Podcast
Questions and Answers
What is the primary reason for the internet being more fault tolerant than other networks?
What is the primary reason for the internet being more fault tolerant than other networks?
Which of the following correctly describes the difference between IPv4 and IPv6 addresses?
Which of the following correctly describes the difference between IPv4 and IPv6 addresses?
What is the role of the 'https' protocol in web browsing?
What is the role of the 'https' protocol in web browsing?
What is the significance of Network Address Translation (NAT) in home networking?
What is the significance of Network Address Translation (NAT) in home networking?
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Which of the following technologies is NOT used to transmit internet information?
Which of the following technologies is NOT used to transmit internet information?
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Which of the following is a way in which the internet can be used to communicate?
Which of the following is a way in which the internet can be used to communicate?
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Which of the following is NOT a type of cyberbullying?
Which of the following is NOT a type of cyberbullying?
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What is an example of a physical vulnerability of the internet?
What is an example of a physical vulnerability of the internet?
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Which of the following is a pro of using online textbooks?
Which of the following is a pro of using online textbooks?
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What is a method used by governments to censor the internet?
What is a method used by governments to censor the internet?
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What is one way to prevent cyberbullying?
What is one way to prevent cyberbullying?
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What is a benefit of encryption?
What is a benefit of encryption?
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What is a con of online textbooks?
What is a con of online textbooks?
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What is a pro of anonymous online content?
What is a pro of anonymous online content?
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What is a con of government censorship of the internet?
What is a con of government censorship of the internet?
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What is NOT a way in which a search engine determines the ranking of websites?
What is NOT a way in which a search engine determines the ranking of websites?
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What was one social problem that was solved using internet communication?
What was one social problem that was solved using internet communication?
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What is NOT a characteristic of the 'Mean Girls' type of cyberbullying?
What is NOT a characteristic of the 'Mean Girls' type of cyberbullying?
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What is one way to protect your online privacy?
What is one way to protect your online privacy?
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What is one reason why some people are concerned about encryption?
What is one reason why some people are concerned about encryption?
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What was the main reason the internet was designed to be redundant?
What was the main reason the internet was designed to be redundant?
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What is the main reason why open standards are important for the internet?
What is the main reason why open standards are important for the internet?
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What is the main difference between bandwidth and latency?
What is the main difference between bandwidth and latency?
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Which of the following is NOT a way that cybercriminals can harm someone's computer?
Which of the following is NOT a way that cybercriminals can harm someone's computer?
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What does the encryption key length refer to?
What does the encryption key length refer to?
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What is a Certificate Authority responsible for?
What is a Certificate Authority responsible for?
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What is the main reason why private data is kept secret on the internet, even though it is a public network?
What is the main reason why private data is kept secret on the internet, even though it is a public network?
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What is a one-way function?
What is a one-way function?
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Why is the internet considered hierarchical?
Why is the internet considered hierarchical?
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What is the main purpose of a domain name server?
What is the main purpose of a domain name server?
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What is the difference between a domain name and an IP address?
What is the difference between a domain name and an IP address?
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What is the main purpose of a cloud computing system?
What is the main purpose of a cloud computing system?
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What is the difference between symmetric and asymmetric encryption?
What is the difference between symmetric and asymmetric encryption?
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Which of the following is NOT an example of a nationwide system that could be attacked by a Cyber Army?
Which of the following is NOT an example of a nationwide system that could be attacked by a Cyber Army?
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What is the main advantage of using a strong password?
What is the main advantage of using a strong password?
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What is the main purpose of a substitution cipher?
What is the main purpose of a substitution cipher?
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What is a potential drawback of Google tracking search history?
What is a potential drawback of Google tracking search history?
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Which of these scenarios exemplifies the concept of the "digital divide"?
Which of these scenarios exemplifies the concept of the "digital divide"?
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What is the main purpose of a null byte in programming languages?
What is the main purpose of a null byte in programming languages?
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Why is it important for software projects to be designed by diverse teams?
Why is it important for software projects to be designed by diverse teams?
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How does the "bit depth" impact the accuracy of digital representations of analog data?
How does the "bit depth" impact the accuracy of digital representations of analog data?
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Which of the following is NOT a benefit of computing innovation?
Which of the following is NOT a benefit of computing innovation?
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What is the primary reason why the digital divide is more pronounced in countries like Africa?
What is the primary reason why the digital divide is more pronounced in countries like Africa?
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Which of these is NOT a factor that contributes to the digital divide?
Which of these is NOT a factor that contributes to the digital divide?
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Why might Google search results differ when accessed from different countries?
Why might Google search results differ when accessed from different countries?
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What does the term "digital coding of analog values" refer to?
What does the term "digital coding of analog values" refer to?
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Which of the following is considered a computing innovation that has significantly impacted "creative expression"?
Which of the following is considered a computing innovation that has significantly impacted "creative expression"?
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What is the significance of the "sampling rate" in the digital representation of analog values?
What is the significance of the "sampling rate" in the digital representation of analog values?
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What is the main purpose of a multi-author document editing software, like Google Docs?
What is the main purpose of a multi-author document editing software, like Google Docs?
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How does the number of bits used to represent information impact the number of possible values?
How does the number of bits used to represent information impact the number of possible values?
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Why is it important to consider the "social implications" of internet searches?
Why is it important to consider the "social implications" of internet searches?
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Which of the following is NOT a way computers and the internet enable collaboration?
Which of the following is NOT a way computers and the internet enable collaboration?
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What is the main reason why analog data is digitized for processing by computers?
What is the main reason why analog data is digitized for processing by computers?
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What is one primary function of Digital Rights Management (DRM)?
What is one primary function of Digital Rights Management (DRM)?
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What are Creative Commons licenses primarily intended for?
What are Creative Commons licenses primarily intended for?
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What is a significant challenge that arises from the misuse of the DMCA?
What is a significant challenge that arises from the misuse of the DMCA?
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Why is open access research important in the scientific community?
Why is open access research important in the scientific community?
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Which of the following best describes a LAN?
Which of the following best describes a LAN?
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What is a notable concern associated with open source software?
What is a notable concern associated with open source software?
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Which best defines a WAN?
Which best defines a WAN?
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What is the main goal of the open access movement?
What is the main goal of the open access movement?
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What does the term 'network topology' refer to?
What does the term 'network topology' refer to?
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What can be a consequence of using DRM technology for visually impaired users?
What can be a consequence of using DRM technology for visually impaired users?
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What is one of the main factors contributing to the homework gap among low-income households?
What is one of the main factors contributing to the homework gap among low-income households?
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Which of the following initiatives is aimed at increasing digital literacy among senior citizens?
Which of the following initiatives is aimed at increasing digital literacy among senior citizens?
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What is DNS spoofing?
What is DNS spoofing?
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What is one disadvantage of using technology in schools?
What is one disadvantage of using technology in schools?
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How do ISPs contribute to bridging the digital divide for low-income families?
How do ISPs contribute to bridging the digital divide for low-income families?
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What contributes to the disparity in online content quality between urban and rural areas?
What contributes to the disparity in online content quality between urban and rural areas?
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What does digital literacy NOT include?
What does digital literacy NOT include?
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Which protocol is designed primarily for the transmission of information across the internet?
Which protocol is designed primarily for the transmission of information across the internet?
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What can be a consequence of using technology in educational settings?
What can be a consequence of using technology in educational settings?
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Which of the following is NOT a step in how DNS resolves a domain name?
Which of the following is NOT a step in how DNS resolves a domain name?
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What is the smallest possible addressable unit of memory in most modern computers?
What is the smallest possible addressable unit of memory in most modern computers?
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Which of the following statements best describes the concept of overflow in computing?
Which of the following statements best describes the concept of overflow in computing?
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Which encoding standard was one of the first to standardize the representation of characters in binary?
Which encoding standard was one of the first to standardize the representation of characters in binary?
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What is a significant drawback of using ASCII encoding?
What is a significant drawback of using ASCII encoding?
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What is the definition of 'roundoff' in the context of computer programming?
What is the definition of 'roundoff' in the context of computer programming?
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Which category of data compression allows for a complete restoration of original data?
Which category of data compression allows for a complete restoration of original data?
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What kind of protocol allows public access and modification of its code without permission?
What kind of protocol allows public access and modification of its code without permission?
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The IEEE 754 standard is primarily used for which type of data representation?
The IEEE 754 standard is primarily used for which type of data representation?
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Which of the following is NOT a factor influencing data compression effectiveness?
Which of the following is NOT a factor influencing data compression effectiveness?
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How many bytes are in a Terabyte?
How many bytes are in a Terabyte?
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Which of the following statements is true about floating point representation?
Which of the following statements is true about floating point representation?
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What does the term 'NaN' mean in computing?
What does the term 'NaN' mean in computing?
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What is the impact of a 'fair use' consideration in copyright law?
What is the impact of a 'fair use' consideration in copyright law?
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Which of the following best defines 'bit' in computing?
Which of the following best defines 'bit' in computing?
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What is the primary advantage of Huffman coding?
What is the primary advantage of Huffman coding?
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Which of the following describes lossy data compression?
Which of the following describes lossy data compression?
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What is a limitation of the ASCII encoding standard?
What is a limitation of the ASCII encoding standard?
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What differentiates Unicode from ASCII?
What differentiates Unicode from ASCII?
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What does UTF-8 encoding accomplish?
What does UTF-8 encoding accomplish?
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Which of the following best describes 'bit rate' in networking?
Which of the following best describes 'bit rate' in networking?
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Which coding method is primarily used for high-precision data reproduction?
Which coding method is primarily used for high-precision data reproduction?
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What is an effect of excessive latency in a computer network?
What is an effect of excessive latency in a computer network?
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What feature of lossy compression allows manipulation of data precision?
What feature of lossy compression allows manipulation of data precision?
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What does line coding achieve in computer networks?
What does line coding achieve in computer networks?
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Which type of cable primarily transmits data through electrical pulses?
Which type of cable primarily transmits data through electrical pulses?
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What is a characteristic of fiber-optic cables compared to copper cables?
What is a characteristic of fiber-optic cables compared to copper cables?
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What is the role of the forwarding table in a router?
What is the role of the forwarding table in a router?
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What does the term 'single point of failure' refer to in a network?
What does the term 'single point of failure' refer to in a network?
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What happens to packets in an IP routing protocol when they encounter multiple potential paths?
What happens to packets in an IP routing protocol when they encounter multiple potential paths?
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Which aspect of network speed is affected by both bandwidth and latency?
Which aspect of network speed is affected by both bandwidth and latency?
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What is a potential negative consequence of having many redundant paths in a network?
What is a potential negative consequence of having many redundant paths in a network?
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Which addressing system provides a significantly larger number of addresses compared to its predecessor?
Which addressing system provides a significantly larger number of addresses compared to its predecessor?
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What is a significant barrier contributing to the digital divide?
What is a significant barrier contributing to the digital divide?
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What is one of the main purposes of load testing in network engineering?
What is one of the main purposes of load testing in network engineering?
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Which protocol offers a faster means of data transport but solves fewer problems compared to TCP?
Which protocol offers a faster means of data transport but solves fewer problems compared to TCP?
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What type of connection is typically more portable and user-friendly in environments without physical cables?
What type of connection is typically more portable and user-friendly in environments without physical cables?
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What issue can frequently occur in packet transmission across networks?
What issue can frequently occur in packet transmission across networks?
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What problem arises when a government implements an internet kill switch?
What problem arises when a government implements an internet kill switch?
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What is the main purpose of TCP in data transmission?
What is the main purpose of TCP in data transmission?
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What process is used to establish a connection in TCP?
What process is used to establish a connection in TCP?
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What information does a UDP header contain?
What information does a UDP header contain?
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What is a key characteristic of a dynamic IP address?
What is a key characteristic of a dynamic IP address?
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What is the function of SMTP in internet communication?
What is the function of SMTP in internet communication?
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Which statement about SSL/TLS is true?
Which statement about SSL/TLS is true?
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Which of the following best describes asymmetric encryption?
Which of the following best describes asymmetric encryption?
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What is a characteristic of lossless data compression?
What is a characteristic of lossless data compression?
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Which of the following protocols is used for managing webpages effectively?
Which of the following protocols is used for managing webpages effectively?
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In the context of internet protocols, what is the role of the IETF?
In the context of internet protocols, what is the role of the IETF?
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What security risk is associated with cookies in web browsing?
What security risk is associated with cookies in web browsing?
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What is an example of a substitution cipher?
What is an example of a substitution cipher?
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Which type of error occurs when a software variable exceeds its maximum limit?
Which type of error occurs when a software variable exceeds its maximum limit?
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What is the function of a checksum in data transmission protocols?
What is the function of a checksum in data transmission protocols?
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Flashcards
Cold War and Internet
Cold War and Internet
The Cold War influenced the development of the Internet.
Point-to-point connections
Point-to-point connections
The Internet uses point-to-point connections for reliability and resilience.
First universities on the Internet
First universities on the Internet
UCLA and Stanford were the first universities connected to the Internet.
IPv4 vs. IPv6
IPv4 vs. IPv6
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Digital certificate (HTTPS)
Digital certificate (HTTPS)
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Encryption benefits
Encryption benefits
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Risks of over-security
Risks of over-security
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Physical vulnerabilities
Physical vulnerabilities
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Rogue access point
Rogue access point
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Cyber security practices
Cyber security practices
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Search engine indexing
Search engine indexing
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Ranking algorithm
Ranking algorithm
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Machine learning in search
Machine learning in search
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Distance learning solution
Distance learning solution
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Types of cyberbullying
Types of cyberbullying
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Preventing cyberbullying
Preventing cyberbullying
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Censorship debate
Censorship debate
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Enemies of the Internet
Enemies of the Internet
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Government censorship tactics
Government censorship tactics
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Impact of internet governance
Impact of internet governance
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World Wide Web
World Wide Web
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Redundancy
Redundancy
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Cloud Computing
Cloud Computing
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Dynamic Routing
Dynamic Routing
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Internet Protocols
Internet Protocols
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Open Standards
Open Standards
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ICANN
ICANN
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IP Addressing
IP Addressing
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Bandwidth vs Latency
Bandwidth vs Latency
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Encryption
Encryption
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Cybersecurity
Cybersecurity
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One-Way Function
One-Way Function
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Certificate Authority
Certificate Authority
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Asymmetric Encryption
Asymmetric Encryption
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Trial and Error Decoding
Trial and Error Decoding
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Government Censorship
Government Censorship
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Search Engine Results Variability
Search Engine Results Variability
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Filter Bubbles
Filter Bubbles
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Google Search Benefits
Google Search Benefits
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Privacy Concerns with Google
Privacy Concerns with Google
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Digital Divide
Digital Divide
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Benefits of Computing Innovation
Benefits of Computing Innovation
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Digital Collaboration
Digital Collaboration
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Bit
Bit
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Representing Values with Bits
Representing Values with Bits
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Character Representation
Character Representation
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Analog vs. Digital Data
Analog vs. Digital Data
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Sampling Rate
Sampling Rate
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Bit Depth
Bit Depth
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Null Byte
Null Byte
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Copyright Violation
Copyright Violation
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Digital Rights Management (DRM)
Digital Rights Management (DRM)
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Kilobyte
Kilobyte
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DMCA
DMCA
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Fair Use
Fair Use
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Megabyte
Megabyte
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Creative Commons
Creative Commons
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Gigabyte
Gigabyte
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Open Source License
Open Source License
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Terabyte
Terabyte
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Floating Point
Floating Point
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Open Access Movement
Open Access Movement
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Network Topology
Network Topology
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Overflow
Overflow
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Roundoff Error
Roundoff Error
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LAN vs WAN
LAN vs WAN
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Data Center Network (DCN)
Data Center Network (DCN)
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ASCII
ASCII
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NaN
NaN
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Lossless Compression
Lossless Compression
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Lossy Compression
Lossy Compression
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Copyright
Copyright
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Firmware
Firmware
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Income Inequality
Income Inequality
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Homework Gaps
Homework Gaps
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Digital Literacy
Digital Literacy
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Pros of Technology in Schools
Pros of Technology in Schools
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Cons of Technology in Schools
Cons of Technology in Schools
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GeoChicas
GeoChicas
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Missing Maps
Missing Maps
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DNS Spoofing
DNS Spoofing
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HTTP Requests
HTTP Requests
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Primary Domain
Primary Domain
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Run-length coding
Run-length coding
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Huffman coding
Huffman coding
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Lossy data compression
Lossy data compression
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Chroma subsampling
Chroma subsampling
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JPEG
JPEG
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Unicode
Unicode
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UTF-8
UTF-8
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Bit rate
Bit rate
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Latency
Latency
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Copper cables
Copper cables
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Twisted pair cable
Twisted pair cable
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Fiber-Optic cables
Fiber-Optic cables
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Wireless communication
Wireless communication
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Bandwidth
Bandwidth
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IP packets
IP packets
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Routing process
Routing process
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Fault tolerance
Fault tolerance
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Load testing
Load testing
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Internet scalability
Internet scalability
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Internet shut down tactics
Internet shut down tactics
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Root Name Server
Root Name Server
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Three-Way Handshake
Three-Way Handshake
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TCP Header
TCP Header
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UDP
UDP
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IP Protocol
IP Protocol
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SMTP
SMTP
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IP Address
IP Address
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Dynamic IP Address
Dynamic IP Address
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Static IP Address
Static IP Address
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Virus
Virus
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Phishing
Phishing
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Lossless Data Compression
Lossless Data Compression
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Study Notes
Internet History
- Cold War spurred Internet invention.
- Internet's structure—multiple point-to-point connections—reduces vulnerability. If one site goes down, others can still communicate.
- First Internet network involved UCLA and Stanford.
- Public access to the Internet began in 1983.
- NSF replaced DARPA in managing the Internet.
Internet Structure and Protocols
- Lock/HTTPS indicates secure website communication via digital certificates (secure verification).
- The Internet transmits binary information.
- Transmission methods include electricity (inexpensive but prone to signal loss), light (fast, long-distance with minimal signal degradation but expensive), and radio waves (mobile but short range).
- IP addresses are categorized (inside/outside) by networks like your home network, combining devices into a single IP address.
- IPv4 uses 32-bit addresses.
- IPv6 (with 128 bits) provides significantly more addresses.
Internet Concepts and Functionality
- The World Wide Web is a subset of the Internet.
- The World Wide Web's expansion spurred applications like online shopping and personal blogs.
- The Internet’s design prioritizes redundancy—multiple backup systems and alternative pathways ensure continuous operation.
- "Computer farms", which are vast computing clusters ("the cloud"), handle complex computations.
- The Internet’s fault-tolerance is crucial due to widespread dependence and system complexities.
- Internet routing is dynamic and re-routes data based on network conditions.
- Protocols (communication standards) enable smooth interaction among diverse Internet devices.
- The Internet's design incorporates layered abstraction for protocol management.
- Open standards allow anyone to contribute to software and hardware development.
Internet Governance and Administration
- The U.S. government controlled domain name hierarchy until 2009.
- ICANN now manages the domain name hierarchy, but ongoing international criticism persists concerning independence from the U.S. government.
- ARPA, a U.S. Department of Defense agency, initialized the Internet (1969) in what became the network’s foundation.
- IP addresses were initially for research projects and later transitioned to commercial use, governed initially by ARPA and then NSF but finally managed by ICANN.
Internet Addressing
- Domain names and IP addresses form hierarchical addressing systems.
- Subdomains (paths in URLs) locate specific files within server hierarchies.
- IP addresses simplify location identification on the Internet, hiding the system's complexity from users.
- Internet hierarchy facilitates efficient functioning and distribution of IP address requests.
- Bandwidth describes the transferred data rate, while Latency represents data travel time.
Internet Security
- Encryption protects private data on public networks.
- The Caesar Cipher (with a 1-character key) is a historical example of encryption.
- Modern cryptographic keys like 256-bit encryption provide strong security.
- Critical infrastructure sectors vulnerable to hacking include nuclear facilities, healthcare records, and water supply systems.
- Individuals can be lured into installing viruses, or vulnerabilities can be exploited.
- Cyberattacks lead to data theft/deletion, program control, or remote system takeover.
- Security best practices include using strong passwords, verifying website authenticity, updating security software, and avoiding untrusted downloads.
- Public key encryption relies on Certificate Authorities to verify website/user identity.
Internet Censorship
- Top "Internet enemy" countries include Bahrain, Belarus, China, Cuba, and Ethiopia.
- Public concern exists about government control of the Internet.
- Methods of Internet censorship include IP blocking, domain tampering, URL filtering, keyword blocking, network disconnection, and network attacks.
Internet Search
- Search engines use pre-built indexes (built through automated crawling called "spiders") for search results rather than real-time processing.
- Ranking algorithms order pages based on linked sites.
- Machine learning, a type of artificial intelligence, powers search engine relevance.
Communication and Technology
- Common communication technologies include SMS, Instagram, Facebook, Snapchat, FaceTime, and newer platforms.
- Online communication was crucial during the COVID-19 pandemic for distance learning.
Online Textbooks
- Pros: Portability and convenience.
- Cons: Rely on electronics, connection/battery dependence, and social isolation.
Cyberbullying
- Types of cyberbullying include revenge porn, the vengeful angel, the power-hungry, the mean girls, and the inadvertent cyberbully.
- Addressing cyberbullying requires clearer rules and consequences from social media platforms, along with school policies limiting access to cyberbullying platforms.
Internet Usage Benefits and Costs
- Internet accessibility democratizes information. Transparency enhances public awareness.
- Online access can lead to filter bubbles. Political polarization may be intensified.
- Individual users can benefit from tailored information. Privacy concerns also exist because platforms often collect information about users' online activity.
Global Computing and the Digital Divide
- Top three countries in population, internet users, and online percentage include China, India, and the US.
- Factors that contribute to the digital divide include affordability, geography, government restrictions, and a lack of digital literacy.
- Programs like the FCC E-Rate aim to bridge the digital divide in the US.
Computing Benefits
- Computing innovations, such as music synthesizers, enhance creative expression.
- Computing facilitates problem solving through access to public data and analyses such as DNA sequencing and protein folding.
Digital Collaboration
- Successful software projects must cater to diverse users and cultural expectations across various demographics.
- Teams incorporate diverse user feedback and perspectives to design inclusive solutions.
- The Internet and computers enable collaboration in various forms, from virtual meetings to collaborative documents and revision controls.
Bits and Binary
- The bit is the smallest unit of digital information, represented as 0 or 1.
- Using multiple bits creates more possible values. Each additional bit doubles the possible values.
- 8 bits form a byte, crucial for representing characters.
- Unicode, a more comprehensive standard than ASCII, supports a wide range of characters and languages.
- UTF-8 is the widely-used encoding standard for the web.
Binary Representation
- Binary representations can represent various data types (e.g., integers, images, text).
- Sampling, quantization, and binary encoding are methods for converting analog data (like sound or image) into binary format.
- Higher bit depth results in higher precision of reproduction in recreating original analog content.
Data Compression
- Data compression's effectiveness depends on redundant data and chosen compression algorithms.
- Lossless and lossy compression are two main categories. Lossless methods preserve all data, while lossy methods sacrifice some detail for more significant compression.
Internet Protocols and Architecture
- Protocols provide rules of behavior on the Internet. Open protocols foster innovation; closed protocols restrict access.
- Applications are layered in terms of their complexity, helping manage the large number of interacting protocols within the system.
Computer Limitations
- Overflow errors occur when a value exceeds a computer's capacity.
- Roundoff errors occur due to using a finite representation for infinitely precise parts.
- Precision errors depend on the number of bits/bytes available to store data, so more bits give more precision.
Copyright, DRM, DMCA
- Copyright laws grant creators exclusive rights but eventually allow works to enter the public domain.
- Fair use exceptions permit certain use of copyrighted material for limited purposes.
- Digital Rights Management (DRM) restrictions on copyrighted material restrict use (especially in digital files).
- DMCA laws affect the creation and distribution of DRM bypass technologies.
- Issues with DMCA abuse arise from automated detection or human review processes.
Creative Commons and Open Source
- Creative Commons licenses allow varying degrees of usage of creative works by others. Open source licenses allow modification of software.
- Security concerns often exist with open-source projects.
Open Access Research
- The open-access movement aims to make scientific research freely available online.
- Peer-review processes are important for quality control of research for transparency and credibility. Issues exist with open access research that have not been subject to the same measures.
- Open-access databases facilitate wider data availability and usage.
Computer Networks
- Network topologies describe various ways to connect networked devices. Local area networks (LANs) cover a small area, whereas wide area networks (WANs) cover a large geographical area.
Physical Network Connections
- Connections use physical mediums like copper cables (using electricity) and fiber-optic cables (using light pulses). Wireless connections use radio waves.
Internet Speed
- Internet speed is a combination of bandwidth (data transfer rate) and latency (delay).
IP Addressing
- Hierarchical IP addressing simplifies data routing.
IP Packets
- Packets contain headers and data for routing data around a network.
IP Routing Protocols
- Routers forward packets through a network based on forwarding tables and destination addresses.
Redundancy and Fault Tolerance
- Redundancy (multiple paths for data transmission) builds fault tolerance into networks.
- Redundancy and fault tolerance increase reliability.
Packet Problems
- Data packets can get lost, corrupted, or arrive out of order.
Internet Scalability
- Features like IP addressing and open protocols enhance the Internet's scalability and capacity to support many devices.
- Internet speed limits, or throughput limits of routers, threaten scalability.
- Load testing helps in anticipation of traffic spikes.
Digital Divide
- The digital divide encompasses factors like affordability of devices and infrastructure, limited access in rural areas, government policies that restrict access, and varying levels of digital literacy.
- Programs such as the FCC E-Rate initiative aim to increase access to technology. Gaps persist due to income inequality, education levels, ethnicity, and geographical location.
- Digital literacy is a critical component of bridging the digital divide.
HTML
- HTML (HyperText Markup Language) defines the visual presentation of webpages.
- Cookies aid in website remembrance of user information.
IP Addresses
- IP (Internet Protocol) addresses assign unique identifiers to devices on a network.
- IPv4 uses 32-bit addresses (limited number of unique addresses); IPv6 employs 128 bits for significantly more addresses.
- IP addresses can dynamically change with connecting to a Wi-Fi network. Open protocols provide standardization and smooth communication.
Encryption and Security
- Encryption protects sensitive data sent over networks.
- Symmetric encryption uses the same key for encryption/decryption; asymmetric encryption uses separate keys.
- Viruses, DDoS (Distributed Denial-of-Service) attacks, and phishing attempts pose security risks. A successful solution combines layered security measures and educated users to protect against cyberattacks.
Internet Protocols
- Protocols help devices communicate by establishing standards to format and convey data among the many devices that comprise the global networks. Layers of structure allow for organization and complex operation of the network.
URLs
- Uniform Resource Locators (URLs) direct to specific resources online (websites, documents, etc.).
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Test your knowledge on internet technologies, protocols, and cybersecurity issues with this engaging quiz. From the basics of IPv4 and IPv6 to the implications of cyberbullying and government censorship, this quiz covers a wide range of topics related to the digital world.