WorksheetsITA0312 - MOBILE COMPUTING TEST
Total questions: 147
Worksheet time: 2hrs 27mins
Name
Class
Date
1.
In a basic cellular system, if the total allocated spectrum is 40 MHz and each simplex channel requires 25 kHz, how many full-duplex channels can be allocated?
a)
400
b)
800
c)
1600
d)
320
2.
If a cellular network follows a 7-cell frequency reuse pattern and has a total of 600 available channels, how many channels are available per cell?
a)
85
b)
90
c)
100
d)
120
3.
A GSM system uses 200 kHz carrier spacing and each carrier supports 8 time slots. If 124 carriers are available, what is the total number of voice channels?
a)
992
b)
896
c)
1240
d)
620
4.
If a base station transmits at 50W and a mobile station at 2W, what is the power control factor in dB?
a)
15 dB
b)
20 dB
c)
25 dB
d)
10 dB
5.
The interference level in a cellular system is measured as -95 dBm. If the signal strength is -65 dBm, what is the Carrier-to-Interference Ratio (C/I) in dB?
a)
20 dB
b)
30 dB
c)
40 dB
d)
60 dB
6.
A cellular system operates with a frequency reuse factor of 7. If the total available bandwidth is 35 MHz and each channel requires 200 kHz, how many channels are available per cell?
a)
20
b)
25
c)
30
d)
35
7.
A base station transmits at a power of 40W. If the path loss exponent is 4 and the distance to the mobile station is doubled, what is the new received power?
a)
2.5W
b)
5W
c)
10W
d)
20W
8.
A mobile network operates with a cell radius of 1 km. If the system requires a minimum SNR of 20 dB and the received power follows an inverse square law, how much should the transmission power increase when the cell radius is doubled?
a)
2x
b)
4x
c)
8x
d)
16x
9.
A cellular system has a cluster size of 4. If each cell is assigned 12 voice channels, how many total channels are available in the system?
a)
24
b)
36
c)
48
d)
60
10.
A mobile user moves at 90 km/h in a cell with a base frequency of 900 MHz. What is the approximate Doppler shift experienced?
a)
50 Hz
b)
75 Hz
c)
100 Hz
d)
125 Hz
11.
A mobile system uses a time-division multiple access (TDMA) scheme with 8 slots per frame. If each frame lasts 4 ms, what is the duration of one time slot?
a)
0.25 ms
b)
0.5 ms
c)
1 ms
d)
2 ms
12.
A GSM system has a carrier spacing of 200 kHz. If the total allocated spectrum is 20 MHz, how many carrier frequencies can be assigned?
a)
50
b)
100
c)
150
d)
200
13.
A mobile station transmits at 5W and the path loss is 30 dB. What is the received power at the base station?
a)
0.5W
b)
0.05W
c)
0.005W
d)
0.0005W
14.
A cellular network operates at 1800 MHz. If the inter-cell distance is 2 km, what is the approximate free-space path loss assuming a reference distance of 1m?
a)
100 dB
b)
110 dB
c)
120 dB
d)
130 dB
15.
A mobile network supports a maximum of 200 simultaneous calls per cell. If a cell cluster consists of 5 cells, what is the total call capacity of the cluster?
a)
500
b)
750
c)
1000
d)
1200
16.
A network switching subsystem can handle 5000 call requests per second. If the average call duration is 2 minutes, how many active calls can the system support?
a)
5000
b)
6000
c)
10000
d)
12000
17.
A base station subsystem supports 100 channels and each channel has a bandwidth of 30 kHz. What is the total bandwidth allocated to the base station?
a)
2 MHz
b)
3 MHz
c)
4 MHz
d)
5 MHz
18.
A cellular network uses a guard band of 50 kHz between adjacent frequency allocations. If there are 25 frequency bands, what is the total bandwidth wasted in guard bands?
a)
1 MHz
b)
1.25 MHz
c)
1.5 MHz
d)
2 MHz
19.
A mobile network has a handoff delay of 300 ms and the vehicle moves at 72 km/h. If the cell radius is 1 km, how many handoffs will occur per hour?
a)
30
b)
36
c)
40
d)
50
20.
A mobile network uses a two-level hierarchy with 10 regional centers and each center controls 50 base stations. If each base station supports 200 users, how many users can the network handle?
a)
100000
b)
500000
c)
1 million
d)
2 million
21.
A mobile communication system uses a hexagonal cell structure with a cell radius of 500 meters. If the total coverage area is 500 square km, approximately how many cells are needed?
a)
1500
b)
1750
c)
2000
d)
2250
22.
A cellular system uses an FDMA scheme with 25 kHz per channel. If the total spectrum allocated is 5 MHz, how many channels are available?
a)
150
b)
175
c)
200
d)
225
23.
A mobile subscriber makes 5 calls per hour with an average call duration of 3 minutes. If the system has 1000 subscribers, what is the total call traffic in Erlangs?
a)
150
b)
200
c)
250
d)
300
24.
A cellular network operates in the 2.5 GHz band with a bandwidth of 50 MHz. If each user requires 500 kHz, what is the maximum number of users that can be supported simultaneously?
a)
5000
b)
7500
c)
10000
d)
12500
25.
A base station supports a maximum of 500 users per cell. If the network has 1000 cells, what is the total user capacity of the network?
a)
500000
b)
750000
c)
1 million
d)
1.5 million
26.
A GSM system uses a carrier spacing of 200 kHz and supports 8 time slots per carrier. If 124 carriers are available, what is the total number of voice channels?
a)
992
b)
896
c)
1240
d)
620
27.
In FDMA, if the total bandwidth allocated is 10 MHz and each channel requires 25 kHz, how many channels can be allocated?
a)
300
b)
400
c)
500
d)
600
28.
A CDMA system operates with a chip rate of 3.84 Mcps and a data rate of 9.6 kbps. What is the processing gain?
a)
250
b)
400
c)
384
d)
512
29.
In a TDMA system, if each frame is 4.615 ms long and has 8 time slots, what is the duration of each time slot?
a)
0.5 ms
b)
0.57 ms
c)
0.58 ms
d)
0.6 ms
30.
For an OFDMA system with a total bandwidth of 10 MHz and 512 subcarriers, what is the subcarrier spacing?
a)
15 kHz
b)
20 kHz
c)
25 kHz
d)
30 kHz
31.
A mobile app maintains a persistent connection with a server using a heartbeat signal every 2 seconds. If the network drops 5% of packets and the connection lasts for 1 hour, how many heartbeat signals are successfully transmitted?
a)
1782
b)
1710
c)
1719
d)
1800
32.
A multimedia framework processes 60 frames per second, with each frame taking 25 milliseconds to decode and 15 milliseconds to render. What is the total processing time for 1000 frames?
a)
40 sec
b)
50 sec
c)
60 sec
d)
70 sec
33.
An Android Service runs in the background consuming 15 MB of RAM per minute. If the device has 1 GB RAM and 80% is used by other applications, how long before the system kills the service due to memory constraints?
a)
12 min
b)
15 min
c)
18 min
d)
20 min
34.
A peer-to-peer mobile architecture has a latency of 200 ms per hop. If data needs to traverse 8 hops to reach its destination, what is the total transmission latency?
a)
1.4 sec
b)
1.6 sec
c)
1.8 sec
d)
2.0 sec
35.
A GSM network operates at 900 MHz with a channel bandwidth of 200 kHz. If the total allocated spectrum is 25 MHz, how many channels are available?
a)
100
b)
110
c)
120
d)
125
36.
A CDMA system has a processing gain of 128 and a data rate of 10 kbps. What is the bandwidth required?
a)
1.28 MHz
b)
2.56 MHz
c)
5.12 MHz
d)
10.24 MHz
37.
An OFDMA system operates with a total bandwidth of 20 MHz and subcarrier spacing of 15 kHz. How many subcarriers are available?
a)
1024
b)
1333
c)
1536
d)
1667
38.
A mobile network has a handoff delay of 200 ms and a vehicle moves at 90 km/h. If the cell radius is 500 meters, how many handoffs occur per hour?
a)
36
b)
40
c)
45
d)
50
39.
A GSM system supports 8 users per TDMA frame. If each user gets 0.577 ms per slot, what is the total frame duration?
a)
4.16 ms
b)
4.62 ms
c)
4.88 ms
d)
5.12 ms
40.
A 3G UMTS system operates at 2100 MHz with a bandwidth of 5 MHz. If each user requires 64 kbps, how many users can be supported?
a)
1000
b)
1200
c)
1400
d)
1600
41.
A 4G LTE system uses a 10 MHz bandwidth with 100 resource blocks. If each block consists of 12 subcarriers, how many subcarriers are available?
a)
1000
b)
1200
c)
1500
d)
1800
42.
A FDMA system has a total bandwidth of 30 MHz and each channel requires 25 kHz. How many channels can be allocated?
a)
1000
b)
1100
c)
1200
d)
1300
43.
A CDMA system has a spreading factor of 256. If the original data rate is 20 kbps, what is the spread data rate?
a)
2.56 Mbps
b)
4.12 Mbps
c)
5.12 Mbps
d)
6.56 Mbps
44.
A mobile system has a frequency reuse factor of 3 and operates with 60 MHz of bandwidth. If each channel requires 100 kHz, how many channels are available per cell?
a)
100
b)
120
c)
150
d)
180
45.
A 5G network operates at 3.5 GHz with a bandwidth of 100 MHz. If each user requires 500 kHz, how many users can be supported?
a)
100
b)
150
c)
200
d)
250
46.
A DECT system uses TDMA with 10 slots per frame. If a frame lasts 10 ms, what is the duration of each slot?
a)
0.5 ms
b)
1 ms
c)
2 ms
d)
5 ms
47.
A GSM radio interface uses GMSK modulation with a channel spacing of 200 kHz. If the total spectrum is 25 MHz, how many channels can be used?
a)
100
b)
110
c)
120
d)
125
48.
A mobile network has a base station power of 50W. If the path loss is 40 dB, what is the received power at the mobile station?
a)
0.5 W
b)
5 mW
c)
50 mW
d)
500 mW
49.
A UMTS system has a chip rate of 3.84 Mcps. If the processing gain is 128, what is the data rate?
a)
15 kbps
b)
30 kbps
c)
60 kbps
d)
120 kbps
50.
A 4G LTE cell covers an area of 2 km². If the total coverage area needed is 100 km², how many cells are required?
a)
25
b)
40
c)
50
d)
75
51.
In Mobile IP, if the home agent and foreign agent communicate via a tunnel with an overhead of 20 bytes per packet, what is the additional overhead for a 500-byte data packet?
a)
20
b)
40
c)
60
d)
80
52.
A wireless network operates with a bandwidth of 20 MHz and uses 64-QAM modulation. If each symbol carries 6 bits, what is the maximum theoretical data rate?
a)
120 Mbps
b)
144 Mbps
c)
216 Mbps
d)
300 Mbps
53.
A proactive routing protocol maintains a routing table with 50 entries, each requiring 32 bytes. What is the total memory required for the table?
a)
1024
b)
1600
c)
3200
d)
6400
54.
A mobile node in an ad-hoc network moves at 10 m/s. If the network updates routing information every 2 seconds, what is the total distance traveled between updates?
a)
10
b)
20
c)
30
d)
40
55.
In DSR (Dynamic Source Routing), if a route discovery packet traverses 5 intermediate nodes before reaching the destination, how many total route request packets are generated?
a)
5
b)
6
c)
7
d)
8
56.
A mobile IP network uses a subnet mask of 255.255.255.240. How many mobile nodes can be assigned IP addresses in one subnet?
a)
8
b)
14
c)
16
d)
30
57.
A wireless network operates at 2.4 GHz with a channel bandwidth of 20 MHz. If the symbol rate is 1 Msps, what is the spectral efficiency?
a)
1 bps/Hz
b)
2 bps/Hz
c)
4 bps/Hz
d)
6 bps/Hz
58.
An ad-hoc network has 50 nodes, each with a transmission range of 250 meters. If the area is 1 km², what is the approximate network density?
a)
10 nodes/km²
b)
20 nodes/km²
c)
50 nodes/km²
d)
100 nodes/km²
59.
A mobile node moves at 30 m/s in a 900 MHz network. What is the Doppler shift experienced?
a)
30 Hz
b)
60 Hz
c)
90 Hz
d)
120 Hz
60.
A wireless LAN operates at 54 Mbps with a packet size of 1500 bytes. What is the transmission time per packet?
a)
0.2 ms
b)
0.22 ms
c)
0.25 ms
d)
0.28 ms
61.
A proactive routing protocol updates its routing table every 10 seconds. If the network has 100 nodes, how many updates occur per minute?
a)
100
b)
500
c)
600
d)
1000
62.
An ad-hoc network uses AODV routing. If a node initiates a route request every 5 seconds and the network lifetime is 5000 seconds, how many route requests are generated?
a)
500
b)
750
c)
1000
d)
1500
63.
A mobile IP system has a home agent with a capacity of 1000 bindings. If each mobile node requires 50 bytes of storage, what is the total memory required?
a)
50 KB
b)
100 KB
c)
150 KB
d)
200 KB
64.
A wireless network uses DSSS with a chip rate of 11 Mcps and a data rate of 1 Mbps. What is the processing gain?
a)
8
b)
10
c)
11
d)
12
65.
A MANET operates with a transmission range of 300 meters. If two nodes are 600 meters apart, how many intermediate nodes are required for connectivity?
a)
1
b)
2
c)
3
d)
4
66.
A mobile node using mobile IP moves every 2 minutes. If the session duration is 30 minutes, how many handoffs occur?
a)
10
b)
12
c)
15
d)
18
67.
A wireless ad-hoc network has a node density of 40 nodes/km². If the total area covered is 5 km², how many nodes are present?
a)
150
b)
180
c)
200
d)
250
68.
A routing protocol updates routing tables every 20 seconds. If the update message is 512 bytes and the data rate is 1 Mbps, how long does it take to transmit an update?
a)
3 ms
b)
4 ms
c)
5 ms
d)
6 ms
69.
A mobile node moves at 72 km/h in a network operating at 1.8 GHz. What is the approximate Doppler shift?
a)
120 Hz
b)
240 Hz
c)
360 Hz
d)
480 Hz
70.
A reactive routing protocol in an ad-hoc network has a route request timeout of 2 seconds. If the route discovery process fails 3 times, what is the total delay before failure is declared?
a)
4s
b)
6s
c)
8s
d)
10s
71.
A wireless link operates at 2 Mbps with a propagation delay of 10 ms. If the frame size is 1000 bytes, what is the transmission time?
a)
4 ms
b)
5 ms
c)
6 ms
d)
8 ms
72.
A wireless system employs FHSS with 75 hopping frequencies. If each frequency hop takes 0.1 ms, what is the total time for one full cycle?
a)
5 ms
b)
7.5 ms
c)
10 ms
d)
15 ms
73.
A mobile network has 5000 users, each generating 0.02 Erlangs of traffic. What is the total traffic load?
a)
50 Erlangs
b)
100 Erlangs
c)
200 Erlangs
d)
250 Erlangs
74.
A cellular network uses OFDMA with a subcarrier spacing of 15 kHz. If the available bandwidth is 30 MHz, how many subcarriers can be allocated?
a)
1000
b)
1500
c)
2000
d)
3000
75.
In iOS, the Mach kernel is used for process communication. If 5 processes each send 2 messages of 50KB, what is the total inter-process communication data?
a)
250KB
b)
500KB
c)
750KB
d)
1000KB
76.
A Blackberry application sends a packet of 1MB over a 2 Mbps network. If network overhead is 10%, what is the actual data transmission time?
a)
4 sec
b)
5 sec
c)
6 sec
d)
7 sec
77.
A Windows Phone app consumes 5% battery per hour. If the device starts at 80% charge, how long until it reaches 20%?
a)
8 hrs
b)
10 hrs
c)
12 hrs
d)
14 hrs
78.
J2ME applications run on the KVM (Kilo Virtual Machine). If the KVM supports a maximum heap size of 256KB and a single app requires 64KB, how many apps can run simultaneously?
a)
2
b)
3
c)
4
d)
5
79.
Symbian OS uses an EKA2 microkernel. If context switching takes 5ms and 10 processes switch per second, what is the total CPU overhead?
a)
25ms
b)
50ms
c)
75ms
d)
100ms
80.
Android's Dalvik VM interprets bytecode. If each method invocation takes 5ms and 200 methods execute, what is the total execution time?
a)
500ms
b)
800ms
c)
1000ms
d)
1200ms
81.
If a Palm OS device executes 5000 instructions per second and each instruction takes 2 clock cycles, what is the clock speed of the processor?
a)
5 kHz
b)
10 kHz
c)
15 kHz
d)
20 kHz
82.
Windows Mobile manages power by scaling CPU frequency. If the CPU reduces from 1.2 GHz to 800 MHz, what is the percentage decrease in clock speed?
a)
20%
b)
25%
c)
33%
d)
50%
83.
In Android architecture, the Application Framework provides access to which of the following managers?
a)
Activity Manager
b)
Window Manager
c)
Package Manager
d)
All of the above
84.
A smartphone with an ARM Cortex-A53 processor running at 2.0 GHz executes 1.5 instructions per cycle (IPC). What is the approximate number of instructions executed per second?
a)
2.5 billion
b)
3 billion
c)
3.5 billion
d)
4 billion
85.
An Android application has 10 background threads, each consuming 5% of CPU. If the device has a quad-core 2 GHz processor, what is the CPU utilization for these threads?
a)
20%
b)
30%
c)
40%
d)
50%
86.
In iOS, the Darwin kernel is based on which fundamental operating system?
a)
Linux
b)
BSD Unix
c)
Windows NT
d)
Minix
87.
A mobile device running Android consumes 2W in idle mode and 5W while running an app. If the app runs for 2 hours and idle for 8 hours, what is the total energy consumption?
a)
24 Wh
b)
26 Wh
c)
28 Wh
d)
30 Wh
88.
An Android app with a memory leak increases its heap size by 10 MB per minute. If the initial heap size is 64 MB and the device has 512 MB RAM, how long before the app crashes due to memory exhaustion?
a)
30 min
b)
45 min
c)
50 min
d)
60 min
89.
An iOS application using Objective-C allocates an array of 1000 objects, each 256 bytes in size. What is the total memory occupied by the array?
a)
250 KB
b)
256 KB
c)
512 KB
d)
1 MB
90.
A Windows Phone app runs under WinRT with a system overhead of 15%. If the available memory is 1 GB, how much memory is actually available for the application?
a)
750 MB
b)
800 MB
c)
850 MB
d)
900 MB
91.
A mobile OS scheduler gives 20% CPU to foreground apps and 5% CPU to background apps. If there are 3 foreground and 4 background apps running, what is the total CPU used?
a)
50%
b)
60%
c)
65%
d)
70%
92.
An Android app consumes 10 MB RAM per minute. If the available RAM is 1 GB, what is the maximum continuous runtime before running out of memory?
a)
90 min
b)
95 min
c)
100 min
d)
110 min
93.
In Palm OS, a developer allocates 128 KB heap space per process. If the device has 8 MB RAM, what is the maximum number of processes that can run simultaneously?
a)
32
b)
48
c)
64
d)
128
94.
A J2ME app running on a mobile device executes 10^6 bytecode instructions per second. If each instruction takes 5 CPU cycles and the processor runs at 500 MHz, what is the CPU utilization?
a)
1%
b)
2%
c)
5%
d)
10%
95.
A Symbian OS process has a priority of 5, and another has a priority of 10. If CPU time is allocated proportionally to priority, what percentage of CPU does the higher-priority process get?
a)
50%
b)
60%
c)
66.67%
d)
75%
96.
A mobile OS runs background services consuming 300 mW, while the active screen consumes 2.5 W. If a battery has 3000 mWh capacity, what is the battery life in screen-on mode?
a)
1 hour
b)
1.2 hours
c)
1.5 hours
d)
2 hours
97.
An iOS app requires a minimum of 300 MB RAM to function correctly. If the device has 2 GB RAM with 1 GB already in use, can the app run without affecting performance?
a)
Yes
b)
No
c)
Only if optimized
d)
Depends on OS scheduling
98.
A Linux-based mobile OS has a process scheduler with a time quantum of 10 ms. If a process requires 100 ms CPU time, how many scheduling cycles are required?
a)
5
b)
8
c)
10
d)
12
99.
If an Android application initiates 5 background services, each consuming 15MB of RAM, what is the total RAM consumption?
a)
50MB
b)
60MB
c)
75MB
d)
90MB
100.
A mobile data synchronization process transfers 500KB every 2 seconds. How much data is transferred in 1 minute?
a)
12MB
b)
15MB
c)
18MB
d)
25MB
101.
In Android, an Intent is used to start services. If an application sends 4 Intents per second, how many are sent in 10 minutes?
a)
600
b)
1200
c)
2400
d)
3600
102.
If an iOS multimedia framework processes 30 frames per second and each frame is 2MB, what is the total data processed per second?
a)
30MB
b)
40MB
c)
50MB
d)
60MB
103.
An Android application has 4 background threads running concurrently, each executing 200 operations per second. How many operations execute per second in total?
a)
400
b)
600
c)
800
d)
1000
104.
A mobile peer-to-peer network consists of 8 devices, each communicating with 3 others. What is the total number of communication links?
a)
12
b)
18
c)
24
d)
30
105.
A multimedia file of size 300MB is streamed over a 5 Mbps connection. If network overhead is 10%, what is the effective data transfer rate?
a)
4.0 Mbps
b)
4.2 Mbps
c)
4.5 Mbps
d)
4.8 Mbps
106.
If an Android UI thread renders graphics every 16ms, how many frames are rendered per second?
a)
30
b)
45
c)
60
d)
75
107.
A mobile application encrypts messages with a 256-bit key. If a brute-force attack tests 10^9 keys per second, how long will it take to test all possible keys?
a)
2^128 sec
b)
2^256 sec
c)
10^77 sec
d)
10^90 sec
108.
An application uses a multi-threaded approach to render graphics, where each thread takes 8 ms. If 4 threads run in parallel on a quad-core processor, what is the total rendering time for a frame?
a)
2 ms
b)
4 ms
c)
8 ms
d)
16 ms
109.
A mobile app maintains a persistent connection with a server using a heartbeat signal every 2 seconds. If the network drops 5% of packets and the connection lasts for 1 hour, how many heartbeat signals are successfully transmitted?
a)
1782
b)
1710
c)
1719
d)
1800
110.
A multimedia framework processes 60 frames per second, with each frame taking 25 milliseconds to decode and 15 milliseconds to render. What is the total processing time for 1000 frames?
a)
40 sec
b)
50 sec
c)
60 sec
d)
70 sec
111.
An Android Service runs in the background consuming 15 MB of RAM per minute. If the device has 1 GB RAM and 80% is used by other applications, how long before the system kills the service due to memory constraints?
a)
12 min
b)
15 min
c)
18 min
d)
20 min
112.
A peer-to-peer mobile architecture has a latency of 200 ms per hop. If data needs to traverse 8 hops to reach its destination, what is the total transmission latency?
a)
1.4 sec
b)
1.6 sec
c)
1.8 sec
d)
2.0 sec
113.
An application uses a multi-threaded approach to render graphics, where each thread takes 8 ms. If 4 threads run in parallel on a quad-core processor, what is the total rendering time for a frame?
a)
2 ms
b)
4 ms
c)
8 ms
d)
16 ms
114.
An Android app synchronizes data every 30 seconds, transferring 500 KB per sync. If the connection drops once every 5 minutes causing data loss, how much data is successfully transferred in one hour?
a)
54 MB
b)
55 MB
c)
56 MB
d)
57 MB
115.
A mobile app with personalization features stores 200 user preferences. Each preference takes 50 bytes. How much memory is required to store preferences for 10,000 users?
a)
100 MB
b)
95 MB
c)
90 MB
d)
85 MB
116.
An iOS multimedia framework encodes a video at 4 Mbps while an Android framework encodes at 3.5 Mbps. If both run for 15 minutes, what is the difference in data generated?
a)
45 MB
b)
50 MB
c)
55 MB
d)
60 MB
117.
A peer-to-peer network reduces latency by 15% after optimization. If the original latency was 1.2 seconds, what is the new latency?
a)
1.02 sec
b)
1.05 sec
c)
1.08 sec
d)
1.10 sec
118.
A mobile device performs 200 encryption operations per second. If an app requires 5000 operations for secure synchronization, how long does it take?
a)
20 sec
b)
22 sec
c)
24 sec
d)
26 sec
119.
An Android service handles 120 requests per minute, each consuming 2 MB of memory. How much RAM is used per hour?
a)
12 GB
b)
13 GB
c)
14 GB
d)
15 GB
120.
A graphics rendering engine runs at 144 FPS, with each frame consuming 6 MB of GPU memory. How much GPU memory is used in 10 seconds?
a)
8.64 GB
b)
7.68 GB
c)
9.2 GB
d)
10.5 GB
121.
A data replication algorithm has a 98% success rate. If 5000 updates are sent to a mobile database, how many updates fail?
a)
50
b)
80
c)
100
d)
120
122.
A mobile game downloads 1 GB of assets. If the internet speed is 10 Mbps, how long does it take to complete the download?
a)
12 min
b)
13.5 min
c)
14 min
d)
15 min
123.
A localization system detects a user's location every 5 seconds. If the battery supports 2000 location checks, how long before the battery is exhausted?
a)
2.5 hours
b)
3 hours
c)
3.5 hours
d)
4 hours
124.
A mobile app uses an authentication mechanism that takes 120 ms per request. If 500 users authenticate simultaneously, what is the total processing time?
a)
40 sec
b)
50 sec
c)
60 sec
d)
70 sec
125.
A mobile UI thread handles animations at 90 FPS. If an animation lasts for 3 seconds, how many frames are rendered?
a)
240
b)
260
c)
270
d)
300
126.
An image processing app processes 25 images per second. If a batch contains 5000 images, how long does processing take?
a)
190 sec
b)
200 sec
c)
210 sec
d)
220 sec
127.
A mobile network's reachability extends to 150 km, but obstacles reduce it by 30%. What is the effective range?
a)
90 km
b)
100 km
c)
105 km
d)
110 km
128.
An Android multimedia framework processes audio at 44.1 kHz. If a file is 3 minutes long, how many samples are processed?
a)
7.5 million
b)
8.5 million
c)
9 million
d)
10 million
129.
A security algorithm encrypts data at 5 MB/sec. If a mobile app encrypts a 750 MB file, how long does it take?
a)
140 sec
b)
150 sec
c)
160 sec
d)
170 sec
130.
A push notification system delivers 10,000 messages per second. If a delay causes a backlog of 500,000 messages, how long will it take to clear?
a)
30 sec
b)
45 sec
c)
50 sec
d)
60 sec
131.
A CPU executes 3 million instructions per second. If a mobile task requires 18 million instructions, how long does it take?
a)
4 sec
b)
5 sec
c)
6 sec
d)
7 sec
132.
A peer-to-peer mobile system increases efficiency by 25%. If the original response time was 400 ms, what is the new response time?
a)
280 ms
b)
300 ms
c)
320 ms
d)
340 ms
133.
An AI-powered mobile assistant processes voice commands in 150 ms. If 10,000 commands are processed daily, what is the total processing time?
a)
20 min
b)
22 min
c)
25 min
d)
28 min
134.
A mobile application using background services consumes 250 mA per hour. If the battery capacity is 3000 mAh, how long can the app run before the battery is fully drained?
a)
10 hours
b)
11 hours
c)
12 hours
d)
13 hours
135.
A multimedia framework encodes video at 30 FPS with each frame taking 12 ms to process. How long does it take to process a 2-minute video?
a)
24 sec
b)
30 sec
c)
36 sec
d)
42 sec
136.
An Android app maintains 5 concurrent threads, each executing at 20 ms per iteration. If an operation requires 500 iterations per thread, how long does it take?
a)
1 sec
b)
1.5 sec
c)
2 sec
d)
2.5 sec
137.
A mobile peer-to-peer network transmits data at 2 Mbps. If a file transfer involves 250 MB, how long will it take?
a)
15 min
b)
16.5 min
c)
18 min
d)
20 min
138.
A game renders at 120 FPS, with each frame taking 10 ms to compute physics and 5 ms for graphics. What is the total processing time per frame?
a)
12 ms
b)
14 ms
c)
15 ms
d)
16 ms
139.
A database synchronization mechanism sends 2 KB per transaction. If 50 transactions occur per second, how much data is transmitted in an hour?
a)
360 MB
b)
400 MB
c)
420 MB
d)
450 MB
140.
A secure authentication system requires 300 ms per handshake. If 2000 handshakes occur daily, what is the total time spent in authentication?
a)
8 min
b)
9 min
c)
10 min
d)
11 min
141.
An iOS multimedia framework processes 48 kHz audio in real time. If an audio file is 5 minutes long, how many samples are processed?
a)
14.2 million
b)
15.5 million
c)
16.8 million
d)
18 million
142.
A localization system updates a user's position every 3 seconds. If the system runs for 8 hours, how many updates are processed?
a)
9200
b)
9600
c)
10000
d)
10200
143.
A UI animation runs at 60 FPS, with each frame needing 4 MB of memory. If an animation lasts 10 seconds, how much memory is consumed?
a)
2.2 GB
b)
2.4 GB
c)
2.6 GB
d)
2.8 GB
144.
A push notification service handles 8000 messages per second. If an overload queues up 600,000 messages, how long will it take to clear?
a)
70 sec
b)
72 sec
c)
75 sec
d)
78 sec
145.
A peer-to-peer application increases bandwidth efficiency by 40%. If the original data transfer took 50 seconds, what is the new transfer time?
a)
28 sec
b)
30 sec
c)
32 sec
d)
35 sec
146.
A security algorithm requires 75 ms per encryption cycle. If an app needs 1200 encryptions per hour, what is the total processing time?
a)
85 sec
b)
90 sec
c)
95 sec
d)
100 sec
147.
An AI-based mobile assistant processes 200 queries per second. If the system handles 180,000 queries in a day, how long does it actively process data?
a)
12 min
b)
14 min
c)
15 min
d)
16 min
100 %
