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Flashcards

Computer Science

Nathan Pound Inglês 30 flashcards

Flashcards do conjunto (30)

  1. 1Question: What is the purpose of a firewall?Answer:
    To prevent unauthorized connections coming in to and out of a network
  2. 2Question: What is the purpose of a username and password?Answer:
    To identify the user and to verify they are who the claim to be
  3. 3Question: What makes a secure password?Answer:
    A secure password should be one that you will easily remember and be a mixture of upper-case and lower-case letters, numbers and characters
  4. 4Question: Why are access levels useful?Answer:
    They control the level of access a user has to the network
  5. 5Question: What is encryption?Answer:
    Encryption disguises data so that it can't be understood
  6. 6Question: What is the purpose of anti-virus software?Answer:
    Anti-virus software detects and removes viruses from computers
  7. 7Question: What is an archive?Answer:
    A copy of old data that is removed from the network and kept safe for later use
  8. 8Question: Why do organisations have network policies?Answer:
    A network policy forms an agreement between the organisation and its users on acceptable usage of the network.
  9. 9Question: How do you know if a website is secure?Answer:
    The prefix of the website is "https"
  10. 10Question: What is a dynamic website?Answer:
    A website that has interactive elements
  11. 11Question: What web development languages are most websites written in?Answer:
    HTML and CSS with some scripting languages like JavaScript and PHP
  12. 12Question: What does a cascading style sheet (CSS) do?Answer:
    It is where the different formatting choices are stored for the website and is used to edit the appearance of the website
  13. 13Question: What is a mashup?Answer:
    A website or application which mixes code from different external sources
  14. 14Question: What are cookies?Answer:
    Text files that are stored on your computer that tell a website if you have been to that site before
  15. 15Question: What identifies the kind of device that is accessing the website?Answer:
    A protocol
  16. 16Question: What is the difference between the client-side scripts and the Server-Style Scripts?Answer:
    Client-side scripts are programs that are processed by the web browser and server-style scripts are processed by the web server
  17. 17Question: How do search engines rank the website result they receive?Answer:
    Websites appear higher up a list of results because they are judged to be more important by the search algorithm. This is measured by the popularity of a site and how many connections it has with other websites
  18. 18Question: What is cloud computing?Answer:
    Cloud computing is storing and using services online, rather than storing them locally on a device such as a hard drive
  19. 19Question: Why is cloud computing advantageous?Answer:
    Data backed up in the cloud with a reliable provider can be more reliable than storing your information on a hard drive or USB flash memory stick
  20. 20Question: What is a web browser?Answer:
    Software that allows the user to access web pages, documents and web applications on the internet
  21. 21Question: What is needed for a broadband connection to the internet?Answer:
    An ADSL modem, an ISP and wired or wireless connection
  22. 22Question: What can affect the speed of data transfer over a telephone line?Answer:
    The quality of the telephone line and the distance between the modem and the telephone exchange
  23. 23Question: Which type of connection is preferable for streaming high-definition video?Answer:
    Fibre optic
  24. 24Question: What is Fibre Optic?Answer:
    Fibre optic cable is more expensive than most connection types but has a higher data transfer rate.
  25. 25Question: What is a protocol?Answer:
    A protocol is a set of rules that defines how devices communicate
  26. 26Question: What does the hypertext transfer protocol (HTTP) do?Answer:
    It transfers web pages from web servers to the client
  27. 27Question: What does compressing a file do?Answer:
    It reduces the size of a file
  28. 28Question: What is a buffer?Answer:
    A temporary storage space where data can be held and processed
  29. 29Question: What happens at the 'handshaking' between two devices?Answer:
    The client requests access, the server grants it, and the protocols are agreed
  30. 30—

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Descrição
My man these flashcards will make your understanding of Computer Science better af.
Criado por
Nathan Pound
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