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Question 1 Report
What is the major purpose of application software?
Answer Details
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 2 Report
___________ is when someone steals another persons identity.
Answer Details
The correct answer is "Identity Theft." Identity theft occurs when someone pretends to be another person by stealing their personal information, such as their name, social security number, or credit card information, in order to commit fraud or other illegal activities. The thief may use this information to open bank accounts, make purchases, or apply for loans in the victim's name, causing financial harm and damaging the victim's credit score. It can happen both in the physical world (e.g. someone stealing your mail or wallet) and online (e.g. someone hacking into your social media or email account). It is important to take steps to protect your personal information and monitor your financial accounts to prevent identity theft.
Question 3 Report
The actual physical network of wires, cables and satellite that connects computers and resources throughout the world is the _______________
Answer Details
The actual physical network of wires, cables, and satellites that connects computers and resources throughout the world is the Internet. The Internet is a global network of connected devices that enables communication and exchange of information between computers. It enables devices to connect and share resources such as websites, email, files, and other digital content. The Internet uses a variety of communication protocols and technologies, including wired and wireless connections, to facilitate this communication and exchange of information. The Internet is a vital part of our daily lives, providing access to information and enabling us to communicate and collaborate with others from anywhere in the world.
Question 4 Report
What is considered the brain of the computer?
Answer Details
The brain of the computer is considered to be the "Central Processing Unit" (CPU). The CPU is the primary component of a computer that performs most of the processing and calculations required to run programs and applications. It is responsible for executing instructions and controlling the operations of the computer's other hardware components, such as the memory, input/output devices, and storage devices. The CPU is often referred to as the "brain" of the computer because it performs many of the same functions that the human brain does, such as processing information, making decisions, and controlling the body (or in the case of the computer, the hardware components). It is located on the motherboard of the computer, and it consists of a small chip that contains millions of transistors and circuits that work together to perform calculations and operations at incredible speeds. While the monitor/display screen, mouse, and printer are all important components of a computer system, they do not serve the same function as the CPU. The monitor/display screen displays the output from the computer, the mouse is an input device used to control the cursor on the screen, and the printer is a device used to produce hardcopy output from the computer.
Question 5 Report
Which is not a network for distribution of information?
Answer Details
Microsoft Word is not a network for the distribution of information. Microsoft Word is a word processing software that is used to create, edit, and format documents. It is not a network because it does not distribute information, it is used to create and store information on a single device or in a cloud storage service. On the other hand, cloud storage, several computers to one printer, and e-mail are all examples of networks that distribute information.
Question 6 Report
Which of the listed is not a type of computer application?
Answer Details
"Joy stick" is not a type of computer application. A computer application, also known as an application or app, is a program that runs on a computer and provides a specific set of functions for the user to perform. Examples of computer applications include Microsoft Word for word processing, Firefox for web browsing, and VLC media player for playing audio and video files. A joy stick, on the other hand, is a device used to control movement in computer games or simulations. It typically consists of a stick that can be moved in different directions to control the movement of an object on the screen. Joy sticks are not considered applications because they do not provide specific functions like a word processor or media player, but rather serve as input devices for other applications.
Question 7 Report
What controls the way in which the computer system function and provides a means by which users can interact with the computer.
Answer Details
The operating system controls the way in which a computer system functions and provides a means by which users can interact with the computer. The operating system (OS) is a type of software that manages and controls the hardware and software resources of a computer system. It provides a common platform for different types of applications to run on the computer and enables users to interact with the computer by providing a graphical user interface (GUI) or a command line interface (CLI). The operating system performs various tasks, such as managing the computer's memory, processing input and output requests, controlling peripheral devices, and providing a file system for storing and retrieving data. It also provides security features, such as user authentication and access control, to protect the computer system from unauthorized access. The operating system is a fundamental component of any computer system, and it enables users to interact with the computer by providing a user-friendly interface. It acts as an intermediary between the hardware and the applications, making it possible for different programs to run on the same computer and share resources such as memory, CPU time, and disk space. In summary, the operating system is the software that controls the way in which a computer system functions and provides a means by which users can interact with the computer, by managing and controlling the hardware and software resources of the system and providing a platform for different types of applications to run.
Question 8 Report
What type of errors occurs when the program is asked to implement an impossible task such as dividing a number by zero?
Answer Details
Dividing a number by zero is an impossible mathematical operation, which leads to a type of error called an "Arithmetic error". When a program encounters such an operation, it is unable to perform the calculation, and it generates an error message to indicate the issue. Arithmetic errors are a type of runtime error because they occur during the execution of the program, rather than during the compilation or writing of the code (syntax errors). Logical errors are different from arithmetic errors because they occur when the program's logic is flawed, leading to incorrect results. So, in summary, dividing by zero results in an arithmetic error because it is a mathematical impossibility that cannot be computed.
Question 10 Report
The super computers are mainly used for
Answer Details
Supercomputers are high-performance computers designed for handling extremely complex and large-scale computational tasks. They are mainly used for mathematical intensive scientific applications, such as simulating complex physical phenomena, weather forecasting, and drug discovery. Supercomputers can perform a vast number of calculations in a short amount of time, which is essential for solving complex problems. These computers are designed to handle massive amounts of data and perform complex algorithms, making them ideal for handling input-output intensive processing tasks. Although they can retrieve data and manipulate records like any other computer, their true power lies in their ability to perform mathematical calculations and simulations that would be impossible for regular computers. Supercomputers are used in a wide range of fields, including aerospace, automotive, energy, finance, and healthcare, to name a few. Their use has led to breakthroughs in many fields and has contributed significantly to scientific and technological advancements.
Question 11 Report
Which of the following is not a model used in problem solving?
Answer Details
Among the options given, critical thinking is not a model used in problem solving. Critical thinking is a mental process that involves analyzing and evaluating information, reasoning, and making decisions. It is a skill that is used to approach problems in a thoughtful and logical way. However, it is not a formal problem-solving model that provides a structured approach to solving a problem. On the other hand, SDLC (Software Development Life Cycle), waterfall, and prototype are models used in problem solving. SDLC is a structured approach used to develop and maintain software. It involves a series of phases that includes planning, analysis, design, implementation, and maintenance. This model provides a framework to guide the development of software systems. Waterfall is a linear sequential approach to software development where each phase must be completed before the next phase can begin. It is a model used to manage the development of software systems, and it emphasizes the importance of planning and documentation. Prototype is a model used in problem solving where a working model of a product or solution is developed to test and refine its features and functionalities. It is used to gather feedback and identify areas for improvement before the final product is developed. In summary, critical thinking is a mental process that is used in problem solving, but it is not a formal problem-solving model. SDLC, waterfall, and prototype are examples of problem-solving models that provide structured approaches to solving problems in various fields.
Question 12 Report
In which situation does running application remain active?
Answer Details
When a computer application is running, it is stored in the computer's memory, which allows it to continue functioning as long as it is needed. In the case of logging off, shutting down, or rebooting the computer, all applications currently running on the system are closed or terminated. Therefore, the running application would not remain active in any of these situations. However, in the case of a user switching, the running application can remain active. This is because when a user switches on a computer that is running, the operating system creates a new user session while keeping the current user's session active. In this scenario, the running application would continue to function within the current user's session, while the new user session would be independent and have its own set of applications and processes. Therefore, the running application would remain active when the user is switched.
Question 13 Report
A half byte is known as ________.
Answer Details
A half byte is known as a nibble. A byte is a unit of digital information in computing, typically consisting of 8 bits. A nibble, on the other hand, is half of a byte, consisting of 4 bits. This unit is often used in computer architecture and data representation, especially when referring to memory addresses or data manipulation.
Question 14 Report
Hexadecimal numbers are a mixture of
Answer Details
Hexadecimal numbers are a mixture of decimal numbers and letters. The decimal number system uses 10 digits, 0 through 9, to represent all numbers. The hexadecimal number system uses 16 symbols, 0 through 9 and the letters A through F, to represent numbers. These letters are used to represent the values 10 through 15, respectively. This makes hexadecimal a convenient way to represent binary data in a compact form, since each hexadecimal digit represents 4 binary digits.
Question 15 Report
From where can the name of a user account be changed?
Answer Details
The name of a user account can be changed from the Control Panel in most operating systems, including Windows and macOS. In Windows, you can access the Control Panel by clicking on the Start menu and selecting "Control Panel" from the list of options. Once in the Control Panel, you can navigate to the "User Accounts" section and select the user account whose name you want to change. From there, you can click on the "Change your account name" option and enter the new name for the account. Similarly, in macOS, you can access the System Preferences by clicking on the Apple menu and selecting "System Preferences" from the list of options. Once in the System Preferences, you can navigate to the "Users & Groups" section and select the user account whose name you want to change. From there, you can click on the "Full Name" field and enter the new name for the account. In summary, the name of a user account can be changed from the Control Panel or System Preferences of your operating system. The exact steps to do so may vary slightly depending on the operating system, but in general, you can navigate to the "User Accounts" or "Users & Groups" section and select the account whose name you want to change.
Question 16 Report
A permanent memory, which has data and instruction to start up the computer and does not erase data after power off.
Answer Details
The permanent memory that has data and instructions to start up the computer and does not erase data after power off is called ROM (Read-Only Memory). ROM is a type of computer memory that is pre-programmed with data and instructions during manufacturing. This means that once the data and instructions are written into ROM, they cannot be changed or erased, hence the name "read-only". When you turn on your computer, the CPU (central processing unit) looks to the ROM for the instructions on how to boot up the computer. These instructions include basic input/output system (BIOS) code that checks the hardware components to make sure they are working properly, and then loads the operating system from the hard drive or another storage device. The data and instructions stored in ROM are not affected by power outages or restarts, meaning that they are retained even when the computer is turned off. This is why ROM is called non-volatile memory. In summary, ROM is a type of permanent memory that contains data and instructions to start up a computer and does not lose this information when the computer is turned off.
Question 17 Report
When an input signal 1 is applied to a NOT gate, the output is ..................
Answer Details
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 18 Report
CRACKING comes under _________
Answer Details
CRACKING is a type of computer crime. It refers to the unauthorized access and manipulation of computer systems or networks. Cracking is usually done by malicious individuals with the intention of stealing information, causing damage or disrupting services. It is different from hacking, which is the process of finding vulnerabilities in computer systems in order to improve their security. Crackers use a variety of techniques, including exploiting security weaknesses, stealing passwords, and installing malware. Cracking is a serious offense that can result in legal consequences, including fines and imprisonment. To protect against cracking, it is important to use strong passwords, keep software up-to-date, and use antivirus software.
Question 19 Report
Which computer accessory is both an input and output device?
Question 20 Report
When does the output of a NAND gate =1?
Answer Details
The output of a NAND gate is equal to 1 only when one input is 0. The NAND gate is called a "NOT-AND" gate because it outputs the opposite of what an AND gate would output for the same inputs. In other words, if an AND gate would output 1 for a certain set of inputs, a NAND gate would output 0, and vice versa.
Question 21 Report
Word processor, spreadsheets, database, graphics and presentation software are all examples of?
Answer Details
Word processor, spreadsheets, database, graphics and presentation software are all examples of application packages. Application packages are software programs designed to perform specific tasks or functions for the user. They are also known as "applications" or "apps" for short. Each of the software examples mentioned - word processor, spreadsheets, database, graphics, and presentation software - have a specific function and are designed to make tasks related to those functions easier for the user. For instance, a word processor is designed to create, edit and format text documents, while a spreadsheet program is designed to perform calculations and data analysis. Database software is designed to store, organize and retrieve large amounts of data, while graphics software is designed to create and edit visual elements such as images and videos. Presentation software is designed to create slideshows and presentations. Overall, application packages are a type of software that provides users with specific tools to perform tasks more efficiently and effectively.
Question 22 Report
Which of the following system software resides in the main memory always?
Answer Details
The system software that always resides in the main memory is the Operating System (OS). In many operating systems, the loader resides permanently in memory. The OS manages the resources of the computer and acts as an interface between the user and the hardware. It is responsible for tasks such as memory management, process management, file management, and input/output operations. Text editors, assemblers, linkers, and loaders are all types of system software, but they do not always reside in the main memory. They are typically loaded into memory when needed, and can be swapped out of memory when other processes need more memory. This is because main memory is a limited resource and the OS dynamically allocates it to different processes as needed.
Question 23 Report
What is the permanent memory built into your computer called?
Answer Details
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 24 Report
An inventory management program can assist with ________
Answer Details
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 25 Report
What kind of data is processed by an analog computer?
Answer Details
An analog computer is a type of computer that processes continuously varying data. This means that it is designed to work with data that changes smoothly and continuously over time, rather than data that is discrete or intermittently changing. For example, an analog computer could be used to solve complex mathematical equations or simulate physical systems that involve continuous variables, such as temperature, pressure, or velocity. These types of systems can be difficult to model using digital computers, which work with discrete values that are represented by binary digits (bits). Analog computers use physical components, such as resistors, capacitors, and amplifiers, to process the input data. These components are connected in circuits that can perform mathematical operations, such as addition, multiplication, and integration. The output of an analog computer is also a continuous signal that can be measured and displayed using analog devices, such as oscilloscopes and chart recorders. Overall, analog computers are useful for solving problems that involve continuous data and require high-speed processing. However, they are less versatile than digital computers and can be more difficult to program and maintain.
Question 26 Report
A collection of facts and figures is known to be _________
Answer Details
The correct answer is "Data". Data refers to a collection of facts, figures, or information that can be processed or analyzed to gain insights or make informed decisions. Data can come in different forms, such as numbers, text, images, audio, or video. It can be stored in various formats, including spreadsheets, databases, documents, or files. For example, if you have a list of customer names, addresses, and phone numbers in a spreadsheet, this is considered data. If you store this information in a database, it becomes a structured collection of data that can be easily accessed and manipulated. However, whether the data is sequenced or structured depends on how it is organized, and it is not a defining characteristic of data itself.
Question 27 Report
Which type of network is usually contained inside one office building?
Answer Details
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 28 Report
Which part of a laptop serves the same function as a mouse?
Answer Details
The touchpad of a laptop serves the same function as a mouse. A touchpad is a flat surface on the laptop that you can slide your finger on to move the cursor on the screen. Just like a mouse, you can use the touchpad to select, click, and scroll. It provides an alternative to using a traditional mouse for navigation on the laptop.
Question 29 Report
What is the full form of CU?
Answer Details
The term "CU" can have different meanings depending on the context. Here are some possibilities: 1. Compound Unit: This term does not have a widely recognized meaning in the field of computing or technology in general. However, "compound" can refer to something that is made up of multiple parts, so in some cases, "CU" could be used to refer to a unit that is composed of several components. 2. Communication Unit: In some contexts, "CU" may refer to a Communication Unit. This could be a device or module that is responsible for handling communication between different components or systems, such as transmitting data between a computer and a peripheral device like a printer or scanner. 3. Computer Unit: "CU" could also refer to a Computer Unit, which may be a standalone computer or a component within a larger computer system. In this case, "CU" would generally refer to the main processing unit that is responsible for executing instructions and performing calculations. 4. Control Unit: In the context of computer architecture, "CU" most commonly stands for Control Unit. The Control Unit is a component within the CPU (Central Processing Unit) of a computer that is responsible for coordinating the flow of data between different parts of the CPU and executing instructions. The Control Unit is sometimes referred to as the "brain" of the CPU, as it is responsible for coordinating and directing the operations of the computer. So, to answer the question of what the full form of "CU" is, we would need to know the specific context in which the term is being used.
Question 31 Report
he binary system has the radix of ________
Answer Details
The binary system has a radix of 2. The radix of a number system is the number of unique digits used in that system. For example, in the decimal system (base 10), the radix is 10, because we use 10 unique digits (0 to 9) to represent numbers. In the binary system (base 2), the radix is 2, because we only use 2 unique digits: 0 and 1. This means that every number can be represented as a combination of only 0s and 1s in the binary system.
Question 32 Report
Numerous files are referred to as _____________
Answer Details
Numerous files are referred to as "files". A file is a collection of data or information that is stored on a computer or other electronic device. Files can come in many different formats, such as documents, images, music, and videos. They are used to store information that can be easily accessed, edited, and shared. For example, a word processing document is a type of file that can be used to write and edit text, while an image file can be used to store and display photos. Files are often organized into folders, which are like virtual folders or directories that help you keep your files organized and easily accessible. You can create folders, move files between folders, and even rename or delete files and folders.
Question 33 Report
Why is the base 10 system unique?
Answer Details
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 34 Report
Storage which retains data after power cut off is called.
Answer Details
The type of storage that retains data even when the power is turned off is called non-volatile storage. Non-volatile storage is different from volatile storage, which loses all data when the power is turned off. To help you understand the difference, imagine that you have two types of memory: a whiteboard and a notebook. The whiteboard is like volatile memory because anything you write on it will disappear as soon as you erase it or turn off the lights. On the other hand, the notebook is like non-volatile memory because anything you write in it will remain there until you deliberately erase or destroy it. Similarly, non-volatile storage, such as hard drives, solid-state drives (SSDs), and flash drives, can retain data even when the power is turned off. This is because the data is stored using physical means that do not require an electrical charge to be maintained. In contrast, volatile storage, such as RAM, loses all data when the power is turned off because the data is stored using electrical charges that require a constant supply of power to be maintained. Overall, non-volatile storage is essential for long-term data storage because it can retain data even in the absence of power, whereas volatile storage is useful for short-term storage of data that does not need to be preserved beyond the current session or power cycle.
Question 35 Report
Which of the below-mentioned reasons do not satisfy the reason why people create a computer virus?
Answer Details
The reason "protection" does not satisfy why people create a computer virus. This is because a computer virus is not created to protect a system or its data, but rather to cause harm to it by spreading and infecting other systems. Creating a virus goes against the goal of protecting a computer system, and instead puts it at risk.
Question 36 Report
Computer software can be classified into how many parts?
Answer Details
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 37 Report
A tier in which the database resides along with the query processing language is called
Answer Details
The tier in which the database resides along with the query processing language is called the data tier. In software architecture, the data tier is one of the three layers of a typical multi-tier architecture, with the other two being the presentation tier (dealing with the user interface) and the application tier (containing the business logic). The data tier is responsible for managing the storage and retrieval of data, as well as the processing of queries that operate on that data. The data tier typically consists of one or more database management systems (DBMS), which are specialized software systems designed to manage large amounts of structured data. The DBMS provides a structured way to store data and a language for querying and manipulating that data, such as SQL (Structured Query Language). In summary, the data tier is the layer in a multi-tier software architecture where the database resides, and where queries are processed using a specialized query language like SQL. It is responsible for managing the storage and retrieval of data in an efficient and secure manner.
Question 38 Report
The acronym from DATABASE MANAGEMENT SYSTEM is ________________
Answer Details
The acronym for DATABASE MANAGEMENT SYSTEM is DBMS, which stands for "Database Management System". A database is an organized collection of data that can be stored, accessed, and managed easily. However, managing large amounts of data can be complicated, which is where a Database Management System comes in. A DBMS is a software system that allows users to create, modify, and manipulate databases. It provides tools to organize and store data efficiently, as well as tools to retrieve and analyze that data. In summary, DBMS is an abbreviation for Database Management System, a software system used to manage and organize data efficiently.
Question 39 Report
The memory unit receives data and information from which unit?
Question 40 Report
Which of the memories must be refreshed many times per second?
Answer Details
Out of the given options, Dynamic RAM (DRAM) must be refreshed many times per second. DRAM is a type of computer memory that stores data in a capacitor within each memory cell. The capacitor can hold a charge, representing either a 0 or 1, but it gradually leaks over time, meaning that the data will eventually fade away. To prevent this data loss, the memory controller sends a refresh command to the DRAM chip many times per second. This refresh command recharges the capacitors in the memory cells to maintain the data stored in them. In contrast, Static RAM (SRAM) does not require refreshing, as it uses a different type of storage element that does not leak charge like a capacitor. EPROM and ROM are non-volatile memory types, meaning that they retain data even without power, and do not require refreshing.
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