Security, privacy and data integrity：练习题

A user receives an email that appears to be from their bank, asking them to click a link and enter their login credentials. What type of security threat is this?

In the context of data transfer, a checksum is used to:

Which statement best describes the difference between data privacy and data security?

A database administrator uses access rights to ensure that junior staff can only view records, while senior managers can edit them. This is a measure to protect which of the following?

A website redirects a user to a fraudulent site even though the user typed the correct URL into their browser. This is an example of which security threat?

Explain the difference between data security and data privacy.

A data packet consisting of the binary value \(1011001\) is sent using even parity. Identify the value of the parity bit that must be appended to the data.

A checksum is used to detect errors during the transfer of a large file. Explain the process of how the checksum is used to verify the integrity of the data once it has been received.

Validation and verification are both used to protect the integrity of data.

a) Define data validation.
b) A system requires a user to enter a new employee ID which must be exactly 6 characters long and start with the letter 'E'. Identify two specific validation checks that should be performed on this input.

Data transmission often utilizes parity checks to detect errors.

a) Explain how a parity block (2D parity) can detect and correct a single-bit error, whereas a simple parity bit can only detect an error.
b) If an even parity scheme is used for the byte \(1011001x\), what must the value of the parity bit \(x\) be?