PGT Computer Science (Level-3), (HTET Exam 2023)

Total Questions: 150

141. It refers to mathematical procedure that needs to transforma number of possibly correlated variables into small number of uncorrelated variables:

Correct Answer: B. Principle component analysis
Solution:

Principle Component Analysis (PCA) is a statistical technique used for dimensionality reduction while preserving as much variance as possible. It transforms a set of possibly correlated variables into a smaller number of uncorrelated variables called principal components. This method is widely used in exploratory data analysis and for making predictive models.

142. Which of the following is not a search engine?

Correct Answer: C. Internet explorer
Solution:

Internet Explorer is a web browser, not a search engine. It is designed to access, retrieve, and display content from the web, which includes web pages, images, video, and other files. In contrast, a search engine is a software system designed to carry out web searches, which means to search the World Wide Web in a systematic way for particular information specified in a textual web search query.

143. Step by step description of how to arrive at a solution to a given problem is known as:

Correct Answer: A. Algorithm
Solution:

An algorithm is a step-by-step description or set of rules to be followed in calculations or other problem-solving operations, especially by a computer. It is a fundamental concept in computer science used to devise solutions that a computer can execute.

144. This module converts the python source file into .pyc file:

Correct Answer: D. py_compile
Solution:

The py_compile module in Python is used to compile Python source files into bytecode, which is a lower-level, platform-independent representation of the source code. This bytecode can then be executed by the Python virtual machine. This compilation is an essential step for running Python scripts efficiently.

145. A program which is responsible to translate assembly language code into equivalent machine code, is called as:

Correct Answer: D. Assembler
Solution:

An assembler is a program that translates assembly language, a low-level programming language, into machine code. This process is essential for converting human-readable mnemonics into the numeric codes that the hardware can execute directly.

146. Full form of DRAM is:

Correct Answer: A. Dynamic Random Access Memory
Solution:

DRAM stands for Dynamic Random Access Memory, a type of memory used in computing devices to store data temporarily. It is called "dynamic" because it needs to be refreshed periodically to maintain the data it stores, unlike static RAM (SRAM) which retains data as long as power is supplied.

147. To insert images we use _______ tag.

Correct Answer: C. img
Solution:

In HTML, the tag is used to embed images into a web page. This tag defines a source file for the image, along with other attributes like dimensions and alternative text for browsers that do not support the tag.

148. An integrated set of programs that controls the resources of computer system and provides its users an interface that is easy to use:

Correct Answer: A. Operating system
Solution:

The operating system (OS) is an integrated set of programs that controls the resources of a computer system and provides its users with an interface that is easy to use. It manages the computer's hardware, software, and data resources, and provides services for computer programs.

149. A small dark square in the right hand corner of the cell is called as:

Correct Answer: D. Fill Handle
Solution:

The fill handle in spreadsheet software like Microsoft Excel is a small dark square in the bottom right hand corner of the cell or group of cells. It is used for copying cell contents or for extending a data series or patterns to adjacent cells.

150. The software containing an interpreter that converts the byte code into machine code where the python program runs is called as:

Correct Answer: B. Python Virtual Machine
Solution:

The Python Virtual Machine (PVM) is the runtime engine of Python, and it's part of the Python interpreter. The PVM reads and executes the byte code generated by the Python compiler, converting it into machine code. This allows Python to be a platform-independent language.