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WorksheetsFSDFSD
Total questions: 76
Worksheet time: 1hrs 16mins
Name
Class
Date
1.
Which multiple access technique is primarily used in CDMA networks?
a)
OFDMA
b)
CDMA
c)
TDMA
d)
OFDMA
2.
What is the main advantage of microcell deployment in cellular systems?
a)
Reduced handoffs
b)
Easier mobility management
c)
Lower equipment cost
d)
Reduced handoffs
3.
Which component manages location updates for roaming subscribers?
a)
Mobile Switching Center
b)
Mobile Station
c)
Home Location Register
d)
Mobile Switching Center
4.
What is the primary function of the Visitor Location Register (VLR)?
a)
Handle encryption
b)
Manage handoff decisions
c)
Allocate frequency channels
d)
Handle encryption
5.
What is the impact of co-channel interference in cellular networks?
a)
Reduced network load
b)
Faster handoff
c)
Better coverage
d)
Reduced network load
6.
Which handoff type occurs when a mobile moves within the same MSC area?
a)
Frequency Handoff
b)
Intra-MSC Handoff
c)
Roaming Handoff
d)
Frequency Handoff
7.
Which of the following is NOT part of the Base Station Subsystem?
a)
All are part
b)
Base Station Controller
c)
Mobile Switching Center
d)
All are part
8.
In mobile networks, the “control channel” is used for:
a)
Reducing interference
b)
Signaling and coordination
c)
Handoff between cells
d)
Reducing interference
9.
Which cellular generation introduced packet-switched data networks?
a)
4G
b)
2G
c)
3G
d)
4G
10.
In GSM, the subscriber identity is stored on which card?
a)
HLR
b)
VLR
c)
SIM
d)
MSC
11.
What does SIR stand for in cellular communications?
a)
System Integrity Rate
b)
Signal Interference Rate
c)
Signal-to-Interference Ratio
d)
Subscriber Interference Rate
12.
Roaming across different PLMNs requires coordination between:
a)
Mobile Stations only
b)
MSCs and HLRs
c)
Base Stations only
d)
Access Points
13.
Which layer of the protocol stack provides reliable data transfer?
a)
Physical Layer
b)
Transport Layer
c)
Network Layer
d)
Data Link Layer
14.
What is the key challenge addressed by frequency reuse?
a)
Improving handoff
b)
Increasing call drops
c)
Minimizing co-channel interference
d)
Reducing roaming
15.
Which type of cell is typically used in dense urban areas?
a)
Picocell
b)
Microcell
c)
Macrocell
d)
Femtocell
16.
In cellular systems, handoff is typically initiated based on:
a)
Frequency allocation
b)
Signal strength measurements
c)
Subscriber request
d)
Base station type
17.
Which of the following describes an exposed node problem?
a)
Node loses connection during handoff
b)
Node interferes with distant nodes
c)
Node unable to transmit due to nearby transmission
d)
Node experiences packet loss
18.
Which of the following is NOT a performance metric for cellular systems?
a)
Hand-off latency
b)
SIR
c)
Call drop rate
d)
IP address format
19.
Which of the following components performs switching of calls in mobile networks?
a)
Mobile Switching Center
b)
Base Transceiver Station
c)
Base Station Controller
d)
Mobile Station
20.
What is the main function of the Base Station Controller (BSC)?
a)
Store subscriber info
b)
Switch calls between MSCs
c)
Allocate radio channels and manage handoffs
d)
Route internet traffic
21.
In mobile networks, the network core is responsible for:
a)
Power control
b)
Switching, routing, and subscriber management
c)
Radio transmission
d)
Frequency hopping
22.
Which channel type carries voice or user data?
a)
Pilot Channel
b)
Control Channel
c)
Traffic Channel
d)
Paging Channel
23.
Frequency reuse distance is determined primarily by:
a)
Handoff latency
b)
Subscriber mobility
c)
Antenna height and power
d)
Network topology
24.
Which generation of mobile network first used digital voice transmission?
a)
3G
b)
2G
c)
1G
d)
4G
25.
Handoff can be categorized into how many main types?
a)
2
b)
3
c)
4
d)
5
26.
Which of the following improves spectral efficiency in cellular networks?
a)
Increasing cell size
b)
Frequency reuse
c)
Reducing handoffs
d)
Roaming
27.
In cellular systems, the term “cell breathing” is associated with:
a)
Power adjustment and coverage shrinkage in CDMA networks
b)
Handoff latency
c)
Roaming delay
d)
Subscriber authentication
28.
Which multiple access technique divides time into slots for each user?
a)
FDMA
b)
TDMA
c)
CDMA
d)
OFDMA
29.
What is the purpose of a paging channel in cellular networks?
a)
Transmit voice
b)
Locate and alert mobile stations
c)
Manage frequency reuse
d)
Measure interference
30.
Which network element authenticates a roaming subscriber?
a)
MSC
b)
VLR
c)
HLR
d)
BSC
31.
Which parameter measures signal quality and affects call drop probability?
a)
SIR
b)
Bandwidth
c)
Frequency reuse factor
d)
Channel spacing
32.
Which generation first introduced mobile internet services?
a)
2G
b)
3G
c)
4G
d)
5G
33.
Which component temporarily stores subscriber information while visiting a network?
a)
MSC
b)
VLR
c)
HLR
d)
BSC
34.
In cellular systems, a macrocell covers approximately:
a)
Few meters
b)
Several kilometers
c)
Hundreds of meters
d)
A single building
35.
Which of the following reduces interference between adjacent cells using the same frequency?
a)
Handoff
b)
Frequency reuse
c)
Roaming
d)
Channel hopping
36.
Which layer of GSM protocol stack handles error correction and detection?
a)
Physical Layer
b)
Data Link Layer
c)
Network Layer
d)
Transport Layer
37.
Which entity is responsible for managing handoff in CDMA networks?
a)
Base Station
b)
Base Station Controller
c)
Mobile Switching Center
d)
Mobile Station
38.
Which type of handoff is initiated when a mobile moves from one MSC area to another?
a)
Intra-MSC Handoff
b)
Inter-MSC Handoff
c)
Soft Handoff
d)
Hard Handoff
39.
Which of the following is a key criterion for cellular system performance?
a)
Subscriber name
b)
Call setup time
c)
Phone model
d)
SIM card type
40.
What is the function of the control channel in GSM?
a)
Carry voice data
b)
Handle signaling
c)
Reduce interference
d)
Increase coverage
41.
Which generation is primarily packet-switched with high data rates?
a)
2G
b)
3G
c)
4G
d)
1G
42.
In mobile networks, which is an example of core network element?
a)
Mobile Station
b)
Base Transceiver Station
c)
MSC
d)
SIM card
43.
Which cellular system problem is caused when two nodes outside range sense each other?
a)
Hidden node
b)
Exposed node
c)
Interference
d)
Roaming
44.
Which entity controls multiple BTS in a network?
a)
MSC
b)
BSC
c)
HLR
d)
VLR
45.
Which type of cell is the smallest in coverage area?
a)
Macrocell
b)
Microcell
c)
Picocell
d)
Femtocell
46.
Which layer ensures end-to-end reliability in mobile networks?
a)
Physical Layer
b)
Network Layer
c)
Transport Layer
d)
Data Link Layer
47.
Which network element is responsible for authentication of users?
a)
VLR
b)
HLR
c)
MSC
d)
BSC
48.
Which technique allows multiple users to share the same frequency band in CDMA?
a)
Frequency hopping
b)
Spread spectrum
c)
TDMA
d)
FDMA
49.
What is the main purpose of a traffic channel?
a)
Signaling
b)
Carry user data
c)
Handoff
d)
Frequency allocation
50.
Which of the following defines mobility management in mobile networks?
a)
Call routing
b)
Location tracking and handoff management
c)
Frequency allocation
d)
Signal modulation
51.
Which factor primarily affects handoff decisions?
a)
Signal strength
b)
Subscriber preference
c)
SIM card type
d)
Base station ID
52.
Which is the largest network entity managing multiple MSCs?
a)
PLMN
b)
BSC
c)
BTS
d)
VLR
53.
In GSM, which layer provides error detection and retransmission?
a)
Transport Layer
b)
Data Link Layer
c)
Physical Layer
d)
Network Layer
54.
Which of the following is a subscriber identity module?
a)
MSC
b)
SIM
c)
BSC
d)
HLR
55.
Roaming requires communication between:
a)
Home and Visitor networks
b)
Base stations only
c)
Mobile devices only
d)
BSC and BTS
56.
Which of the following measures cellular system capacity?
a)
SIR
b)
Number of simultaneous calls
c)
Call drop probability
d)
Roaming speed
57.
Which multiple access technique is used in LTE networks?
a)
TDMA
b)
FDMA
c)
OFDMA
d)
CDMA
58.
What is the main purpose of a base transceiver station (BTS)?
a)
Handle subscriber authentication
b)
Provide radio interface for mobile stations
c)
Switch calls between MSCs
d)
Allocate IP addresses
59.
Which layer of the mobile protocol stack is responsible for encryption and security?
a)
Network Layer
b)
Application Layer
c)
Data Link Layer
d)
Physical Layer
60.
Which problem occurs when a node defers transmission due to a neighbor transmitting, but the receiver is out of range?
a)
Hidden Node
b)
Exposed Node
c)
Co-channel Interference
d)
Roaming
61.
In GSM, what is the main function of the HLR?
a)
Store permanent subscriber info
b)
Manage temporary roaming info
c)
Allocate frequencies
d)
Control handoffs
62.
Which of the following reduces dropped calls during handoff?
a)
Proper handoff algorithm
b)
Larger cell size
c)
Frequency hopping
d)
Subscriber authentication
63.
What is a key feature of 5G networks?
a)
Only voice communication
b)
Ultra-low latency and high data rates
c)
Analog transmission
d)
Frequency reuse elimination
64.
Which entity coordinates multiple base station controllers?
a)
MSC
b)
VLR
c)
HLR
d)
PLMN
65.
Which cellular concept allows reuse of frequencies in non-adjacent cells?
a)
Roaming
b)
Frequency Reuse
c)
Handoff
d)
Signal hopping
66.
What is the purpose of a control channel in mobile networks?
a)
Carry voice/data
b)
Carry signaling and network commands
c)
Reduce cell size
d)
Store subscriber info
67.
Which factor primarily triggers handoff in cellular systems?
a)
Signal strength
b)
SIM card type
c)
Base station ID
d)
Frequency allocation
68.
In CDMA networks, “soft handoff” refers to:
a)
Dropping old connection before establishing new
b)
Maintaining multiple connections during transition
c)
Switching MSCs
d)
Adjusting frequency
69.
Which type of cell is smallest and typically deployed indoors?
a)
Macrocell
b)
Microcell
c)
Picocell
d)
Femtocell
70.
Which network component temporarily stores subscriber info while roaming?
a)
VLR
b)
HLR
c)
MSC
d)
BSC
71.
Which protocol layer provides end-to-end reliability?
a)
Physical Layer
b)
Network Layer
c)
Transport Layer
d)
Data Link Layer
72.
Which metric measures the signal quality in presence of interference?
a)
SIR
b)
BER
c)
RSSI
d)
Bandwidth
73.
Which generation first introduced packet-switched mobile data?
a)
2G
b)
3G
c)
4G
d)
1G
74.
Which type of handoff occurs between two different MSC areas?
a)
Intra-MSC Handoff
b)
Inter-MSC Handoff
c)
Soft Handoff
d)
Hard Handoff
75.
Which access method divides the available frequency band among multiple users?
a)
TDMA
b)
FDMA
c)
CDMA
d)
OFDMA
76.
What is the main function of the Mobile Switching Center (MSC)?
a)
Transmit signals to mobile stations
b)
Route calls and manage mobility
c)
Allocate frequencies
d)
Store subscriber SIM info
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