N-GEN Communications Web-based Seminars ©NGCS

Seminar - An Overview of Communications Technologies

Module 5 - SONET, WDM, DWDM and B-ISDN Technologies                                                              Slide 74 of 76 _________________                                                                                  __________

Quiz for Module 5

1. Which of the following material is used to make the optical fiber?

    a. Copper

    b. Aluminum

    c. Silicon

    d. Barium 

2. True or false:

    a. A single-mode optical fiber is preferred to a multimode optical fiber for high speed data
       transmission

    b. A cladding on the optical fiber does not help to keep a light wave within the core fiber

    c. Impurities are added to silicon to produce a cladding on the pure silicon core

    d. All light wavelengths travel at the same distance in a single mode fiber

3. SONET standard is designed for which of the following medium:

    a. Twisted pair, copper-based 

    b. TV cable

    c. Fiber-optics

    d. Wireless

4. The SONET base rate signal (STS-1) operates at a bit rate of:

    a. 64 K bps

    b. 1.544 M bps

    c. 51.850 M bps

    d. 155.520 M bps

5. Which of the following are not basic SONET network elements?

    a. Switch interface

    b. Add / Drop multiplexer

    c. Service control point

    d. Optical signal

6. True or false:

    a. SONET standard is independent of the services it is intended to carry

    b. Frame Relay, ATM, IP, SMDS traffic can be transported on a SONET network 

    c. SONET rings support

    d. FDDI standard supports SONET functions

7. Which of the following factors have made SONET standard successful:

    a. Capable of transporting data at a very high speed

    b. Capable of supporting network OAMP functions 

    c. Being a universal standard

    d. All of the above

8. B-ISDN :

    a. Supports ATM services

    b. Uses SONET in the network   

    c. Supports HDTV transmission

    d. Is widely used in Australia, U.S.A. and Europe

9. A Wave Division Multiplexing technology:

    a. Allows multiple light wavelengths to travel in a fiber

    b. Is different than DWDM 

    c. Can be used in a wireless network

    d. is capable of increasing fiber transmission capability to tera bps

10. An optical network of the future will consist of:

    a. Long-haul optical transmission lines owned by carriers

    b. Optical Metropolitan Area Networks

    c. Access networks connecting enterprises and residents to OMAN

    d. IP protocol

_________________                                                                                  __________

     Please complete the quiz for Module 5 without going back and forward on the Module 5 slides.

    Once completed then go to the next slide, slide 75, to check the answers to the Module 5 quiz.