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Questions and Answers
What is the primary function of web server software?
What is the primary function of web server software?
What does the abbreviation RSS stand for in the context of web content delivery?
What does the abbreviation RSS stand for in the context of web content delivery?
Which web server software is commonly used with Linux and Unix operating systems?
Which web server software is commonly used with Linux and Unix operating systems?
What is the main difference between virtual reality (VR) and augmented reality (AR)?
What is the main difference between virtual reality (VR) and augmented reality (AR)?
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Which store was introduced by Apple for app distribution?
Which store was introduced by Apple for app distribution?
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What is the primary function of the Amazon Echo?
What is the primary function of the Amazon Echo?
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Which company was the first to release a digital assistant?
Which company was the first to release a digital assistant?
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What is the Internet primarily defined as?
What is the Internet primarily defined as?
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Which of the following is NOT a feature of web pages on the Internet?
Which of the following is NOT a feature of web pages on the Internet?
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Which protocol is essential for how the Internet functions?
Which protocol is essential for how the Internet functions?
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What term describes the sending of data packets through a network?
What term describes the sending of data packets through a network?
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When referring to client/server computing, what does 'client' typically refer to?
When referring to client/server computing, what does 'client' typically refer to?
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What is a common application of chatbots?
What is a common application of chatbots?
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What is a defining characteristic of a public cloud?
What is a defining characteristic of a public cloud?
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Which cloud model allows a single renter to utilize infrastructure similar to a public cloud?
Which cloud model allows a single renter to utilize infrastructure similar to a public cloud?
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How does cloud computing affect e-commerce firms?
How does cloud computing affect e-commerce firms?
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Which of the following accurately describes the hybrid cloud model?
Which of the following accurately describes the hybrid cloud model?
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What protocol is primarily used for transferring web pages?
What protocol is primarily used for transferring web pages?
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Which protocol is specifically used to send e-mail to a server?
Which protocol is specifically used to send e-mail to a server?
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What is a key feature of Post Office Protocol 3 (POP3)?
What is a key feature of Post Office Protocol 3 (POP3)?
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What significant implication does cloud computing have for corporations?
What significant implication does cloud computing have for corporations?
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What is a primary function of the IMAP protocol?
What is a primary function of the IMAP protocol?
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Which protocol is specifically used for remote login to another computer?
Which protocol is specifically used for remote login to another computer?
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What is the function of SSL/TLS protocols?
What is the function of SSL/TLS protocols?
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What characterizes Tier 1 Internet Service Providers?
What characterizes Tier 1 Internet Service Providers?
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Which of the following best describes the role of bandwidth?
Which of the following best describes the role of bandwidth?
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What utility program is used to check the connection between a client computer and a TCP/IP network?
What utility program is used to check the connection between a client computer and a TCP/IP network?
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In which layer of the TCP/IP model does FTP operate?
In which layer of the TCP/IP model does FTP operate?
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How does the existing Internet backbone differ from the original design?
How does the existing Internet backbone differ from the original design?
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What does the URL in a web browser specify?
What does the URL in a web browser specify?
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Which component is NOT essential for the functioning of the Web?
Which component is NOT essential for the functioning of the Web?
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What lesson does the decline of Netscape illustrate regarding business in e-commerce?
What lesson does the decline of Netscape illustrate regarding business in e-commerce?
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Which of the following describes Hypertext?
Which of the following describes Hypertext?
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Which version of HTML introduced enhancements like video playback and drag-and-drop?
Which version of HTML introduced enhancements like video playback and drag-and-drop?
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How can HTML web pages be created?
How can HTML web pages be created?
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What was one reason for Netscape's decline in market share over the years?
What was one reason for Netscape's decline in market share over the years?
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What does HTML provide web page designers?
What does HTML provide web page designers?
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What is the primary means of accessing the Internet today in the United States?
What is the primary means of accessing the Internet today in the United States?
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In client/server computing, what role do servers typically play?
In client/server computing, what role do servers typically play?
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Which of the following is NOT a type of service offered in the cloud computing model?
Which of the following is NOT a type of service offered in the cloud computing model?
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What does 'Software as a Service' (SaaS) provide to customers?
What does 'Software as a Service' (SaaS) provide to customers?
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What significant change has occurred regarding the form factor of personal computers?
What significant change has occurred regarding the form factor of personal computers?
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What is a characteristic of cloud computing services?
What is a characteristic of cloud computing services?
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How has the mobile platform affected e-commerce?
How has the mobile platform affected e-commerce?
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What distinguishes a client in client/server computing?
What distinguishes a client in client/server computing?
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Study Notes
Internet Technologies Overview
- The Internet is a vast interconnected network of networks and millions of computers.
- It's not owned by any single entity and functions by connecting different computer networks.
- The Internet provides infrastructure and supports transformation in commerce, research, and culture.
- The term "Internet" derives from "internetwork."
Key Internet Concepts
- Packet Switching: Digital messages are broken into packets, sent along various paths, and reassembled at the destination.
- TCP/IP: A core communication protocol for the Internet. TCP establishes connections between sending and receiving computers, while IP provides the addressing scheme.
- Client/Server Computing: Client computers request services, and servers provide them. Examples include file storage and web connections.
The Web
- The World Wide Web is one of the Internet's most popular services.
- It provides access to billions of web pages, which contain text, graphics, audio, video, other objects and links.
- Hyperlinks (embedded links) allow for easy jumping between different parts of the web and other websites.
- Programming languages like HTML are used to create web pages.
Internet Protocols
- HTTP (HyperText Transfer Protocol): The protocol for transferring web pages. An HTTP session starts when a client requests a resource and ends when the server sends the resource.
- FTP (File Transfer Protocol): Allows for the transfer of files to and from a server to a client.
- SMTP (Simple Mail Transfer Protocol): Used for sending email messages.
Internet Addresses
- Every device/computer on the Internet needs a unique address for identification.
- IPv4 uses 32-bit numbers expressed as four numbers separated by periods.
- IPv6 uses 128-bit numbers.
- Domain Names (DNS): Translates numeric IP addresses into human-readable names.
- Uniform Resource Locator (URL): The address used to locate web content by web browsers. A typical URL includes the protocol, domain name, path to the resource. For example: http://www.example.com/page.html
Internet Architecture
- The Internet backbone is a giant pipeline that connects different networks.
- Bandwidth measures how much data can be transferred over a medium in a fixed period (eg, Mbps, Gbps).
- Internet Service Providers (ISPs) own and manage parts of the internet backbone.
The Internet Backbone
- Long-haul fiber-optic networks are owned by Tier 1 ISPs and interconnect various networks.
- Tier 1 ISPs often have peering agreements, allowing internet traffic flow without charge.
Internet2
- A consortium to develop and deploy revolutionary internet technologies.
- Internet2 facilities advancements across the internet backbone and connectivity (e.g., fiber optics, wireless internet).
Public, Private, and Hybrid Cloud Models
- Public Cloud: Third-party companies manage the infrastructure, and customers pay for resources used (on-demand).
- Private Cloud: A single consumer/company controls the infrastructure and manages resources.
- Hybrid Cloud: A mix of public and private clouds where critical functions are kept private and less critical aspects are outsourced to a public cloud.
Limitations of Current Internet
- Bandwidth Limitations: There is insufficient capacity in the backbone for certain needs.
- Quality of Service Limitations: Packets can take a longer time to reach their destinations.
- Network Architectural Limitations: Difficulties or constraints within the network architecture.
Latency Solutions
- Packet Switching: Data is broken into packets and sent via various routes to the destination.
- Differentiated QoS (DiffServ): Prioritizes different types of data in the packet switching process.
- Guaranteed Service Levels: Users can purchase guaranteed bandwidth within the network, allowing for high speed and low latency.
Security in the Internet of Things (IoT)
- IoT security concerns: Security experts warn IoT devices may be a vulnerable point for security attacks.
- Malware spread: Malware can be transmitted across a connected network of IoT devices.
- Patching challenges: Difficulty in applying patches to IoT devices means they remain vulnerable.
The Future Internet
- Faster Internet Access: Increased bandwidth and expanded wireless connectivity will lead to faster, more comprehensive access.
- Enhanced Communication & Experiences: Future changes to the Internet will lead to better communication infrastructure and overall user experiences.
- Online Shopping Evolution: The evolution of the Internet will lead to a vast increase in online shopping.
Mobile Apps
- App stores allow independent developers and companies to distribute apps for smartphones.
- Google play store and the Apple store (App Store) facilitate app distribution.
Other Internet Technologies
- Campus/Corporate Area Networks (CANs): Networks within organizations.
- Intranets: Private networks for communication and information processing within an organization.
Who Governs the Internet?
- There's no single entity that controls or governs the Internet. Instead, governments, international organizations, and professional societies influence and monitor Internet activity.
- Governing bodies include ICANN (Internet Corporation for Assigned Names and Numbers), IETF (Internet Engineering Task Force), and others.
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Description
Test your knowledge on the fundamental concepts of Internet technologies. This quiz covers essential topics like packet switching, TCP/IP protocol, and client/server computing. Explore how the Internet connects billions of computers and supports various services.