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ISRO Scientist Engineer Computer Science Free Mock Test
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ISRO Scientist Engineer (Computer Science) Syllabus 2026, Exam Pattern
ISRO Scientist Engineer (Computer Science) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about ISRO has published notification 2026 for the recruitment of Scientist Engineer CS (Computer Science) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
ISRO Scientist Engineer Syllabus 2026 Overview
ISRO Scientist Engineer Computer Science Syllabus 2026
Part A: Computer Science :
Programming and Data Structures :
Programming in C
Recursion
Arrays, stacks, queues, linked lists, trees, binary search trees, binary heaps, graphs.
Algorithms :
Searching, sorting, and 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
Theory of Computation :
Regular expressions and finite automata.
Context-free grammars and push-down automata.
Regular and context-free languages, the pumping lemma.
Turing machines and undecidability.
Compiler Design :
Intermediate code generation, Local optimization,
Data flow analyses: constant propagation, liveness analysis, common subexpression elimination, Lexical analysis, parsing, syntax-directed translation, Runtime environments
Operating System :
concurrency and synchronization.
Deadlock.
CPU and I/O scheduling.
Memory management and virtual memory.
File systems, System calls, processes, threads, inter-process communication,
Databases :
ER-model.
Relational model: relational algebra, tuple calculus, SQL. Integrity constraints, normal forms.
File organization, indexing (e.g., B and B+ trees).
Transactions and concurrency control.
Computer Networks :
Concept of layering: OSI and TCP/IP Protocol Stacks; Basics of packet, circuit and virtual circuit- switching;
Data link layer: framing, error detection, Medium Access Control, Ethernet bridging;
Routing protocols: shortest path, flooding, distance vector and link state routing; Fragmentation and IP addressing, IPv4, CIDR notation, Basics of IP support protocols (ARP, DHCP, ICMP), Network Address Translation (NAT),
Transport layer: flow control and congestion control, UDP, TCP, sockets; Application layer protocols: DNS, SMTP, HTTP, FTP, Email
Digital Logic :
Boolean algebra.
Combinational and sequential circuits.
Minimization.
Number representations and computer arithmetic (fixed and floating point).
Computer Organization and Architecture :
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).
Part B: Aptitude/Ability :
1. Reasoning
2. Logical Reasoning
3. Diagrammatic Reasoning
4. Abstract Reasoning and Deductive Reasoning
ISRO Scientist Engineer Computer Science Exam Pattern 2026
Duration : 120 Minutes
Exam Date : Notified Soon
Starting Date of Application Form : 27th August 2026
Last Date of Application Form : 16th September 2026
Total Post : 21
ISRO Scientist Engineer Syllabus 2026 Overview
| Name of the Organization | Indian Space Research Organization (ISRO) |
| Post Name | Scientist Engineer ‘SC’ (Computer Science Scientist/Engineer) |
| Total Post | 21 |
| Selection Process | Written Test / Interview |
| Category | Syllabus and Exam Pattern |
| Official Website | www.isro.gov.in |
ISRO Scientist Engineer Computer Science Syllabus 2026
Part A: Computer Science :
Programming and Data Structures :
Programming in C
Recursion
Arrays, stacks, queues, linked lists, trees, binary search trees, binary heaps, graphs.
Algorithms :
Searching, sorting, and 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
Theory of Computation :
Regular expressions and finite automata.
Context-free grammars and push-down automata.
Regular and context-free languages, the pumping lemma.
Turing machines and undecidability.
Compiler Design :
Intermediate code generation, Local optimization,
Data flow analyses: constant propagation, liveness analysis, common subexpression elimination, Lexical analysis, parsing, syntax-directed translation, Runtime environments
Operating System :
concurrency and synchronization.
Deadlock.
CPU and I/O scheduling.
Memory management and virtual memory.
File systems, System calls, processes, threads, inter-process communication,
Databases :
ER-model.
Relational model: relational algebra, tuple calculus, SQL. Integrity constraints, normal forms.
File organization, indexing (e.g., B and B+ trees).
Transactions and concurrency control.
Computer Networks :
Concept of layering: OSI and TCP/IP Protocol Stacks; Basics of packet, circuit and virtual circuit- switching;
Data link layer: framing, error detection, Medium Access Control, Ethernet bridging;
Routing protocols: shortest path, flooding, distance vector and link state routing; Fragmentation and IP addressing, IPv4, CIDR notation, Basics of IP support protocols (ARP, DHCP, ICMP), Network Address Translation (NAT),
Transport layer: flow control and congestion control, UDP, TCP, sockets; Application layer protocols: DNS, SMTP, HTTP, FTP, Email
Digital Logic :
Boolean algebra.
Combinational and sequential circuits.
Minimization.
Number representations and computer arithmetic (fixed and floating point).
Computer Organization and Architecture :
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).
Part B: Aptitude/Ability :
1. Reasoning
2. Logical Reasoning
3. Diagrammatic Reasoning
4. Abstract Reasoning and Deductive Reasoning
ISRO Scientist Engineer Computer Science Exam Pattern 2026
Duration : 120 Minutes
| Part | Subject | No.of Question | Marks | Negative Marking | Duration |
| Part A | Computer Science | 80 | 80 | 0.33 | 90 Minutes |
| Part B | Aptitude/Ability | 15 | 20 | No Negative Marking | 30 Minutes |
| Total | 95 | 100 | 120 Minutes |
Exam Date : Notified Soon
Starting Date of Application Form : 27th August 2026
Last Date of Application Form : 16th September 2026
Total Post : 21
ISRO Scientist Engineer CS Exam Free Online Test Series
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