Learning Aim B Quick Test (ANSWERS) – Julita Kurek
1. What is data exchange?
Answer: Data exchange is the process of taking data structured under a source schema and actually transforming
it into data structured under a target schema, so that the target data is an accurate representation of the source
data.
2. What is simplex?
Answer: It’s like a normal radio; you can listen but can’t answer to what they’re saying.
3. What is half duplex?
Answer: It’s when only one person can talk at a time e.g. woki toki
4. What is duplex?
Answer: It’s when both sides can talk at the same time.
5. Describe this transmission method? Next to each answer put either Bi-directional, Serial or parallel.
Answer: Serial transmission - In serial transmission,
bits are transmitted one at a time over a single wire /
channel.
6. Describe this transmission method?
Answer: transmitting in both directions – Bidirectional.
7. Describe this transmission method?
Answer: Parallel transmission -
Parallel transmission port for a printer
In parallel transmission, a number
of bits of data are transmitted
simultaneously (at the same time) over
an equal number of wires / channels
8. What is codec?
Answer: a device or program that compresses data to enable faster transmission and decompresses received
data.
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9. What is VOIP?
Answer: Voice Over Internet Protocol e.g. Skype.
Julita Kurek
10. What are the Advantages of VOIP?
Answer: An advantage of using VoIP services is that at home workers are able to communicate with their clients
on their own time. It also enables military families to stay in touch during a deployment. It is a convenient way to
communicate with distant family as well.
11. How does the Software for VOIP Work?
Answer: VoIP or Voice over Internet Protocol allows you to take a standard analog telephone signal and turn it
into a digital signal that is transmitted over the Internet. By plugging any standard telephone into a special device
called an ATA (analog telephone adapter) you can use your internet connection to make telephone calls.
12. Describe each of these alternative methods of transmission?
Answers:
13. What is a UTP/STP and what is used for?
Answer:
14. What is Fibre Optic and what is it used for?
Answer:
15. What is a Co-axial and what is it used for?
Answer:
16. What is a infra-red and what is it used for?
Answer:
17. What is micro wave and what is it used for?
Answer:
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18. The sender and recipient(s) of an email do not have to be online at the same time. When one person sends
a message, it is stored on an email server. It waits in store until the recipient signs in, at which point the
server forwards the message to them. This system is known as _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Answer:
19. In relation to sending an email, what do the letters BCC stand for?
Answer: Blind Carbon Copy
20. Why do people send emails as BCC?
Answer:
21. Describe 3 benefits of using email, rather than sending documents through the post
Answers:
22. Describe 3 drawbacks of using email (i.e., what can go wrong?)
Answers:
23. What do the letters SMTP stand for?
Answer:
24. What is SMTP?
Answer:
25. What do the letters POP3 stand for?
Answer:
26. What do the letters IMAP stand for?
Answer:
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