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

Total Questions: 150

101. A set of style rules that describes a document's display characteristics is:

Correct Answer: B. Style Sheet
Solution:

A style sheet, in the context of web development, is a set of rules that defines how to display HTML elements. These rules are often stored in external .css files which can be linked to multiple web pages, allowing for consistent styling across a website without having to write CSS rules in every HTML file.

102. Find the decimal equivalent of octal number is 127.54₈ :

Correct Answer: C. 87.6875₁₀

103. ________ is the program in execution.

Correct Answer: A. Process
Solution:

In computing, a process is an instance of a computer program that is being executed. It contains the program code and its current activity. Depending on the operating system (OS), a process may comprise multiple threads of execution that carry out tasks cooperatively.

104. HTML tags must be written within ________ .

Correct Answer: D.
Solution:

In HTML, tags are the building blocks of HTML pages. Tags are used to delineate the beginning and end of elements in the markup. Tags are enclosed in angle brackets, for example, <tagname> for the start tag and </tagname > for the end tag.

105. All the calculations and decision making operations are performed in which unit?

Correct Answer: C. Arithmetic Logical Unit
Solution:

In computer architecture, all calculations and decision-making operations are performed by the Arithmetic Logical Unit (ALU). The ALU is a subsystem that performs mathematical, logical, and decision operations in a computer and is a fundamental building block of the central processing unit (CPU).

106. _________ is used to detect the errors in the header to avoid misdelivery.

Correct Answer: A. Checksum
Solution:

The checksum is a value used to verify the integrity of a packet or block of data. It is particularly useful in detecting errors in the data caused during transmission or storage. The checksum helps ensure that the data received is the same as the data sent, thereby avoiding misdelivery or corruption.

107. Initially internet was used for _________ .

Correct Answer: B. Military intelligence
Solution:

The internet was initially developed for military intelligence. The Advanced Research Projects Agency Network (ARPANET), funded by the U.S. Department of Defense, was the first operational packet-switching network and the progenitor of what was to become the global internet. It was primarily used for secure and reliable communication in military operations.

108. The query that is used to summarize the data from various tables is called as:

Correct Answer: D. Crosstab query
Solution:

In database systems, a crosstab query is a type of query that aggregates and possibly summarizes data from multiple rows and turns it into a format where the data is presented along the headers of both rows and columns. This allows for easier analysis and reporting of complex data sets.

109. In database _________ type of field is used to insert various objects mode in other Windows applications into table.

Correct Answer: C. OLE object
Solution:

In database terminology, an OLE (Object Linking and Embedding) object field is used to store files created in other applications. For example, a Word document or an Excel spreadsheet can be embedded in a database table using an OLE object field. This allows for a high level of integration between different applications.

110. Full form of MVC is:

Correct Answer: D. Model View Controller
Solution:

The acronym MVC stands for Model-ViewController. It is a design pattern used for developing user interfaces that divides an application into three interconnected parts. This is done to separate internal representations of information from the ways information is presented to and accepted from the user.