Questions & explanations
1. What is a challenge when comparing information from oral tradition with information from academic research?
A challenge is that oral tradition and academic research have different ways of proving truth. Academic research trusts written records, peer review, and repeatable experiments. Oral tradition trusts memory, community agreement, and cultural authority. Directly comparing them can be unfair because each is meant for different purposes. Also, academic researchers might demand written proof that oral tradition cannot give. Another challenge is that oral traditions sometimes contain symbolic or metaphorical language that can be misunderstood as false facts. The best approach is to see both as valuable but to respect their own methods.
2. Why would a researcher prefer a scholarly article over a blog post when studying a past event?
A scholarly article is written months or years after the event by experts. It goes through a careful check called peer review, where other experts check the facts. Blog posts are written quickly, often with less checking. Scholarly articles include references to other studies, so you can see where the information came from. They also explain methods and any limits. For past events, you want a source that has had time to gather all facts. For example, a study on the 2008 financial crisis will be more accurate than a blog written in 2008. The timeline shows that scholarly articles are more trusted for history.
3. Explain how a password manager protects against data breaches if its server is compromised.
Password managers use zero-knowledge architecture: they encrypt your vault on your device before sending it to the server. The server only stores encrypted data and never has the decryption key (your master password). Even if an attacker steals the entire database, they see only scrambled text. The master password is never sent to the server, only used locally to encrypt and decrypt. Some managers also add a user-specific salt to prevent precomputed attacks. So a server breach does not directly expose your passwords. Only a weak master password or a keylogger on your device could breach your vault.
4. Give an example of a situation where a secure enclave is more appropriate than a TPM.
A secure enclave is more appropriate than a TPM when you need to protect sensitive user data like biometrics or payment information on a mobile device. For example, in a smartphone that uses fingerprint or face recognition to unlock the device or authorize payments, the secure enclave processes this data in an isolated environment. A TPM is better for platform integrity checks and disk encryption on a laptop. Secure enclaves are designed for real-time, user-interactive tasks, while TPMs are for system-level security. Mobile devices often have a secure enclave, whereas laptops usually have a TPM.
5. Compare a zero-knowledge password manager with a non-zero-knowledge one for privacy.
A zero-knowledge password manager never sends your master password or decrypted data to its servers. The company cannot read your passwords, so even if they are forced to hand over data, they have nothing readable. A non-zero-knowledge manager may store your vault encrypted, but the decryption key is also stored or derived from data the server knows. Some older managers have access to your master password or can reset it, meaning the company could theoretically access your vault. Zero-knowledge gives you full privacy: no one but you can see your passwords. It is the preferred privacy model.
6. Why is digital preservation important for society's information literacy?
Digital preservation is important because future generations need access to today's information to learn and build knowledge. If we lose data, we lose part of our history and culture. For information literacy, we need to be able to check original sources, even years later. For example, a news article used in a study must still be available when others try to verify the findings. Without preservation, claims cannot be verified, and misinformation can spread. Teaching digital preservation also reminds students that information is not permanent; they must be careful to save and cite sources.
7. Give an example of a situation where an oral tradition might be a more reliable source than a written one.
For example, to learn the correct way to perform a traditional ceremony, oral tradition is more reliable because the elders have the exact steps and meanings. Written descriptions might miss important parts or be written by outsiders who did not understand fully. Another situation is local history of a place without written records; oral stories from people who lived there can provide accurate details. However, reliability depends on the teller's memory and intention. Even then, oral traditions are trusted within their community because they are kept and checked by many people over time.
8. Compare the security of a locally stored password database vs. a cloud-synced password vault.
A locally stored password database never leaves your device, so it is immune to server breaches. However, if your device is lost or damaged, you may lose all passwords unless you have a backup. A cloud-synced vault syncs your data across devices, but the encrypted data is stored on the provider's server. The risk is that a breach of the server could expose encrypted vaults, but they are still protected by your master password. Both can be secure if the master password is strong and encryption is solid. Cloud syncing adds convenience and redundancy but relies on the provider's security.
9. Compare using a blue light filter on your phone versus turning off screens completely before bed.
A blue light filter on your phone reduces the amount of blue light that can disturb sleep, but it does not remove all effects of screen time. Turning off screens completely is more effective because the mental stimulation from content, like social media or games, can still keep your brain alert. Even with a filter, the content may make you anxious or excited. The SHI would score better if you avoid screens entirely for an hour before sleep. For best sleep hygiene, turning off screens completely is recommended. A filter is only a small help, not a replacement for a full digital sunset.
10. What did President Obama's 2009 proclamation emphasize about information literacy?
In 2009, President Obama declared October as Information Literacy Awareness Month in the United States. He said that information literacy is a tool for everyone to find reliable information and make good decisions. He emphasized that in the digital age, people need skills to evaluate the huge amount of information available. Obama encouraged schools, libraries, and communities to teach these skills. This proclamation raised public awareness about the importance of being able to tell fact from fiction. It showed that even national leaders consider information literacy a critical skill.
11. Compare the use cases of an HSM in a data center vs. a TPM in a personal laptop.
An HSM in a data center is a powerful, network-attached device that handles many transactions per second, like signing digital certificates or encrypting database backups. It is used by large organizations to protect critical keys shared across many servers. A TPM in a personal laptop is a small, low-cost chip that secures one device, such as storing the hard drive encryption key or verifying the boot process. The HSM is designed for high throughput and physical security in a rack, while the TPM is for individual user device security. Both protect keys but at very different scales.
12. What did the American Library Association say about information literacy in 1989?
In 1989, the American Library Association (ALA) said an information literate person can recognize when they need information and can find, evaluate, and use it effectively. They said this skill is essential for lifelong learning and for living in a democracy. The ALA also noted that information literacy is not just about books but also about computers and other technologies. Their definition became a standard reference. It emphasized that information literacy is a set of abilities that everyone should have. This report helped spread the concept to schools and libraries worldwide.