# Cellular Concepts MCQ

## Cellular Concepts MCQ

Cellular Concepts MCQ, Multiple Choice Questions on Cellular Concepts, MCQ on Cellular Concept, Mobile Communication Objective Questions, Mobile Communication MCQ, Engineering MCQ,

### Objective Type Questions

Q.1.  The following are the elements of the cellular mobile radio system.

• Mobile unit and control unit
• C/I reduction factor and cell splitting

Answer: C/I reduction factor and cell splitting

Q.2. If the average calling time is T and maximum calls in one hour in one cell is Qi then the offered load will be,

• Qi2T
• QiT/60
• QiT2
• QiT/30

Q.3. The concept of repeating the same frequency is known as …………….. and the cells using the same frequencies are known as …………………..

• Frequency reuse, adjacent channels cells
• Frequency reuse, co-channel cells
• Cell sectoring cells

Q.4. If ‘D’ is the distance between two co-channel cells and ‘R’ is the cell radius then D/R is known as

• Adjacent channel interference reduction factor
• Co-channel interference reduction factor
• Adjacent and co-channel interference reduction factor
• None of the above

Q.5. If N is the reuse pattern and R is the radius of a cell, then, frequency reuse distance (D) is given as

• $D=3NR$
• $D=3N^{2}\sqrt{R}$
• $D=3NR^{2}$
• $D=(\sqrt{3N})R$

Answer: $D=(\sqrt{3N})R$

Q.6. For N = 4 and N = 19 reuse cellular patterns, the frequency reuse distance are ……… and ……..

• 3.46 R and 4.6 R
• 3.46 R and 6 R
• 6 R and 7.55 R
• 3.46 R and 7.55 R

Answer: 3.46 R and 7.55 R

Q.7. In an N cell reuse pattern, the equation of N is,

• N = (i + j)2
• N = i2 + ij + j2
• N = i + j + 2j
• N = j + 2i

Answer: N = i2 + ij + j2

Q.8. For N = 7 reuse pattern, the co-channel interference reduction factor q is ……..

• D/R = 5.6
• D/R = 7.6
• D/R = 6
• D/R = 4.6

Q.9. When the mobile moves from the original cell to a new cell and the call in progress has to be continued smoothly. It is known as,

• Cell sectoring
• Handoff technique
• Desectorization
• Coverage

Q.10. The cell splitting is done as per traffic demand available in the cell is known as,

• Permanent cell splitting
• Dynamic cell splitting
• Semi-permanent splitting
• Static cell splitting

Q.11. In general, after cell splitting technique new cell radius is

Q.12. MTSO does the following functions

• Performs all internal switching of the calls
• Does not perform internal switching
• Autonomously locates mobile
• Manages data communication

Answer: Performs all internal switching of the calls

Q.13. In cellular system antennas, the front-to-back ratio of directional antenna is ……………….. in free space and ………… in cell site.

• 30 dB, 12 dB
• 20 dB, 10 dB
• 10 dB, 15 dB
• 40 dB, 30 dB

Q.14. Interference in neighboring cells is reduced by ……………….

• Antenna tilting
• Impedance
• Antenna height

Q.15. The capacity of the switching system in the cellular system is based on the following.

• Number of switch ports
• Battery condition
• Reducing switch ports
• Processor capacity

Q.16. The service life of switching equipment is not determined by,

• How long it takes to attain its full capacity
• Temperature
• Life cycle of equipment
• None of the above

Q.17. To increase the capacity of the equipment in case of designing switching equipment as modules is

• Modules distribution
• Modules can be reduced
• More modules can be added
• Modules need not altered

Q.18. Data line …………………..

• Cannot carry multiple channel data
• Can carry multiple cannel data
• Is not affected by cellular system
• Is affected by cellular system

Answer: Can carry multiple cannel data

Q.19. The macro and microcells are available in,

• Handoff
• Cell sectorization
• Co-channel cellular region
• Umbrella cell pattern

Q.20. Consider there are 5 cell sites C1 to C5. A user enters from 1 cell site to another cell with 4 rain. If all the cells are of equal distance at 12 min from stating point in which cell the user will be?

• In C4
• At boundary of C3
• In C5
• In C2

Q.21. The cell using different carrier frequencies in a cluster is

• Co-channel cell
• Macro cell
• Micro cell

Q.22. If the cluster size N = 19 then the shift parameters (i, j) are

• 2, 3
• 1, 3
• 3, 3
• 3, 2

Q.23. If the average calling time is T and maximum calls in one hour in one cell is Q then the offered load (A) in erlangs will be,

• A = Q2T/360
• A = QT/60
• A = QT2/30
• A = QT/120

Q.24. In Q.23, if Q is 4000, T is 1.76 min, the offered load will be ……………

• 119
• 117
• 216
• 115