BITS HD 2026 vs GATE CS 2026

Subject-wise, topic-to-topic deep comparison against official GATE 2026 syllabus from IIT Guwahati. Every sub-topic verified.

NOT in GATE Syllabus — Must Study Extra

Partially in GATE

In GATE — No Extra Needed

TEST 1 — Core Mathematics (15 Qs, 45 min)

Compulsory for All

Calculus

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Limits, Continuity	Yes	GATE: "Limits, continuity"
Differentiability	Yes	GATE: "differentiability"
Maxima and Minima	Yes	GATE: "Maxima and minima"
Mean Value Theorem	Yes	GATE: "Mean value theorem"
Integration (single variable)	Yes	GATE: "Integration"
Applications of Definite Integrals	Partial	Basic integration in GATE, not "applications"
Convergence of Infinite Series	No	Not in GATE CS syllabus
Maclaurin and Taylor Series	No	Not in GATE CS syllabus
Functions of Several Variables	No	Multivariable — not in GATE CS
Partial Derivatives, Chain Rule	No	Not in GATE CS
Directional Derivatives, Gradient Vectors	No	Not in GATE CS
Tangent Planes, Normal Lines	No	Not in GATE CS
Extreme Values and Saddle Points (multi-var)	No	Not in GATE CS
Double Integrals	No	Not in GATE CS
Triple Integrals	No	Not in GATE CS
Line and Surface Integrals	No	Not in GATE CS
Conservative Fields, Curl, Divergence	No	Vector calculus — not in GATE CS
Theorems of Green, Gauss, Stokes	No	Not in GATE CS

GATE 2026 CS (Section 1): "Calculus: Limits, continuity and differentiability, Maxima and minima, Mean value theorem, Integration."

5 topics common, 12 topics EXTRA. The entire multivariable calculus, series, and vector calculus portion is not in GATE.

Linear Algebra

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Matrix Algebra	Yes	GATE: "Matrices"
Row Reduction Method	Yes	Implied by "system of linear equations"
Rank and Inverse of a Matrix	Partial	Rank tested in PYQs but not explicit in 2026 text
System of Linear Equations	Yes	GATE: "system of linear equations"
Eigenvalues and Eigenvectors	Yes	GATE: "eigenvalues and eigenvectors"
Vector Space	No	NOT in GATE 2026 CS syllabus text
Basis and Dimension	No	NOT in GATE 2026 CS syllabus text
Linear Transformation	No	NOT in GATE 2026 CS syllabus text
Range and Kernel of a Linear Transformation	No	NOT in GATE 2026 CS syllabus text

GATE 2026 CS (Section 1): "Linear Algebra: Matrices, determinants, system of linear equations, eigenvalues and eigenvectors, LU decomposition."

4 topics common, 4 topics EXTRA. Vector spaces, basis/dimension, linear transformations, range/kernel are NOT mentioned in the official GATE 2026 CS syllabus. Note: These appear in some GATE PYQs but are officially outside the 2026 syllabus scope.

Complex Variables

Not in GATE

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Analytic Functions	No	Entirely absent
Cauchy's Theorems	No	Entirely absent
Cauchy's Integral Formula	No	Entirely absent
Taylor Series (complex)	No	Entirely absent
Laurent Series	No	Entirely absent
Calculus of Residues	No	Entirely absent

GATE 2026 CS: Complex Variables does NOT appear anywhere in the CS paper. It is only in GATE ECE/EE/ME papers.

6/6 topics are EXTRA. Study from scratch: Cauchy-Riemann equations, contour integration, residue theorem.

Probability and Statistics

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Sample Space, Events	Yes	Basic probability
Conditional Probability	Yes	GATE: "Conditional probability"
Bayes Theorem	Yes	GATE: "Bayes theorem"
Random Variables	Yes	GATE: "Random variables"
Binomial Distribution	Yes	GATE: "binomial"
Poisson Distribution	Yes	GATE: "Poisson"
Exponential Distribution	Yes	GATE: "exponential"
Normal Distribution	Yes	GATE: "normal"
Uniform Distribution	Yes	GATE: "Uniform"
Mean, Variance	Yes	GATE: "Mean, median, mode, SD"
Geometric Distribution	No	Not listed in GATE 2026
Gamma Distribution	No	Not listed in GATE 2026
Sum of Independent Random Variables	No	Not in GATE 2026
Law of Large Numbers	No	Not in GATE 2026
Central Limit Theorem	No	Not in GATE 2026
Marginal & Conditional Distributions	No	Not in GATE 2026
Sampling Distribution	No	Not in GATE 2026
Point Estimation	No	Not in GATE 2026
Statistical Intervals	No	Not in GATE 2026
Tests of Hypotheses (t-test)	No	Not in GATE 2026
Correlation and Linear Regression	No	Not in GATE 2026

GATE 2026 CS (Section 1): "Probability and Statistics: Random variables, Uniform, normal, exponential, Poisson and binomial distributions. Mean, median, mode and standard deviation. Conditional probability and Bayes theorem."

10 topics common, 11 topics EXTRA. Major additions: Gamma/Geometric distributions, CLT, hypothesis testing, estimation, regression.

Differential Equations

Not in GATE

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
First Order ODE (linear/nonlinear)	No	Entirely absent
Higher Order Linear ODE (const. coeff.)	No	Entirely absent
Variation of Parameters	No	Entirely absent
Cauchy-Euler Equation	No	Entirely absent
Fourier Series	No	Entirely absent
Laplace Transform	No	Entirely absent
Initial & Boundary Value Problems	No	Entirely absent
Partial Differential Equations	No	Entirely absent
Separation of Variables	No	Entirely absent

GATE 2026 CS: Differential Equations is NOT listed. Only in GATE ECE/EE/ME/CE papers.

9/9 topics EXTRA. Heaviest new math topic — study ODEs, Laplace transforms, Fourier series from scratch.

Numerical Methods

Not in GATE

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Newton's Method (Newton-Raphson)	No	Entirely absent
Secant Method	No	Entirely absent
Fixed Point Iteration	No	Entirely absent
Method of False Position	No	Entirely absent
Direct Methods (Gaussian Elimination)	No	Not as "numerical method" in GATE
Iterative Methods (Jacobi, Gauss-Seidel)	No	Entirely absent
LU Decomposition	Yes	GATE has it under Linear Algebra
Trapezoidal Rule	No	Entirely absent
Simpson's Rule	No	Entirely absent

GATE 2026 CS: Numerical Methods NOT listed. LU Decomposition appears only under Linear Algebra section.

8/9 topics EXTRA (only LU decomposition is in GATE under Linear Algebra).

TEST 1 — English & Logical Reasoning (15 Qs)

Compulsory

English Language

Partial

Sub-topic (BITS HD)	In GATE GA 2026?	Notes
Tenses	Yes	GATE GA: "tenses"
Articles	Yes	GATE GA: "articles"
Adjectives	Yes	GATE GA: "adjectives"
Prepositions	Yes	GATE GA: "prepositions"
Conjunctions	Yes	GATE GA: "conjunctions"
Verb-Noun Agreement	Yes	GATE GA: "verb-noun agreement"
Vocabulary (idioms, phrases)	Yes	GATE GA: "words, idioms, phrases in context"
Reading Comprehension	Yes	GATE GA: "Reading and comprehension"
Parallel Construction	No	Not in GATE GA
Relative Pronouns	No	Not explicitly in GATE GA
Determiners, Modals	No	Not explicitly in GATE GA
Voice, Transformation	No	Not in GATE GA
Question Tags	No	Not in GATE GA
Phrasal Verbs	No	Not in GATE GA
Synonyms, Antonyms, Homophones	Partial	GATE has "vocabulary" broadly
Paragraph Unity, Linkers/Connectives	No	Not in GATE GA
Rearrangement (Composition)	Partial	GATE: "Narrative sequencing" is similar

GATE 2026 GA: "Verbal: Basic English grammar: tenses, articles, adjectives, prepositions, conjunctions, verb-noun agreement. Basic vocabulary: words, idioms, phrases in context. Reading and comprehension, Narrative sequencing."

8 common, 7 extra. BITS HD tests deeper grammar (voice, modals, phrasal verbs, paragraph unity).

Logical Reasoning

Partial

Sub-topic (BITS HD)	In GATE GA 2026?	Notes
Analogy	Yes	GATE GA: "Analogy"
Classification (Odd one out)	Yes	Covered under logical reasoning
Series Completion	Yes	GATE GA: "Numerical relations"
Logical Deduction (passage-based)	Yes	GATE GA: "deduction and induction"
Pattern Perception	Yes	GATE GA: "patterns in 2 and 3 dimensions"
Paper Folding/Cutting	Yes	GATE GA: "paper folding, cutting"
Figure Formation & Analysis	Yes	GATE GA: "assembling, grouping"
Chart Logic (table-based reasoning)	No	Not in GATE GA (data interpretation is in Quantitative)
Figure Matrix	No	Not explicitly in GATE GA
Rule Detection	No	Not explicitly in GATE GA

GATE 2026 GA: "Analytical: Logic: deduction and induction, Analogy, Numerical relations and reasoning. Spatial: Transformation of shapes: translation, rotation, scaling, mirroring, assembling, grouping, paper folding, cutting, patterns in 2 and 3 dimensions."

7 common, 3 extra. Chart Logic, Figure Matrix, Rule Detection need separate practice.

TEST 2 — Computer Science (70 Qs, 105 min)

M.E. Computer Science

Discrete Mathematics

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Principles of Counting	Yes	GATE: "counting"
Recurrence Relations	Yes	GATE: "recurrence relations"
Sets, Functions, Relations	Yes	GATE: "Sets, relations, functions"
Propositional Logic	Yes	GATE: "Propositional and first order logic"
Predicate Logic	Yes	GATE: "first order logic"
Strings and Languages	Yes	Covered under TOC section

GATE 2026 CS (Section 1): "Discrete Mathematics: Propositional and first order logic. Sets, relations, functions, partial orders and lattices. Monoids, Groups. Graphs: connectivity, matching, colouring. Combinatorics: counting, recurrence relations, generating functions."

All common. GATE actually covers MORE (Graph Theory, Groups, Lattices, Generating Functions). No extra study needed.

Theory of Computation

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Regular Languages, Regular Expressions	Yes	GATE: "Regular expressions"
Finite Automata (DFA/NFA)	Yes	GATE: "finite automata"
Context Free Grammar	Yes	GATE: "Context-free grammars"
Context Free Languages	Yes	GATE: "context-free languages"
Push Down Automata (DPDA/NPDA)	Yes	GATE: "push-down automata"
Pumping Lemma	Yes	GATE: "pumping lemma"
Turing Machines, Universal TM	Yes	GATE: "Turing machines"
Recursive/RE Languages	Yes	Covered under undecidability
Decidability/Undecidability	Yes	GATE: "undecidability"

9/9 topics match. No extra study needed.

Data Structures & Algorithms

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
ADTs, Algorithm Analysis, Order Notation	Yes	GATE: "Asymptotic worst case complexity"
Sorting and Searching	Yes	GATE: "Searching, sorting"
Lists, Stacks, Queues	Yes	GATE: "stacks, queues, linked lists"
Hash Tables	Yes	GATE: "hashing"
Search Trees (Height Balancing / AVL)	Yes	GATE: "binary search trees"
Trees (Traversal, Applications)	Yes	GATE: "trees"
Graphs (Connectivity, Traversal, Paths)	Yes	GATE: "graphs" + "Graph traversals"

7/7 common. GATE even adds binary heaps. No extra study needed.

Design & Analysis of Algorithms

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Divide-and-Conquer	Yes	GATE: "divide-and-conquer"
Greedy	Yes	GATE: "greedy"
Dynamic Programming	Yes	GATE: "dynamic programming"
Graph Traversals, MST, Shortest Paths	Yes	GATE: "Graph traversals, MST, shortest paths"
Searching, Sorting, Hashing	Yes	GATE: "Searching, sorting, hashing"
Randomization	No	Not in GATE 2026 official syllabus
Lower Bound Analysis	No	Not explicitly in GATE 2026
NP-completeness / NP-hardness	No	NOT in GATE 2026 official text (asked in PYQs)
Complexity Classes and Reductions	No	NOT in GATE 2026 official text
Backtracking	No	NOT in GATE 2026 official text
Branch-and-Bound	No	NOT in GATE 2026 official text
Approximation Algorithms	No	NOT in GATE 2026 official text

GATE 2026 CS (Section 5): "Algorithms: Searching, sorting, hashing. Asymptotic worst case time and space complexity. Algorithm design techniques: greedy, dynamic programming and divide-and-conquer. Graph traversals, minimum spanning trees, shortest paths."

5 common, 7 NOT in official GATE 2026 text. NP-completeness, Backtracking, B&B are tested in GATE PYQs but are NOT in the official 2026 syllabus anymore. Still important to study for both exams.

Digital Electronics and Microprocessors

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Boolean Algebra	Yes	GATE: "Boolean algebra"
Combinational Circuits (Adders, MUX, DEMUX)	Yes	GATE: "Combinational circuits"
Sequential Circuits (Counters, Registers)	Yes	GATE: "sequential circuits"
Minimization	Yes	GATE: "Minimization"
Number Representations, Arithmetic	Yes	GATE: "Number representations, computer arithmetic"
Encoders, Decoders	Yes	Part of combinational circuits
Programmable Logic Devices	No	Not in GATE CS
Logic Families	No	Not in GATE CS
8085 Architecture & Assembly	No	Entirely absent
8086 Architecture & Assembly	No	Entirely absent
Memory Interfacing	No	Not in GATE CS digital logic
8253 Timer/Counter	No	Entirely absent
8255 PPI	No	Entirely absent
8259 PIC	No	Entirely absent
8251 USART	No	Entirely absent

GATE 2026 CS (Section 2): "Digital Logic: Boolean algebra. Combinational and sequential circuits. Minimization. Number representations and computer arithmetic (fixed and floating point)."

6 common, 9 EXTRA. The entire microprocessor block (8085/8086 + all 4 peripheral chips) is not in GATE CS.

Operating Systems

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Processes, Threads	Yes	GATE: "processes, threads"
Process Scheduling	Yes	GATE: "CPU scheduling"
Concurrency, Mutual Exclusion	Yes	GATE: "concurrency and synchronization"
Deadlock	Yes	GATE: "Deadlock"
Paging, Segmentation, Virtual Memory	Yes	GATE: "Memory management and virtual memory"
Page Replacement, Thrashing	Yes	Standard GATE OS topic
File Systems	Yes	GATE: "File systems"
I/O System, Secondary Storage	Yes	GATE: "I/O scheduling"

8/8 match perfectly. No extra study needed.

Computer Organization & Architecture

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
ISA (RISC/CISC)	Yes	GATE: "Machine instructions and addressing modes"
ALU, Computer Arithmetic	Yes	GATE: "ALU, data-path"
Control Unit	Yes	GATE: "control unit"
Cache Memory	Yes	GATE: "cache"
Main & Secondary Memory	Yes	GATE: "main memory and secondary storage"
I/O (Interrupt, DMA)	Yes	GATE: "I/O interface (interrupt and DMA)"
Pipelining, ILP	Yes	GATE: "Instruction pipelining, pipeline hazards"
RAID System	No	Not explicitly in GATE 2026
Bus & Interconnections	Partial	Not explicit but implied

GATE 2026 CS (Section 3): "Machine instructions and addressing modes. ALU, data-path and control unit. Instruction pipelining, pipeline hazards. Memory hierarchy: cache, main memory and secondary storage; I/O interface (interrupt and DMA mode)."

7/9 match. RAID and Bus are minor additions — minimal extra effort.

Computer Networks

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
IEEE 802.3, Ethernet, Error Control	Yes	GATE: "framing, error detection, MAC, Ethernet"
IPv4, IPv6, Subnetting (FLSM/VLSM)	Yes	GATE: "IP addressing, IPv4, CIDR"
ICMP, ARP, DHCP	Yes	GATE: "ARP, DHCP, ICMP"
Distance Vector Routing (RIP)	Yes	GATE: "distance vector"
Link-State Routing (OSPF)	Yes	GATE: "link state routing"
TCP, UDP, Flow/Congestion Control	Yes	GATE: "TCP, UDP, flow/congestion control"
HTTP, FTP, DNS, SMTP	Yes	GATE: "DNS, SMTP, HTTP, FTP"
NAT	Yes	GATE: "NAT"
Bridges	Yes	GATE: "Ethernet bridging"
WiFi (IEEE 802.11)	No	Not in GATE 2026 CS text
IGMP	No	Not in GATE 2026
IPv6, ICMPv6	No	GATE only mentions IPv4
Path-Vector Routing (BGP)	No	Not in GATE 2026
Multicast Routing (PIM, DVMRP, MOSPF)	No	Not in GATE 2026
Mobile IP	No	Not in GATE 2026
POP, IMAP	Partial	GATE mentions "Email" broadly
Network Security, Cryptography	No	Not in GATE CS 2026
Digital Signatures, IDS, Firewalls	No	Not in GATE CS 2026

GATE 2026 CS (Section 10): "Concept of layering: OSI and TCP/IP; packet/circuit/virtual-circuit switching; Data link layer: framing, error detection, MAC, Ethernet bridging; Routing: shortest path, flooding, distance vector and link state; IP addressing, IPv4, CIDR, ARP, DHCP, ICMP, NAT; Transport: flow/congestion control, UDP, TCP, sockets; Application: DNS, SMTP, HTTP, FTP, Email."

9 common, 8 extra. Key extras: WiFi, IPv6, BGP, Multicast routing, Mobile IP, Network Security (crypto, signatures, firewalls).

Database Systems

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
ER Model	Yes	GATE: "ER-model"
Relational Model	Yes	GATE: "Relational model"
Relational Algebra, Relational Calculus	Yes	GATE: "relational algebra, tuple calculus"
SQL	Yes	GATE: "SQL"
Normalization (up to 4NF)	Yes	GATE: "normal forms"
Indexing (B/B+ Tree, Hash)	Yes	GATE: "indexing (B and B+ trees)"
Transactions, Concurrency Control	Yes	GATE: "Transactions and concurrency control"
Object-oriented Data Model	No	Not in GATE CS
Object-relational Data Model	No	Not in GATE CS
Multi-Dimensional Indexing	No	Not in GATE CS
Query Optimization (cost-based/heuristic)	No	Not explicitly in GATE 2026 text
Crash Recovery (Log/Shadow Paging)	No	Not explicitly in GATE 2026 text

GATE 2026 CS (Section 9): "ER-model. Relational model: relational algebra, tuple calculus, SQL. Integrity constraints, normal forms. File organization, indexing (B and B+ trees). Transactions and concurrency control."

7 common, 5 extra. Key additions: OO/OR models, multi-dim indexing, query optimization, crash recovery.

Compiler Construction

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Lexical Analysis	Yes	GATE: "Lexical analysis"
Parsing (Top-down/Bottom-up)	Yes	GATE: "parsing"
Syntax Directed Translation	Yes	GATE: "syntax-directed translation"
Symbol Tables, Semantic Analysis	Yes	Part of compiler phases
Type Checking	Yes	Part of semantic analysis
Intermediate Code Generation	Yes	GATE: "Intermediate code generation"
Code Generation (Basic Blocks, Flow Graphs)	Yes	GATE: "Local optimization, Data flow analyses"
Register Allocation	Yes	Part of code generation

GATE 2026 CS (Section 7): "Lexical analysis, parsing, syntax-directed translation. Runtime environments. Intermediate code generation. Local optimization, Data flow analyses: constant propagation, liveness analysis, common sub-expression elimination."

8/8 match. GATE even covers data flow analysis which BITS HD doesn't explicitly mention. No extra needed.

SPECIAL TEST — Software Systems (50 Qs, 60 min)

M.E. Software Systems Only

Structured Programming in C

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Conditionals, Loops, Jumps	Yes	GATE: "Programming in C"
Tuples, Unions, Lists	Yes	Structures/unions in GATE PYQs
Functions, Variables, Recursion	Yes	GATE: "Recursion"
Memory Allocation, Pointers	Yes	Standard GATE C topic
Dynamic Memory Allocation	Yes	malloc/calloc in GATE PYQs
Linked Lists	Yes	GATE: "linked lists"

6/6 common. Fully covered by GATE prep.

Advanced Programming in C

Mostly Extra

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Stacks, Queues (ADT in C)	Yes	GATE: "stacks, queues"
Binary Trees	Yes	GATE: "trees"
User Defined Types	Partial	struct in GATE but less focus
Macros and Preprocessing	No	Not tested in GATE CS
Separate Compilation and Linking	No	Not in GATE CS
Libraries (static/dynamic)	No	Not in GATE CS
File and I/O Operations	No	fopen/fread/fwrite not in GATE
String Processing	No	Not a GATE focus area

5/8 topics are EXTRA. Study: C preprocessor directives, multi-file projects, makefiles, FILE* operations, string.h.

Object Orientation and Software Engineering

Not in GATE

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Objects and Classes	No	GATE CS has NO OOP
Delegation	No	Entirely absent
Inheritance and Dynamic Binding	No	Entirely absent
Types and Polymorphism	No	Entirely absent
Templates/Generics	No	Entirely absent
Software Lifecycle (SDLC)	No	Entirely absent
Development Methodologies	No	Entirely absent
Requirements Analysis & Modeling	No	Entirely absent
Object Oriented Design	No	Entirely absent
Design Patterns	No	Entirely absent
Architectural Design	No	Entirely absent
Software Testing and Quality	No	Entirely absent

GATE 2026 CS: NO section on OOP or Software Engineering exists. GATE tests only C programming.

12/12 topics are EXTRA. Biggest gap for GATE students. Study: Java OOP, Design Patterns, SDLC, UML, Testing.

Database Systems (SS Test)

Common

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
ER Modeling	Yes	GATE: "ER-model"
Normalization	Yes	GATE: "normal forms"
SQL	Yes	GATE: "SQL"

3/3 common. Subset of GATE DBMS. Over-prepared from GATE.

Core Systems

Partial

Sub-topic (BITS HD)	In GATE CS 2026?	Notes
Number Representations, Logic Gates	Yes	GATE Digital Logic
Combinational/Sequential Circuits	Yes	GATE Digital Logic
Computer Org (ISA, Arithmetic, Memory)	Yes	GATE COA
OS (Processes, Threads, Memory, Files)	Yes	GATE OS
LAN, Ethernet, TCP/UDP/IP	Yes	GATE Networks
World Wide Web: Client-Server Systems	No	Not in GATE CS
HTTP (as web protocol)	Partial	GATE has HTTP in application layer
HTML	No	Not in GATE CS
XML	No	Not in GATE CS
Web-based Systems	No	Not in GATE CS

5 common, 4 extra. Systems portion from GATE is fine. Add: Client-Server concepts, HTML/XML basics, Web architecture.

Complete List: Topics NOT in GATE CS 2026 Official Syllabus

Complex Variables (6 sub-topics) — Cauchy, residues, Laurent series — entirely new
Differential Equations (9 sub-topics) — ODEs, PDEs, Laplace, Fourier — entirely new
Numerical Methods (8 sub-topics) — Root-finding, Simpson's, Trapezoidal — entirely new
Multivariable Calculus (12 sub-topics) — Taylor series, partial derivatives, vector calculus, Green/Gauss/Stokes
Linear Algebra extras (4 sub-topics) — Vector spaces, basis/dimension, linear transformations, range/kernel
Statistics extras (11 sub-topics) — Gamma/Geometric dist., CLT, hypothesis testing, regression, estimation
Algorithms extras (7 sub-topics) — NP-completeness, Backtracking, B&B, Approximation (tested in PYQs but not in official 2026 text)
8085/8086 Microprocessors (9 sub-topics) — Architecture, assembly, all 4 peripheral chips
Network extras (8 sub-topics) — WiFi, IPv6, BGP, Multicast, Mobile IP, Security/Crypto/Firewalls
DBMS extras (5 sub-topics) — OO model, OR model, multi-dim indexing, query optimization, recovery
OOP & Software Engineering (12 sub-topics) — Entirely new [SS test only]
Advanced C (5 sub-topics) — Macros, linking, libraries, file I/O [SS test only]
Web Technologies (4 sub-topics) — HTML, XML, Client-Server, Web systems [SS test only]

Official Sources Verified

GATE 2026 CS Syllabus — IIT Guwahati (Official PDF) GATE 2026 General Aptitude Syllabus — IIT Guwahati (Official PDF) BITS Pilani HD Brochure 2026-27 (Official PDF) GATEOverflow GATE CSE PYQs 2026 (v1 + v2)