21123207
Description
Flashcards by Finley McMahon, updated more than 1 year ago
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Created by Finley McMahon
almost 5 years ago
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| Question | Answer |
| what is encryption? | Encryption is when you scramble a message or data (plaintext) using a cipher to make it difficult to read. The scrambled message is called ciphertext. |
| Does encryption stop data being stolen? | Encryption can only stop people intercepting emails by scrambling the letters so it is unreadable. |
| Name an advantage of the RING topology method. | Cheap to set up. |
| Name an advantage of the BUS topology method | It makes it easy to connect a new device. |
| Name an advantage of the STAR topology method. | If a device fails, all other devices will not fail. |
| What is a LAN and WAN. | A LAN is a Local Area Network that takes up a small geographical area. A WAN is a Wide Area Network that takes up a large geographical area. |
| Name a disadvantage of the RING topology method. | If a device fails, the others will do the same. |
| Name a disadvantage of the BUS topology method. | If the main cable fails or is damaged, others devices will fail. |
| Name a disadvantage of the STAR topology method. | It is very expensive to set up. |
| What is the purpose of a NIC? | A NIC (or Network Interface Card) is a device that allows computers to connect to a network. |
| What is the purpose of a Router? | A Router connects devices within a network. |
| What is the purpose of a Hub? | Hubs are devices commonly used to connect segments of a LAN. |
| What is the Purpose of a Switch? | A Switch can be used to connect multiple hosts (PCs) to the network. |
| What is the purpose of a WAP? | A WAP (or Wireless Access Point) is a networking device that allows other Wi-Fi devices to connect to a wired network. |
| What is the purpose of a Web Browser? | A Web Browser is an application used to access and view websites. |
| What is the difference between a Hub and a Switch? | Switch is more efficient than the Hub. A Switch can join multiple computers within one LAN, and a Hub just connects multiple Ethernet devices together as a single segment. |
| What is the internet? | The internet is a system of Networks that allow users to talk to each other and share information. |
| What is the World Wide Web? | The World Wide Web is the part of the internet that shares Web pages and Websites |
| What is the purpose of an ISP? | An ISP (or Internet Service Provider) is a company that provides internet access to Companies, Families and even Mobile Users. |
| What is an IP address? | An IP address (or Internet Protocol Address) is a long number written in binary used to access Websites and Web Pages |
| What is a URL? | A URL (or Uniform Resource Locator) is a way of naming documents accessible over the internet. |
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