Computer Networks and Communication Technologies

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Questions and Answers

What are some common uses of data in Business Intelligence?

Managing hardware components

Performing software updates

Designing user interfaces

Building large collections such as data warehouses, data marts, and data lakes (correct)

Which data mining technique involves sorting through data to form statistical rules about relationships among items?

Case-based reasoning

Association analysis (correct)

Regression analysis

Neural computing

Which IEEE 802.11 standards may occasionally suffer from interference at 2.4 GHz?

IEEE 802.11a and IEEE 802.11b

IEEE 802.11b and IEEE 802.11g (correct)

IEEE 802.11a and IEEE 802.11n

IEEE 802.11n and IEEE 802.11ac

What is a common characteristic of data scientists?

They are highly inquisitive and view situations from many angles Signup and view all the answers

What is the primary use of a conversion funnel in data visualization?

The steps a consumer takes in deciding to purchase a product and become a customer Signup and view all the answers

How does Knowledge Management (KM) foster innovation within an organization?

By encouraging the free flow of ideas among employees, contractors, suppliers, and business partners Signup and view all the answers

What is the primary purpose of data visualization tools in BI?

To present data in visual formats like charts and graphs to facilitate understanding and analysis Signup and view all the answers

What is one of the primary uses of spreadsheets in a business context?

To perform operations on data based on formulas created by the end user Signup and view all the answers

Which component of an expert system helps users understand how the system arrived at certain conclusions or results?

Explanation Facility Signup and view all the answers

What is the role of the Internet Protocol (IP)?

To provide rules for passing packets from one host to another Signup and view all the answers

Which of the following technologies is used to create, store, and share knowledge among people with common interests?

Communities of Practice (COP) Signup and view all the answers

Which of the following best describes the role of a data scientist?

An individual who combines business acumen, deep analytics understanding, and knowledge of data limitations to deliver real improvements Signup and view all the answers

Which process is commonly used by organizations to capture tacit knowledge?

Shadowing and joint problem solving Signup and view all the answers

Which component of a BRMS is responsible for determining which rules need to be executed and in what order?

Business rule engine Signup and view all the answers

Which paper format is often used in reporting and querying tools?

Formatted data, graphs, and charts Signup and view all the answers

Which IEEE 802.11 standard provides data transmission speeds of up to 1.3+ Gbps?

IEEE 802.11ac and later.11ax Signup and view all the answers

What was ARPANET?

The ancestor of the Internet Signup and view all the answers

What is the key characteristic of a data cube that allows it to be useful for OLAP?

It allows the summarization of numeric facts across various dimensions Signup and view all the answers

What role does a Local Area Network (LAN) typically play in an office environment?

Allowing network users within an office building to connect to each other's devices for rapid communication Signup and view all the answers

Which network topology uses a common backbone as a shared communications medium?

Bus network Signup and view all the answers

What is the primary purpose of Business Intelligence (BI)?

To extract, transform, integrate, visualize, analyze, interpret, and present data for improved decision making Signup and view all the answers

How does data visualization impact the presentation of numerical data?

It brings immediate impact to dull and boring numbers by representing them visually Signup and view all the answers

Which of the following is NOT a component of BI applications, practices, and technologies?

Data encryption Signup and view all the answers

What role does the backbone play in a bus network?

It acts as a shared communications medium for all devices Signup and view all the answers

In which network topology could the failure of a central node disable the entire network?

Star network Signup and view all the answers

Which network topology is likely to cover the largest area?

Bus network Signup and view all the answers

What is a significant disadvantage of the radio frequency range?

Signal is highly susceptible to interception Signup and view all the answers

What advantage does microwave transmission offer over wired communication?

Capable of high-speed transmission without laying cables Signup and view all the answers

What is a common disadvantage of infrared frequency communication?

Effective only for short distances Signup and view all the answers

Which wireless communication method is commonly used in cellular communication?

Microwave transmission Signup and view all the answers

What is one of the key benefits of B2B e-commerce for organizations?

Connecting business partners in a virtual supply chain to cut resupply times and reduce costs Signup and view all the answers

What is one of the primary goals of e-government?

To simplify the sharing of information Signup and view all the answers

Study Notes

Network Topologies

Failure of the central node in a star network can disable the entire network.
Bus network covers the largest area due to its single backbone communication medium.
The bus network uses a common backbone as a shared communication medium.
LAN allows rapid communication among users in an office building.

Wireless Communication

Radio frequency range is vulnerable to interception, posing a significant disadvantage.
Microwave transmission enables high-speed data transfer without the need for physical cables.
Infrared communication is limited to short distances, which is a common drawback.
Cellular communication commonly relies on microwave transmission for data exchange.
5G technology enables high-speed data transmission on frequencies above 24 GHz.

E-Commerce and Government

B2B e-commerce reduces resupply times and costs by connecting virtual supply chains.
E-government aims to simplify information sharing among citizens and government entities.

Economic Concepts

People engage in bartering during economic downturns to acquire goods and services without cash expenditure.

Online Marketing

Retargeting in online advertising aims to recapture shoppers who abandoned their carts through targeted ads.

Data Management and Analysis

Reporting and querying tools present data in formatted views, such as graphs and charts.
A data cube is crucial for OLAP as it summarizes numeric data across various dimensions.
The conversion funnel visualizes the customer journey from interest to purchase.
Knowledge Management (KM) encourages an open flow of ideas among various stakeholders to drive innovation.
Business Intelligence (BI) focuses on data extraction, transformation, and presentation for better decision-making.

Data Visualization

Data visualization enhances comprehension of numeric data by representing it visually, making it impactful.
A word cloud illustrates word frequency, providing a visual representation of text data.

Software and Networking

Mobile Device Management (MDM) software distributes security updates to mobile devices.
Local Area Networks (LAN) perform tasks like printing documents and connecting devices within an office.
The backbone in a bus network acts as a shared communication medium for all devices.
A front-end processor manages communications for systems serving multiple users.

Data Science and Analytics

Data scientists combine analytics, business acumen, and a deep understanding of data to derive insights.
Mastery of statistics, mathematics, and programming is essential for a successful data scientist.
Business analytics forecasts future results by analyzing past data trends.

General Knowledge

ARPANET is recognized as the predecessor of the Internet.
The Internet Protocol (IP) sets the rules for transmitting packets between hosts.

Miscellaneous Concepts

A Learning System is a combination of software and hardware that adapts based on feedback received.
Communities of Practice (COP) foster knowledge sharing among individuals with shared interests.
Business Rule Management Systems (BRMS) utilize a business rule engine to execute and prioritize rules effectively.

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Description

This quiz explores various network topologies, wireless communication methods, and the intersection of e-commerce with government services. It covers concepts such as star and bus networks, microwave transmission, and 5G technology. Test your knowledge of these critical areas in modern communication and commerce.