Q4. Very short question answers: [05]
1. Name any two websites that allow online transactions.
2. What are the different types of networking?
3. What is accessibility option?
4. What do you mean by resolution?
5. State the relationship between primary key and foreign key?
Answers
Answer:
1.Websites that allow online transaction:
1.Websites that allow online transaction:Amazon.
1.Websites that allow online transaction:Amazon.Google.
2.11 Types of Networks in Use Today
Personal Area Network (PAN)
Local Area Network (LAN)
Local Area Network (LAN) Wireless Local Area Network (WLAN)
Local Area Network (LAN) Wireless Local Area Network (WLAN) Campus Area Network (CAN) ...
Local Area Network (LAN) Wireless Local Area Network (WLAN) Campus Area Network (CAN) ...Metropolitan Area Network (MAN) ...
Local Area Network (LAN) Wireless Local Area Network (WLAN) Campus Area Network (CAN) ...Metropolitan Area Network (MAN) ...Wide Area Network (WAN) ...
Local Area Network (LAN) Wireless Local Area Network (WLAN) Campus Area Network (CAN) ...Metropolitan Area Network (MAN) ...Wide Area Network (WAN) ...Storage-Area Network (SAN) ...
Local Area Network (LAN) Wireless Local Area Network (WLAN) Campus Area Network (CAN) ...Metropolitan Area Network (MAN) ...Wide Area Network (WAN) ...Storage-Area Network (SAN) ...System-Area Network (also known as SAN)
Passive Optical Local Area Network (POLAN)
Enterprise Private Network (EPN)
Virtual Private Network (VPN)
3.Hardware and software technologies that help visually or physically impaired people to use the computer. For example, the Accessibility Options control panel in Windows provides keyboard, mouse and screen options for people who have difficulty typing or seeing the screen.
4.a firm decision to do or not to do something.
5.A primary key-foreign key relationship defines a one-to-many relationship between two tables in a relational database. A foreign key is a column or a set of columns in one table that references the primary key columns in another table.