High Level Language II - SS3 ICT Past Questions and Answers - page 2
What advantage do High-Level Languages have in terms of error handling compared to Low-Level Languages?
They have less error-prone syntax.
They provide better hardware support.
They offer more direct control over memory.
They often have better error handling mechanisms.
Why are High-Level Languages considered more productive for software development than Low-Level Languages?
High-Level Languages are considered more productive for software development than Low-Level Languages due to several reasons:
a) Abstraction: HLLs provide a higher level of abstraction, allowing developers to work with concepts closer to the problem domain rather than focusing on low-level hardware details. This abstraction simplifies code development and maintenance.
b) Readability: HLLs have more human-readable syntax, making it easier for developers to understand, write, and maintain code. In contrast, LLLs often involve cryptic and complex instructions.
c) Portability: HLLs are designed to be portable across different platforms and architectures. Code written in HLLs can often run on various systems with minimal modifications, reducing the effort required to adapt code to different environments.
d) Productivity: HLLs typically come with built-in libraries and functions that simplify common tasks, speeding up the development process. Developers can write code faster and with fewer errors.
e) Error Handling: HLLs often provide robust error handling mechanisms, making it easier to detect and resolve issues during development. This leads to more reliable software.
Give an example of a situation where using Machine Language would be more suitable than a High-Level Language.
Machine Language is suitable in situations where developers require precise control over hardware and need to perform low-level operations that are not easily achievable in High-Level Languages. For instance, developing a device driver for a hardware component like a graphics card or writing firmware for an embedded system often requires using Machine Language or Assembly Language. These scenarios demand direct manipulation of hardware registers and resources, which is more efficiently done in low-level languages.
Explain the concept of abstraction in the context of programming languages.
Abstraction in programming languages refers to the practice of hiding complex implementation details and exposing a simplified interface for users. This simplification allows developers to work at a higher level of understanding, focusing on the problem's essential aspects rather than getting bogged down in low-level intricacies.
For example, in High-Level Languages, functions and libraries provide abstractions. A developer can use a function like print("Hello, World!") without needing to understand how the computer's display system works internally. This level of abstraction makes programming more accessible, efficient, and less error-prone.
In what type of applications would you prefer using a scripting language over a compiled language? Provide an example.
Scripting languages are preferred in applications where rapid development and ease of use are critical, such as automation, web development, and certain system administration tasks. An example is web development using languages like JavaScript and Python. These languages allow developers to quickly create interactive web applications without the need for extensive compilation steps. The interpreted nature of scripting languages speeds up development cycles, making them suitable for web development where frequent changes are common.
Describe a scenario in which portability is a critical factor in choosing a programming language.
Portability is crucial when developing software that needs to run on multiple platforms or devices without extensive modification. For example, consider the development of a cross-platform mobile application. To reach the widest audience, developers often choose High-Level Languages like JavaScript (for React Native) or Dart (for Flutter). These languages compile to native code for various platforms (iOS and Android) while allowing developers to write most of the codebase once. Portability ensures that the same codebase can be used on different mobile devices with minimal platform-specific adjustments, reducing development time and effort.