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

Total Questions: 150

121. The traffic which can adjust over wide ranges, to changes in delay and throughout across an internet and still meets the needs of an application, is called as:

Correct Answer: B. Elastic traffic
Solution:

Elastic traffic refers to network traffic that is able to accommodate fluctuations in bandwidth and delay, making adjustments as needed to maintain consistent performance across networks. This adaptability is essential for applications that can tolerate some variations in network speed and latency.

122. _________ is one of the gateway of internet.

Correct Answer: C. Internet service provider
Solution:

An Internet Service Provider (ISP) is an organization that provides services for accessing, using, or participating in the Internet. ISPs may be organized in various forms, such as commercial, community-owned, non-profit, or privately owned.

123. The study of how to make computers do things which, at the moment, people do better:

Correct Answer: B. Artificial Intelligence
Solution:

Artificial Intelligence (AI) is the study of how to create computers and computer software that are capable of intelligent behaviour. It involves developing algorithms and systems that can perform tasks that would normally require human intelligence, such as visual perception, speech recognition, decision-making, and language translation.

124. It is a variant of generate and test in which feedback from test procedure is used to help the generator decide which direction to move in search space?

Correct Answer: A. Hill climbing
Solution:

Hill climbing is a mathematical optimization technique which belongs to the family of local search. It is relatively simple and finds the optimal solution by iteratively making small changes to an initial solution. If the change leads to a better solution, an additional incremental change is made; if not, a different incremental change is attempted.

125. A collection of concepts that can be used to describe the structure of database and provides the necessary means to achieve this abstraction:

Correct Answer: A. Data Model
Solution:

A data model is an abstract model that organizes data elements and standardizes how they relate to one another and to properties of the real-world entities. This model provides the necessary means to achieve data abstraction, simplification of complex real-world data relationships, and enforcement of data integrity and security.

126. A field that gives each record a unique identity is called as:

Correct Answer: C. Primary key
Solution:

A primary key is a special relational database table column (or combination of columns) designated to uniquely identify all table records. A primary key's main features are: it must contain a unique value for each row of data, and it cannot contain null values.

127. Project size is related with:

Correct Answer: A. Technical feasibility
Solution:

Technical feasibility assesses the practicality of a proposed project or system. It involves evaluating whether the technology needed for the project is available, whether the project can be completed with the current technology and resources, and whether the project can be implemented within the existing technical infrastructure and constraints.

128. The ________ phase of the system decides how the system will operate in terms of hardware, software and network infrastructure.

Correct Answer: B. Design
Solution:

The design phase of a system development life cycle focuses on specifying hardware and software aspects to ensure that the system will meet the specified requirements. This phase involves determining how the system will operate in terms of hardware, software, and network infrastructure to support system functionality as planned.

129. Instruction format of machine level language consists of OPCODE and _________ .

Correct Answer: B. Operand
Solution:

In machine-level language, the instruction format typically consists of an opcode (operation code) and operand(s). The opcode specifies the operation to perform, and the operand(s) provide the data or the address of the data on which the operation is to be performed. This format is crucial for the execution of low-level tasks directly by the hardware.

130. Amount of work that a system is able to do per unit time is called as:

Correct Answer: C. Throughput
Solution:

Throughput refers to the amount of work that a system is capable of processing in a given amount of time. It is a crucial measurement for evaluating the performance of a system, particularly in settings that process large volumes of data or transactions, such as computer networks or servers.