As per your request here I am sharing the ISRO entrance exam computer science Syllabus:

(1) Computer H/W Digital Logic: Logic functions, Minimization, Design and
synthesis of Combinational and Sequential circuits -- Number representation
and Computer Arithmetic (fixed and floating point)

(2) Computer Organization: Machine instructions and addressing modes, ALU and
Data-path, hardwired and micro-programmed control, Memory interface, I/O
interface (Interrupt and DMA mode), Serial communication interface, Instruction
pipelining, Cache, main and secondary storage.

(3) SOFTWARE SYSTEMS Data structures: Notion of abstract data types, Stack,
Queue, List, Set, String, Tree, Binary search tree, Heap, Graph –

(4) Programming Methodology: C programming, Program control (iteration,
recursion, Functions), Scope, Binding, Parameter passing, Elementary concepts
of Object oriented, Functional and Logic Programming –

(5) Algorithms for problem solving: Tree and graph traversals, Connected
components, Spanning trees, Shortest paths -- Hashing, Sorting, Searching --
Design techniques (Greedy, Dynamic Programming, Divide-and-conquer) –

(6) Compiler Design: Lexical analysis, Parsing, Syntax directed translation,
Runtime environment, Code generation, Linking (static and dynamic) –

(7) Operating Systems: Classical concepts (concurrency, synchronization,
deadlock), Processes, threads and Inter-process communication, CPU
scheduling, Memory management, File systems, I/O systems, Protection and
security.

(8) Databases: Relational model (ER-model, relational algebra, tuple calculus),
Database design (integrity constraints, normal forms), Query languages (SQL),
File structures (sequential files, indexing, B+ trees), Transactions and
concurrency control –

(9) Computer Networks: ISO/OSI stack, sliding window protocol, LAN
Technologies (Ethernet, Token ring), TCP/UDP, IP, Basic concepts of switches,
gateways, and routers..