Application and software III

Which type of software enables the user to perform financial tasks like invoicing, payroll processing, and financial reporting?

• web browser

• instant messaging software

• presentation software

• accounting software

Answer explanation

Accounting software is explicitly designed to handle financial tasks such as invoicing, processing payroll, and generating financial reports, making it the best choice. While financial data can be presented using presentation software, it isn't equipped for tasks such as invoicing or processing payroll. Instant messaging software is used for real-time communication, not for financial tasks such as invoicing and payroll processing. A web browser is used mainly for accessing the internet, not for accounting or financial reporting tasks.

Which of the following server operating systems is known for its open-source availability?

• macOS server

• IBM I

• Windows Server 2019

• Ubuntu server

Answer explanation

Ubuntu Server is renowned as an open-source server operating system. It provides flexibility and adaptability, allowing users to modify and distribute their own versions as needed. While macOS Server is a server OS, it is not open-source. It is owned and controlled by Apple Inc. Windows Server 2019 is a product of Microsoft and is not open-source. It operates under a commercial license. IBM i is a server operating system developed by IBM, and it is not open-source. IBM maintains complete control over its development and distribution.

Lucy, a user, prefers typing commands to complete tasks on her computer rather than using graphical buttons. Which type of interface is she using?

• Browser Interface

• console/ command line

• GUI

• File Manager

Answer explanation

The console or command-line interface requires the typing of textual commands to operate the computer, which fits the user's preference. The graphical user interface (GUI) involves interaction with graphical icons and visual indicators, which is contrary to the user's preference for typing commands. The File Manager is a type of utility that helps users manage files and folders, not a command-based interface. While a browser is a type of interface, it does not refer to the textual command-based interface.

What does an operating system do as part of application management?

• creates logo for each application

• direct writes code for application

• upgrades the application functionalities

• manages resources for applications

Answer explanation

A significant role of an operating system in application management is governing system resources, like memory and processing power, to allow applications to run smoothly. An operating system doesn't directly write application code. This task primarily belongs to software developers and programmers. Upgrading or improving the functionalities of an application isn’t a task conducted by an operating system. It's typically done by application developers upon user feedback or advancements in technology. Designing logos for applications is not an operating system's duty. That falls under the work of graphic and UX designers.

Rosa wanted to use a geo-restricted service from abroad. What should she do in her web browser to access the service?

• Activate private browsing

• valid certificates

• configure proxy setting

• enable browser add-ons/extensions.

Answer explanation

A proxy can disguise the actual location by providing a new IP address. This could help her access the geo-restricted service from abroad. Certificates confirm security between web browsers and websites, but they don't help access geo-restricted content. Private browsing protects local privacy (like browsing history), but it doesn't change the geographical location of the IP address. Unless the add-on or extension is specifically designed to bypass geo-restrictions, they do not affect access to geo-restricted services.

Jonas loves exploring new technology but he has been facing continuous connectivity issues with a certain web application only from his device. Other apps and websites seem to work fine. What could Jonas do to resolve the issue?

• install a new extension

• check whether his browser is compatible with the application.

• clear the browser cache

• enable a pop-up blocker

Answer explanation

In case a specific web application isn't functioning as expected, it may be due to browser compatibility issues. Jonas should check if his browser is compatible with it. While pop-up blockers improve browsing experience by eliminating unwanted pop-ups, they don't generally fix connectivity issues with web applications. Extensions enhance a browser's feature set but may not resolve connectivity issues with specific web applications unless the extension is designed to fix such issues. Clearing the browser cache helps in loading the updated web content but doesn’t usually solve problems related to web application compatibility.

What is the critical function of an embedded operating system?

• managing user interface

• control hardware in real time.

• providing network connectivity

• data encrypting

Answer explanation

The key function of an embedded OS is to control hardware in real time. It is primarily meant to run the device it is installed on. Network connectivity is typically a feature of many operating systems. However, it is not the primary function of an embedded operating system. While some embedded operating systems may have encryption capabilities, it is not their critical function. Embedded operating systems generally do not manage user interfaces, this typically falls under broader OS responsibilities.

Which application delivery model allows for the software and files to function even when there is no network access?

• cloud hosted

• local network hosted

• locally installed

• web-based

Answer explanation

Explanation

Locally installed delivery permits applications to be installed and run on individual devices without the requirement of network access. Files are also saved on local devices. The cloud hosting model necessitates internet access to retrieve files and run the application. While files are hosted on a local network, they do require the network to be accessible in order to run and for files to be available. The web-based model consists of applications that run on a web server, rather than on the user’s device. It requires internet access to load and run the application in a web browser, hence it cannot function without network access.

Linda, a system analyst at Dion Training, wants to implement an application that works solely on the user's computer. Which type of application architecture model should she select?

• three tier

• n-tier

• two-tier

• one tier

Answer explanation

In a one-tier application architecture, all elements of the application - UI, data, and control logic, are located on one platform - the user's computer, which matches the requirements. A two-tier architecture could also work on a single computer, but it separates UI and data storage layers, which may not be necessary for the application. The three tier model separates the UI, data, and business logic into three different layers, offering more complexity than what is required for an application that functions solely on a single computer. The n-tier model separates an application into multiple layers, which would not be the ideal architecture model for an application that needs to operate solely on a user's computer.

An operating system does NOT typically:

• interface with peripherals devices

• handle security and access control

• allocate resources to applications.

• design and create applications.

Answer explanation

An operating system doesn't design and create applications; that responsibility lies with software developers. A key responsibility of an OS is to allocate resources to applications, facilitating functionality and efficiency. Security and access controls are vital parts of any OS, ensuring the system and its data are shielded from unauthorized users. An OS often interfaces with peripheral devices, managing their communication with the system.