What do data warehouses support?
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Correct answer: (B) OLAP
Explanation
Data warehouses store historical, integrated data for analysis, so they support OLAP (Online Analytical Processing). OLTP runs on operational databases.
DSSSB TGT / PGT · Computer Science
AI, ML & Data Science Previous Year Questions
11 AI, ML & Data Science (Computer Science) questions asked in DSSSB TGT / PGT previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 11 questions
- Official answer key
- Free
Other Computer Science topics
DBMS & SQL 229Digital Logic & Number Systems 194Computer Networks 177Operating Systems 161Data Structures 151Programming in C/C++ 89Web Technologies 68Algorithms 66Computer Organization & Architecture 66Discrete Mathematics 66OOP 63Java 46E-Commerce & IT Management 41Computer Fundamentals & MS Office 34Python 29Computer Graphics & Multimedia 28Software Engineering 23Cyber Security 13
What is the fullform of FOPL in artificial intelligence?
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Correct answer: (A) First order predicate logic
Explanation
FOPL is First Order Predicate Logic, which uses predicates, variables and quantifiers (∀, ∃) to represent knowledge.
If Σx = Σy = 12, Σx² = Σy² = 45, Σxy = 41 and n = 5, then what is the value of byx (regression coefficient)?
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Correct answer: (B) 61/81
Explanation
byx = (nΣxy − ΣxΣy) / (nΣy² − (Σy)²) = (5×41 − 12×12) / (5×45 − 144) = (205 − 144) / (225 − 144) = 61/81. Since Σx² = Σy², both denominators give the same value.
Which of the following refers to focusing on determining, organising, directing, facilitating and monitoring knowledge-related practices and activities required to achieve the desired business strategies and objectives with reference to knowledge management in organisations?
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Correct answer: (D) Management point of view
Explanation
The management point of view of knowledge management focuses on determining, organising, directing, facilitating and monitoring knowledge practices to meet business goals.
The lowest cost solution to developing a KM system is:
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Correct answer: (A) in-house development
Explanation
In-house development uses the organisation's own staff, infrastructure and knowledge, so it avoids vendor licences and outsourcing fees. That is why it is described as the lowest-cost route to a KM system.
Which of the following is NOT the purpose of knowledge management system?
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Correct answer: (D) Portability
Explanation
A knowledge management system aims at capturing and sharing knowledge, integration and supporting strategy. Portability is not one of its purposes.
What is the advantage of exploratory Data Analysis in Big Data and Analytics?
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Correct answer: (B) Flexible ways to generate hypotheses
Explanation
Exploratory Data Analysis explores data without fixed assumptions, so it offers flexible ways to generate hypotheses. Not giving definitive answers and less realistic accuracy statements are its drawbacks, not advantages.
Interpolation is carried out using data from:
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Correct answer: (C) curve fitting and linear analysis
Explanation
Interpolation estimates values between known data points by fitting a curve or line to the data, which is why the key links it with curve fitting and linear analysis.
A classification of integrated circuits with complexities of 30 to 300 equivalent gates on a single chip is known as:
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Correct answer: (C) MSI
Explanation
Medium-scale integration (MSI) puts a moderate number of gates (roughly tens to a few hundred) on one chip, between SSI and LSI.
Interpolation is carried out using data from:
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Correct answer: (D) curve fitting and linear analysis
Explanation
Interpolation estimates values between known data points by fitting a curve (curve fitting) or a straight line (linear analysis) through the given data.
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Correct answer: (B) knowledge management
Explanation
Note: the answer key gives (B), but an organisation's or industry's most successful solutions or problem-solving methods are called best practices (D). Knowledge management is the overall process of capturing and sharing such knowledge.
How to use these DSSSB TGT / PGT Computer Science questions
Every question here was asked in a real DSSSB TGT / PGT paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full DSSSB TGT / PGT papers as timed tests to check your speed under exam conditions.