UGC NET Questions (Paper – 1)

The operating system mediates interactions between users and hardware by providing a user-friendly environment and standardised services. Users issue commands via graphical or command interfaces, and the OS translates these into low-level hardware instructions. It shields users from the complexity of device management and memory handling. Hence it functions as an interface between the user and the hardware.

Option A:
Option A, a compiler, translates high-level programming code into machine code but does not manage overall user interaction with the system. It is a development tool that itself runs under the operating system. Therefore it cannot be regarded as the primary interface.

Option B:
Option B, network protocol, specifies rules for communication between networked devices. Protocols operate at communication layers and are implemented within or above the OS, but they are not themselves the general interface for all user–hardware interaction.

Option C:
Option C, firewall, is a security component controlling network traffic and is often implemented as part of system software. However, it plays a protective role rather than providing a broad user interface to all hardware resources.

Option D:
Option D is correct because the OS presents menus, windows and commands that allow users to control programs and hardware without dealing directly with low-level details. This intermediary role is accurately summarised as acting as an interface.

An operating system is a core system software that controls and coordinates the use of hardware among various application programs. It allocates processor time, manages memory, handles input-output operations and maintains file systems. It also provides a user interface through which users interact with the computer. Therefore, the description in this option accurately summarises the OS role.

Option A:
This option treats the operating system as just another application like a word processor or presentation tool. In reality, applications run on top of the OS and depend on it for hardware access. Thus, this description confuses application software with system software.

Option B:
This option misclassifies the operating system as a physical input device, such as a keyboard or mouse. The OS is not a tangible hardware unit but a collection of programs. Hence, the option is conceptually incorrect.

Option C:
This option confuses operating systems with communication protocols like SMTP or IMAP used for email transfer. Protocols are standards for data communication, whereas the OS is responsible for managing the overall functioning of the computer system.

Option D:

Statements A, B and D accurately describe key responsibilities of an operating system, whereas C is false. The operating system allocates and coordinates hardware resources, provides user interfaces and manages files in storage. These functions are present on desktops, laptops and mobile devices alike. Statement C wrongly restricts operating systems to mobiles, ignoring widely used desktop and server operating systems. Thus, the correct set is A, B and D only.

Option A:
Option A is correct because it collects all the true statements regarding OS roles and correctly excludes C. It shows that operating systems are central to controlling hardware, providing interaction and organising files across different computing platforms.

Option B:
Option B is incorrect because it lists A and D only, leaving out B. While resource and file management are crucial, the user interface is also a primary function of modern operating systems and should not be omitted.

Option C:
Option C is incorrect because it treats B, C and D as correct, thereby accepting C. Since C contradicts the existence of desktop OS like Windows, Linux and macOS, this option cannot be considered accurate.

Option D:
Option D is incorrect because it assumes all four statements are correct and so accepts C. Including a clearly false claim about where operating systems are used invalidates the entire combination.

Statements A, B and D correctly describe core functions of an operating system, while statement C is false. The operating system does manage memory, processes and I/O, it offers a user interface, and it handles files and directories. It is not a specialised text-editing application, so describing it as such is misleading. Thus, the combination that includes A, B and D but excludes C is the only correct answer.

Option A:
Option A is incorrect because it includes only statement A and ignores B and D. Although statement A is true, the question asks for all correct statements, and both B and D also describe essential operating system functions. Leaving these out makes the option incomplete.

Option B:
Option B is incorrect because it combines A and B but omits D. Statements A and B are indeed correct, but D is also accurate in attributing file management to the operating system. Since one true statement is missing, this option does not provide the full set of correct statements.

Option C:
Option C is correct because it brings together A, B and D, which are all true. It excludes statement C, which wrongly claims that an operating system is just an application for text editing. By including all and only the correct statements, this option matches the conceptual role of operating systems in ICT.

Option D:
Option D is incorrect because it includes statement C along with B and D. While B and D are true, C misrepresents the nature of an operating system. Including a false statement means the combination cannot be considered fully correct.

An operating system coordinates activities of hardware components, allocates resources to programs and offers services like file management and user interfaces. It enables application software to run without needing to control hardware directly. Because of these central responsibilities, it is often described as the backbone of the computer system. Therefore, the term that completes the statement is operating system.

Option A:
Option A, compiler, translates high level language programs into machine code but does not manage hardware or provide a general user interface.

Option B:
Option B is correct because operating systems such as Windows, Linux and macOS are specifically defined as system software that manage resources and serve as intermediaries between user and hardware.

Option C:
Option C, interpreter, executes source code line by line but again is an application tool rather than the overarching management software.

Option D:
Option D, device driver, is specialised software that allows the OS to communicate with particular hardware devices, not the full management layer itself.

The operating system is the core system software that coordinates interactions between hardware and application programs. It handles tasks such as memory allocation, process scheduling, file management and device control. Without an operating system, most applications cannot run effectively. Hence, the managing software described in the stem is the operating system.

Option A:
Option A is correct because definitions of operating systems consistently emphasise resource management and service provision for applications. Examples include Windows, Linux and macOS, all of which perform the roles listed in the question.

Option B:
Option B, word processor, is a specific application for creating and editing documents and does not manage hardware resources. It itself depends on the operating system to function.

Option C:
Option C, browser extension, is an add-on module that enhances browser capabilities and cannot perform system-wide resource management.

Option D:
Option D, device driver, is a specialised program that allows the operating system to communicate with a specific hardware component, but it is not the overarching manager of all resources.

Hyperlinks are the core mechanism that connects web pages and resources on the World Wide Web. They associate visible text or images with destination addresses so that clicking them loads another page, file or section, enabling non-linear navigation and quick access to related information.

Option A:
This option incorrectly attributes increased storage capacity to hyperlinks. Storage depends on hardware like hard drives or SSDs, not on elements embedded in web pages.

Option B:
Shutting down the browser on every mouse movement would be a serious malfunction, not a feature of hyperlinks. Hyperlinks only respond when they are activated by a click or keyboard action.

Option C:
This option correctly highlights that hyperlinks are clickable and that they take users to another location on the same page, another page or even a different site, matching actual web navigation.

Option D:
Virus cleaning is the job of security and antivirus software, not of hyperlinks. Hyperlinks simply point to locations and do not themselves perform system maintenance.

A screenshot records exactly what appears on the screen at a given moment, preserving the arrangement of windows and content. It is useful for documenting errors, creating tutorials or saving visual information. Most operating systems provide built in shortcuts or tools for taking screenshots. Hence, the captured display image is called a screenshot.

Option A:
Option A, bookmark, saves the address of a web page for later access and does not capture its visual appearance.

Option B:
Option B is correct because screenshot is the widely used term for an image of the screen taken by software rather than a camera.

Option C:
Option C, hyperlink, refers to a clickable reference that navigates to another resource, which is unrelated to image capture.

Option D:
Option D, wallpaper, is the background image displayed on the desktop, not a capture of current screen contents.

A monitor presents processed information visually, enabling users to see the results of their commands and programs. It does not capture data from the environment; instead, it outputs data from the computer system. In hardware classification, such devices are called output devices. Therefore, the appropriate term for the blank is output.

Option A:
Option A, input, describes devices that feed data into the computer rather than showing results to the user, so it does not match the function of a monitor.

Option B:
Option B is correct because a monitor's primary role is to output information, and ICT textbooks consistently list it under output devices.

Option C:
Option C, storage, suggests long term retention of data, which is not the function of a screen.

Option D:
Option D, network, refers to communication components that connect computers and does not describe a display unit.