, and these devices are usually hidden away in a drawer or behind the TV. Therefore he needs the smallest PC case which is a Mini-ITX.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

4 0
3 years ago
​___________ are taking over as the primary communication platform for many business professionals. A. desktop computers B. lapt
Komok [63]

Answer:

Mobile devices .

Explanation:

For several industry professionals, mobile phones take over as the main communication channel because mobile devices are portable and easy for the purpose of communication or handle. With the help of mobile devices, they can easily interact with their employees, seniors, clients and other persons from which they want to interact or communicate.

  • Option A is not true about the scenario because it is not portable and it is not easy to handle as compared to the mobile devices. So, it's not the primary mode of communication.
  • Option B is not true about the scenario because it is portable but as compare to the mobile device, mobiles are more flexible, portable for primary communication.
  • Option c is not completely true because the professionals give primary preference to the calls than emails.
8 0
3 years ago
Read 2 more answers
Write an algorithm to settle the following question:
Vesnalui [34]

Answer:

<u>algorithm</u>

original = float(raw_input("Enter initial balance: "))

interest = float(raw_input("Enter promised return: "))

expenses = float(raw_input("Enter monthly expenses: "))

interest = interest / 100 / 12

month = 0

balance = original

if balance * interest - expenses >= 0:

print "You don't need to worry."

else:

while balance + balance * interest - expenses >= 0: # negation of the if condition

balance = balance + interest * balance # in one month

balance = balance - expenses

month = month + 1

print month, balance

print month / 12, "years and", month % 12, "months"

6 0
3 years ago
Data hiding, which means that critical data stored inside the object is protected from code outside the object, is accomplished
algol [13]

Answer:

Option (D) using the private access specifier on the class fields

Explanation:

  • The private access modifier can be used to hide the data.
  • Methods and data variables ( fields ) can be declared with the private access modifier.
  • Data hiding is a OOPS Concept which can be achieved with the private keyword (private access modifier).
  • The access modifiers are of types Public, Private, Protected and Default ( no access modifier - no need to explicitly specify the default keyword).
  • Data hiding means to hide the data, the data is contained in the class variables.So, option (d) using private access modifier on the class fields is correct option.
  • Option (A) is wrong as the using the public access modifier doesn't hide anything. It is public and is visible to the public.
  • Option (B) is wrong as using the private access modifier on the methods means it is hiding the implementation of the methods not the data.
  • Option (C) is wrong as using private access modifiers on class definition means making the classes not visible to other classes it doesn't mean data hiding as the data is contained in the class variables.
7 0
3 years ago
"What is the running time of HEAPSORT on an array A of length n thatis already sorted in increasing order?
Harrizon [31]

Answer:

The answer to this question is O(NlogN).

Explanation:

The time complexity of Heap Sort on an array A is O(NLogN) even if the array  is already sorted in increasing order.Since the Heap Sort is implemented by creating the heap from the array and then heapifying and then repeatedly swapping first and last element and deleting the last element.The process will be done for the whole array.So the running time complexity is O(NLogN).

5 0
4 years ago
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