Chargement....
Appuyez et maintenez pour déplacer |
|||
Cliquez ici pour fermer |
Question 1 Rapport
________ is the process of dividing the disk into tracks and sectors
Détails de la réponse
The process of dividing a disk into tracks and sectors is called "formatting". Formatting prepares a new disk for use by creating a file system that can store and organize data. Tracks are circular paths on the disk, and sectors are small sections within each track. By dividing the disk into tracks and sectors, formatting allows the operating system to efficiently read and write data to the disk. Think of it like drawing lines on a blank piece of paper to create a grid. The grid allows you to organize your content and write in an orderly manner. Similarly, formatting divides the disk into a grid-like structure that the computer can use to organize and store data.
Question 2 Rapport
When an input signal 1 is applied to a NOT gate, the output is ..................
Détails de la réponse
When an input signal of 1 is applied to a NOT gate, the output will be 0. A NOT gate, also known as an inverter, is a digital logic gate that has one input and one output. The output of a NOT gate is the opposite of the input; if the input is high (1), the output will be low (0), and if the input is low (0), the output will be high (1). In other words, the NOT gate "inverts" the input signal. So, when a 1 is input to a NOT gate, the gate will invert it to 0 and produce that as the output signal. Similarly, when a 0 is input to a NOT gate, the gate will invert it to 1 and output that as the result.
Question 3 Rapport
___________ booting is done by turning on the computer at first instance.
Détails de la réponse
"Cold" booting is done by turning on the computer at first instance. Booting is the process of starting a computer, and it can be done in two ways: cold booting and warm booting. A cold boot occurs when a computer is turned on after being completely shut down. This is the first time the computer is starting up and all components are starting from a completely powered-off state. This type of booting is often necessary when there are problems with the operating system or software and a restart does not resolve the issue. A warm boot, on the other hand, occurs when a computer is restarted without first being shut down. This type of booting is usually faster than a cold boot because some components remain powered on and do not need to be restarted from a completely powered-off state. The options "hot," "spicy," and "cool" are not relevant to booting a computer.
Question 4 Rapport
An inventory management program can assist with ________
Détails de la réponse
An inventory management program can assist with all of the above: distribution, purchasing, and planning. Inventory management involves keeping track of a company's stock of goods and materials, and making sure that there are enough items on hand to meet customer demand without having too much excess inventory that ties up capital. A good inventory management program can help with distribution by providing real-time updates on inventory levels and locations, allowing companies to quickly and accurately fulfill customer orders. It can also assist with purchasing by tracking inventory levels and alerting staff when it's time to reorder supplies, helping to ensure that stock is always available when needed. Additionally, an inventory management program can assist with planning by providing data and analytics on sales trends, inventory turnover, and other key performance indicators. This information can help companies make informed decisions about which products to stock, when to order supplies, and how much inventory to keep on hand. Overall, a well-designed inventory management program can help companies save time, reduce waste, and improve efficiency.
Question 5 Rapport
Which type of network is usually contained inside one office building?
Détails de la réponse
The type of network that is usually contained inside one office building is called a Local Area Network or LAN. A LAN is a computer network that connects devices within a relatively small area, such as a single building, office, or campus. It is designed to allow computers and other devices to communicate with each other and share resources, such as printers, files, and internet access. LANs are typically owned and operated by a single organization, such as a business or government agency, and are often built using Ethernet cables or Wi-Fi technology. LANs are used to facilitate communication and data sharing between employees within an office building or other confined area, and are often more secure than other types of networks because they are not connected to the internet. In summary, a LAN is the type of network that you would most commonly find inside one office building.
Question 6 Rapport
Which of these application packages is mostly used by computer users?
Détails de la réponse
Out of the options given, Microsoft Excel and Microsoft Word are the two most commonly used application packages by computer users. Microsoft Excel is a spreadsheet application that allows users to create, edit, and analyze numerical data in a structured manner. It is widely used by businesses and individuals for tasks such as financial analysis, budgeting, data management, and statistical analysis. Microsoft Word, on the other hand, is a word processing application used for creating and editing text-based documents. It is used for a wide range of purposes, such as writing reports, letters, resumes, and academic papers. While CorelDraw is a graphic design software used for creating vector graphics and Ms Access is a database management system used for storing, managing and retrieving data, they are not as commonly used as Microsoft Excel and Microsoft Word in day-to-day computer usage.
Question 7 Rapport
What differs a system software from application software?
Détails de la réponse
System software and application software are two broad categories of computer software, each with different functions and purposes. System software is a collection of programs that control and manage the basic operations of a computer system. It is designed to provide a platform for other software applications to run on. System software includes operating systems, device drivers, utilities, and other tools that enable the computer to operate and perform its functions. On the other hand, application software refers to programs that are designed to perform specific tasks or applications for the user. These programs are used for word processing, spreadsheets, photo editing, web browsing, and other specialized tasks. Application software is often created by third-party developers and can be installed and used by end-users. The main difference between system software and application software is the purpose they serve. System software is responsible for managing the hardware and providing a platform for other software to run on, while application software is designed to perform specific tasks for the user. Other differences between system software and application software include: - Ability to multi-task: System software is designed to manage and allocate system resources, while application software is designed to perform specific tasks. Therefore, system software has more multitasking capabilities than application software. - Minimal in terms of space: System software is usually larger in terms of size and requires more storage space than application software. - Presence of cache memory: System software may use cache memory to improve the performance of the computer system, while application software does not typically use cache memory. - Unique programs installed by the creators to help run the computer: System software includes programs that are installed by the computer manufacturer or operating system developer to help run the computer, such as device drivers and system utilities. Application software does not include these types of programs.
Question 8 Rapport
The windows explorer is divided into _________ categories.
Détails de la réponse
The Windows Explorer is divided into five categories, which are: 1. Quick Access: This category contains shortcuts to frequently accessed folders and files, such as the Desktop, Documents, and Downloads folders. 2. OneDrive: This category displays files and folders stored on OneDrive, Microsoft's cloud storage service. 3. This PC: This category displays all the drives and storage devices connected to the computer, including the hard drive, external drives, and USB flash drives. 4. Network: This category displays other devices on the local network, such as other computers or printers that are connected. 5. Recycle Bin: This category contains files and folders that have been deleted from the computer and are waiting to be permanently deleted or restored. These categories help users easily navigate and find files and folders on their computer, as well as access files and folders stored in the cloud or on other devices connected to the network.
Question 9 Rapport
What is the full form of UDP?
Détails de la réponse
The full form of UDP is User Datagram Protocol. It is a communication protocol used for sending and receiving data over the internet. UDP is a lightweight, connectionless protocol that operates at the Transport layer of the Internet Protocol (IP) suite. Unlike TCP (Transmission Control Protocol), which guarantees delivery of data, UDP does not provide any guarantees regarding delivery or sequencing of packets. Instead, UDP is often used for applications that require faster data transfer, such as video streaming or online gaming, where small amounts of lost data are acceptable. The "User Datagram" part of the name refers to the fact that UDP sends data in the form of datagrams, which are discrete chunks of data that are sent as individual packets. The "Protocol" part of the name indicates that UDP is a set of rules and procedures that govern how data is transmitted and received over a network. In summary, UDP is a fast and lightweight protocol used for sending data over the internet. Its name reflects the fact that it operates using datagrams and is a protocol for communication.
Question 10 Rapport
_______ is the process of finding errors and fixing them within a program.
Détails de la réponse
The process of finding errors and fixing them within a program is called debugging. When a program is being developed, it may contain errors, also known as bugs, that prevent it from functioning properly. Debugging is the process of identifying and fixing these errors. Debugging can involve a number of techniques, such as analyzing error messages, reviewing code, and stepping through the program line by line to find where errors occur. Once an error is identified, the programmer can make changes to the code to correct the issue. Compiling is the process of translating source code into machine code, which can then be executed. Execution is the process of running a program. Scanning, in the context of programming, typically refers to the process of analyzing code for security vulnerabilities rather than identifying and fixing errors. In summary, debugging is the process of identifying and fixing errors in a program, whereas compiling, executing, and scanning are different processes that serve different purposes in the development and operation of a program.
Question 11 Rapport
What does an Operating System do?
Détails de la réponse
An operating system (OS) is a software program that manages a computer's hardware and software resources. Simply put, it acts as a bridge between the computer's hardware and the applications you run on it. An operating system is responsible for several important tasks, including: - Memory Management: It manages the computer's memory and makes sure that programs are running efficiently and that there's enough memory available when you need it. - File Management: It keeps track of all the files on the computer and organizes them in a way that makes it easy for you to find what you need. - Application Management: It launches and runs the applications you want to use and ensures that they run smoothly and don't interfere with each other. In short, an operating system is like a traffic cop for your computer, making sure that everything runs smoothly and efficiently.
Question 12 Rapport
A computer can't boot if it does not have ____________
Détails de la réponse
A computer cannot boot if it does not have an operating system (OS). An operating system is the most basic software that runs on a computer and is responsible for managing and coordinating all the activities of the computer hardware and software. It is the first program that runs when the computer starts up, and it is responsible for initializing the hardware and loading other software, such as device drivers and applications. Without an operating system, the computer would not be able to perform any useful tasks, as it would not have the necessary software to control and manage its hardware components. Examples of popular operating systems include Microsoft Windows, macOS, and Linux.
Question 13 Rapport
Which of these is not a job of the operating system
Détails de la réponse
The job of the operating system that is not listed among the options is "Handling HTTP requests for Web pages." The operating system is the most important software that runs on a computer, providing an interface between the user and the computer hardware. It performs various functions to ensure that the computer system operates smoothly and efficiently. One of the key jobs of the operating system is to manage the computer's resources, such as allocating memory to programs that are running on the computer. The operating system is responsible for managing the computer's memory, ensuring that each program has enough memory to run efficiently, and preventing one program from using another program's memory. Another important job of the operating system is to provide security by preventing unauthorised access to files and data on the computer. It controls access to the computer's resources and ensures that only authorised users have access to the files and data that belong to them. However, handling HTTP requests for web pages is not a job of the operating system. Instead, this task is handled by web servers that run on top of the operating system. Web servers receive requests from clients, such as web browsers, and serve web pages to them over the internet. In summary, while the operating system performs many important tasks, such as managing resources and providing security, handling HTTP requests for web pages is not one of its jobs.
Question 14 Rapport
System software can further be classified into two. Operating software and ______________ software
Détails de la réponse
System software can further be classified into two categories: Operating software and Utility software. Operating software, also known as an Operating System (OS), is the main type of software that controls and manages all the other software and hardware on a computer. It acts as an intermediary between the computer hardware and the applications you use. Examples of operating systems include Windows, macOS, and Linux. Utility software, on the other hand, is a type of system software designed to help manage, maintain, and optimize the computer system. Examples of utility software include anti-virus software, file management systems, and storage management software. These types of software provide specific functions that help you keep your computer running smoothly and efficiently.
Question 15 Rapport
Which program translates programs to a simpler language that the computer can execute.
Détails de la réponse
The program that translates programs to a simpler language that the computer can execute is called a compiler. A compiler is a program that takes the source code of a program written in a high-level programming language and translates it into machine code or executable code that the computer can understand and execute. The process of compiling involves several steps, including lexical analysis, syntax analysis, semantic analysis, code optimization, and code generation. When a programmer writes a program in a high-level programming language such as Java or Python, the code is not directly executable by the computer. Instead, the code must be translated into machine code, which is a low-level language that the computer can understand and execute. This is where the compiler comes in. The compiler takes the source code written in the high-level programming language and converts it into machine code that can be executed by the computer. The advantage of using a compiler is that the resulting executable code is usually faster and more efficient than code interpreted by an interpreter, which we will discuss next. Additionally, since the code is already translated into machine code, it can be executed multiple times without the need for further translation, making it faster to execute. Overall, a compiler is a program that translates high-level programming code into machine code that a computer can execute, allowing programmers to write code in a more human-readable language and then have it translated into a language that the computer can understand and execute.
Question 16 Rapport
How many types of booting are there?
Détails de la réponse
There are essentially two types of booting: 1. Cold booting: This is the process of starting a computer from a powered-off state. This is typically done by pressing the power button on the computer. A cold boot starts the computer's hardware and boot loader, which then loads the operating system into memory. 2. Warm booting: This is the process of restarting a computer that is already powered on. This is typically done by pressing the reset button or by using the operating system's restart feature. A warm boot reloads the operating system from memory, bypassing the boot loader and hardware initialization. It's important to note that these are the two most basic and widely used types of booting, but there could be other variations or advanced booting procedures used in certain scenarios.
Question 17 Rapport
Computer files can be characterised by all but,
Détails de la réponse
Computer files can be characterized by their title, accessibility, ability to be modified, and where they are stored. The title of a file is simply its name, which can be used to help identify and organize it among other files. Accessibility refers to whether or not a file can be accessed or viewed by the user. Depending on the permissions set by the owner of the file, it may be accessible to everyone, only to specific users, or not accessible at all. The ability to be modified refers to whether or not the file can be edited or changed in some way. For example, a text file can be modified by adding, deleting, or changing the text within it. Where the file is stored refers to the location on a computer or network where the file is saved. This could be on the computer's hard drive, a USB drive, a cloud storage service, or a network server. Therefore, all four of these characteristics are applicable to computer files and are important to consider when working with them.
Question 18 Rapport
A light sensitive device that converts drawing, printed text or other images into digital form is
Détails de la réponse
The device that converts drawing, printed text or other images into digital form is called a scanner. A scanner works by using a light-sensitive sensor that captures the image of the document or picture being scanned. The image is then converted into a digital format, which can be saved to a computer or other digital storage device. Scanners are commonly used for a variety of purposes, such as scanning important documents, digitizing old family photos, and creating digital copies of artwork or other visual media. They are particularly useful for situations where a physical copy of a document or image is not practical or convenient, such as when sharing information over long distances or storing large amounts of data. Overall, a scanner is a valuable tool for anyone who needs to convert physical documents or images into digital form for easy access and storage.
Question 19 Rapport
Why is the base 10 system unique?
Détails de la réponse
The base 10 system, also known as the decimal system, is unique because it is the most widely used number system in the world and has been adopted by nearly all cultures and civilizations. The reason for this widespread usage is that it is based on the number of human fingers, with 10 being the number of digits on two hands. This made it a convenient and intuitive system for early humans to count and perform mathematical operations with. Additionally, the base 10 system allows for easy representation of numbers using only 10 symbols (0 to 9), making it simple to write, communicate, and perform mathematical operations with larger numbers.
Question 20 Rapport
he rules that govern the structure of a command or programming language is called
Détails de la réponse
The rules that govern the structure of a command or programming language is called Syntax. Syntax determines the proper order and format of the elements that make up a command or program, such as keywords, variables, and operators. These rules must be followed precisely to create a functioning program. Syntax errors occur when these rules are not followed, and the program will not execute properly. So, in summary, Syntax is a set of rules that define the correct structure and formatting of a command or programming language.
Question 21 Rapport
What is the permanent memory built into your computer called?
Détails de la réponse
The permanent memory built into a computer is called ROM (Read-Only Memory). It is called "read-only" because, unlike RAM (Random Access Memory), which can be written to and rewritten, the information stored in ROM cannot be changed by the computer or the user. ROM is a type of memory that is built into the computer's hardware and contains the basic instructions that the computer needs to boot up and run its basic functions. These instructions are often referred to as the "firmware" of the computer, and include the BIOS (Basic Input/Output System) that controls the startup process, as well as other low-level software that interacts directly with the computer's hardware. CD-ROM, on the other hand, is a type of storage medium that can be used to store data or programs, but it is not built into the computer itself. CDs and DVDs can be used to store data, programs, or other types of media, but they are not considered a type of permanent memory built into the computer.
Question 22 Rapport
Which part of a processor contains the hard ware necessary to perform all the operations required by a computer?
Détails de la réponse
The part of a processor that contains the hardware necessary to perform all the operations required by a computer is the "Data path". The data path, also known as the "Arithmetic Logic Unit" (ALU), is a component of the processor that performs arithmetic and logical operations on data. It is responsible for carrying out the instructions of the computer program, performing calculations, and manipulating data. The controller, registers, and cache are also important components of a processor, but they do not contain the hardware necessary to perform all the operations required by a computer. The controller, also known as the "Control Unit", is responsible for directing the flow of data and instructions within the processor, as well as between the processor and other components of the computer. Registers are high-speed storage locations within the processor that store data temporarily for processing. Cache is a small amount of high-speed memory that stores frequently used data and instructions, making them quickly accessible to the processor. Therefore, out of the given options, the data path or ALU is the part of the processor that contains the hardware necessary to perform all the operations required by a computer.
Question 23 Rapport
What is the major purpose of application software?
Détails de la réponse
The major purpose of application software is to help people perform specific tasks. It provides user-friendly interface to interact with computer systems and accomplish tasks such as word processing, creating spreadsheets, managing databases, playing games, and much more. In short, it is designed to make the user's work easier and more efficient, allowing them to accomplish their work goals with the help of the computer.
Question 24 Rapport
Which of the following is termed as the minimum error code?
Détails de la réponse
Gray codes are less error-prone because they only change in one-bit position at a time. Hence, they are considered as the minimum error code.
Question 25 Rapport
The major function of a Database management system is _______________
Détails de la réponse
The major function of a Database Management System (DBMS) is to efficiently store and manage large amounts of data in a structured manner, making it easy to retrieve, update, and manipulate the data as needed. A DBMS provides a centralized location for storing and organizing data, allowing multiple users to access and modify the data simultaneously while ensuring data integrity and security. In addition, a DBMS provides tools for defining and enforcing data relationships, constraints, and rules, ensuring data consistency and accuracy. It also provides a query language for retrieving data from the database and generating reports. Overall, the primary goal of a DBMS is to make it easy for users to interact with large amounts of data in a way that is efficient, secure, and reliable.
Question 26 Rapport
The number of input combination for a 4 input gate is ______
Détails de la réponse
The number of input combinations for a 4-input gate is 16. To understand why, you can think of each input as having two possible states, either 0 or 1. For a 4-input gate, there are 4 inputs, and each input can be in one of two states. Therefore, the total number of possible input combinations is 2 x 2 x 2 x 2 = 16. To illustrate this further, you can create a truth table that lists all possible input combinations and their corresponding output values for the gate. The truth table will have 16 rows, with each row representing a unique combination of input values.
Question 27 Rapport
In any software package, which of the following versions represents a major improvement on the previous version?
Détails de la réponse
In any software package, a new version number that increases the whole number before the decimal point represents a major improvement on the previous version. Therefore, the versions that represent a major improvement on the previous version is 2.0.
In software development, version numbers are used to identify different releases or iterations of a program. A new version number is typically assigned when significant changes or improvements are made to the software. The first number before the decimal point in a version number is known as the major version number. When this number increases, it indicates that there has been a significant change or improvement in the software that warrants a new release.
The second number after the decimal point is the minor version number, which typically represents smaller changes or bug fixes. Therefore, 2.0 is a major releases that represent significant improvements over the previous version, while 1.0, 1.5 and 2.5 are minor releases that represent smaller changes or bug fixes.
In summary, a new software version number that increases the major version number before the decimal point represents a major improvement on the previous version, indicating that significant changes or improvements have been made to the software.
Question 28 Rapport
The Caps key on a keyboard is used to___________
Détails de la réponse
The Caps key on a keyboard is used to switch between upper and lower case letters. When you press the Caps key, it changes the letter case of the letters you type from lowercase to uppercase or vice versa. This means that if you type with the Caps key on, all the letters you type will appear in uppercase. Similarly, if you type with the Caps key off, all the letters you type will appear in lowercase. This feature is particularly useful when you want to emphasize certain words or phrases, such as in titles or headings. It can also be used to make your text easier to read by adding some variety to the letter case. For example, when typing a password or other sensitive information, you may want to use a combination of upper and lower case letters to make it more secure. In summary, the Caps key is used to switch between uppercase and lowercase letters in order to make text easier to read, emphasize words, or add security to sensitive information.
Question 29 Rapport
The device primarily used to provide hardcopy is the?
Détails de la réponse
The device primarily used to provide hardcopy is the "printer". A printer is a device that produces a physical or hardcopy of electronic documents or images, typically on paper. It can be connected to a computer or other device through a cable or wireless connection, and it can print text, graphics, or images in black and white or color. Printers come in many different types, including inkjet, laser, and thermal, and they can be used in homes, offices, and other settings. Card readers, computer consoles, and CRTs (cathode ray tubes) are not primarily used to provide hardcopy. A card reader is a device used to read information from a magnetic stripe or chip on a plastic card, such as a credit card. A computer console is the part of a computer system that contains the keyboard, monitor, and other components used to interact with the computer. A CRT is an older type of display technology that was used in older computer monitors and televisions, but has largely been replaced by newer technologies such as LCD and LED displays.
Question 30 Rapport
To determine if a computer has the ability to think, a test was conducted named as
Détails de la réponse
The test used to determine if a computer has the ability to think is called the Turing test. The Turing test was proposed by the mathematician and computer scientist Alan Turing as a way to determine if a machine can exhibit intelligent behavior equivalent to, or indistinguishable from, that of a human. The test involves a human evaluator who engages in a natural language conversation with a machine and a human, without knowing which is which, and tries to determine which is the machine based on their responses. If the evaluator is unable to reliably distinguish the machine from the human, the machine is said to have passed the Turing test and demonstrated human-like intelligence.
Question 31 Rapport
What does RAM and ROM have in common?
Détails de la réponse
The first option, "They both deal with memory," is correct. RAM and ROM are both types of memory used in computers and other electronic devices. RAM (Random Access Memory) is a type of volatile memory that stores data temporarily and is used for running programs and applications. When the power is turned off, the data stored in RAM is lost. ROM (Read-Only Memory) is a type of non-volatile memory that stores data permanently and is used for storing the basic input/output system (BIOS) that helps to boot up the computer. The data stored in ROM cannot be easily altered or deleted. In summary, both RAM and ROM are types of memory used in electronic devices, and they both deal with storing and accessing data.
Question 32 Rapport
What does a linker program do?
Détails de la réponse
A linker program is a software tool that links different parts of a computer program together. Think of a computer program as a puzzle with many pieces. The linker takes all those pieces and puts them together to make the complete program. The linker performs tasks such as combining object files, resolving symbol references, and creating the final executable file. The linker program takes care of the following tasks: 1. Linking the program with other programs needed for its execution. For example, if a program uses a library like the C standard library, the linker will link the program with that library so that the program can use its functions. 2. Relocating the program to execute from a specific memory area allocated to it. This means that the linker will place the program in a specific area of the computer's memory so that it can be executed. 3. Interfacing the program with the entities generating its input data. This means that the linker will make sure that the program can receive data from other parts of the system, such as user input or data from a file. In summary, the linker program is responsible for putting all the pieces of a computer program together so that it can be executed correctly.
Question 33 Rapport
Which process is used by large retailers to study trends?
Détails de la réponse
Large retailers use data mining to study trends. Data mining is the process of analyzing large amounts of data and identifying patterns and trends in that data to make informed decisions. This can involve looking at customer behavior, sales data, market trends, and other types of data to gain insights into what products are popular, what customers are looking for, and how the market is changing. The goal of data mining is to help retailers make informed decisions about their business and stay ahead of the competition.
Question 34 Rapport
The joystick typically have a button on _________ used to select the option pointed by the cursor.
Détails de la réponse
The joystick typically has a button on top, used to select the option pointed by the cursor. A joystick is an input device that allows a user to control the movement of a cursor on a screen or to interact with a virtual environment or game. The joystick typically has a stick or lever that can be moved in different directions to control the movement of the cursor. The button on the top of the joystick is used to select the option that the cursor is pointing to on the screen. This button is commonly referred to as the "trigger" button, and it allows the user to perform actions such as selecting a menu option, firing a weapon in a game, or interacting with objects in a virtual environment. Overall, the joystick and its trigger button provide a simple and intuitive way for users to interact with software and games, making them a popular input device for a wide range of applications.
Question 35 Rapport
Computer software can be classified into how many parts?
Détails de la réponse
Computer software can be classified into two main parts: system software and application software. 1. System software: This type of software includes the programs that control the hardware components of a computer system and provide a platform for running other software applications. Examples of system software include operating systems, device drivers, utility programs, and firmware. 2. Application software: This type of software is designed to perform specific tasks or functions for the user. Application software can be further classified into two subcategories: general-purpose applications and specialized applications. Examples of general-purpose applications include word processors, spreadsheets, and web browsers, while examples of specialized applications include graphics software, database software, and video editing software. In summary, computer software can be classified into two main parts: system software and application software. The system software controls the hardware and provides a platform for running other software applications, while application software is designed to perform specific tasks or functions for the user.
Question 36 Rapport
The first commuters were programed using _________
Détails de la réponse
The first commuters were programmed using machine language. Machine language is the lowest-level programming language that can be used to write computer programs. It consists of binary code, which is a sequence of 1's and 0's that the computer can understand and execute directly. The first computers, such as the ENIAC, did not have high-level programming languages like we have today, such as Python or Java. Instead, they had to be programmed using machine language. This meant that the programmers had to manually enter long sequences of binary code to perform even the simplest tasks on the computer. As computers advanced, higher-level programming languages were developed to make programming easier and more accessible to non-experts. These higher-level languages are often compiled into machine language, which the computer can then execute. But in the early days of computing, programmers had no choice but to write code directly in machine language.
Question 37 Rapport
Which of the following is a computer not used for?
Détails de la réponse
A computer can be used for entertainment, information, and social media, so the answer is "none of the above". Computers are versatile machines that can perform a wide variety of tasks, including playing games, streaming videos, accessing news and other information, and connecting with others on social media platforms. While some computers may be designed or optimized for certain types of tasks, such as gaming or video editing, all computers are capable of handling entertainment, information, and social media to some extent. Therefore, the answer to this question is that there is no option that describes something a computer cannot be used for among the given choices.
Question 38 Rapport
The java interpreter translates a java program from ____________ to machine language.
Détails de la réponse
The Java interpreter translates a Java program from its original form, which is a high-level programming language, into a special type of code called "bytecode." Bytecode is a low-level code that is specific to the Java Virtual Machine (JVM), which is a software layer that sits between the Java program and the computer's hardware. When a Java program is compiled, it is translated into bytecode rather than machine language. Bytecode is a form of binary code that is designed to be portable across different platforms, meaning that it can run on any computer that has a JVM installed, regardless of the specific hardware or operating system. So, to summarize, the Java interpreter translates a Java program from a high-level programming language into bytecode, which is a low-level binary code that is specific to the JVM. The bytecode can then be executed by the JVM on any computer that has it installed.
Question 39 Rapport
Binary coded decimals (BCD) numbers express each digit as a ___________
Détails de la réponse
Binary coded decimals (BCD) numbers express each digit as a nibble. A nibble is a group of 4 bits, which can represent 16 distinct values (0-15). In BCD, each decimal digit is encoded using a separate nibble, where each nibble represents the binary equivalent of the digit. For example, the decimal number 123 would be represented in BCD as four nibbles: 0001 (1), 0010 (2), 0011 (3), and 0011 (3). Using a nibble to represent each digit is a simple and efficient way to encode decimal numbers in binary form. BCD is commonly used in computer systems where decimal arithmetic is required, such as in financial calculations or in control systems where numerical values need to be displayed on digital screens. In summary, BCD numbers express each decimal digit as a nibble, allowing for efficient and accurate representation of decimal numbers in binary form.
Question 40 Rapport
A 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is ___________
Détails de la réponse
The 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is the XOR (exclusive OR) gate. An XOR gate has two input signals and one output signal. The output is HIGH (1) if the two input signals are different, and LOW (0) if the two input signals are the same. In other words, an XOR gate produces an output signal that is the "exclusive or" of its two input signals. When one of the input signals is held at a constant logic level (either HIGH or LOW), the XOR gate can be used to pass the other input signal unchanged or inverted, depending on the value of the constant signal. If the constant signal is HIGH, the output signal will be inverted; if the constant signal is LOW, the output signal will be unchanged. This property of the XOR gate makes it useful in digital electronics for a variety of applications, such as data encryption, error detection and correction, and clock synchronization.
Souhaitez-vous continuer cette action ?