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Wireless Mobile Communication Interview

jbigdeal Staff asked 4 years ago

Wireless Mobile Communication Interview Questions Answers – Technical

IT - Wireless Mobile Communication

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Question 1
MTSO stands for ---------------------
A
Mobile Tower Server Office
B
Mobile Telephone Server office
C
Mobile Telephone Switching Office
D
None of the above
Question 2
A Small divisions of a given geographical area is Known as ---------------
A
Shell
B
Cell
C
core
D
Kernel
Question 3
Transceiver is a combination of -------------- and -------.
A
Transmitter and receiver
B
Cell and Mobile unit
C
Cell and MTSO
D
Transmitter and cell
Question 4
___________ is a subscriber module which stores all the subscriber related information
A
ME
B
SIM
C
MS
D
BSS
Question 5
__________ is the process of converting plaintext into ciphertext.
A
Authentication
B
Decryption
C
Compression
D
Encryption
Question 6
_________and ______________ are the administration tasks of the Network Management.
A
Traffic control , synchronization
B
congestion control , flow control
C
Subscriber management, Billing
D
Traffic control, minimizing error
Question 7
CDPD stands for__________________
A
Cellular Digital Packet Data
B
Cordless Device Packet Data
C
Cellular device Personal Data
D
Cordless Digital personal device
Question 8
__________ was the first Time division Duplexing system for mobile radio communication.
A
CT-2
B
NFL
C
FSL
D
TCH/H
Question 9
______________is a packet switching system which uses idle voice channel from the cellular system band to carry out traffic.
A
DSM
B
CDPD
C
CT-2
D
TDMA
Question 10
In __________ frequency spectrum is divided into smaller spectra and is allocated to each user.
A
FDMA
B
TDMA
C
CDMA
D
SDMA
Question 11
CDMA uses the idea of tolerating interference by __________
A
intelligent modulation
B
Spread spectrum modulation
C
manchester coding
D
Bipolar non return to zero coding
Question 12
In FDMA---------------- is asigned between the spectrum of two adjacent users.
A
interferance band
B
co-infer band
C
Guard band
D
inference band
Question 13
_______________ are geographical divisions of a given area which are considerably small compared to conventional cells.
A
Microcells
B
Minicells
C
Corecells
D
Biocells
Question 14
Reducing the cell size to increase capacity is called as -----------
A
intelligent cell approach
B
Microcell approach
C
Top down approach
D
bottom up approach
Question 15
Odyssey personal communications satellite system developed by TRW belongs to ------------satellites.
A
LEO
B
ISO
C
MEO
D
CISCO
Question 16
FDMA is used mainly for ----------------------- transmission
A
digital
B
analog
C
both analog and digital
D
neither A) nor B)
Question 17
TDMA stands for ------------------------
A
Time data mobile access
B
Total disk multiple access
C
Time division multiple Access
D
Total data mainly access
Question 18
Cell phones use two main battery technologies ------------- and --------------.
A
NiMH , Hi-LAY
B
Li-ion , Jin-Law
C
NiMH, Li-ion
D
Hi-Lay, Pi-Lay
Question 19
An antenna which attempts to direct all its energy in a particular direction is called as a ---------------------.
A
star antenna
B
Horn antenna
C
Disc antenna
D
Directional antenna
Question 20
The multiple access scheme in MIRS is ---------------------
A
FDMA
B
TDMA
C
CDMA
D
WDMA
Question 21
There are ten users each occupying a bandwidth of 4 KHZ. If a guard band of 1 KHZ is to be assigned, determine the total bandwidth of these ten users?
A
49 KHZ
B
52 KHZ
C
100 KHZ
D
230 KHZ
Question 22
Suppose each user in a cellular communication system is allocated 30 KHz of bandwidth. If the total band of frequencies allocated per cell is 40 MHz, determine the total number of users within that cell who can communicate simultaneously.
A
556 (approximately)
B
660 ( approximately)
C
666 (approximately)
D
766 (approximately)
Question 23
Three kinds of Physical channels are ------------------------
A
TCH/F, TCH/H, TCH/8
B
TCH/L, TCH/H, TCH/16
C
TCH/F, TCH/L, TCH/2
D
TCH/I, TCH/L, TCH/8
Question 24
The stand Alone dedicated control channel uses ------------------channel for passing user information.
A
TCH/F
B
TCH/H
C
TCH/L
D
TCH/8
Question 25
Followings are the characteristics of PCN system. i. Covers both small cells and large cells DHCPNACK ii. Call delivery iii. Portable hand set iv. user intelligent network
A
I and iii only
B
ii, iii and iv only
C
i, ii, iii and iv
D
i and iv only
Question 26
Digital European Cordless Telecommunication system uses ------------- type of modulation
A
GFSK
B
PCM
C
PWM
D
FSK
Question 27
What is the up link and down link frequency of GSM?
A
Up link 935-960 MHz and Down link 890-915 MHz
B
Up link 900-950 and Down link 850-890 MHz
C
Up link 600-660 MHz and Down Link 550-590 MHz
D
Up link 650-710 MHz and Down Link 540-590 MHz
Question 28
NA-TDMA system is approved and designed in 1987 by a group named -----------------.
A
TR35-6
B
TR53-8
C
TR45-3
D
TR54-8
Question 29
Stationary satellites are at an altitude of ----------------------- above the earth.
A
30,000 KM
B
38,000 KM
C
34,500 KM
D
36,800 KM
Question 30
In future Dialing process can be replaced by -----------------------
A
Artificial intelligence
B
Voice activated technology
C
Idle voice channel
D
None of these
Question 31
_____________ phones allows the phone to utilize either a digital signal or if necessary an analog signal.
A
Duplex -mode
B
Bio-mode
C
Real-mode
D
Dual-mode
Question 32
State true or false i. The effective antenna height changes when the location of the mobile unit changes ii. The absorption of radio waves by leaves of trees and other vegetation does not cause Foliage loss. iii. The cell sites acts as an interface between the mobile unit and the MTSO.
A
true, true, false
B
true, false, true
C
false, true, true
D
false, true, false
Question 33
State true or false i. Handover does not occur when a voice channel changes as the mobile station enters another cell during a call ii. Because of the precious value of the radio spectrum individual user cannot have their own TCH at all time. iii. There are five kinds of physical channels.
A
true, true, true
B
false, false, false
C
true, false, true
D
false, true, false
Question 34
Match the following I. PDC 1. 1989 II. PCN 2. Packet switching stem III. PCS 3.1988 IV. CDPD 4. 1994
A
I- 4 II-3 III-1 IV-2
B
I-3 II-4 III-2 IV-1
C
I-2 II-1 III-4 IV-3
D
1-4 II-2 III-1 IV- 3
Question 35
Match the following I. FDMA 1. pseudo-noise sequence II. CDMA 2. Guard Band III. TDMA 3.ADC IV. NA-TDMA 4. Time slots
A
I- 4 II-3 III-1 IV-2
B
I-3 II-4 III-2 IV-1
C
I-2 II-1 III-4 IV-3
D
1-4 II-2 III-1 IV- 3
Question 36
State True or False i. Handoffs between satellite antenna spot beams and satellite may create for switching signals in space. ii. Size of the battery is the limiting factor for long radio path communication. iii. The existing PCs system in Indian markets are the smallest possible PCS system.
A
False, False, True
B
True, False, False
C
True, True, False
D
True, True, True
Question 37
State true or false i. CDMA technology is the basis for Interim Standard 95 and operates in both the 800 MHz and 1900MHz frequency bands. ii. A phone that does not has dual band capability can switch frequencies iii. Analog cell phones does not suffer from a problem known as cloning.
A
true, false, false
B
false, false, false
C
true, false, true
D
false, true, false
Question 38
List down the tasks of OSS in a Digital Cellular system. i. Network operation and maintenance. ii. Synchronization iii. Subscription management , including charging and billing iv. Congestion control. v. Mobile equipment management
A
i, ii, and iii only
B
ii, iii, and v only
C
ii and v only
D
i, iii and v only
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