Advanced Mobile Phone System (AMPS) Technology Quiz and Flashcards

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Questions and Answers

What protocol is employed by the MSF to notify the MHF about the presence of the M-ES in its service area?

Mobile Initiated HANDOFF Protocol (MIHP)

Frequency Control Channel Protocol (FCCHP)

Network Entity Identifier Protocol (NEIP)

Mobile Network Location Protocol (MNLP) (correct)

What function is responsible for informing the old BS that a handover has occurred and redirecting packets to the new BS?

Mobile Home Function (correct)

Network Entity Identifier

Mobile Serving Function

Authentication Management Entity

Which protocol is used for CDPD authentication by the Management Entity (MME) present in both MD-IS and M-ES?

Mobile Initiated Handoff Protocol

Advanced Mobile Phone System Protocol (AMPS)

Network Entity Identifier Protocol

Mobile Network Registration Protocol (correct)

What is used for generating session keys in CDPD based on Diffie-Hellman Key exchange with 256 bit values?

Public Key Signup and view all the answers

In the context of CDPD, what is used for encrypting all data using a secret key that differs in each session?

Public Key Signup and view all the answers

Which function requests redirect and has a redirect function with the Mobile Home Function during a mobile-initiated handoff?

Mobile Serving Function Signup and view all the answers

What type of security functions are limited to data link confidentiality and M-ES authentication in CDPD?

Block Data Encryption Signup and view all the answers

When does handoff occur in a mobile network based on a set threshold of RSSI value by the operator?

When power of ME-IS falls below the threshold Signup and view all the answers

What is the purpose of using IMEI in a database to track handsets?

To prevent unauthorized calls from stolen or defective devices Signup and view all the answers

Which algorithm in GSM is specifically used for encryption purposes?

A5 algorithm Signup and view all the answers

What is the function of a SIM card in a cellular system?

To authenticate the user Signup and view all the answers

Which of the following mechanisms is responsible for a mobile device connecting with a wireless network?

Registration Signup and view all the answers

In a cellular system, what does security implementation aim to prevent?

Disclosure of subscriber numbers Signup and view all the answers

What unique feature does the SIM card possess in terms of security functions?

Microprocessor chip for calculations Signup and view all the answers

Which encryption algorithm is employed for ensuring confidentiality in GSM calls?

A5 algorithm Signup and view all the answers

What kind of calls can be encrypted in a cellular system?

All calls Signup and view all the answers

Study Notes

Cellular Technology

AMPS (Advanced Mobile Phone System) is a first-generation cellular technology that uses separate frequencies, or "channels", for each conversation.
It is an analog standard, susceptible to static and noise, with no protection from 'eavesdropping' using a scanner.

Cellular Digital Packet Data (CDPD)

Design goals: Location Independence, Service Provider independence, Application transparency, and multi-protocol support, Commercial off-the-shelf technology, and interoperability.
Services: Data Transfer, Network Support, and Network Application Services.
Reference Architecture: AIR (interface between mobile end station and cell site equipment), EXTERNAL (interface connecting a non-CDPD network with a CDPD network).
RC4 is used for block data encryption, but it is not very secure.

Radio Resource Management (RRM)

RRM is handled by the management layer in CDPD and contains procedures to handle dynamically changing RF environments.
Acquires and releases channels due to competition between CDPD and AMPS.
Handles handoffs from one cell to another or from one channel to another.

GPRS (General Packet Radio System)

Also known as 2.5G, a step towards internet access.
Keeps users online, allows voice calls, and access to the internet on-the-go.
Permits network operators to execute an Internet Protocol (IP) based core architecture for integrated voice and data applications.

GSM (Global System for Mobile)

A second-generation cellular standard developed for voice services and data delivery using digital modulation.
Services: Tele-services (voice communication), Bearer or Data Services (information transfer), and Supplementary services (call related services).

GSM System Architecture

Components: Mobile Station (MS), Mobile Equipment (ME), Subscriber Identity Module (SIM), Base Station Subsystem (BSS), Base Transceiver Station (BTS), Base Station Controller (BSC), Network Switching Subsystem (NSS), and Public Land Mobile Network (PLMN).
PLMN: The area covered by one network operator.

SMS (Short Message Service)

There are four layers in SMS: Application layer, Transfer layer, Relay layer, and Link Layer.
SMS can be transmitted in time slots that are freed up in the control channels.

Mobile Application Protocols

Mobile applications are becoming increasingly important in the age of the internet.
Challenges in providing services on cellular networks include limited resources such as bandwidth, processing power, memory, display sizes, and interfaces.

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Description

Test your knowledge about AMPS, a first-generation cellular technology known for using separate frequencies for each conversation. Learn about its features, vulnerabilities, and more with this quiz.

AMPS (Advanced Mobile Phone System) Technology Quiz

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