Mobile Computing M.Sc. 4 Semester/Term UOS — University of Sargodha 2017

University of Sargodha

M.Sc. 4th Term Examination 2017

Subject: Information Technology

Paper: Mobile Computing (IT-4545)

Time Allowed: 2.30 Hours

Maximum Marks: 80

Note: Objective part is compulsory. Attempt any Four questions from subjective part.

Objective Part (Compulsory)

Q. No.1. Write short answers of the following in 2-3 lines on your answer sheet. (2*16)

i. Separating Resource Managers

ii. MIDP Java

iii. Symbian OS

iv. Ad-hoc Networking?

v. Application-Level Security

vi. Software Stack

vii. Linear Data Structures

viii. Data Packing

ix. Rules of Thumb for Mobile Java

x. Naming Conventions

xi. Cleanup Stack

xii. Factory Methods

xiii. Event-Based Programming

xiv. Auxiliary Files

xv. Profiles

xvi. Resource File

Subjective Part (4*12=48)

Q.NO 2: In-place execution enables the execution of programs directly from ROM. What rationale is there not to implement all features of a mobile device using this technique?

Q.NO 3: What kind of design choices could be made to ensure that there are always enough resources for making an emergency call? Is reserving memory enough, or should there be also other means?

Q.NO 4: Compare application development in MIDP Java and the Symbian OS environments. What kinds of benefits or problems can you find in them?

Q.NO 5: What benefits or problems would occur when implementing a Java environment where both CLDC- and CDC-based profiles could be used? For which kinds of devices would this be an option?

Q.NO 6: What kinds of problems are possible when a dynamically linked library and an application are separated in the device? What kinds of precautions could be made? How do signature- and ordinal-based approaches differ in this respect?

Q.NO 7: Compare MIDP Java's and Symbian OS's implementation of pseudo-parallel execution. What differences must the application developer consider when using them?