Operating System Knowledge Quiz

The given statement is true. An operating system is indeed a software that acts as an intermediary between the hardware layer of a computer system and the user. It manages and controls the hardware resources, provides a user interface for interaction, and allows users to run applications and perform various tasks on the computer. Without an operating system, it would be difficult for users to communicate with the hardware directly, making it an essential component of any computer system.

RAM stands for Random Access Memory and it is a type of storage unit in a computer. It is used to temporarily store data that is actively being used by the computer's operating system and applications. Unlike the hard drive, which is a permanent storage unit, RAM is volatile and loses its data when the computer is turned off. Therefore, RAM is responsible for providing fast and temporary storage for data that needs to be quickly accessed by the computer's processor.

The given statement suggests that if a device has a CPU, RAM, ROM, HDD, and an operating system (OS), it can be classified as a computer. This is true because these components are essential for a device to perform computing tasks. The CPU is responsible for executing instructions, RAM provides temporary storage for data, ROM stores firmware and permanent instructions, HDD allows for long-term storage of data, and the OS manages the device's resources and provides a user interface. Therefore, having all these components makes the device capable of functioning as a computer.

The statement is false because there are more than four types of operating systems used in systems. Some examples of operating systems include Windows, macOS, Linux, iOS, Android, etc. Therefore, the given statement is incorrect.

Mobile devices mostly use ARM CPUs because ARM processors are designed specifically for low-power consumption, making them ideal for portable devices like smartphones and tablets. ARM CPUs are known for their efficiency and performance, allowing mobile devices to run smoothly while conserving battery life. Additionally, ARM architecture is widely supported by various operating systems and has a strong ecosystem of software and hardware developers, making it a popular choice for mobile device manufacturers.

The correct answer is Command Line Interface (CLI). A command line interface allows users to interact with the operating system by typing commands into a terminal or console. It is a text-based interface that provides more control and flexibility compared to graphical user interfaces. Users can execute commands, navigate through directories, manage files, and perform various tasks using specific commands and syntax. CLI is commonly used by advanced users, system administrators, and developers who prefer the efficiency and power of a text-based interface.

The statement is false because HDD (Hard Disk Drive) is a permanent storage device, while a memory stick (USB flash drive) is a removable storage device. Both devices can store data, but HDD retains the data even when the power is turned off, making it a non-volatile storage device. On the other hand, a memory stick is a volatile storage device, meaning it requires power to retain the data.

The correct answer is Server Operating System. DHCP, Mail, File Service, etc. are typically provided by server software, which requires a server operating system to run. A server operating system is specifically designed to handle the demands of serving multiple clients and managing network resources. It provides features like centralized administration, security, scalability, and performance optimization, making it suitable for hosting services like DHCP, mail servers, and file servers.

RAID 0, also known as RAID0 or Raid 0, is the only RAID type without fault tolerance. In RAID 0, data is striped across multiple drives, which improves performance by allowing simultaneous read and write operations. However, since there is no redundancy or mirroring of data, if one drive fails, the entire array becomes inaccessible, resulting in data loss. Therefore, RAID 0 does not provide any fault tolerance or data protection.

When a new device is added to a system and the firmware in ROM does not recognize it, a software program needs to be installed or written to enable communication between the device and the system. This software program is called a device driver. It acts as a bridge between the hardware device and the operating system, allowing them to communicate and work together seamlessly.

The correct answer is 5 units (Input unit, output unit, processing unit, storage unit, and power supply unit). This answer includes all the essential components of a computer device. The input unit is responsible for receiving data, the output unit displays the processed information, the processing unit performs calculations and executes instructions, the storage unit stores data and programs, and the power supply unit provides the necessary electrical power to the computer.

Embedded OS is the correct answer because IP cameras, setup boxes, TVs, and phones are all examples of devices that require a specialized operating system that is specifically designed to run on low-power, resource-constrained hardware. Embedded operating systems are lightweight, efficient, and optimized for the specific tasks and functions of these devices. They are typically built to provide real-time performance, stability, and security, making them ideal for use in embedded systems like IP cameras, setup boxes, TVs, and phones.

The given answer is false because Window OS is not an example of open source. Open source refers to source code that is freely available and can be modified and distributed by anyone. However, Windows OS is a proprietary operating system developed by Microsoft, and its source code is not freely available for modification.

Firmware is a program that is stored in ROM (Read-Only Memory) chip set. ROM is a type of memory that retains data even when the power is turned off, making it ideal for storing permanent software instructions like firmware. Unlike RAM (Random Access Memory) which is volatile and loses data when power is lost, ROM is non-volatile and provides a stable storage medium for firmware. Therefore, the correct answer is ROM chip set.

RAID (1+0) is the correct answer because it provides good performance for both read and write operations. In RAID (1+0), also known as RAID 10, data is striped across multiple mirrored pairs of drives. This allows for simultaneous read and write operations, improving performance. Additionally, RAID (1+0) requires an even number of drives, which ensures that there is an equal distribution of data across the drives. This further enhances performance as data can be accessed from multiple drives simultaneously.

The given statement is false. HP Server is not a reduce instruction set computer device (RISC). It is a complex instruction set computer (CISC) device. RISC architecture uses a simplified set of instructions, while CISC architecture uses a more complex set of instructions.

EPROM (Erasable Programmable ROM) is the correct answer because it can be erased and reprogrammed multiple times. Unlike other types of ROM, EPROM can be erased by exposing it to ultraviolet light, which allows it to be reprogrammed with new data. This makes EPROM a versatile and flexible option for storing and updating programs. PROM (programmable ROM) can only be programmed once and cannot be erased or reprogrammed. EEPROM (Electrically EPROM) can be erased and reprogrammed electrically, but it requires a higher voltage compared to EPROM. Flash memory is a type of non-volatile memory that can be electrically erased and reprogrammed, making it suitable for use in devices like USB drives and solid-state drives.

Firewall, TV, and Router are not computer types. They are devices used in computer networks. A Reduce Instruction Set Computer (RISC) is a type of computer architecture that uses a small set of simple instructions, which allows for faster processing and better performance.

The question is asking about the number of types of computers when "summize" or summarizing them. The correct answer is 3 because the question is asking for the number of types, not the actual types themselves. Therefore, the answer is not referring to any specific types of computers, but rather the quantity of types.

Input devices, output devices, and other computer devices need to join the motherboard or mainboard in order to install the operating system. The motherboard is the main circuit board of a computer, which connects all the different components together and allows them to communicate with each other. It provides the necessary connections and interfaces for devices to be connected and for the operating system to be installed and run properly.