1.
A (n) ____________ system is a small, wireless handheld computer that scans an item's tag and pulls up the current price (and any special offers) as you shop.
Answer: Option 'A'
PSS
2.
SMTP, FTP and DNS are applications of the ____ layer.
Answer: Option 'D'
application
3.
With an IP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts?
Answer: Option 'C'
252
4.
Before data can be transmitted, they must be transformed to ________.
Answer: Option 'C'
electromagnetic signals
5.
DSL is an example of a __________ connection:
Answer: Option 'A'
Network