Choose the appropriate answer. What devices … you use?

Read the text and answer the questions.
We've come across a few organisations recently who have been using open source software. We think this is a big mistake. Why? Well, there are several reasons.
First, there's the issue of cost. Many people think that open source software is cheaper than proprietary software. However, this is not true. Yes, it costs less to buy to begin with but that's not the only cost. There's also the cost of training and the cost of support. A lot of proprietary software is very common, so there are many people who already know how to use it. But open source is often unfamiliar, so additional training is required. Also, open source operating system providers often make their money by charging for support; but if you buy proprietary software, support is free.
Secondly, companies that produce proprietary software can pay salaries to their software developers. This means that proprietary software is usually better, with more features, a better-looking user interface and fewer bugs.
Finally, with operating systems, there is one major disadvantage of open source systems. Most commercial software doesn't run on open source operating systems. Open source applications for word processing do exist but for others, such as design and video editing, they are not very good. For those purposes, the industry standard is to use proprietary software.

48. 
    Why is using open sourse software a big mistake?
    

1. 
   Because they are illegal
   
2. 
   Because they are cheaper
   
3. 
   Because they more expensive
   
4. 
   It is not a mistake at all.
   

49. 
    Why is proprietary software cheaper than open source software?
    

1. 
   Because it requires additional training
   
2. 
   Because it doesn’t require additional training
   
3. 
   Because support costs much
   
4. 
   Because it is not common.
   

50. 
    What is the disadvantage of open source software?
    

1. 
   It requires additional training
   
2. 
   Its support costs much
   
3. 
   Most commercial software doesn't run on open source operating systems
   
4. 
   All answers are correct.
   

51. 
    Which multimedia equipment do you use to listen to the music?
    

1. 
   Webcam
   
2. 
   Microfon
   
3. 
   Headphones
   
4. 
   Camera
   

52. 
    Which multimedia equipment do you use to make your voice audible?
    

5. 
   Webcam
   
6. 
   Microfon
   
7. 
   Headphones
   
8. 
   Camera
   

53. 
    Which multimedia equipment do you use to take a photo or video?
    

9. 
   Webcam
   
10. 
    Microfon
    
11. 
    Headphones
    
12. 
    Camera
    

54. 
    Which multimedia equipment do you use to speak to someone online seeing each other?
    

13. 
    Webcam
    
14. 
    Microfon
    
15. 
    Headphones
    
16. 
    Camera