The Professional Knowledge Questions Asked in IBPS SO Prelims Exam 2026 are now being reported by candidates after the examination conducted on 29 August 2026. The 2026 cycle introduced a major change by bringing Professional Knowledge into the Preliminary Examination itself, with 25 questions carrying 50 marks and a separate 20-minute sectional timing. Based on the questions recalled by candidates and the available shift-wise analysis, the Professional Knowledge section tested core concepts rather than relying only on direct factual questions.
Professional Knowledge Questions Asked In IBPS SO Prelims Exam 2026
The questions reported so far cover areas such as Computer Networks, Operating Systems, DBMS, Programming Languages, Data Structures, Cloud Computing, Artificial Intelligence, Cryptography and banking technology for the IT Officer stream. Since Professional Knowledge is post-specific, the exact questions differ for IT Officer, Agriculture Field Officer, Law Officer, HR/Personnel Officer, Marketing Officer and Rajbhasha Adhikari.
IBPS SO IT Officer Professional Knowledge
The following questions and concepts have been reported from the Professional Knowledge section, particularly for the IT Officer paper, in the early analysis.
| No. | Question/Concept Asked | Answer/Key Concept | |
| 1 | Computer Networks | Protocol used to map an IP address to a MAC address | ARP |
| 2 | Networking | Default port number related to DNS | Port 53 |
| 3 | Computer Fundamentals | Addressable memory in a 32-bit system | 4 GB |
| 4 | Cryptography | Encryption algorithm using the same key for encryption and decryption | Symmetric-key encryption |
| 5 | Cryptography | Algorithm/concept related to symmetric encryption | AES |
| 6 | Operating System | FIFO-based page replacement | FIFO Page Replacement |
| 7 | Operating System | Page replacement concept involving recently used pages | LRU |
| 8 | Operating System | NRU page replacement algorithm | Not Recently Used |
| 9 | Python | Function that produces values lazily | Generator |
| 10 | C++ | Default access specifier for class members | Private |
| 11 | Java | Use of the final keyword |
Prevents modification/ overriding/ inheritance depending on usage
|
| 12 | Database | SQL operation used to combine results of queries | UNION |
| 13 | Database | SQL keyword/operator related to combining result sets | UNION |
| 14 | Data Structures | Traversal that gives sorted order in a Binary Search Tree | Inorder Traversal |
| 15 | Data Structures | Tree structure commonly used in database indexing | B+ Tree |
| 16 | Cloud Computing | Cloud service model where software is provided over the internet | SaaS |
| 17 | Artificial Intelligence | Concept where a model performs too well on training data but poorly on unseen data | Overfitting |
| 18 | Software Engineering | Agile framework/methodology | Scrum was reported |
| 19 | Quantum Computing | Basic quantum-computing concept involving quantum bits | Qubit |
| 20 | Banking Technology | Purpose/use of KYC | Know Your Customer |
| 21 | Networking | IP-to-MAC address resolution | ARP |
| 22 | Operating System | FIFO page-fault calculation | Numerical question |
| 23 | Database | SQL set operation | UNION |
| 24 | Programming | C++ class access control | Private |
| 25 | Linux | Language/command-line environment-related concept | Linux/ Unix-based concept |
Note: The reported questions above were cross-checked against exam analysis and candidate-recalled discussions, with the questions clearly presented as memory-based rather than from an official IBPS paper.










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