GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM)

What is the uplink frequency range for GSM 900?

• 890-915 MHz

• 935-960 MHz

• 1710-1785 MHz

• 1850-1910 MHz

Which component of the GSM architecture handles the radio communication between the mobile station and the network?

• Mobile Switching Center (MSC)

• Base Transceiver Station (BTS)

• Base Station Controller (BSC)

• Home Location Register (HLR)

What information does the Subscriber Identity Module (SIM) contain?

• • International Mobile Equipment Identity (IMEI)

• International Mobile Subscriber Identity (IMSI)

• Base Station Controller details

• Mobile Switching Center location

What is the primary function of the Base Station Controller (BSC) in the GSM architecture?

• It stores subscriber data.

• It handles call setup and handovers.

• It manages roaming agreements.

• It encrypts data transmissions.

How does a GSM system ensure secure access to the network?

• Through the use of frequency hopping.

• • By using the Subscriber Identity Module (SIM) protected with a PIN.

• By limiting the number of users per cell.

• Through periodic location updates.

Which of the following statements best describes the role of the Home Location Register (HLR) in GSM?

• It controls the radio frequency spectrum.

• It authenticates and tracks active mobile stations.

• It contains administrative information about subscribers and their current locations.

• It handles call setup and disconnection.

What is the purpose of the Equipment Identity Register (EIR) in the GSM system?

• To manage and control network traffic.

• To store the identities of mobile equipment and track their status.

• To facilitate international roaming.

• To update the location of mobile subscribers.

How does the GSM architecture handle call setup and management?

• By directly connecting mobile stations to each other.

• Through the coordination between the Base Station Controller (BSC) and Mobile Switching Center (MSC).

• By storing all call details in the Subscriber Identity Module (SIM).

• Using the International Mobile Subscriber Identity (IMSI) to identify calls.
  
  

What function does the Visitor Location Register (VLR) serve in the GSM network?

• • It manages call forwarding and call barring services.

• It temporarily stores information about subscribers currently in its area.

• It handles the encryption of voice and data transmissions.

• It maintains a permanent record of all subscribers.

Why was GSM initially developed in Europe?

• To introduce a standardized mobile communication system across countries.

• To compete with the CDMA standard in the United States.

• To create a government-controlled mobile network.

• To restrict mobile communication to only European users.