Abstraction refers to the process of removing elements of a code or program that are irrelevant or distract from more important elements.
What are the abstractions OS provides?By virtualizing the CPU, the operating system provides this abstraction. By running one process, then stopping it and starting another, and so on, the operating system can create the illusion of many virtual CPUs when there is only one physical CPU (or a few).A memory abstraction is a layer of abstraction between program execution and memory that provides a different "view" of a memory location depending on the execution context in which the memory access is performed.Many operating systems include a hardware abstraction layer, which eliminates the need to modify the OS kernel in order to run programs on computers with different hardware architectures. It is a device driver that allows programs to connect to hardware peripherals through a consistent interface.To learn more about abstraction refer to :
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if a file with the specified name already exists when the file is opened and the file is opened in 'w' mode, then an alert will appear on the screen.
On the off chance that a document with the predetermined name as of now exists when the record is opened and the document is opened in 'w' mode, then, at that point, an alarm will show up on the screen. A piece of data is copied into the program when it is read from a file. When a file is closed, the program and the file lose communication.
What is the name of the procedure for obtaining data from a file?In figuring, information recuperation is a course of recovering erased, out of reach, lost, defiled, harmed, or designed information from optional capacity, removable media or records, when the information put away in them can't be gotten to in a standard manner.
Which four kinds of data recovery are there?recovery of logical data.Physical Recovery of DataRecovery of Data Right AwayContinuous security for data.To learn more about Recovery of Data here
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we don't need multimedia software to operate multimedia software. true or false
Answer:
False
Explanation:
Multimedia software typically requires some sort of software to operate and display the multimedia content. Without a software program, it would be difficult or impossible to view or interact with multimedia content.
You're troubleshooting a computer running Windows 10. The operating system has halted and a blue screen has been displayed on the monitor with an error message. Which of the following is the MOST likely first step that should be taken in troubleshooting the issue?
Answer:
Search for the error in Microsoft's knowledge base or using an internet search engine
Explanation:
is the logical topology is the arrangement of cables net work devices and end systems
The logical topology of a network is the path through which data is transferred.
What is logical topology?A logical topology is a networking concept that defines the architecture of a network's communication mechanism for all nodes. The logical topology of a network can be dynamically maintained and reconfigured using network equipment such as routers and switches.A logical topology describes how devices appear to the user to be connected. A physical topology describes how they are physically connected with wires and cables.Broadcast (also known as bus) and sequential are the two logical topologies (also known as ring). Every message sent over the network is received by all devices in a broadcast topology.The logical topology is used to create a path for signals to travel through the network. It employs network protocols to define the path for packet transfer. The most typical example of network protocol is ethernet protocol.To learn more about topology refer to :
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Consider the following incomplete code: public class Test { public static void main(String[] args) { System.out.println(f(5)); } public static int fint number) { // Missing body } } The missing method body should be A) return "number"; B) System.out.println(number); C) System.out.println("number"); D) return number;
A return statement : return "number"
Explanation:An int is the specified return type for the method f. After performing whatever purpose it was intended for, this is what the method's body lacks.
Let's assume that the method returns the square of any value passed as an argument.
The Method f is declared to return an int.
This is what is missing in the method's body after doing whatever its function is.
Let's assume that the method returns the square of any value passed as an argument, then the complete code will be:
public class Test
{public static void main(String[] args)
{System.out.println(f(5));}
public static int f(int number)
{return (int)Math.pow(number,2);}}
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which of the following cctv types would you use in areas with little or no light? answer a camera with a high lux rating ptz c-mount infrared
Would you employ low- or no-light cctv types with infrared technology answer an infrared ptz c-mount camera with a high lux rating.
What is the purpose of a CCTV camera?To maintain high security and optimum safety, it is important to get a clear picture of everyone who enters and exits. If video from these cameras needs to be shown in court, the user can zoom in for more clarity. They are excellent for catching wrongdoing.
What is CCTV's complete name?Closed Circuit , or CCTV, is a modern technology that consists of a collection of digital video cameras with the purpose of monitoring specific situations.
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Assign sub_lyric by slicing rhyme-lyric from start_index to end_index which are given as inputs. Sample output with inputs: 47 COW 1 start_index - int(input) 2 end_index - int(input) 3 rhyme_lyric - "The cow jumped over the moon.' 4 sub_lyric - rhyme_lyric Your solution goes here we 5 print(sub_lyric)
The input values for start_index and end_index must be integers.
To clip rhyme_lyric from start_index to end_index and assign sub_lyric you can use the following code:
start_index = int(input("Please enter a starting index:
"))
end_index = int(input("Please enter the end index:
"))
rhyme_lyric = "A cow jumped over the moon."
sub_lyric = rhyme_lyric[start_index:
end_index]
print(sub_lyric)
The input values for start_index and end_index must be integers. rhyme_lyric is the string you want to cut. sub_lyric is assigned the cut portion of rhyme_lyric. You can print the sub_lyric to see the output.
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