The goal of database technology's development was not to make it necessary for programmers to create every capability for handling files.
What exactly is data management, and why is it crucial?Industry Editor: Craig StedmanJack Vaughan Data management refers to the procedure of consuming, storing, organizing, and managing the data produced and gathered by an organization. The deployment of IT systems that support business applications and offer analytical data to aid in operational decision-making and strategic planning by corporate executives requires effective data management as a key component.
What is SQL, or Structured Query Language?Almost all relational databases employ the programming language SQL for access control, data definition, and querying. Oracle was a key component of the original SQL development at IBM in the 1970s.
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Which of the following is the correct statement to return a string from an array a of characters?
A. toString(a)
B. new String(a)
C. convertToString(a)
D. String.toString(a)
The following is the appropriate syntax to extract a string from an array of characters named New String(a).
Which of the following describes the action of directly assigning a value of a primitive data type to an object wrapper?The process of turning a primitive value into an object of the relevant wrapper class is referred to as autoboxing. Changing an int to a class of integer, for instance.
Which of the following statements uses Java to build a string?by a new word: The "new" keyword is used to construct Java Strings. Consider this: String s = new String ('Welcome'); Two objects are created (one each in the heap and the String pool), and one reference variable is also created, with the variable "s" referring to the heap object.
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Codewriting Python 3 main.py3 Saved def solution (blocks, height): You are given array of integers called blocks . Each of the values in this array represents the width of a block - the ith block has a height of 1 and a width of blocks[i] (i.e. it's a 1 x blocks (1) block). You want to pack all the given blocks into a rectangular container of dimensions height x width , according to the following rules: . Place blocks into the container row by row, starting with block . For each row, place the blocks into the container one by one, in the order they are given in the blocks array. • If there is not enough space to put the current block in the current row, start filling the next row. You are given the value height of the rectangular container. Your task is to find the minimal possible width of a rectangular container in which all blocks can fit. Find and return this minimal possible width value. TESTS CUSTOM TESTS RESULTS O RUN TESTS NOTE: The blocks cannot be rotated. A Tests passed: 0/26. Syntax error. Example Test 1 . For blocks - [1, 3, 1, 3, 3] and height - 2. the output should be solution (blocks, height) - 6 Input: blocks: [1, 3, 1, 3, 3] height: Here's how the blocks should be packed in a container size 2 X6 6 Expected Output: LILL-HD-T.
The minimal possible width of a rectangular container in which all blocks can fit is print(solution([1, 3, 1, 3, 3], 2)) #test case
def solution(blocks, height): #function definition
width = max(blocks) #at first width is initialzied with max width of block in blocks list
while(1): #loop repeats until correct width is found
temp = [] #list to store the blocks that are placed succesfully
x = [] #a list of size height is declared to store the blocks of each row
for i in range(height):
x.append(0) #fill the list x with zeroes
j = 0 #j is initialzied to zero
for i in range(len(blocks)): #for each block present in blocks list
if(x[j] + blocks[i] <= width): #if current block can be placed in jth index
x[j] += blocks[i] #then it is added
temp.append(blocks[i]) #and as it is added to x, we can add that to temp also
else: #else
j += 1 #go for next index i.e., increment j by 1
if(j < len(x) and (x[j] + blocks[i] <= width)): #check if current block can be placed
x[j] += blocks[i] #adds that to x
temp.append(blocks[i]) #and to temp also
else: #else if the capacity of rectangle exceeds
width += 1 #we increase the width by 1 and continue the above process again
break #break from this for loop
if(len(temp) == len(blocks)): #whenver temp and blocks are same, all blocks are placed succesfully
break #then we break from the while loop
return width #width is returned
print(solution([1, 3, 1, 3, 3], 2)) #test case
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Consider the advantages and disadvantages of using descriptive variable names versus short variable names when using text-based code.
The advantages and disadvantages of using descriptive variable names versus short variable names when using text-based code is given below
Advantages of descriptive variable names:
Descriptive variable names can make code easier to read and understand, especially for people who are unfamiliar with the codebase.Descriptive variable names can help to document the purpose and use of a variable within the code, making it easier for others to understand and maintain the code.Disadvantages of descriptive variable names:
Descriptive variable names can take up more space in the code, making it longer and potentially more difficult to navigate.Descriptive variable names may be less efficient to type, especially if they are very long.What is the short variable names about?The Advantages of short variable names:
Short variable names can make code more concise, which can make it easier to read and navigate.Short variable names can be easier to type, which can save time and reduce the risk of typos.Disadvantages of short variable names:
Short variable names can be harder to understand, especially if they are not intuitive or if they use abbreviations or acronyms that are not widely understood.Short variable names can make code less self-documenting, which can make it more difficult for others to understand and maintain the code.In all, the choice between using descriptive or short variable names will depend on the specific context and needs of the codebase. In general, it is important to strike a balance between readability and conciseness, and to choose variable names that are appropriate for the purpose and intended audience of the code.
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A new resident in Virginia desiring to register his / her vehicle must obtain a vehicle ____________ certificate and verification of the vehicle ______________ number.
The starting system enables the driver to switch on an electric motor, solenoid switch, wiring, and battery by turning the ignition key. The lighting, safety systems, and accessories are all powered by the accessory circuits.
What are danger lights used for?The danger lights on your car perform a crucial job in terms of safety. These lights serve as a warning to other vehicles when used properly. Most of the time, when you flash your danger lights, other drivers assume that your car is stationary and that they should avoid it.
What do yellow warning lights do?When driving on slick roads, yellow or amber lights frequently signal a lower-level hazard or warning, such as the activation of the traction control system. White, blue, and green lights just indicate the activation of a device, such as the headlights.
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Benchmark tests on competing products can be used to select ____. a. primarily hardware products b. primarily software products
It is possible to utilize benchmark testing to assess both software and hardware items. The greatest product reviews in technology journals assess multiple goods against predetermined criteria and list the benefits and drawbacks of each product.
What is benchmarking?Comparing company operations and performance metrics to industry benchmarks and other companies' best practices is the process of benchmarking. Quality, time, and money make up the three key measures.
Using a certain indicator (such cost per unit of measure, productivity per unit of measure, or cycle time of x per unit of measure,
Benchmarking is a technique for measuring performance that generates a metric of performance that is then compared to others (such as faults per unit of measure).
This management technique, usually referred to as "process benchmarking" or "best practice benchmarking,"
compares a variety of operational characteristics of an organization to best-practice firms, usually within a peer group created for the purpose of comparison.
Hence , It is possible to utilize benchmark testing to assess both software and hardware items.
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Tablets (e.g., iPads) and cell phones make extensive use of ________ to store the operating system and applications that are included with the device. RAM Optical memory Flash memory Cache memory
Tablets (e.g., iPads) and cell phones make extensive use of Flash memory to store the operating system and applications that are included with the device. Flash memory is used to store the operating system and applications on tablets and cell phones.
Flash memory is a type of non-volatile memory that is commonly used in mobile devices such as tablets and cell phones. It is used to store the operating system and applications that come pre-installed on the device. Unlike RAM, flash memory retains its data even when the device is powered off. It is also smaller, more durable, and more power-efficient than a traditional hard drive, making it a suitable choice for mobile devices that have limited space and battery life. Additionally, flash memory is re-writeable, so it can be used to store additional applications and data as the device's storage needs grow.
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A PC that you are investigating has an IP address of 10.1.1.23. Without any further information, which of the following can you conclude from this IP address assignment?
A. This is a LINKLOCAL network address assigned by Automatic Private IP Addressing.
B. The PC must be part of an enterprise level network.
C. The IP address was statically assigned
D. The PC is a LAN client not connected directly to the Internet.
This IP address assignment leads to the conclusion that the PC is a LAN client and not directly linked to the Internet.
Among the following, which one can be an IP address?An IP address is written as four digits separated by periods, using a 32-bit format. Every number is between 0 and 255. An IP address might be 1.160. 10.240, for instance.
Which of the following methods is used to give a device an IP address?Dynamically allocating an Internet Protocol (IP) address to any device or node on a network so they can connect using IP is done using the network management protocol known as DHCP (Dynamic Host Configuration Protocol).
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Source code is one particular representation of a software system. It highlights some details and hides others. This is a good example of:
A nice example of abstraction is when a source code shows some details while hiding others.
What exactly is computer source code?A programmer's text editor or visual programming tool-created programming statements that are later saved in a file are known as source code. The output, a compiled file, that results from the compilation of the source code using a C compiler is referred to as object code in most contexts.
How is the source code concealed?Really, there is no method to conceal the source code for languages used on the web. Everyone has access to it if the browser can see it. Obfuscating it is one way to try to make it more difficult. Given enough time, one can still make sense of it.
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A hacker is trying to perform a Distributed Denial of Service (DDoS) attack on the server by flooding it with bogus requests from zombies in a botnet.
The correct option is A: "A hacker is trying to perform a DDoS attack on the server by flooding it with bogus requests from zombies in a botnet".
Distributed Denial of Service (DDoS) attacks are a type of denial of service (DoS) attack. A DDoS attack involves a network of multiple connected online devices, known as a botnet, that are used to flood a target website with bogus traffic.
In the scenerio where you are watching the network with a sniffer, analyzing external traffic when a server suddenly begins getting hundreds of unidentifiable random packets from a variety of sources. The most likely scenario is that a cybercriminal is trying to launch a DDoS attack on the server by flooding it with bogus requests from zombies in a botnet.
"
Complete question:
You are monitoring the network by analyzing the external traffic with a sniffer when, suddenly, a server starts receiving hundreds of unidentified random packets from many different sources. What is most likely happening?
A) A hacker is trying to perform a Distributed Denial of Service (DDoS) attack on the server by flooding it with bogus requests from zombies in a botnet.
B) A hacker is making the server devote more resources than the attacker's machine by exploiting a protocol weakness.
C) A hacker is trying to brute force the server to break into it with admin credentials.
D) A hacker is performing an ARP (Address Resolution Protocol) poisoning attack to make the attacker's IP the default gateway in order to redirect traffic.
"
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You are the security administrator for an enterprise that follows the bring your own device (BYOD) deployment model. What is the first action that you should take to protect sensitive enterprise data from exposure if an employee device is stolen and can't be located
You should perform a remote wipe to protect sensitive enterprise data from exposure if an employee device is stolen and can't be located.
What exactly are remote lock and wipe?Terms like "remote wipe" and "remote lock" are frequently used in the business to describe managing mobile devices like laptops, desktop computers, tablets, smartphones, and more (MDM).
A stolen laptop can it be remotely erased?Your Windows laptop can also be remotely erased. Prior to this occurring, confirm that the Find My Device feature is turned on: Authenticate using your Microsoft account. In Windows 10, make sure the feature is turned on by going to Settings > Update & Security > Find my device.
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To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a(n)
A very intricate and comprehensive communication control system or network is needed to achieve self-regulation. A feedback control loop is the name for this kind of network.
The homeostatic control system is what?Homeostasis controls an organism's internal environment and upholds a steady state of variables like pH and temperature.
Why is it referred to as homeostasis?Homeostasis, which derives from the Greek meanings for "same" and "steady," is any method used by living creatures to actively maintain the relatively consistent conditions required for survival.
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A large data mart might require a database administrator to design, construct, and maintain it.
True or False?
FALSE . The assertion made is untrue.
Why does keeping data in a single location help to assure data integrity?Data is kept in a single area using a centralized database, and changes can only be made there.As a result, this choice is right.
What does a data mart serve as?
The data mart is indeed a portion of a database system that is concentrated on a specific department, business unit, or topic matter.Data marts enable a designated group of users to quickly acquire crucial insights while wasting time looking through a large data warehouse by making particular data available to that group of users.
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What is the output results of Artificial Neurons, electrical signals, chemical signals, numbers or letters?
Answer:
Neurons communicate via both electrical signals and chemical signals. The electrical signals are action potentials, which transmit the information from one of a neuron to the other; the chemical signals are neurotransmitters, which transmit the information from one neuron to the next.
Explanation:
Which of the following is NOT a characteristic of Advanced Persistent Threat (APT)?
a. can span several years
b. targets sensitive proprietary information
c. uses advanced tools and techniques
d. is only used by hactivists against foreign enemies
One of the following is NOT a trait of Advanced Persistent Threat (APT), which is only applied by activists against adversaries abroad.
Which of the following traits best describes an apt attack?APT assaults differ from conventional cyber-attacks in four ways [9], which are listed below. Advanced or Complex, Persistent, Targeted, and Evasive (APTs) (see Figure 3). APT assaults are meticulously and methodically prepared, spanning several steps.
What traits define an advanced persistent threat that gives it that moniker?An advanced persistent threat (APT) is one that uses persistent, covert, and sophisticated hacking methods to enter a system and stay there for an extended length of time, perhaps with harmful effects.
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Which of the following describes an engine where the pistons move horizontally rather than vertically or diagonally
A "boxer" engine is one in which the pistons move in opposition to one another and the cylinders are arranged horizontally rather than vertically, as in inline and V-type engines.
Exactly what Engines are devices that transform energy from a variety of sources into mechanical force and motion:
additionally: a device or item that acts as an energy source. Quasars' engines might be black holes, like a locomotive.
How come it's called an engine?
The word "engine" derives from the Latin ingenium, which also refers to mental aptitude or cunning. The term acquired the meanings of inventiveness, contrivance, deception, and malice throughout its transition from French to English.
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The statement int[ ] list = {5, 10, 15, 20};
O initializes list to have 5 int values
O initializes list to have 20 int values
O initializes list to have 4 int values
O declares list but does not initialize it
O causes a syntax error because it does not include "new int[4]" prior to the list of values
Option 3 is correct ( initializes list to have 4 int values) The syntax here implies direct setup of integer array named list with 4 initial values. there is no need to mention size for this kind of syntax.
Describe an array.An array is a group of related data items kept in close proximity to each other in ram. The sole way to retrieve each data element direct is using its index number, making it the most basic data structure.
How do arrays function?A linear data structure called an array contains elements of the same data type in contiguous and nearby memory regions. Arrays operate using an index with values ranging from zero to (n-1), where n is the array's size.
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what two applications are an example of a mail server and a mail client application, respectively?
The two applications are of a mail server and a mail client application is exchange and outlook respectively.
Describe a server.A computer program or apparatus that offers a software application and its client, also called as the client, is referred to as a server. The actual computer that a server program runs on in a data center also is frequently referred to as a server.
How is a server operated?A server houses all the information related to the websites it hosts and distributes it to all mobile phones and computers (including yours) that require access to those websites.
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Which tool would be the best choice to remove and replace the motherboard BIOS chip?
A. IC extractor
B. Screwdriver
C. Needle-nose plier
D. Combination ratchet
The BIOS, which stands for Basic Input/Output System and is pronounced bye-oss, is a ROM chip that is present on motherboards that enables you to access and configure your computer system at the most fundamental level.
Can I swap out the BIOS chip?Even though your BIOS cannot be flashed, you can still update it if the chip is placed in a socketed DIP or PLCC chip. The current chip must be physically removed and either replaced after being reprogrammed with the newer BIOS code or exchanged for a brand-new chip.
What takes place if the BIOS chip is harmed?This initial program cannot be correctly launched and a computer cannot start if the BIOS chip on the motherboard is broken or corrupted.
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What type of OS in firmware is designed to manage a specific device like a video game console?
a. network OS
b. client OS
c. workstation OS
d. appliance OS"
d. The firmware known as Appliance OS is created specifically to manage devices like video game consoles.
What particular program can check a computer for infections?A class of software called antivirus software is created to stop, spot, and get rid of malware infections on specific computing devices, networks, and IT systems.
An OS for appliances is what?An software appliances is a software program integrated with just enough JeOS (just enough operating system) to run effectively on server- or virtual machine-based hardware that meets industry standards.
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*** JAVA ***
Retype and correct the code provided to combine two strings separated by a space.
secretID.concat(spaceChar);
secretID.concat(lastName);
import java.util.Scanner;
public class CombiningStrings {
public static void main (String [] args) {
String secretID = "Barry";
String lastName = "Allen";
char spaceChar = ' ';
/* Your solution goes here */
System.out.println(secretID);
return;
}
}
* This program is used to Concatenate the strings *
// import statement
import java.lang.*;
// Create a class CombiningStrings
public class CombiningStrings
{
// Create a main method
public static void main(String[] args)
{
String secretID = "Barry";
String lastName = "Allen";
char spaceChar = ' ';
/* Your solution goes here */
// Convert character data type to string data type
// The concatenation operation occurs with two string data
//types
String strSpaceChar = Character.toString(spaceChar);
// Concatenate two strings secretID and strSpaceChar
secretID = secretID.concat(strSpaceChar);
// Concatenate two strings secretID and lastName
secretID = secretID.concat(lastName);
// Display secretID
System.out.println(secretID);
return;
}
}
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Define a class TestIsEvenMethod, which is derived from unittest. TestCase class. Hint : Import unittest module and use TestCase utility of it. Define a test test_isEven1, inside TestIsEvenMethod, that checks if isEven(5) returns False or not.
Hint : Use assertEqual method to verify the function output with expected output. Add the statement unittest. Main(), outside the class definition
A unit test should be imported from the standard library. Make a class called TestSum that is an inheritor of TestCase. Add self as the first argument to the test functions to make them into methods.
When utilizing the unit test module, which class do we inherit to create a straightforward testing class?The function you want to test, formatted name(), and a unit test must first be imported. Following that, you develop a class, such as NamesTestCase, which will house tests for your formatted name() function. This class is descended from the unit test class. TestCase.
Why is pytest inferior to unit test?Unittest mandates that programmers construct classes inherited from the TestCase module, where the test cases are then specified as methods. For Pytest, however, all you need to do is declare a function with "test_" before it and utilize the assert conditions inside of it.
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Your worksheet appears with a reduced view of each page and blue dividers where new pages begin. What view are you in
Your worksheet displays a condensed version of each page and blue dividers to indicate where new pages start (page break preview).
What does the response on the worksheet mean?
In an Excel document, a worksheet is a collection of cells organised in rows and columns. It is the location where data entering happens. With select the optimal rows and corresponding to the different columns, each worksheet serves as a huge table for organizing data.
What does a worksheet in the classroom mean?
Worksheets are often loose sheets of paper with exercises or questions on them for students to complete and record their responses. They are utilized in most courses to some extent, and there are two main varieties in the math curriculum where they are often used.
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When talking about the physical elements of the Internet, the term redundancy refers to:
A) transmitting multiple copies of a single packet to safeguard against data loss.
B) the use of tiered high-speed switching computers to connect the backbone to regional and local networks.
C) delays in messages caused by the uneven flow of information through the network.
D) multiple duplicate devices and paths in a network built so that data can be rerouted if a breakdown occurs.
D) multiple duplicate devices and paths in a network built so that data can be rerouted if a breakdown occurs.
Which one of the above is the Internet's primary communication protocol?Definition:The primary communication protocol for the World Wide Web is TCP/IP (Control Protocol Protocol), often known as the Internet Protocol. TCP/IP permits simultaneous communication between all Internet-connected devices.
Which one of the above was the Internet's original goal?The Internet was initially developed for military use before being broadened to support scientific collaboration.The innovation was also influenced in part by the 1960s' rising need for computers.
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Which two ports should packet-filtering rules address when establishing rules for Web access?
a. 143, 80 b. 25, 110 c. 80, 443 d. 423, 88
Packet-filtering rules for Web access should address ports 80 and 443.
Port 80 is used for unencrypted HTTP traffic, which is the standard protocol for communicating data over the web. Port 443 is used for encrypted HTTPS traffic, which is the secure version of HTTP used to protect the privacy of data transmitted over the web.
Write a procedure ConvertToBinary that takes an input as a number from 0 to 16 (including 0 but not 16) and converts it to a binary number. The binary number should be returned as a list.
Answer:function ConvertToBinary(n) {
console.log(n.toString(2).split(''));
}
ConvertToBinary(13);
Explanation:
What is the name of the process which permits a continous tone image to be printed simultaneously with text
The Halftone process is the name of the process which permits a continous tone image to be printed simultaneously with text.
An image in halftones is what?Halftones are used most frequently to print photographs, paintings, or other comparable pictorial works that are reprinted in books, periodicals, and newspapers. In a halftone, the picture's continuous tones are divided into a sequence of evenly spaced, varying-sized dots and printed using just one ink colour.
In image processing, what is halftoning?By changing the size of teeny black dots placed in a regular pattern, halftoning, also known as analogue halftoning, simulates different shades of grey. Printing companies and the publishing business both employ this method.
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A customer recently moved a high-end graphics card from a known-working computer to a different computer. The computer works without issue when viewing email and web pages or when using certain applications. However, when a game with high-end graphics requirements is opened, the program will run for a few minutes before the computer shuts down. Which of the following is MOST likely causing the problem?
A. Video RAM
B. Power supply wattage
C. CPU frequency
D. Monitor resolution
The most likely cause of the problem is the power supply wattage.
What type of graphics card was installed in the new computer? The type of graphics card installed in the new computer depends on the specific model of the computer and its intended use. For example, a gaming computer may require a more powerful graphics card than a basic office computer. If the new computer is used mainly for gaming or video editing, it may require a dedicated graphics card such as an NVIDIA GeForce or AMD Radeon. For basic office work, a basic integrated graphics card is sufficient. When selecting a graphics card, it is important to consider the types of games or programs that will be used with the computer. Some games or programs may require a more powerful graphics card to run smoothly. Additionally, if the computer is used for video editing, an additional graphics card such as a Quadro or FirePro may be required. When shopping for a new computer, it is important to research the specific graphics card that will be required for the intended use of the computer. This will help to ensure that the computer is equipped with the necessary hardware to run the desired programs or games. Additionally, it is important to consider the power supply of the computer when selecting a graphics card.Some graphics cards require more power than the standard power supply can provide, so a higher wattage power supply may be necessary.To learn more about graphics card refer to:
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26. Universal Containers (UC) has a queue that is used for managing tasks that need to be worked by the UC customer support team. The same team will now be working some of UC's Cases. Which two options should the administrator use to help the support team
The two options should the administrator use to help the support team are (I) Configure a flow to assign the cases to the queue and (II) Use assignment rules to set the queue as the owner of the case.
A universal container is what?International distributor of containers, Universal Containers is expanding quickly. The business manufactures all different types of containers, including small postal containers, special equipment packing, and huge cargo shipping containers.
What does Salesforce mean by a universal container?As a rapidly expanding international supplier of container solutions, Universal Containers creates various scenarios by getting users to consider issues from a business viewpoint and by offering advice on the types of industries and scenarios we will encounter and how to handle them.
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Robin has been asked to lead training for new technicians at a local PC distributor specializing in gaming PCs. For which one of the following should she not recommend upgraded parts ?
A. High-end cooling
B. A RAID array
C. High-end video
D. Better sound card
If she doesn't suggest upgrading the parts, one of the following is a RAID array.
Which kind of operating system, and why, is best for a modern computer system?MS-Windows It has been the standard operating system powering computing systems around the world since Windows 95 up until Windows 10. It is simple to operate and quickly restarts operation. More protection has been added to the most recent versions to protect you and your data.
Which of these three desktop virtualization clients are there?Desktop-as-a-Service, Remote Desktop Services, and Virtual Desktop Infrastructure (VDI) are the three most prevalent types of desktop virtualization (DaaS).
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For business networks, which of the following is NOT one of the main cable types?
A) Twisted-pair
B) Polyvinyl
C) Coaxial
D) Fiber-optic
The correct answer is (B), Polyvinyl is NOT one of the primary cable types used for corporate networks.
What is network?Two or more computers linked together to pool resources (such printer and CDs), exchange information, or enable electronic communications make up a network. A network's connections to its computers can be made by cables, telephone line, radio frequencies, satellite, or infrared laser pulses.
What is the most common network?Though LAN & WAN networks are the two most common, the following network types may also be mentioned: A LAN that uses Wi-Fi wirelessly network infrastructure is known as a "wireless local area network." Metropolitan Area Networks: A network which covers a geographical area that is wider than that of a LAN but smaller than a WAN, like a city.
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