UGC NET Questions (Paper – 1)

For n-bit two's complement representation, the range is −2^(n−1) to 2^(n−1) − 1. With n = 8, this evaluates to −2⁷ to 2⁷ − 1, i.e., −128 to +127. One more negative value is representable than positive due to the asymmetry in the coding. Thus, the range of 8-bit two's complement integers is −128 to +127.

Option A:
Option A correctly applies the general formula for two's complement bounds. It recognises that 10000000₂ encodes −128 and 01111111₂ encodes +127, covering all 256 possible bit patterns.

Option B:
Option B, −127 to +127, omits the extra negative value and would imply a redundant representation or a symmetric sign-magnitude system. This does not match two's complement behavior.

Option C:
Option C, −128 to +128, includes 257 distinct integers, which exceeds the 256 patterns available in 8 bits. It therefore cannot be the valid range.

Option D:
Option D, −127 to +128, is both shifted and symmetric in a way that is inconsistent with two's complement encoding. It incorrectly adds a positive value that is not representable.

The digital divide describes disparities in access to devices, connectivity and digital skills across social and geographic groups. This gap can reinforce existing economic and educational inequalities. Policy efforts often focus on reducing the digital divide through infrastructure and training programmes. Thus, the missing word in the phrase is divide.

Option A:
Option A is correct because the widely used term digital divide precisely captures the inequality in ICT access highlighted in the stem. It is a key concept in ICT and development discussions.

Option B:
Option B, literacy, refers to the ability to read, write or use digital tools, and while related, it does not complete the standard phrase used in the literature.

Option C:
Option C, footprint, is associated with the data trail left by users online and not with inequality in access.

Option D:
Option D, piracy, concerns unauthorised copying of software or digital media and does not describe gaps in access to ICT.

DIKSHA provides a repository of digital resources aligned with school curricula and supports professional development for teachers. It uses QR codes in textbooks to link physical books with digital content. The platform is a key ICT initiative for school level education. Hence, the correct name for the portal mentioned is DIKSHA.

Option A:
Option A is correct because DIKSHA is officially recognised as the national platform for school education and teacher resources.

Option B:
Option B, SWAYAM Prabha, refers to DTH channels and not primarily to QR linked digital textbook content.

Option C:
Option C, Shodhganga, is a thesis repository for research scholars, not a school education portal.

Option D:
Option D, e ShodhSindhu, is a consortium for e journals and resources in higher education libraries.

Domain names such as “jrfnet.com” are human-friendly labels, while IP addresses are numerical identifiers used by routers and hosts. The Domain Name System (DNS) maps each domain name to its corresponding IP address so that when users type the name, the network can route packets to the correct server.

Option A:
This option correctly explains that DNS translates readable domain names into numerical IP addresses. Users work with names, but machines rely on the mapped IP numbers for routing packets on the Internet.

Option B:
This statement is false because domain names and IP addresses have different formats and purposes. A domain like “jrfnet.com” is not the same string as its numeric address, and the two are not interchangeable.

Option C:
Domain names are specifically designed to identify online resources such as websites, mail servers and other services. They are not labels for offline printed books, so this option misunderstands their role.

Option D:
IP addresses are stored in devices and routing tables and are actively used in communication. They are not just written on paper, so claiming they exist only on paper is incorrect.

Statements A, B and D accurately describe responsible handling of digital resources, whereas C encourages plagiarism. Citations and DOIs help readers locate original sources and acknowledge authors, and reference managers simplify correct formatting. Access being free does not remove the obligation to credit sources, so C is not acceptable. The correct combination is therefore A, B and D only.

Option A:
Option A is correct because it combines all the true statements that reflect ethical and practical aspects of digital referencing and excludes the permissive view in C. It matches academic standards emphasised in research methodology and ICT use.

Option B:
Option B is incomplete because it includes only A and B and omits D. Recognising DOIs as persistent identifiers is important for locating and citing digital scholarly work, so excluding D gives a partial answer.

Option C:
Option C is incomplete because it lists only B and D and leaves out A. Statement A contains the central ethical rationale for citations and should not be omitted.

Option D:
Option D is incorrect because it treats all four statements as correct and hence accepts C. Since C normalises copying without attribution, this option conflicts with academic integrity.

Cloud computing provides scalable computing resources over networks without requiring users to manage physical servers. In education, this often appears as web based learning systems and storage services that can be reached from any connected device. The scenario described shows both applications and data residing on remote infrastructure. This is a clear example of academic cloud use.

Option A:
This option correctly reflects the on demand, network based access characteristic of cloud computing. It implies central management, easier collaboration and reduced local maintenance, which are key motivations for universities to adopt cloud services.

Option B:
Storing all data on a personal pen drive is a local and fragile solution. It lacks redundancy, collaboration features and remote accessibility that cloud services offer.

Option C:
Typewriters and filing cabinets represent purely manual processes and do not use shared virtual resources. They are the opposite of cloud based systems.

Option D:
Writing only on chalkboards creates no digital trail and cannot be accessed remotely. It does not exhibit any properties of cloud computing.

Statements A, B and C correctly summarise three important digital initiatives, while statement D is incorrect. These platforms extend ICT-based resources to learners at different levels and often include teacher training modules as well. The claim that such initiatives always exclude teacher training does not match actual practice. Hence, the combination A, B and C only is the correct set of statements.

Option A:
Option A is correct because it includes all three true statements about SWAYAM, NPTEL and e-PG Pathshala, and excludes the false one. It recognises the scope of these initiatives in expanding ICT-enabled higher education. By rejecting D, it remains consistent with national policy directions.

Option B:
Option B is incorrect because it lists only A and B and omits C. Statement C is also true in describing e-PG Pathshala’s focus on postgraduate content. Any correct answer should include all three valid descriptions.

Option C:
Option C is incorrect because it groups B, C and D as correct, thus accepting D. Statement D wrongly suggests that teacher training is always excluded, which is contrary to many ICT-based faculty development efforts. Including D invalidates the combination.

Option D:
Option D is incorrect because it assumes all four statements are correct. Since D is incorrect, this set cannot be accepted as the correct answer.

Statements A, B, D and E describe sound practices in digital content curation, emphasising purposeful selection, organisation and contextualisation. Teachers must align resources with learning outcomes and student characteristics, and tags help manage collections. Statement C is false because copyright and licensing restrictions still apply to online materials. Statement F is also false since evaluating the credibility and authority of sources is central to responsible curation, so the correct set keeps only A, B, D and E.

Option A:
Option A is correct because it encapsulates the pedagogical and organisational aspects of curation without ignoring ethical and quality considerations. It properly omits the assumptions that everything online is free to use and that credibility checks are unnecessary. This reflects how teachers are expected to handle digital materials in formal education.

Option B:
Option B is incorrect because it includes C, implying that search-engine discovery automatically implies unrestricted reuse. This ignores copyright law and open licensing conditions, and therefore the presence of C makes the combination invalid.

Option C:
Option C is incorrect because it includes F, which downplays the need for evaluating sources. Even though A, D and E are true, accepting F contradicts basic information literacy principles. This mixture of correct and incorrect statements cannot be accepted.

Option D:
Option D is incorrect because it also includes F and omits A. Without A, the very definition of curation is not stated, and adding F suggests teachers need not worry about source reliability. Thus this option fails both conceptually and ethically.

Collaborative writing involves multiple contributors working together to produce a shared text, often negotiating content and revising each other's contributions. Online tools like shared documents and wikis make this process more visible and synchronous. Such practices align with constructivist views of knowledge construction. Hence, the joint editing described in the stem is collaborative writing.

Option A:
Option A, competitive, would emphasise individuals working against each other, which is the opposite of shared authorship.

Option B:
Option B is correct because the defining characteristic of collaborative writing is joint ownership and editing of the same document, which is enabled by the online tools mentioned.

Option C:
Option C, solitary, describes writing done by a single individual without input from others and does not fit the described activity.

Option D:
Option D, secretive, suggests hidden or confidential work rather than open co-editing among peers.

Statements A, B, D, E and F express a supportive and ethical approach to learning analytics, while C is clearly inappropriate. Dashboards and early alerts can guide students and teachers, but data must be interpreted in context rather than in a mechanical way. Encouraging goal setting and being transparent about data practices align with learner-centred analytics. Using analytics solely for surveillance and punishment contradicts recommended practice, hence C is excluded.

Option A:
Option A is incorrect because it omits B, which refers to instructors using analytics to identify low engagement and support students. Without B, the set misses an essential supportive use.

Option B:
Option B is incorrect because it omits D, which stresses contextual interpretation of analytics data. Without D, the set underplays how analytics must be understood in context.

Option C:
Option C is incorrect because it omits A, which notes that dashboards can show students their progress. Excluding A makes the set incomplete.

Option D:
Option D is correct because it brings together progress visualisation, early support, context-aware interpretation, student self-regulation and ethical transparency. It rejects C’s punitive-only view, providing a balanced and learner-focused perspective on analytics.

Converting binary 1010 to decimal involves using positional weights of powers of 2. From right to left, the bits represent 1, 2, 4 and 8. The pattern 1010 has 1 in the 8's place and 1 in the 2's place, giving 8 + 2. Thus the decimal value is 10, making Option B correct.

Option A:
Option A corresponds to the binary pattern 1000, which equals 8 in decimal. While 8 is one of the place values used in the calculation, it alone is not sufficient to represent 10. Therefore, Option A is incomplete and incorrect.

Option B:
Option B is correct because 1010₂ means 1×8 + 0×4 + 1×2 + 0×1. This sums to 8 + 2 = 10. The value matches the required decimal equivalent of the given binary number.

Option C:
Option C refers loosely to 1100₂ if interpreted, which equals 8 + 4 = 12, not 10. Even if we do not map directly, 12 is clearly different from 10 and therefore cannot be the correct answer.

Option D:
Option D suggests 14, which would correspond to 1110₂ equal to 8 + 4 + 2. Since our binary number does not have three consecutive ones, 14 cannot be its decimal value.

Green computing seeks to minimise the environmental impact of ICT through energy-efficient use, responsible procurement and safe disposal. Using power-saving features like sleep mode reduces electricity consumption, while certified e-waste recycling prevents toxic substances from entering the environment. Together, these actions contribute to sustainability without sacrificing functionality.

Option A:
Keeping devices powered on unnecessarily wastes energy and contributes to higher carbon emissions and electricity costs. It contradicts the goals of efficiency and conservation.

Option B:
Printing every document increases paper consumption and may lead to storage and disposal problems. Digital archiving and selective printing are more sustainable approaches.

Option C:
This option correctly combines energy management with environmentally sound end-of-life handling. It reflects an institutional commitment to both operational and ecological responsibility in ICT use.

Option D:
Rapidly discarding gadgets in regular waste streams increases e-waste and exposes workers and ecosystems to hazardous materials. It is the opposite of green computing.

Cloud storage services allow users to upload files to remote servers managed by providers and access them from various locations and devices. This model supports collaboration and mobility, as changes made on one device can synchronise to others. It also reduces dependence on local hardware. As such, the term used to describe this type of storage is cloud storage.

Option A:
Option A, optical, storage involves physical discs such as CDs and DVDs and does not inherently support multi device online access.

Option B:
Option B, local, storage refers to devices directly attached to a computer, such as internal hard drives, which lack the anywhere access provided by the internet.

Option C:
Option C is correct because cloud storage is the established term for remote, internet based data storage that can be accessed from multiple devices.

Option D:
Option D, magnetic, storage usually denotes technologies like hard disks and tapes and does not emphasise network based accessibility.

Statement D is the only wrong statement because social media content is not inherently reliable and must be verified. Statements A, B and C correctly recognise potential distraction, privacy risks and the need for critical evaluation. Accepting everything posted online as true encourages misinformation and poor academic practice. Therefore the option that selects only D as wrong is the correct answer.

Option A:
Option A is incorrect because it includes A and D as wrong statements. A is true, since excessive social media use can reduce time and attention available for academic work. Mixing this correct statement with the false one in D invalidates the option.

Option B:
Option B is incorrect because it labels A, B and D as wrong. Both A and B accurately describe common risks relating to distraction and privacy. Only D suggests uncritical acceptance of content, so treating A and B as wrong misrepresents the issues.

Option C:
Option C is correct because it isolates D as the sole incorrect statement and affirms that A, B and C express legitimate concerns and skills. It reinforces the importance of verification in digital literacy.

Option D:
Option D is incorrect because it groups B, C and D as wrong statements. B and C are accurate in highlighting privacy dangers and the need for critical thinking, so this combination confuses good practice with bad.

Statements A, B and D correctly characterise typical roles of firewalls and IDS in network security, whereas C is an unrealistic claim. Firewalls enforce access control policies and IDS tools generate alerts, but no single device can guarantee perfect security. Defence-in-depth recognises the need for multiple layers of protection, procedures and monitoring. Consequently, the combination that includes A, B and D but not C is the only accurate choice.

Option A:
Option A is incomplete because it lists only A and B and omits D. Without mentioning defence-in-depth, one might wrongly assume that firewalls and IDS alone are sufficient, ignoring the multi-layered strategies recommended in practice.

Option B:
Option B is incorrect because it includes A, B and C and thereby accepts C. The assertion that a firewall always guarantees safety ignores new threats, misconfigurations and insider risks, so this combination cannot be accepted.

Option C:
Option C is correct because it captures the complementary functions of firewalls and IDS and acknowledges that they must be part of a broader security architecture. By excluding C, it rejects the mistaken belief in absolute protection through a single device.

Option D:
Option D is incomplete because it groups B and D only and leaves out A. Statement A provides the basic definition of what a firewall does, and its omission makes the combination conceptually incomplete.