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Mobile Network Architecture

Description: Mobile Network Architecture Quiz
Number of Questions: 15
Created by:
Tags: mobile networks cellular networks gsm lte
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What is the primary function of a Base Transceiver Station (BTS) in a mobile network?

  1. To connect mobile devices to the core network

  2. To provide coverage and transmit signals to mobile devices

  3. To manage the allocation of radio resources

  4. To handle call setup and termination

Show answer
Correct Option: B
Explanation:

A BTS is responsible for transmitting and receiving radio signals to and from mobile devices within its coverage area.

Which technology is commonly used for voice calls in GSM networks?

  1. Frequency Division Multiple Access (FDMA)

  2. Time Division Multiple Access (TDMA)

  3. Code Division Multiple Access (CDMA)

  4. Orthogonal Frequency Division Multiple Access (OFDMA)

Show answer
Correct Option: B
Explanation:

GSM networks typically use TDMA to allow multiple users to share the same frequency channel by allocating different time slots to each user.

What is the role of the Mobile Switching Center (MSC) in a mobile network?

  1. To manage the handover of calls between different cells

  2. To provide routing and switching of calls between mobile devices

  3. To handle the registration and authentication of mobile devices

  4. To assign IP addresses to mobile devices

Show answer
Correct Option: B
Explanation:

The MSC is responsible for establishing and maintaining connections between mobile devices, as well as routing calls to their intended destinations.

Which technology is used in LTE networks to achieve high data rates?

  1. Frequency Division Duplexing (FDD)

  2. Time Division Duplexing (TDD)

  3. Orthogonal Frequency Division Multiple Access (OFDMA)

  4. Single-Carrier Frequency Division Multiple Access (SC-FDMA)

Show answer
Correct Option: C
Explanation:

LTE networks employ OFDMA to divide the available spectrum into multiple subcarriers, allowing for higher data rates and improved spectral efficiency.

What is the purpose of a Home Location Register (HLR) in a mobile network?

  1. To store the current location of mobile devices

  2. To maintain subscriber information and authentication data

  3. To manage the allocation of radio resources

  4. To handle the routing of calls between different networks

Show answer
Correct Option: B
Explanation:

The HLR is a central database that stores subscriber information, such as their phone numbers, subscription details, and authentication credentials.

Which technology is used in GSM networks to provide secure communication?

  1. Frequency Hopping Spread Spectrum (FHSS)

  2. Direct Sequence Spread Spectrum (DSSS)

  3. Time Division Multiple Access (TDMA)

  4. Orthogonal Frequency Division Multiple Access (OFDMA)

Show answer
Correct Option: B
Explanation:

GSM networks utilize DSSS to spread the signal across a wider frequency band, making it more resistant to interference and eavesdropping.

What is the function of the Packet Data Network Gateway (PDN GW) in a mobile network?

  1. To provide connectivity between mobile devices and the Internet

  2. To manage the allocation of IP addresses to mobile devices

  3. To handle the routing of data packets between different networks

  4. To perform deep packet inspection and filtering

Show answer
Correct Option: A
Explanation:

The PDN GW serves as the gateway between the mobile network and the Internet, allowing mobile devices to access data services.

Which technology is used in LTE networks to reduce interference between adjacent cells?

  1. Frequency Reuse

  2. Cell Sectorization

  3. MIMO (Multiple-Input Multiple-Output)

  4. Beamforming

Show answer
Correct Option: B
Explanation:

LTE networks employ cell sectorization to divide each cell into multiple sectors, each with its own dedicated antenna, reducing interference between adjacent cells.

What is the purpose of the Visitor Location Register (VLR) in a mobile network?

  1. To store the current location of mobile devices

  2. To maintain subscriber information and authentication data

  3. To manage the allocation of radio resources

  4. To handle the routing of calls between different networks

Show answer
Correct Option: A
Explanation:

The VLR is a temporary database that stores the location information of mobile devices that are currently roaming in a particular network.

Which technology is used in GSM networks to increase the capacity of the system?

  1. Frequency Hopping Spread Spectrum (FHSS)

  2. Direct Sequence Spread Spectrum (DSSS)

  3. Time Division Multiple Access (TDMA)

  4. Orthogonal Frequency Division Multiple Access (OFDMA)

Show answer
Correct Option: C
Explanation:

GSM networks utilize TDMA to allow multiple users to share the same frequency channel by allocating different time slots to each user, increasing the system capacity.

What is the role of the Serving GPRS Support Node (SGSN) in a GPRS network?

  1. To provide connectivity between mobile devices and the Internet

  2. To manage the allocation of IP addresses to mobile devices

  3. To handle the routing of data packets between different networks

  4. To perform deep packet inspection and filtering

Show answer
Correct Option: C
Explanation:

The SGSN is responsible for routing data packets between mobile devices and the core network, as well as managing the mobility of mobile devices as they move between different cells.

Which technology is used in LTE networks to improve the coverage and signal quality?

  1. Frequency Reuse

  2. Cell Sectorization

  3. MIMO (Multiple-Input Multiple-Output)

  4. Beamforming

Show answer
Correct Option: C
Explanation:

LTE networks employ MIMO technology to use multiple antennas at both the transmitter and receiver, improving the signal quality and increasing the data rates.

What is the purpose of the Authentication Center (AuC) in a mobile network?

  1. To store the current location of mobile devices

  2. To maintain subscriber information and authentication data

  3. To manage the allocation of radio resources

  4. To handle the routing of calls between different networks

Show answer
Correct Option: B
Explanation:

The AuC is a central database that stores subscriber information, such as their phone numbers, subscription details, and authentication credentials, and is used to authenticate mobile devices when they connect to the network.

Which technology is used in GSM networks to reduce the effects of fading?

  1. Frequency Hopping Spread Spectrum (FHSS)

  2. Direct Sequence Spread Spectrum (DSSS)

  3. Time Division Multiple Access (TDMA)

  4. Orthogonal Frequency Division Multiple Access (OFDMA)

Show answer
Correct Option: A
Explanation:

GSM networks utilize FHSS to spread the signal across a wider frequency band, reducing the impact of fading by ensuring that the signal is not completely lost in any given frequency band.

What is the role of the Gateway GPRS Support Node (GGSN) in a GPRS network?

  1. To provide connectivity between mobile devices and the Internet

  2. To manage the allocation of IP addresses to mobile devices

  3. To handle the routing of data packets between different networks

  4. To perform deep packet inspection and filtering

Show answer
Correct Option: A
Explanation:

The GGSN serves as the gateway between the GPRS network and the Internet, allowing mobile devices to access data services.

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