Mobile Computing Important MCQs (Multiple Choice Questions)

KDK College of Engineering Nagpur

Department of Information Technology

7

th

Sem BE IT

Elective-1 Mobile Computing

Objective Questions _ Set_I

______________________________________________________________________________

1) For 802.11 System Architecture Which of the following is true c

I. An association between a station and a BSS is dynamic.

II. Stations may turn off, come within range, and go out of range.

a) I Only

b) II Only

c) Both I & II

d) None of this

2. For 802.11 System Architecture ,Distribution System can be a d

a) Switch

b) Wired network

c) Wireless network

d) All of the above

3. Which of the following is not a component of 802.11 - Architecture of an infrastructure

network – a

a) Independent Basic service set

b) Portal

c) Distribution system

d) Access point

4. 802.11 - Architecture of an ad-hoc network is useful for- b

a) Direct communication within a unlimited range

b) Direct communication within a limited range

c) Indirect communication within a limited range

d) None of mentioned

5. Which of the following is not a MAC Layer Functions – d

a) On transmission, assemble data into a frame with address and

error detection fields.

b) On reception, disassemble frame, and perform address recognition

and error detection.

c) Govern access to the LAN transmission medium.

d) Provide an interface to higher layers and perform flow and error control

6. Which of the following is not a function associated with MAC Management c

a) Synchronization

b) Roaming

c) fragmentation

d) power management

7. PLCP stands for- b

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a) Physical Layer Control Protocol

b) Physical Layer Convergence Protocol

c) Physical Layer Congestion Protocol

d) None of above

8. Which of the following is a functionality associated with PMD Physical Medium

Dependent layer in WLAN protocol architecture a

a) modulation, coding

b) channel selection, MIB

c) coordination of all management functions

d) access mechanisms, fragmentation, encryption

9. Which of the following is a functionality associated with Station Management in 802.11

protocol architecture c

a) modulation, coding

b) channel selection, MIB

c) coordination of all management functions

d) access mechanisms, fragmentation, encryption

10. DCF in MAC layer of IEEE 802.11 WLAN uses ______technique. c

a) CSMA/CD

b) Physical channel sensing

c) CSMA/CA

d) All of mentioned

11. Which of the following is not a Distribution System Services (DSS) ? c

a) Association

b) Disassociation

c) Authentication

d) Integration

12. In IEEE 802.11, which of the following is a service initiated by station? d

a) privacy

b) Distribution

c) Integration

d) Reassociation

13. In IEEE 802.11 Services, which service is not used to support MSDU delivery? b

a) Integration

b) Authentication

c) Disassociation

d) Distribution

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14. Which of the MAC Management function allow the station to switch the system to low

power or to turn off the power?

b

a) Synchronization

b) Power Management

c) Roaming

d) None of mentioned

15. In IEEE 802.11 - Frame format, which of the following is not a type of frame? a

a) Sequence frame

b) control frames,

c) management frames,

d) data frames

16. Authentication service is a service provided by b

a. Distribution system

b. Station

c. Both

d. None

17. MIB in WLAN stands for a

a. Management Information Base

b. Management Internet Band

c. Machine Information Band

d. Machine Information Base

18. In WLAN, a special frame CTS is _____ byte long c

a. 10

b. 20

c. 14

d. 24

19. In WLAN, a special frame RTS is _____ byte long b

a. 10

b. 20

c. 14

d. 24

20. sending a probe on each channel and waiting for a response is called as – b

a. passive scanning

b. active scanning

c. roaming

d. none of above

21. Mobility between BSSs and within ESS is- b

a. Basic mobility

b. Micro mobility

c. Macro mobility

d. None

22. Mobility between two ESS is called as c

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a. Basic mobility

b. Micro mobility

c. Macro mobility

d. None

23. When device is capable of moving within service area of AP while remains connected

with the network is - a

a. Basic mobility

b. Micro mobility

c. Macro mobility

d. None

24. Authentication in IEEE 802.11 are- a,c

a. open system

b. Closed System

c. shared key

d. All of mentioned

25. Open system authentication simply provides a way for two parties to agree to exchange

data and provides no security benefits. Identify whether the statement is true or false

a

a. True

b. False

c. Cannot say

d. None

26. Which of the following is not a component of Mobile agent? b

a) Code

b) Process

c) Attributes

d) State

27. Mobile agent is _________ that can migrate from system to system within a network

environment to improve performance. a

a) Software program

b) Hardware

c) Firmware

d) malware

28. Information describing the agent, its origin and owner, its movement history, resource

requirements, authentication keys etc. means- d

a) code

b) State

c) Behavior

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d) Attribute

29. Behavioral aspect of Mobile code System contains the types- d

a) Code on Demand

b) Remote Evaluation

c) Mobile Agents

d) All of mentioned

30. Java Applets is an example of – a

a) Code on Demand

b) Remote Evaluation

c) Mobile Agents

e) Client server

31. WWW, RPC, Webservices, CORBA, EJBs are examples of_______ Mobile code system

d

a) Code on Demand

b) Remote Evaluation

c) Mobile Agents

d) Client server

32. In code on demand mobile code system, data is _______ & code is ___________ a

a) Static,mobile

b) dynamic,mobile

c) Static,mobile

d) None of mentioned

33. Which of the following is not a property of mobile agent? c

a) Intelligent functionality

b) Agent communication language

c) consistency

d) Mobility

34. Which of the following is not an advantage of Mobile Agent ? b

a) overcome network latency in real-time systems

b) increase in the network load

c) encapsulate protocols by bringing their own protocol code

d) none of above

35. Which of the following is not a characteristic of Mobile agent? a

a) Agent to host communication

b) Prevent agent interference

c) Unique identity

d) Must determine what other agents are executing on agent host

36. Which of the following is not a characteristic of Mobile agent? c

a) Agent to agent communication

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b) Prevent agent interference

c) Multiple identity

d) None of above

37. Automatic program Updates example exhibits which of the following property of Mobile

agent? b

a) Intelligent functionality

b) Autonomy

c) Mobility

d) Agent communication language

38. The agents which are helpful in commercial sites are c

a) Network & system mgmt agents

b) User assistance agents

c) Interest matching agents

d) Organizational structure agents

39. When moving, a mobile agent carries code + data state + execution state. This scenario is

seen in case of – b

a) Weak mobility

b) Strong mobility

c) Hybrid mobility

d) None of mentioned

40. MASIF stands for- d

a) Mobile Agent System Interoperability Forum

b) Mobile Agent System Internet Facilities

c) Mobile Agent System Internet Forum

d) Mobile Agent System Interoperability Facilities

41. load balancing & failure anticipation are functionalities associated with c

a) Interest matching agents

b) Organizational structure agents

c) Network & system mgmt agents

d) User assistance agents

42. The agents which are used at user level to provide services to users are d

a) Interest matching agents

b) Organizational structure agents

c) Network & system mgmt agents

d) User assistance agents

43. An agent system is a ________that can create, interpret, execute, transfer and terminate

agents. b

a) Network

b) Platform

c) Protocol

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d) None

44. Currently, most agents are programmed in _________language for portability a

a) an interpreted language

b) procedural language

c) structured Query Language

d) all of mentioned

45. Which of the following is not an events in Mobile Agent’s life-time c

a) Creation

b) Activation

c) Mutation

d) Cloning

46. An Events in Mobile Agent’s life-time in which a brand new agent is born and its state is

initialized - c

a) Cloning

b) Activation

c) Creation

d) Deactivation

47. An Events in Mobile Agent’s life-time in which an agent travels to a new host. a

a) Dispatch

b) Retraction

c) Disposal

d) Cloning

48. An Events in Mobile Agent’s life-time in which an agent is brought back from a remote

host along with its state to the home machine. b

a) Dispatch

b) Retraction

c) Disposal

d) Cloning

49. Which of the following is not a reason among Seven Good Reasons for Mobile Agents

c

a) They encapsulate protocols

b) They execute asynchronously and autonomously

c) They increase network load

d) They overcome network latency

50. Possible applications of Mobile agents are- d

a) E-Commerce

b) Personal Assistance

c) Secure Brokering

d) All of mentioned

51. Which of the following is not a key elements to achieve interoperability between agents

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d

a) Common agent communication language and protocol

b) Common format of context of communication,

c) Shared ontology

d) an agent must authenticate itself to the host

52. The requirement in which host enforces strict access control to its resources a

a) Authorization

b) Authentication

c) Auditing

d) None of mentioned

53. Agent poses as another agent to gain access to services or data at a host in- a

a) Masquerading

b) Denial of Service

c) Unauthorized Access

d) None of mentioned

54. Which of the following are agent Protecting mechanism- a,b,c,d

a) Digital Signature

b) Safe Code Interpretation

c) Software-Based Fault Isolation

d) Path Histories

55. One of the most widely used interpretative languages today for mobile agent is c

a) C++

b) Ada

c) Java

d) Visual Basic

56. Aglets are java based framework for Mobile agents and designed by- a

a) IBM

b) Microsoft

c) Nokia

d) d) None

57. Transportable agent system Agent Tcl is developed using a language A

a) TcL

b) Java

c) Scheme

d) none

58. Which of the following is not a Java based mobile agent system- c

a) Voyager

b) Aglets

c) Tacoma

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d) Odyssey

59. Which of the following is not a mobile agent platform? c

a) Voyager

b) Aglets

a) Tahiti

b) Agent Tcl

60. Which of the following is not true about Aglet? c

a) It is mobile Java Object

b) It is autonomous

c) none

d) It is reactive

61. Aglet context is- a

a) Workspace

b) Shield for aglet

c) Object exchanged between aglet

e) All of above

62. Aglets are applied in different scenarios like D

a) e-commerce

b) e-market place

c) Air tickets & package tours

d) All of mentioned

63. Aglets are java based framework for Mobile agents and designed by- a

a) IBM

b) Microsoft

c) Nokia

d) None

64. Agent_Tcl uses pretty good policy(PGP) for which one of the following function?

b

a) To encrypt servers

b) To authenticate servers

c) To authorize servers

d) none of above

65. Which of the following is a Task not performed by server in agent TcL - c

a) migration

b) Low level inter agent communication

c) security

d) status of running agents

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66. Agent level support system with docking system includes- d

a) Server

b) support agent

c) Network monitor

d) All

67. Which one of the following is not considered as a requirement for mobile agent System?

d

a) Portability

b) Security

c) Ubiquity

d) Resource availability

68. WAP stands for – A

a) Wireless Application Protocol

b) Wired Application Protocol

c) Wireless Analysis Protocol

d) Wired Analysis Protocol

69. WAP sites (Mobile internet sites) are websites written in, or dynamically converted to-

C

a) HTML

b) XML

c) WML

d) none of mentioned

70. WAP application is enable to access WAP sites using which of the following WAP

browser- b

a) Macro-browser

b) Micro-browser

c) Mini – browser

d) All

71. In WTP, which class of transaction service is responsible to provide unreliable message

transfer without any result message a

a) Class 0

b) Class 1

c) Class 2

d) None of mentioned

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Mobile Computing Important MCQs

Mobile Computing Important MCQs

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