KnowledgeGate AI Blog
Notes, strategy & exam updates
Written by the educators behind KnowledgeGate AI — organised by topic, refreshed when syllabi move, free to read.
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Service-based companies placement prep: Accenture, Capgemini and Cognizant compared
Most students sitting campus and off-campus drives apply to several service-based companies in the same window. Accenture, Capgemini and Cognizant all recruit freshers in large numbers, their tests overlap heavily, and yet each has one or two quirks that trip up candidates who prepared for a generic "aptitude and coding" test.
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GATE CS Preparation30 articles
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IPv4 Header and Fragmentation for GATE: Offset, MTU and TTL Numericals Solved
Decode the IPv4 header, split a 4000-byte datagram across a 1500-byte MTU, and verify every offset, flag and fragment length.
CRC, Checksum and Hamming Code for GATE: Error Detection and Correction Numericals Solved
Work through CRC division, an Internet checksum, and Hamming(7,4) encoding and correction without losing marks to convention slips.
Three-Address Code, Quadruples and Triples for GATE: Intermediate Code Generation Solved
Translate a repeated arithmetic expression into six TAC instructions, then align every instruction with its quadruple and triple representation.
Placement Preparation123 articles
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One-Page Fresher Resume: Keep, Cut and Reorder Every Section
Use an evidence-first edit to turn a crowded fresher resume into a readable page, following Riya's complete budget and section decisions.
Infosys Assessment Recovery Plan: A 4-Week Schedule for Pseudocode, Puzzles and Verbal Ability
Use one diagnostic and a weekly reallocation rule to repair weak pseudocode, puzzle and verbal skills. Follow Riya through four weeks of worked practice.
Attention-to-Detail Questions: Tips for TCS-Style Placement Tests
Learn a controlled method for exact matches, record comparisons and visual anomalies, with worked examples and a practical accuracy-first routine.
MCQ Practice284 articles
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SQL Inner and Outer Join MCQs: 12 Solved Questions with Explanations
Solve 12 join MCQs, check each answer immediately, and learn the row-preservation and matching rules behind the result.
Ripple Counter MCQs: 12 Solved Questions on Modulus, States and Delay
Solve 12 ripple counter MCQs by reading the clock chain, calculating modulus and state movement, and adding propagation delays correctly.
Onto (Surjective) Function MCQs: 11 Solved Questions on Definition, Count and Properties
Solve six MCQs, one MSQ and four NAT questions on onto functions. Each answer explains the exact definition, proof or counting step you need.
CS Fundamentals259 articles
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First and Follow Sets Explained: Rules, Worked Example and LL(1) Checks
Learn a repeatable way to compute FIRST and FOLLOW sets, handle nullable suffixes, and use the results to test a grammar and fill its LL(1) parsing table.
Trees in Graph Theory: Properties, Eccentricity, Diameter, Radius and Center
Build every important tree metric from one eight-vertex example, then use structural tests, a distance table and the two-sweep method to check each answer.
Distributed Systems in Operating Systems: Clocks, Consistency and Worked Examples
Build a connected understanding of distributed systems through exact examples of duplicate RPC calls, logical clocks, leader election, replica quorums and block recovery.
Coding & Skills201 articles
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MERN Stack Resume Projects: 5 Ideas That Get Shortlisted, With Feature Checklists
Choose one credible MERN project, give it production-style features, and present it with the live demo, README and interview answers recruiters can verify.
PHP Learning Roadmap: Core Syntax to a Tested Laravel App
Follow a practical 12-week path from typed PHP and Composer to safe database access, feature tests and a Laravel rebuild, using one application throughout.
C++ Compiler Warnings and Sanitizers: Catch Bugs Early
Build a practical C++ safety net with strict warnings and sanitizer runs. Three small programs show how to find, explain and fix defects before they spread.
Govt Teaching Jobs104 articles
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HPSC PGT Computer Science: A Recurrence-Based Revision Order for the Subject Paper
Use topic recurrence from past HPSC PGT Computer Science papers to order revision, while keeping the official syllabus and current paper structure in control.
NIMCET Previous-Year Analysis: How Questions Split Across Maths, Reasoning and Computers
Read NIMCET papers as a distribution map, not a collection of isolated questions. Use recurring chapter families to decide what to master first.
HPSC PGT Computer Science Eligibility 2026: Degree, HTET and Age Rules, Explained
Check your degree route, teaching qualification, HTET status and age against the HPSC advertisement before you invest time in the application or subject preparation.
Teaching Eligibility Tests38 articles
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वर्णमाला (Varnmala) for Teaching Exams: स्वर, व्यंजन, मात्रा and Solved Classification
Build वर्णमाला from concepts, then classify nine consonants by place, voice and aspiration. Includes vowel signs, special symbols and an exam-use checklist.
समास (Samas) for Teaching Exams: Types, Vigraha and Worked Examples
Learn a repeatable way to classify Samas through vigraha, relation clues, प्रधानता and context, with Tatpurush markers, practice items and correction drills.
Pre-Independence Education Commissions for Teaching Exams: Timeline and Key Recommendations
Separate minutes, despatches, commissions, Acts and plans before memorising the dates. This guide builds the full timeline and solves a seven-item match.
Govt Jobs57 articles
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SSC CGL Cutoffs Explained: Compare Tiers, Posts and Categories
A practical test for deciding whether two SSC CGL cutoff figures are genuinely comparable, with completed-result examples and a worksheet for rejecting mismatched rows.
UP Police Computer Operator DBMS and SQL: Learn Tables, Keys and Queries with a Police-Records Database
Build one fictional police-records database from schema to SQL. Learn key types, relationships, 3NF, table constraints and exact query results from consistent data.
SSC CGL Mock Analysis: Build an Error Ledger That Guides Every Revision
Turn each useful mock error or delay into evidence, a focused drill, a retest date, and a clear decision to close or reopen the row.
Banking & Insurance99 articles
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IBPS Clerk State and Language Choice: Decide Before Applying
Choose an IBPS Clerk State or UT and listed language through three decision gates: location commitment, exact language match, and functional four-skill ability.
SBI PO Eligibility and Selection Process: Candidate Checklist
Use a dated SBI notification to audit age, qualification, category, Main appearances, selection stages, documents and the normalized final score.
IBPS SO Roles Compared: IT, Law, HR, Marketing or Agriculture?
Compare five IBPS Specialist Officer streams by qualification gate, subject base and likely work orientation, then test your shortlist with a weighted score and a 14-day study sample.
PSUs28 articles
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ISRO CS Scientist/Engineer Role: Projects, Testing and Career Growth
See how core CS knowledge can support a project lifecycle through a fictional telemetry monitor, from requirement and design to testing, review and maintenance.
ISRO CS Operating Systems PYQ Patterns: Scheduling, Memory and Deadlock Worked Step by Step
Learn four scratch-work methods for ISRO-style Operating Systems problems. Follow complete Round Robin, paging, LRU, semaphore and deadlock safety traces.
PSU Through GATE Choices: Compare Roles, Locations and Career Paths
Compare PSU opportunities through GATE using official evidence, a weighted decision matrix and a practical view of role fit, location and portable skills.
Railways11 articles
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RRB NTPC Posts Explained: Match Duties and Skill Tests to Your Preference Order
Compare the six graduate roles in CEN 06/2025 by typical duties, work setting, medical standard and skill stage. Then build a personal preference order using elimination and a weighted example.
RRB NTPC Normalisation and Cutoffs: Read Raw Marks, Percentile and RRB Score
Learn what raw marks, percentile, RRB Score and Normalized Marks mean, then use worked examples to compare your score with the correct cutoff row.
RRB NTPC PYQ Analysis: Separate CBT 1 Screening From CBT 2 Merit
Do not mix CBT 1 and CBT 2 questions in one notebook. Use separate ledgers to measure screening coverage, later-stage accuracy, error types and repair actions.
PG Entrance Exams28 articles
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CUET-PG CS vs NIMCET: One Shared-Core Plan for MCA Entrance Prep
Prepare for both MCA entrances with one shared core and two thin exam-specific wrappers: an overlap sheet built from the official documents, a coverage-and-accuracy diagnostic, and a twelve-hour week that survives missed days.
CAT Mock Analysis: Diagnose Time, Accuracy and Question Choice
Turn one mock into a practical review sheet. Separate execution, selection and reach problems, then test one measurable rule per section.
CUET PG Computer Science Mock Analysis: Build a Study Plan From Every Error
A mock score cannot tell you what to revise next. Use an error log, timed re-solves, priority weights and fresh-question retests to build a practical seven-day repair plan.
UGC NET47 articles
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UGC NET CS Attempt Strategy Without Negative Marking: A Three-Pass Plan
Use a rehearsed 180-minute clock to answer quick recalls first, protect time for technical work, and leave disciplined elimination and guesses until the final pass.
Painter's Algorithm: Depth Sorting, Back-to-Front Rendering and Failure Cases
Learn when far-to-near polygon sorting produces the correct visible surface, why crossings and cycles defeat a global order, and when geometry must be split.
UGC NET Paper 1 Higher Education Timeline: Institutions, Commissions, Policies and Digital Initiatives
Turn disconnected Higher Education dates into a classified timeline. Learn the ancient centres, modern bodies, policies and digital initiatives through worked ordering drills.
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Every topic hub on the blog — 76 in all.