Complete GATE CS 2027 / 2026 Syllabus Breakdown
Comprehensive subject-wise weightage and core topic breakdown for GATE CS 2027 / 2026. Each subject is linked directly to official NPTEL video lectures and course materials from top IIT professors.
GATE 2027 Official Examination & Information Portals
Direct access to organizing institute portal (IIT Madras — IITM), official GATE 2027 syllabus, GOAPS application portal, and MoE / NPTEL preparation resources.
GATE 2027 Official Portal (IIT Madras)
Official IIT Madras portal for GATE 2027 announcements, candidate registration (GOAPS), eligibility criteria, and scorecards.
Official GATE 2027 CS & IT Syllabus
Authoritative Computer Science & Information Technology syllabus structure and marking scheme from the organizing committee.
NPTEL GATE Preparation Portal
Free video lecture series, subject-wise syllabus mappings, and mock test series coordinated by IIT Madras and NPTEL.
Engineering Mathematics & Discrete Math
~13%Mathematical logic, recurrence relations, combinatorics, graph theory (trees, planarity), linear algebra (eigenvalues), and probability distributions.
Core GATE Topics
Propositional Logic, Sets, Relations, Functions, Graph Theory, Matrix Algebra, Calculus, Probability & Statistics.
Digital Logic
~5%K-maps, multiplexers, decoders, flip-flops, counters, registers, state machines, and IEEE floating point representation.
Core GATE Topics
Boolean Algebra, Combinational & Sequential Circuits, Minimization, Number Representations & Computer Arithmetic.
Computer Organization & Architecture
~8%Pipeline speedup, hazards (data, control, structural), cache mapping (direct, set-associative), cache misses, and I/O interrupts.
Core GATE Topics
Machine Instructions, Addressing Modes, ALU, Data Path & Control Unit, Pipelining, Memory Hierarchy & Cache.
Data Structures & Algorithms
~16%Asymptotic complexity (Big-O), tree traversals, AVL trees, Dijkstra's algorithm, Kruskal/Prim MST, Floyd-Warshall, and NP-completeness.
Core GATE Topics
Arrays, Stacks, Queues, Linked Lists, Trees, BSTs, Binary Heaps, Graphs, Divide-and-Conquer, Dynamic Programming, Greedy.
Theory of Computation
~9%DFA/NFA equivalence, regular expressions, pumping lemma, CFG parsing ambiguity, Turing Machines, Halting Problem, and Rice's Theorem.
Core GATE Topics
Regular Languages & Finite Automata, Context-Free Languages & Pushdown Automata, Turing Machines, Undecidability.
Compiler Design
~5%Lexer tokens, LL(1) FIRST and FOLLOW sets, LR(0)/SLR(1)/LALR(1) parsing, 3-address code, activation records, and DAG optimization.
Core GATE Topics
Lexical Analysis, Parsing, Syntax-Directed Translation, Runtime Environments, Intermediate Code Generation & Code Optimization.
Operating Systems
~10%Preemptive scheduling, Peterson's solution, semaphores, Banker's deadlock avoidance, page replacement algorithms (LRU, FIFO, Optimal), and disk scheduling.
Core GATE Topics
Processes, Threads, IPC, Synchronization, Deadlocks, CPU Scheduling, Memory Management, File Systems.
Databases
~8%Relational algebra queries, 3NF/BCNF normalization, B+ tree indexing order/height, serializability, 2-phase locking (2PL), and ACID properties.
Core GATE Topics
ER-Model, Relational Model, Relational Algebra, Tuple Calculus, SQL, Integrity Constraints, Normal Forms, Transactions & Concurrency.
Computer Networks
~10%Sliding window protocols (Go-Back-N, Selective Repeat), IPv4 subnetting & CIDR, Distance Vector vs Link State, TCP handshake/flow control, and Socket API.
Core GATE Topics
OSI & TCP/IP Stack, Data Link Layer (Ethernet, Flow Control), Network Layer (IPv4/IPv6, Routing), Transport Layer (TCP/UDP, Sockets).
General Aptitude
15%Grammar, vocabulary, numerical estimation, data interpretation, logical reasoning, and spatial paper folding / pattern matching.
Core GATE Topics
Verbal Ability, Quantitative Aptitude, Analytical Aptitude, Spatial Aptitude.
PYQ & Mock Tests
Practice with previous year GATE papers and free mock tests to maximize your score.
NPTEL GATE Portal — Mock Tests
Official NPTEL GATE mock tests in exam-like environment.
PracticePaper — GATE CS
Free topic-wise PYQs, mock tests, and handwritten notes.
GateOverflow — PYQ Solutions & Discussion
Community-driven GATE CS PYQ solutions, detailed explanations, and subject-wise question banks.