Watermark — Learn free

Self-check

Questions 1–10 of 10

1. What is a watermark?
Question 1A. A compression technique for large imagesB. A recognisable image or pattern embedded into a digital or physical document to identify its authenticity or protect it from unauthorised useC. A database index used to speed up searchesD. A timestamp recorded when a file is savedE. A digital signature stored in file metadata
2. In digital media such as images or videos, what form does a watermark often take?
Question 2A. A hidden metadata tagB. An encrypted file headerC. A semi-transparent logo or text overlaid onto the contentD. A separate licence fileE. A checksum appended to the file
3. Which purpose of a watermark involves content creators asserting ownership and discouraging unauthorised use?
Question 3A. BrandingB. AuthenticationC. SecurityD. Copyright protectionE. Compression
4. Why might a company add its logo as a watermark to content shared online?
Question 4A. To reduce the file sizeB. To encrypt the contentC. To verify the paper's legitimacyD. To prevent the content from being openedE. For branding, promoting brand recognition even when the content is shared
5. How can watermarks serve a security purpose for internal documents?
Question 5A. They discourage leaks or unauthorised distribution of confidential documentsB. They encrypt the document contentsC. They automatically delete the document after readingD. They restrict who can log in to the document systemE. They compress the document for storage
6. How are watermarks embedded in physical documents such as banknotes or certificates?
Question 6A. Printed on top after the document is finishedB. During the papermaking processC. Stamped by hand at the point of issueD. Added by a laminating machineE. Attached as a separate hologram sticker
7. What purpose do watermarks serve on banknotes and certificates?
Question 7A. BrandingB. Copyright protectionC. Authentication, to verify the document's legitimacyD. Reducing printing costsE. Tracking the document's location
8. In which contexts are watermarks said to be commonly used?
Question 8A. Only in software licensingB. Only in email communicationC. Only in database backupsD. Photography, art, documents and currencyE. Only in video streaming
9. What caution is given about using watermarks?
Question 9A. They must always be placed in the top-left cornerB. They should never be used on digital contentC. They are legally required on all published imagesD. They should be fully opaque to be effectiveE. They should be used thoughtfully to avoid distracting from the main content, and not every situation requires one
10. Which of the following is NOT a stated purpose of a watermark?
Question 10A. Encrypting the content so it cannot be readB. Copyright protectionC. BrandingD. Security of confidential documentsE. Authentication of physical documents