SET 1 Flashcards
(25 cards)
Describe a P2P network
Describe a P2P network
What are the advantages of a P2P network
Cheap to set up and not dependent on server
What are the disadvantages of a P2P network
Poor security and need to backup individually
Describe a client to server network
- Client (user workstation) access program files and data from server
- Server provides resources (programs and files and data) for clients
What are the advantages of a client server network
Central backup available and good security with p
What are the disadvantages of a Client server network
- High cost
- server problems cause network problems
Name two types of transmission Media
Wireless- Radio Waves and Wired-E.g fibre optic cable
Give two disadvantages of Wi-Fi
- Wireless (Wi fi) has a lower bandwidth so is slower
- Wireless is also less secure than wired(cables)
Give two advantages of Wi-Fi
Wireless is convenient as can move around without cables
What additional hardware do you need to setup a wireless network
- Wireless router
- wireless NIC (Network interface card)
- receiver and transmitter on each computer
Give two reasons why you should you get your own wired access to the Internet rather than use next door neighbours Wi-Fi
- Wired is more secure than wireless
- you would be breaking the law if you used your neighbours
How can you prevent neighbours accessing your Wi-Fi
Passwords
State a development in security software that has given confidence to customers for networked online shopping
Firewall as they filter out unwanted website, IP addresses or data
What is a security suit
A number of programs in one to protect your computer
What should a good security suit contain
Anti-virus program, anti- Malware program anti-spyware
How can you speed up data transmission on a network
Compression reduces the amount of data exchanged, therefore faster transfer and load times
Describe the role of a server in web hosting
It stores and provides access to web data when requested from the client
Mobile devices regularly connect to network describe the technologies used to connect a mobile device to a network
- Bluetooth: short distance radio wave based system
- Wi fi: local area radio wave based system
- 3G or 4G :a set of standards that make use of the mobile phone telephone network
Give an advantage and disadvantage of unicode
Advantage: a large range of characters as 16 bit
Disadvantages: takes up more memory
What is unicode
- Unicode code is used to store text
- It converts each character into a 16 bit binary number
What is ASCII code
ASCII code is used to store texts it converts each character into a 8-bit binary number
Give advantages and disadvantages of ASCII code
Disadvantage: limited range of characters as 8-bit
Advantage: takes up less memory
What is the maximum number of colours using 8-bit bit depth
2 to the power 8 = 256
Describe true colour
24 it gives over 16 million colours so beyond human eye distinction
