WiMAX MCQs

These WiMAX multiple-choice questions and their answers will help you strengthen your grip on the subject of WiMAX. You can prepare for an upcoming exam or job interview with these 50 WiMAX MCQs.
So scroll down and start answering.

1: What is the full form of MPDU?

A. Microwave Protected Data Unit

B. Multi-access Protected Data Unit

C. MAC Protocol Data Unit

D. Media Protocol Data Unit

2: Which of the following are included in each data SA (Security Association)?

A. Two traffic encryption keys (TEKs)

B. TEK lifetime

C. Data SA type indicator

D. An authorization key (AK)

E. A key encryption key (KEK)

3: Which of the following multiplexing technologies is used in 802.16 for the downlink channel?

A. TDMA

B. TDM

C. TDD

D. FDD

A. Basic connection

B. Primary management connection

C. Secondary management connection

D. Any of the above

5: What is the maximum number of management connection pairs that can be created when a subscriber station (SS) first connects to a base station (BS)?

A. One

B. Two

C. Three

D. Four

6: Which of the following FFT (Fast Fourier Transform) sizes are supported in SOFDMA (Scalable OFDMA)?

A. 128

B. 256

C. 512

D. 1024

E. 2048

7: Which version of X.509 certificate is mandatory to be used in the 802.16 standard?

A. Version 1

B. Version 2

C. Version 3

D. Any of the above

8: What can be the maximum value of the traffic encryption key (TEK) lifetime?

A. 30 minutes

B. Half day

C. Seven days

D. Seventy days

9: In which of the following topology modes can the 802.16 standard be used?

A. Point-to-Point

B. Point-to-Multipoint

C. Mesh

D. All of the above

10: Which of the following are managed by the physical layer of the protocol stack in WiMAX?

A. Error Correction

B. Security

C. Connections

D. Bandwidth Request

11: In the subheader of a MAC frame, what will be the value of FC (fragment control) bits if it is the last fragment of the MSDU?

A. 00

B. 01

C. 10

D. 11

12: What is the length (size) of a connection identifier (CID)?

A. 4 bits

B. 8 bits

C. 16 bits

D. 32 bits

13: On which of the following frequency ranges does the first WiMAX standard (IEEE 802.16-2001) operate?

A. 2-11 GHz

B. 5-6 Ghz

C. 10-66 GHz

D. 2-6 GHz

14: In OFDM the original signal is divided into how many subcarriers or subchannels?

A. 64

B. 128

C. 256

D. 512

15: How many hash-based message authentication code (HMAC) keys are derived from the authorization key (AK) for communication between the subscriber station (SS) and the base station (BS)?

A. One

B. Two

C. Four

D. None of the above

16: Which of the following encryption algorithms are included in the 802.16 standard security sublayer?

A. Data Encryption Standard (DES)

B. Advanced Encryption Standard (AES)

C. Rivest Shamir Adleman (RSA)

D. None of the above

17: Which of the following connections is used for short, time-urgent MAC management messages?

A. Basic connection

B. Primary management connection

C. Secondary management connection

D. Any of the above

18: Which of the following multiplexing technologies is more spectrum-efficient and cost-efficient?

A. Frequency Division Multiplexing (FDM)

B. Orthogonal Frequency Division Multiplexing (OFDM)

19:

State whether true or false:

The MAC layer of WiMAX does not allow variable-sized frames to be constructed and transmitted.

True

False

20:

State whether true or false:

In OFDMA, multiple users can transmit data simultaneously.

True

False

21: Which of the following multiplexing technologies are used in 802.16?

A. FDD

B. TDMA

C. TDD

D. TDM

22: Which of the following are included in each authorization SA (Security Association)?

A. Downlink hash-based message authentication code (DHMAC)

B. Uplink hash-based message authentication code (UHMAC)

C. Type of data SA

D. An authorization key (AK)

E. A key encryption key (KEK)

F. All of the above

23:

State whether true or false:

Communication in WiMAX is connection-oriented.

True

False

24: Which of the following are the different types of data SAs (Security Associations)?

A. Primary

B. Secondary

C. Static

D. Dynamic

25: How many different types of uplink scheduling mechanisms are used to control contention between users and to modify their bandwidth requirements in the point to multi-point mode?

A. 2

B. 3

C. 4

D. 8

26: Which of the following are the new power management operations defined in 802.16e?

A. Active mode

B. Idle mode

C. Sleep mode

D. All of the above

A. Convergence Sublayer (CS)

B. Commom Part Sublayer (CPS)

C. Security Sublayer (SS)

D. None of the above

28: Which of the following are the two types of soft handovers defined in 802.16e?

A. Fast BS Switching

B. Secure BS Switching

C. Micro Diversity HandOver

D. Macro Diversity HandOver

29: Which of the following modulation technologies is/are supported by 802.16a?

A. QPSK

B. 16QAM

C. 64QAM

D. All of the above

30: How many types of security associations (SA) are defined in PKMv2 in the 802.16 standard?

A. One

B. Two

C. Three

D. Four

31: What is the other name for WiMAX?

A. WLAN

B. WMAN

C. Wi-Fi

D. WAN

32:

State whether true or false:

In PKMv2, only the BS can authenticate the SS.

True

False

33: In VOIP, change in payload and code sizes of MPDUs sent by SS depends on which of the following?

A. Feedback sent by the SS

B. Feedback received from the BS

C. Nether of the two

34: Which of the following duplexing technologies does 802.16 support?

A. FDD

B. TDMA

C. TDD

D. TDM

35: Which of the following certificates is used to allow the base station to identify the subscriber stations?

A. X.905

B. X.509

C. X.801

D. X.816

36: What is the length (size) of the key encryption (in bits) that the DES (data encryption standard) provides?

A. 32 bit

B. 56 bit

C. 64 bit

D. 128 bit

37: What is the length (in bits) of the header check sequence (HCS) field in a generic MAC header?

A. 2

B. 4

C. 8

D. 16

38: In the mobile WiMAX profiles, which of the following is mandatory?

A. Hard handover

B. Soft handover

C. Macro diversity handover

D. All of the above

39: What can be the maximum distance of a WiMAX connection?

A. 30 km

B. 50 km

C. 75 km

D. None of the above

40: Which of the following parameters are sent by the subscriber station (SS) in the ranging request packet (RNG-REQ) when a subscriber station (SS) wants a VOIP service stream from a base station (BS)?

A. Timing

B. Power

C. Bandwidth

D. Frequency

41: What is the full form of WiMAX?

A. Wireless Metropolitan Area Access

B. World-wide Interoperability for Microwave Access

C. World-wide Internet Maximum

D. Wireless with Microwave Access

42: Which of the following is more secure and stronger for the encryption of data?

A. Data encryption standard (DES)

B. Advanced encryption standard (AES)

43:

State whether true or false:

Out of the two MAC header formats defined in the IEEE 802.16 standard, the Generic MAC Header (GMH) frame is the only one used in the downlink

True

False

44: What is the default value of the authorization key (AK) lifetime?

A. 30 minutes

B. Half day

C. Seven days

D. Seventy days

45: Which of the following are true of the 48-bit Base Station ID (BSID)?

A. It is different from the MAC address of the base station

B. It is the same as the MAC address of the base station

C. It includes a 24-bit operator indicator

D. It includes a 16-bit operator indicator

46: Which of the following is the new scheduling mechanism defined in 802.16e?

A. Extended real time Polling Service (ErtPS)

B. Unsolicited Grant Service (UGS)

C. real time Polling Service (rtPS)

D. None of the above

47: In the point to multi point (PMP) mode, which of the following controls both uplink and downlink scheduling?

A. Subscriber station (SS)

B. Base station (BS)

C. Either of the two

D. Neither of the two

48: What is the link from the Base Station to the Subscriber Station known as?

A. Uplink

B. Downlink

C. Synchronous Link

D. Asynchronous Link

49: Which of the following is/are included in the subscriber station certificate?

A. IP address of the base station

B. Username

C. Authorization key

D. MAC address of the base station

50: On which of the following technologies is WiMax based upon?

A. IEEE 802.11

B. IEEE 802.3

C. IEEE 802.16

D. None of the above

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WiMAX MCQs

1: What is the full form of MPDU?

2: Which of the following are included in each data SA (Security Association)?

3: Which of the following multiplexing technologies is used in 802.16 for the downlink channel?

4: Which of the following management connections is used to send messages related to DHCP, SNMP, TFTP etc?

5: What is the maximum number of management connection pairs that can be created when a subscriber station (SS) first connects to a base station (BS)?

6: Which of the following FFT (Fast Fourier Transform) sizes are supported in SOFDMA (Scalable OFDMA)?

7: Which version of X.509 certificate is mandatory to be used in the 802.16 standard?

8: What can be the maximum value of the traffic encryption key (TEK) lifetime?

9: In which of the following topology modes can the 802.16 standard be used?

10: Which of the following are managed by the physical layer of the protocol stack in WiMAX?

11: In the subheader of a MAC frame, what will be the value of FC (fragment control) bits if it is the last fragment of the MSDU?

12: What is the length (size) of a connection identifier (CID)?

13: On which of the following frequency ranges does the first WiMAX standard (IEEE 802.16-2001) operate?

14: In OFDM the original signal is divided into how many subcarriers or subchannels?

15: How many hash-based message authentication code (HMAC) keys are derived from the authorization key (AK) for communication between the subscriber station (SS) and the base station (BS)?

16: Which of the following encryption algorithms are included in the 802.16 standard security sublayer?

17: Which of the following connections is used for short, time-urgent MAC management messages?

18: Which of the following multiplexing technologies is more spectrum-efficient and cost-efficient?

21: Which of the following multiplexing technologies are used in 802.16?

22: Which of the following are included in each authorization SA (Security Association)?

24: Which of the following are the different types of data SAs (Security Associations)?

25: How many different types of uplink scheduling mechanisms are used to control contention between users and to modify their bandwidth requirements in the point to multi-point mode?

26: Which of the following are the new power management operations defined in 802.16e?

27: Which of the following sub layers of IEEE 802.16 MAC layer provides functions related to duplexing, framing, QoS and channel access?

28: Which of the following are the two types of soft handovers defined in 802.16e?

29: Which of the following modulation technologies is/are supported by 802.16a?

30: How many types of security associations (SA) are defined in PKMv2 in the 802.16 standard?

31: What is the other name for WiMAX?

33: In VOIP, change in payload and code sizes of MPDUs sent by SS depends on which of the following?

34: Which of the following duplexing technologies does 802.16 support?

35: Which of the following certificates is used to allow the base station to identify the subscriber stations?

36: What is the length (size) of the key encryption (in bits) that the DES (data encryption standard) provides?

37: What is the length (in bits) of the header check sequence (HCS) field in a generic MAC header?

38: In the mobile WiMAX profiles, which of the following is mandatory?

39: What can be the maximum distance of a WiMAX connection?

40: Which of the following parameters are sent by the subscriber station (SS) in the ranging request packet (RNG-REQ) when a subscriber station (SS) wants a VOIP service stream from a base station (BS)?

41: What is the full form of WiMAX?

42: Which of the following is more secure and stronger for the encryption of data?

44: What is the default value of the authorization key (AK) lifetime?

45: Which of the following are true of the 48-bit Base Station ID (BSID)?

46: Which of the following is the new scheduling mechanism defined in 802.16e?

47: In the point to multi point (PMP) mode, which of the following controls both uplink and downlink scheduling?

48: What is the link from the Base Station to the Subscriber Station known as?

49: Which of the following is/are included in the subscriber station certificate?

50: On which of the following technologies is WiMax based upon?

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