CIS361 Data Communications and Networks

Review for First Quiz

 

1. What is communication? What is telecommunication?

2. Define each of these terms

1. reliability
2. availability
3. real time
4. real enough time
5. source
6. sink
7. medium
8. switched line
9. private line
10. queuing
11. think time
12. MTBF
13. MTTR

3. What are some reasons that an industry of this sort would benefit from laws and regulation?

4. When the Bell System was spit up, how many RBOCs were created? How many separate RBOCs are there now?

5. What is a telecommunications architecture? What is a standard?

6. What is the difference between connection and communication?

7. What are the seven layers of the ISO-OSI model?

8. What is the main difference between the V. standards and the X. standards?

9. What is meant by each term:

1. SNA
2. BNA
3. DNA
4. TCP/IP
5. ARPANET
6. ISO
7. ITU-T

10. What are the five major functions of a telephone?

11. Define each term:

1. switchhook
2. sidetone
3. dial pulsing
4. DTMF
5. on-hook
6. off-hook
7. central office
8. blocking
9. PSTN
10. PBX
11. centrex

12. What are the three attributes of a wave that are commonly modified in transmission?

13. What is the range of frequencies commonly associated with:

1. the best human hearing __________________________________
2. a transmitted phone conversation __________________________________
3. typical human hearing __________________________________

14. Explain FDM in terms of line capacity and typical transmission bandwidth.