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Synchronous Optical Network (SONET)

Table of Contents:
Definition and Overview
1. Introduction to SONET
2. Why Synchronize?
3. Frame Format Structure
4. Overheads
5. Pointers
6. SONET Multiplexing
7. SONET Network Elements
8. SONET Network Configurations
9. What Are the Benefits of SONET?
10. SDH Reference
11. SONET Reference Materials
Self-Test
Glossary
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Self-Test
1. Two digital signals whose transitions occur at almost the same rate are ___________.
a. asynchronous
b. synchronous
c. plesiochronous
2. SONET systems are __________ technology.
a. twisted-pair, copper-based
b. fiber-optic
c. wireless
3. SONET's base signal (STS–1) operates at a bit rate of __________.
a. 64 kbps
b. 1.544 Mbps
c. 51.840 Mbps
d. 155.520 Mbps
4. N in the expression STS–N indicates the __________.
a. generation of the STS architecture
b. the integer multiple of the base transmission rate
5. Line overhead contains __________ bytes of information.
a. 18
b. 9
c. 4
6. Jitter __________ long-term variations in a waveform.
a. is
b. is not
7. The low-speed tributaries which make up a multiplexed SONET signal __________ individually accessible.
a.are
b. are not
8. SONET __________ multivendor compatibility.
a. enables
b. cannot enable
9. Which of following are not basic SONET network elements?
a. switch interface
b. digital loop carrier
c. service control point
d. add/drop multiplexer
10. __________ stuffing is used when the frame rate of the SPE is too slow in relation to the rate of the STS–1.
a. Positive
b. Negative
Glossary >>

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