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GSM Network Architecture

Description: This quiz covers the fundamental concepts and components of GSM Network Architecture.
Number of Questions: 15
Created by:
Tags: gsm mobile networks cellular architecture
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What is the primary function of the Base Transceiver Station (BTS) in a GSM network?

  1. Routing calls between mobile devices

  2. Managing network security

  3. Transmitting and receiving signals to and from mobile devices

  4. Storing user data and applications

Show answer
Correct Option: C
Explanation:

The BTS is responsible for handling radio communication with mobile devices within its coverage area.

Which component of the GSM network is responsible for managing the handover process when a mobile device moves between cells?

  1. Mobile Switching Center (MSC)

  2. Base Station Controller (BSC)

  3. Home Location Register (HLR)

  4. Visitor Location Register (VLR)

Show answer
Correct Option: B
Explanation:

The BSC coordinates the handover process and ensures seamless connectivity as the mobile device moves between cells.

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

  1. Managing user subscriptions and billing information

  2. Generating temporary encryption keys for secure communication

  3. Storing user location and mobility data

  4. Providing internet access to mobile devices

Show answer
Correct Option: B
Explanation:

The AuC generates temporary encryption keys (Ki) used for encrypting communication between mobile devices and the network.

Which network element in GSM is responsible for storing and managing user subscriptions and related information?

  1. Home Location Register (HLR)

  2. Visitor Location Register (VLR)

  3. Equipment Identity Register (EIR)

  4. Authentication Center (AuC)

Show answer
Correct Option: A
Explanation:

The HLR is the central database that stores permanent user subscription data, including phone numbers, service profiles, and billing information.

What is the role of the Equipment Identity Register (EIR) in a GSM network?

  1. Managing the allocation of IP addresses to mobile devices

  2. Storing and validating the identities of mobile devices

  3. Providing routing information for calls and messages

  4. Maintaining user location and mobility data

Show answer
Correct Option: B
Explanation:

The EIR stores and validates the International Mobile Equipment Identity (IMEI) of mobile devices to prevent unauthorized access to the network.

Which component of the GSM network is responsible for routing calls and messages between mobile devices and other networks?

  1. Mobile Switching Center (MSC)

  2. Base Transceiver Station (BTS)

  3. Visitor Location Register (VLR)

  4. Home Location Register (HLR)

Show answer
Correct Option: A
Explanation:

The MSC is the central switching element that routes calls and messages between mobile devices and other networks, such as fixed-line networks or other mobile networks.

What is the purpose of the Transcoding Rate and Adaptation Unit (TRAU) in a GSM network?

  1. Converting analog signals to digital signals

  2. Compressing and decompressing speech data for efficient transmission

  3. Encrypting and decrypting communication between mobile devices and the network

  4. Managing the allocation of radio resources and channels

Show answer
Correct Option: B
Explanation:

The TRAU compresses speech data using a specific algorithm to reduce the bandwidth required for transmission.

Which network element in GSM is responsible for managing the allocation of radio resources and channels to mobile devices?

  1. Base Station Controller (BSC)

  2. Mobile Switching Center (MSC)

  3. Home Location Register (HLR)

  4. Visitor Location Register (VLR)

Show answer
Correct Option: A
Explanation:

The BSC manages the allocation of radio resources, including channels and time slots, to mobile devices within its coverage area.

What is the role of the Visitor Location Register (VLR) in a GSM network?

  1. Storing temporary user data and location information for roaming devices

  2. Managing the allocation of IP addresses to mobile devices

  3. Providing routing information for calls and messages

  4. Storing and validating the identities of mobile devices

Show answer
Correct Option: A
Explanation:

The VLR stores temporary user data and location information for mobile devices that are roaming on the network.

Which component of the GSM network is responsible for encrypting and decrypting communication between mobile devices and the network?

  1. Base Transceiver Station (BTS)

  2. Mobile Switching Center (MSC)

  3. Authentication Center (AuC)

  4. Visitor Location Register (VLR)

Show answer
Correct Option: C
Explanation:

The AuC generates temporary encryption keys (Ki) used for encrypting communication between mobile devices and the network.

What is the purpose of the Signaling System 7 (SS7) in a GSM network?

  1. Providing a common signaling protocol for communication between network elements

  2. Managing the allocation of radio resources and channels

  3. Storing user data and applications

  4. Encrypting and decrypting communication between mobile devices and the network

Show answer
Correct Option: A
Explanation:

SS7 is a signaling protocol used for communication between network elements, such as MSCs, BSCs, and HLRs, to exchange signaling information related to call setup, routing, and handover.

Which network element in GSM is responsible for managing the mobility of mobile devices as they move between cells?

  1. Mobile Switching Center (MSC)

  2. Base Station Controller (BSC)

  3. Home Location Register (HLR)

  4. Visitor Location Register (VLR)

Show answer
Correct Option: B
Explanation:

The BSC manages the mobility of mobile devices as they move between cells within its coverage area, handling handover procedures and maintaining continuous connectivity.

What is the role of the Equipment Identity Register (EIR) in a GSM network?

  1. Storing and validating the identities of mobile devices

  2. Managing the allocation of IP addresses to mobile devices

  3. Providing routing information for calls and messages

  4. Storing user data and applications

Show answer
Correct Option: A
Explanation:

The EIR stores and validates the International Mobile Equipment Identity (IMEI) of mobile devices to prevent unauthorized access to the network.

Which component of the GSM network is responsible for managing the allocation of radio resources and channels to mobile devices?

  1. Base Station Controller (BSC)

  2. Mobile Switching Center (MSC)

  3. Home Location Register (HLR)

  4. Visitor Location Register (VLR)

Show answer
Correct Option: A
Explanation:

The BSC manages the allocation of radio resources, including channels and time slots, to mobile devices within its coverage area.

What is the purpose of the Transcoding Rate and Adaptation Unit (TRAU) in a GSM network?

  1. Converting analog signals to digital signals

  2. Compressing and decompressing speech data for efficient transmission

  3. Encrypting and decrypting communication between mobile devices and the network

  4. Managing the allocation of radio resources and channels

Show answer
Correct Option: B
Explanation:

The TRAU compresses speech data using a specific algorithm to reduce the bandwidth required for transmission.

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