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CSS Computer Science Paper II Past Paper 2026

CSS Computer Science Paper II 2026 carries 100 marks over 3 hours. It has 7 questions.

Marks
100
Time
3 hours
Questions
7

Years

How to attempt: Attempt ONLY FOUR questions from PART-II by selecting TWO questions from EACH SECTION. ALL questions carry EQUAL marks.

Questions

Question 1 (Part I) is the paper's MCQs, which are not reproduced here.

SECTION-A

  1. Q. 2
    Machine instructions serve as a critical interface between hardware and software. Compare the representation and execution behavior of machine instructions in CISC and RISC based architectures. Evaluate how the instruction-cycle organization shapes the design of the control unit hardwired vs. microprogrammed.
    (20)
  2. Q. 3
    Explain the synergistic relationship between instruction-level parallelism (ILP), superscalar execution, and multi-core architectures in modern CPU design. Analyze how their combined use affects the design of the instruction pipeline, the mitigation of control hazards, and the resultant overall processor throughput.
    (20)
  3. Q. 4
    In large-scale distributed networks, congestion control and avoidance mechanisms are essential for maintaining service quality. Provide a detailed analysis of the congestion-handling strategies employed in TCP, and contrast them with the limitations of UDP in similar conditions. Explain why transport-layer design decisions influence overall network stability.
    (20)
  4. Q. 5
    Modern operating systems balance efficiency and fairness while scheduling processes. Critically evaluate how multi-level feedback queues evolve process priorities over time. Discuss how this design influences CPU utilization and starvation compared to simpler scheduling algorithms.
    (20)

SECTION-B

  1. Q. 6
    Normalization aims to improve schema quality. Discuss how violations of functional and multivalued dependencies lead to structural anomalies. Evaluate whether higher normal forms (3NF, BCNF, 4NF) always benefit large-scale Online Transaction Processing (OLTP) databases systems.
    (20)
  2. Q. 7
    Morphological operations offer powerful tools to manipulate shape-based features. Discuss the mathematical foundation of dilation, erosion, opening, and closing, and evaluate their use in tasks such as document analysis or medical image preprocessing.
    (20)
  3. Q. 8
    Feature extraction is central to computer vision. Describe how edge detection techniques differ in their response to noise, texture, and illumination variations. Compare boundary localization accuracy among classical detectors such as Sobel, Canny, and Laplacian-based methods.
    (20)
  1. Part-II is to be attempted on the separate Answer Book.
  2. Attempt ONLY FOUR questions from PART-II by selecting TWO questions from EACH SECTION. ALL questions carry EQUAL marks.
  3. All the parts (if any) of each Question must be attempted at one place instead of at different places.
  4. Candidate must write Q. No. in the Answer Book in accordance with Q. No. in the Q.Paper.
  5. No Page/Space be left blank between the answers. All the blank pages of Answer Book must be crossed.
  6. Extra attempt of any question or any part of the attempted question will not be considered.