Practical Based Exercise 1
QUESTION 1
Symbian OS
i) Features
- Browsing: full web browser support and WAP stack for mobile browsing
- Messaging: support SMS, MMS, EMS, POP3, IMAP4, SMTP, Standard attachment and fax
- Multimedia: shared access to screen, keyboard, font and bitmap, audio recoding and playback, image related functionality
- Communication protocol: TCP, IP vesion 4, IP version 6 USB, Bluetooth
- Mobile Telephony: abstract API for cellular system
- Data synchronization: support USB and Bluetooth links. Transfer file and document
- Security: full length encryption and certification management, certificate based application management
- Application environment: wide range of application using C++ and Java
- Multi-tasking: multitasking Kernel to support multi-tasking
- Robustness: data integrity and accept data from user quickly
- Flexible user interface design: easy to use and understand
- Flexible user interface design: easy to use and understand
ii) Development (+ advantage), (- disadvantage)
Java ME
+ Easy memory management
+ Easy to develop
+ Application can be ported to S40 Asha (Nokia’s feature-phone OS)
- Lack of APIs (maps, navigation, UI controls)
- Limited access to hardware
- Needs certification and signing
- Limited subset of Java
Symbian C++
+ Full access to hardware
+ Low memory footprint
+ Good profiling and debugging tools
- Lack of APIs (maps, navigation, UI controls)
- Steep learning curve
- Difficult memory management
- Needs certification and signing
Qt Framework
+ Good set of UI controls
+ Good customization options
+ Fast to develop
+ Application can be deployed for MeeGo with minor changes
+ Application can be deployed for MeeGo with minor changes
- Large memory footprint on older Symbian versions
- Lack of Symbian emulator (although Qt Simulator can simulate Qt on Symbian)
- The Mobility package can have some bugs
The Symbian OS System
Model contains the following layers:
·
UI
Framework Layer
·
Application
Services Layer (e.g. Java ME)
·
OS
Services Layer
-
Generic
OS Services
-
Communication
Services
-
Multimedia
and Graphics Services
-
Connectivity
Services
·
Basic
Services Layer
·
Kernel
Services and hardware Interface Layer
iv) Security technology/ model
Security Technology- TCB: Core components of platform security- TCE: Protects platform's sensitive API- Capabilities: Privileges to access sensitive APIs- Data Caging: Secure local storage- SIDs & VIDs: Secure ID for software and vendors- Security Boundaries & Policies: Secure IPC- Software Installer: Only allow trusted software
Model
-Trust model:
-Trust model:
v) Version History
References:
Windows Mobile OS
i) Features
- Wallet and Near Field Communication (NFC): Wallet feature enables user to credit, debit, loyalty and membership card information in one place
- Integrated VoIP apps: VoIP apps with the Windows Phone 8 dialler and contact list. This means user will be able to make VoIP calls right from the People Hub, just like we would with normal phone call.
- Data storage and syncing: Store all the data in cloud storage and sync email through email
- Shared Windows Core: Phone and computer can be interconnected to transfer file easily
- Multitasking: navigate
a file system similar to that of Windows 9x and Windows NT
- Internet Connection Sharing: Connection with the internet and other devices is available in windows mobile os
ii) Development
Windows C++
+ Full access to hardware
+ Low memory footprint
+ Good profiling and debugging tools
- Steep learning curve
- Difficult memory management
- Needs certification and signing
iii) Architecture
iv) Security technology/ model
- Does not support for removable storage
- No tethered file system access from a PC
- No concept of users ad user login
- Application origin based authentication and authorization
Models
Elements of Windows Phone Security Model
- Chambers
- Capabilities
- Application Safeguards
v) Version History
Windows Version:
Reference:
- https://www.slideshare.net/KamalakannanAnnamala/introduction-to-windows-phone-for-absolute-beginners
