This is the Multiple Choice Questions in Chapter 21: Cellular Radio 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. AMPS stand for:
a. American Mobile Phone System
b. Analog Mobile Phone Service
c. Advanced Mobile Phone System
d. Advanced Mobile Phone Service
Answer: Option D
Solution:
2. PCS stands for:
a. Personal Communications Service
b. Personal Communications Systems
c. Personal Cell phone Service
d. Portable Communications Systems
Answer: Option B
Solution:
3. RCC stands for:
a. Radio Common Carrier
b. Radio Cellular Carrier
c. Regional Cellular Carrier
d. none of the above
Answer: Option A
Solution:
4. MSC stands for:
a. Mobile Switching Center
b. Mobile Service Cellular
c. Maximum Signal Carrier
d. Minimum Signal Carrier
Answer: Option A
Solution:
5. MTSO stands for:
a. Minimum Transmitted Signal Output
b. Maximum Transmitted Signal Output
c. Mobile Telephone Switching Office
d. Mobile Transmission Time-Out
Answer: Option C
Solution:
6. MIN stands for:
a. Manual Identification Number
b. Mobile Identification Number
c. Maximum In-band Noise
d. Minimum In-band Noise
Answer: Option B
Solution:
7. NAM stands for:
a. Numerical Access Mode
b. Numerical Assignment Mode
c. Number Access Module
d. Number Assignment Module
Answer: Option D
Solution:
8. ESN stands for:
a. Electronic Serial Number
b. Emitted Signal Number
c. Emission Strength Number
d. none of the above
Answer: Option A
Solution:
9. SCM stands for:
a. Service Class Mark
b. Station Class Mark
c. Signal Class Mark
d. Serial-Code Mode
Answer: Option B
Solution:
10. SCM identifies the:
a. code number of a cell phone
b. base-station class
c. signal classification (analog or digital)
d. maximum power level of a cell phone
Answer: Option D
Solution:
11. SID stands for:
a. Sequential Interrupt Demand
b. Standard Identification Number
c. System Identification Number
d. Signal Intensity Descriptor
Answer: Option C
Solution:
12. The SID is used by a cell phone to:
a. identify the type of system (analog or digital)
b. recognize an AMPS system
c. set its transmitted power level
d. recognize that it is “roaming”
Answer: Option D
Solution:
13. DCC stands for:
a. Digital Color Code
b. Digital Communications Code
c. Digital Communications Carrier
d. Direct Channel Code
Answer: Option A
Solution:
14. SAT stands for:
a. Station Antenna Tower
b. Supervisory Audio Tone
c. Supervisory Access Tone
d. none of the above
Answer: Option B
Solution:
15. CMAC stands for:
a. Control Mobile Attenuation Code
b. Control Mobile Access Code
c. Central Mobile Access Control
d. Carrier Mode Attenuation Control
Answer: Option A
Solution:
16. The CMAC is used to:
a. control access to the cell site
b. set the access code of the cell phone
c. set the transmit power of the cell phone
d. select the transmit channel for the cell phone
Answer: Option C
Solution:
17. In an AMPS system, voice is sent using:
a. AM
b. FM
c. FSK
d. CDMA
Answer: Option B
Solution:
18. In an AMPS system, control-channel signals are sent using:
a. AM
b. FM
c. FSK
d. CDMA
Answer: Option C
Solution:
19. The ERP of a typical handheld AMPS cell phone is:
a. less than 600 µW.
b. less than 600 mW.
c. between 1 and 2 watts
d. 4 watts
Answer: Option B
Solution:
20. BSC stands for:
a. Base Station Controller
b. Base Signal Controller
c. Basic Service Contract
d. Basic Service Code
Answer: Option A
Solution:
21. The combination of the mobile cell phone and the cell site radio equipment is called the:
a. BSC
b. MTSO
c. RF interface
d. air interface
Answer: Option D
Solution:
22. The optimum cell-site radius is:
a. 2 km
b. 0.5 km
c. as small as possible
d. none of the above
Answer: Option D
Solution:
23. Phone traffic is measured in:
a. calls
b. erlangs
c. number of users
d. number of blocked calls
Answer: Option B
Solution:
24. One way to increase the capacity of a cell phone system is:
a. increase the number of cells
b. decrease the number of cells
c. increase the ERP
d. decrease the ERP
Answer: Option A
Solution:
25. CDPD stands for:
a. Code-Division Packet Data
b. Cellular Digital Packet Data
c. Coded Digital Packet Data
d. Cellular Digital Pulse Data
Answer: Option B
Solution:
COMPLETION
1. AMPS uses the ____________________-MHz band.
Answer: 800
Solution:
2. ____________________ is still the most common cellular phone system in North America.
Answer: AMPS
Solution:
3. Frequency ____________________ is what makes cellular phone systems complex.
Answer: reuse
Solution:
4. A ____________________ occurs when an in-use cell-phone moves from one cell site to another.
Answer: handoff
Solution:
5. If a cell-site radius drops below ____________________ km, handoffs will occur too frequently.
Answer: 0.5
Solution:
6. The number of ERP classes in AMPS is ____________________.
Answer: three
Solution:
7. A cell phone permanently installed in a car would be ERP class ____________________.
Answer:
I
one
Solution:
8. The maximum ERP of class III cell phones is ____________________.
Answer: 600 mW
Solution:
9. A portable, handheld cell phone would be ERP class ____________________.
Answer:
III
three
Solution:
10. Mobile transmitter power is controlled by the ____________________.
Answer: land station
Solution:
11. A MAC is a mobile ____________________ code.
Answer: attenuation
Solution:
12. For security, you should always assume that AMPS transmissions are ____________________.
Answer: public
Solution:
13. A mobile switching center is also called an ____________________.
Answer: MTSO
Solution:
14. The optimum size of a cell site depends on the amount of ____________________.
Answer: traffic
Solution:
15. Telephone call traffic is measured in ____________________.
Answer: erlangs
Solution:
16. A cell phone moving into a site with no available frequencies will have a ____________________ call.
Answer: dropped
Solution:
17. The reduction in cell size to increase traffic is called cell ____________________.
Answer: splitting
Solution:
18. A ____________________ site is a very small unit that can mount on a streetlight pole.
Answer: microcell
Solution:
19. Very small cells called ____________________ are used for reliable indoor reception.
Answer: picocells
Solution:
20. Compared with AMPS, digital cellular phones require ____________________ bandwidth.
Answer: less
Solution:
SHORT ANSWER
1. Give two reasons why digital cell phone systems are more secure than analog cell phone systems.
Answer:
1. Digital is inherently more secure because of its format.
2. Digitized voice signals are easily encrypted.
Solution:
2. If a 28.8-kbps modem is being used over a cell phone, how many words of text would be lost during a 100-msec handoff interruption assuming 10 bits per letter and 5 letters per word?
Answer: 57.6
Solution:
3. A certain cell site contains 200 cell phones. The probability that a given cell phone is being used is 15%. What is the traffic in erlangs?
Answer: 30
Solution:
4. What is “trunking gain”?
Answer: For a given probability of being blocked, the maximum allowable traffic per channel increases as the number of channels increases.
Solution:
Complete List of MCQs in Electronic Communication Systems by Blake
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