This is the Multiple Choice Questions in Chapter 25: Fiber-Optic Systems from the book Electronic Communication Systems by Roy Blake
See also: MCQ in Electronic Communication Systems by George Kennedy
Start Practice Exam Test Questions
Choose the letter of the best answer in each questions.
MULTIPLE CHOICE
1. FDDI stands for:
a. Fiber Digital Data Interface
b. Fiber Distributed Data Interface
c. Fiber Distribution Delay Interface
d. Frequency-Division Data Interface
Answer: Option B
Solution:
2. FITL stands for:
a. Fiber In The Loop
b. Fiber Input Timing Loss
c. Frequency Input to The Loop
d. Fiber Input Timing Loop
Answer: Option A
Solution:
3. FTTC stands for:
a. Fiber Transmission Timing Constraint
b. Fiber Transmission Technology Committee
c. Fiber Telephone Transmission Cable
d. Fiber To The Curb
Answer: Option D
Solution:
4. SONET stands for:
a. Simple Optical Network
b. Standard Optical Network
c. Synchronous Optical Network
d. none of the above
Answer: Option C
Solution:
5. DWDM stands for:
a. Digital Wavelength-Division Modulation
b. Dense Wavelength-Division Modulation
c. Double Wavelength-Division Modulation
d. Dense Wavelength-Division Multiplexing
Answer: Option D
Solution:
6. A Soliton is a:
a. defect in the glass
b. type of particle
c. type of pulse
d. type of optical network
Answer: Option C
Solution:
7. Adding bits to synchronize one digital signal to another is called:
a. bit stuffing
b. bit-synch
c. SDH
d. WDM
Answer: Option A
Solution:
8. Power above the minimum required by an optical receiver is called:
a. gain margin
b. system margin
c. excess gain
d. overdrive
Answer: Option B
Solution:
9. Typically, repeaters are not required for fiber-optic cable lengths up to:
a. 1000 miles
b. 100 miles
c. 100 km
d. 10 km
Answer: Option C
Solution:
10. In SONET, OC-1 stands for:
a. Optical Carrier level one
b. Optical Coupler unidirectional
c. Optical Channel one
d. Optical Cable type 1
Answer: Option A
Solution:
11. In SONET, STS stands for:
a. Synchronous Transport Signal
b. Synchronous Transport System
c. Synchronous Transmission Signal
d. Synchronous Transmission System
Answer: Option A
Solution:
12. A commonly used fiber-based system for LANs is:
a. FDDI
b. high-speed Ethernet
c. gigabit Ethernet
d. all of the above
Answer: Option D
Solution:
13. The use of solitons on fiber-optic cables is:
a. common
b. experimental
c. obsolete
d. not possible
Answer: Option B
Solution:
14. OTDR stands for:
a. Optical Time-Delay Response
b. Optical Timing Delay Requirement
c. Optical Time-Domain Reflectometer
d. Optical Time-Division Relay
Answer: Option C
Solution:
15. Using fiber-optic cable in a telephone system except for the connection to the subscriber’s phone is called:
a. FDDI
b. FTTC
c. FITL
d. SONET
Answer: Option B
Solution:
COMPLETION
1. FTTC stands for Fiber To The ____________________.
Answer: Curb
Solution:
2. FITL stands for Fiber In The ____________________.
Answer: Loop
Solution:
3. SDH stands for Synchronous Data ____________________.
Answer: Hierarchy
Solution:
4. WDM stands for ____________________-division multiplexing.
Answer: Wavelength
Solution:
5. SONET stands for ____________________ Optical Network.
Answer: Synchronous
Solution:
6. FDDI stands for Fiber ____________________ Data Interface.
Answer: Distributed
Solution:
7. Optical amplifiers use ____________________-doped glass.
Answer: erbium
Solution:
8. Optical amplifiers use a ____________________ laser.
Answer: pump
Solution:
9. Dense ____________________ allows many different wavelengths of light to share a cable.
Answer: WDM
Solution:
10. The OC-1 line rate is ____________________ Mbps.
Answer: 51.84
Solution:
11. SONET does not use bit ____________________ to synchronize two digital signals.
Answer: stuffing
Solution:
12. SONET uses a ____________________ to denote the starting position of an information frame.
Answer: pointer
Solution:
13. FDDI systems use two ____________________ rings to carry signals.
Answer: token
Solution:
14. The two rings of an FDDI system carry data in ____________________ directions.
Answer: opposite
Solution:
15. Each ____________________ in an FDDI system acts as a regenerative repeater.
Answer: node
Solution:
16. FDDI uses ____________________ mode cables.
Answer: multi
Solution:
17. The data rate of an FDDI system is ____________________ bps.
Answer: 100 M
Solution:
18. SONET frames have considerably more ____________________ than do DS frames for information about signal routing and setup.
Answer: overhead
Solution:
19. The number of bytes in a SONET frame is ____________________.
Answer: 810
Solution:
20. The number of bytes in the payload of a SONET frame is ____________________.
Answer: 774
Solution:
21. The number of rows in a SONET frame is ____________________.
Answer: 9
Solution:
22. The total number of overhead bytes in a SONET frame row is ____________________.
Answer: 4
Solution:
23. The number of path overhead bytes in a SONET frame row is ____________________.
Answer: 1
Solution:
24. SONET frame rows contain path overhead and ____________________ overhead.
Answer: transport
Solution:
25. In SONET, SPE stands for synchronous payload ____________________.
Answer: envelope
Solution:
SHORT ANSWER
1. What is the bandwidth of a first-order LPF with a rise time of 350 nanoseconds?
Answer: 1 MHz
Solution:
2. Calculate the total rise time for a fiber-optic system if the transmitter, receiver, and cable each have a rise time of 50 nanoseconds.
Answer: 86.6 nanoseconds
Solution:
Complete List of MCQ in Electronic Communication Systems by Blake
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