MCQ UNIT 3-4 wcom ipu PDF

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mcq for unit 1 and 2 for IPU online exams...

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MCQ UNIT 3-4 Set of MCQs (Multiple Choice Questions & Answers) with Answers on 2.5G 1. What is the name of the web browsing format language supported by 2.5G technology? a) Wireless Application Protocol b) Hypertext Markup Language c) Extensible Markup Language d) Hypertext Transfer Protocol 2. What is the name of the internet microbrowser technology used by NTT DoCoMo in Japan? a) Wireless Application Protocol b) I-mode c).W-mode d) Hypertext Markup Language 3. 2.5G upgrade path for a particular wireless carrier does not match the original 2G technology choice made earlier by the same carrier. a) True b) False 4. Which of the following is not a TDMA standard of 2.5G network? a) HSCSD b) GPRS c) EDGE d) GSM 5. Which of the following is a 2.5G CDMA standard? a) IS-95 b) Cdma2000 c) IS-95B d) CdmaOne 6. HSCSD supports which 2G standard? a) GSM b) IS-136 c) GSM and IS-136 d) PDC 7. How does HSCSD differs from the GSM to obtain higher speed data rate? a) By allowing single user to use one specific time slot b) By allowing single user to use consecutive user time slots c) By using 8-PSK modulation technique d) By allowing multiple users to use individual time slot 8. GPRS and EDGE supports which 2G standard? a) GSM only b) IS-136 only c) GSM and IS-136 both d) PDC

9. How is HSCSD different from GPRS? a) Infrastructure b) Multiple Access Scheme c) Modulation technique d) Switching Technique 10. What changes GPRS need to acquire while upgrading itself from GSM? a) A whole new base station b) New transceiver at base station c) New channel cards d) New packet overlay including routers and gateways 11. Which new modulation technique is used by EDGE? a) BPSK b) 8- PSK c) DQPSK d) AFSK 12. Various air interface formats used by EDGE are also known as ___________ a) Modulation and coding schemes b) Coding schemes c) Modulating air interface d) Air interface coding schemes 13. EDGE is sometimes also referred as ____________ a) HSCSD b) 3GPP c) EGPRS d) EGSCSD 14. What is one disadvantage of EDGE in comparison to HSCSD and GPRS? a) Low data rates b) Small coverage range c) Low speed d) No advancement

1) GPRS stands for? A) General Packet Repair Service B) General Packet Radio Service C) Graphics Packet Radio Service D) None Answer [=]

B 2) What is the data rate or speed offered by a GPRS connection? A) 56-115kbps B) 9-256kbps C) 64-128kbps D) None

Answer [=]

A Explanation: 115kbps is the maximum. Minimum can be anything in reality based on many parameters. 3) GPRS services belong to which generation? A) 1G B) 2G C) 3G D) 4G Answer [=]

B 4) Choose a correct abbreviation below. A) SGSN - Serving GPRS Support Node B) GGSN - Gateway GPRS Support Node C) IP - Internet Protocol D) All Answer [=]

D 5) Choose a correct Abbreviation below. A) PCU - Packet Control Unit B) CG - Charging Gateway C) BG - Border Gateway D) All Answer [=]

D 6) Choose a correct Abbreviation below. A) PCU - Packet Control Unit B) CCU - Channel Codec Unit C) GTP - GPRS Tunneling Protocol D) All Answer [=]

D 7) GPRS is a Connection Oriented service. True/False? A) False B) True C) -

D) Answer [=]

A Explanation: GPRS is a connection less service. It is a Packet data service. No continuous connection from Start to End is required. 8) GPRS is a Circuit Switched Data (CSD) service. True/False? A) False B) True C) D) Answer [=]

A Explanation: No, GPRS is a PSD device. P is for Packet.

9) GPRS uses which unused channels for transportation of Data in general? A) SDCCH B) BCCH C) TCH D) SCH Answer [=]

C Explanation: Yes, TCH (Traffic Channel).

10) Type-A Mobile Station supports ________. A) Only Speech B) Only Data C) Speech and Data Simultaneously D) Speech or Data one at a time. Answer [=]

C

11) Type-B Mobile Station supports _______. A) Speech only B) GPRS only C) GPRS or Speech One at a time D) GPRS and Speech simultaneously Answer [=]

C

12) Type-C Mobile Station supports _______. A) Speech only

B) Data only C) Speech and Data simultaneously D) Speech or Data automatically Answer [=]

B Explanation: Data Dongles.

13) What is the abbreviation of EDGE? A) Enhanced Digital Generation Gap B) Enhanced Data rate for GSM Evolution C) Encryption Data rate for GSM Evolution D) None Answer [=]

B

14) What is the maximum speed offered by an EDGE connection? A) 64kbps B) 128kbps C) 256kbps D) 236 kbps Answer [=]

D 15) An EDGE connection is ______? A) CS data B) PS data C) CS and PS data D) None Answer [=]

C Explanation: CS - Circuit Switched PS - Packet Switched 16) A PCU separates Packet Switched and Circuit Switched traffic and passes PSD to _______? A) MSS B) SGSN C) GGSN D) None Answer [=]

B

17) In a GPRS network, SGSN is the equivalent of ______ system in GSM. A) BSC B) MSC C) VLR D) GMSC Answer [=]

B 18) What are the functions of a CCU? A) Power Control B) Timing Advance C) Coding algorithms D) All Answer [=]

D 19) GPRS Roaming from one SGSN to another SGSN is offered by ? A) GMSC B) GGSN C) HLR D) VLR Answer [=]

B Explanation: GGSN queries the subscriber location time to time and sends data the respective SGSN and then to the user. 20) Which is the system in GPRS that connects to External Networks using GTP? A) SGSN B) HLR C) GGSN D) GMSC Answer [=]

C 21) What are the functions of SGSN in a GPRS Architecture? A) Authentication, Authorization, Ciphering

B) GTP tunneling to GGSN, Charging (Billing), Session management C) Mobility manage, interaction with HLR, MSC/VLR, NMS interface D) All Answer [=]

D

22) What are the functions of GGSN of a GPRS network? A) Charging (Billing), Filter user traffic B) Routing mobile originated traffic, GTP Tunneling to SGSN C) Interface external networks D) All Answer [=]

D 23) A DNS (Domain Name Server) converts Host Name or Website name to _____? A) Packets B) Bytes C) IP address D) None Answer [=]

C 24) A BG(Border Gateway) connects to ______ using Tunneling. A) Same operator's GPRS network B) Different operator's GPRS network C) Same or different operator GPRS N/W D) None Answer [=]

B 25) Which system in a GPRS architecture collects all Charging (Billing) records for final processing? A) SGSN B) GGSN C) CH (Charging Gateway) D) None Answer [=]

C 26) A GPRS network contains Firewalls to _______? A) Hack phones B) Intercept phones C) Protection from Virus D) None Answer [=]

C 27) An LIG(Legal Interception Gateway) in a GPRS network provides ________ . A) Parallel access to law agencies B) Eavesdrop user sessions C) Sample packets to get information D) All Answer [=]

D

11.

Which layer is responsible for fragmentation and encryption in 802.11 WLAN? (a) MAC (b) PLCP (c) LLC (d) PMD Answer:

Option (a) 12.

Which layer is responsible for modulation in 802.11 WLAN? (a) MAC (b) PLCP (c) LLC (d) PMD

Answer:

Option (d) 13.

Which layer is responsible for carrier sensing in 802.11 WLAN? (a) MAC (b) PLCP (c) LLC (d) PMD Answer:

Option (b) 14.

Which layer is responsible for delivering frames incoming from the wireless medium in 802.11 WLAN? (a) MAC (b) PLCP (c) LLC (d) PMD Answer:

Option (b) 15.

______ protocol was designed to protect users of a WLAN from casual eavesdropping. (a) WEP (b) WAP (c) WAP2 (d) RC4 Answer:

Option (a)

16.

Select the correct option for the ad-hoc network. (a) No need for Access Point (b) Access Point is mandatory (c) All nodes act as access points (d) It is a centralized network arrangement Answer:

Option (a) 17.

Which channel is default for commercial routers? (a) Channel 2 (b) Channel 3 (c) Channel 6 (d) Channel 7 Answer:

Option (c) 18.

TKIP is used by _____wireless protocol. (a) WEP (b) WPA (c) WPA2 (d) WPS Answer:

Option (b) 19.

2.4GHz frquency band has______ channels. (a) 10

(b) 12 (c) 13 (d) 15 Answer:

Option (c) MCQ BASED ON WLAN

1. What is the full form of WLAN? a) Wide Local Area Network b) Wireless Local Area Network c) Wireless Land Access Network d) Wireless Local Area Node View Answer Answer: b Explanation: WLAN stands for Wireless Local Area Network. Wireless networks is increasingly used as a replacement for wires within homes, buildings, and office settings through the deployment of wireless local area networks (WLANs). 2. WLANs use high power levels and generally require a license for spectrum use. a) True b) False View Answer Answer: b Explanation: WLANs use low power and generally do not require a license for spectrum. They provide ad hoc high data transmission rate connections deployed by individuals. In the late 1980s, FCC provided licence free bands for low power spread spectrum devices in ISM band, which is used by WLAN. 3. What is the name of 300 MHz of unlicensed spectrum allocated by FCC in ISM band? a) UNII b) Unlicensed PCS c) Millimetre wave d) Bluetooth View Answer Answer: a Explanation: FCC allocated 300 MHz of unlicensed spectrum in the ISM bands. This allocation is called the Unlicensed National Information Infrastructure (UNII) band. It was allocated for the express purpose of supporting low power license free spread spectrum data communication. 4. Which of the following specifies a set of media access control (MAC) and physical layer specifications for implementing WLANs?

a) IEEE 802.16 b) IEEE 802.3 c) IEEE 802.11 d) IEEE 802.15 View Answer Answer: c Explanation: IEEE 802.11 is a set of media access control and physical layer specification for implementing WLAN computer communication. It was founded in 1987 to begin standardization of spread spectrum WLANs for use in the ISM bands. 5. Which of the following is not a standard of WLAN? a) HIPER-LAN b) HIPERLAN/2 c) IEEE 802.11b d) AMPS View Answer Answer: d Explanation: AMPS is a standard of first generation network. HIPERLAN is a WLAN standard developed in Europe in mid 1990s. HIPERLAN/2 is also developed in Europe that provides upto 54 Mbps of user data. Subscribe Wireless and Mobile Communication Newsletter 6. Which of the following is the 802.11 High Rate Standard? a) IEEE 802.15 b) IEEE 802.15.4 c) IEEE 802.11g d) IEEE 802.11b View Answer Answer: d Explanation: IEEE 802.11b was a high rate standard approved in 1999. It provided new data rate capabilities of 11 Mbps, 5.5 Mbps in addition to the original 2 Mbps and 1 Mbps user rates of IEEE 802.11. 7. Which of the following spread spectrum techniques were used in the original IEEE 802.11 standard? a) FHSS and DSSS b) THSS and FHSS c) THSS and DSSS d) Hybrid technique View Answer Answer: a Explanation: Original IEEE 802.11 used both the approaches of FHSS (Frequency Hopping Spread Spectrum) and DSSS (Direct Sequence Spread Spectrum). But from late 2001s, only DSSS modems are used within IEEE 802.11. 8. Which of the following WLAN standard has been named Wi-Fi? a) IEEE 802.6 b) IEEE 802.15.4 c) DSSS IEEE 802.11b

d) IEEE 802.11g View Answer Answer: c Explanation: The DSSS IEEE 802.11b standard has been named Wi-Fi by the Wireless Ethernet Compatibility Alliance. It is a group that promotes adoption of 802.11 DSSS WLAN. 9. Which of the following is developing CCK-OFDM? a) IEEE 802.11a b) IEEE 802.11b c) IEEE 802.15.4 d) IEEE 802.11g View Answer Answer: d Explanation: IEEE 802.11g is developing CCK-OFDM (Complementary Code Keying Orthogonal Frequency Division Multiplexing) standards. It will support roaming capabilities and dual band use for public WLAN networks. It also has backward compatibility with 802.11b technologies. 10. What is the data rate of HomeRF 2.0? a) 10 Mbps b) 54 Mbps c) 200 Mbps d) 1 Mbps View Answer Answer: a Explanation: HomeRF 2.0 has data rate of the order of 10 Mbps. The FHSS proponents of IEEE 802.11 have formed the HomeRF standard that supports the frequency hopping equipment. In 2001, HomeRF developed a 10 Mbps FHSS standard called HomeRF 2.0. 11. HIPER-LAN stands for ____________ a) High Precision Radio Local Area Network b) High Performance Radio Local Area Network c) High Precision Radio Land Area Network d) Huge Performance Radio Link Access Node View Answer Answer: b Explanation: HIPER-LAN stands for High Performance Radio Local Area Network. It was developed in Europe in mid 1990s. It was intended to provide individual wireless LANs for computer communication. 12. What is the range of asynchronous user data rates provided by HIPERLAN? a) 1-100 Mbps b) 50-100 Mbps c) 1-20 Mbps d) 500 Mbps to 1 Gbps View Answer Answer: c Explanation: HIPER-LAN provides asynchronous user data rates of between 1 to 20 Mbps, as well as time bounded messaging of rates of 64 kbps to 2.048 Mbps. It uses 5.2 GHz and 17.1 GHz frequency bands.

13. What is the name of the European WLAN standard that provides user data rate upto 54 Mbps? a) UNII b) WISP c) MMAC d) HIPERLAN/2 View Answer Answer: d Explanation: HIPERLAN/2 has emerged as the next generation European WLAN standard. It provides upto 54 Mbps of user data to a variety of networks. The networks includes the ATM backbone, IP based networks and the UMTS network. 14. What is WISP? a) Wideband Internet Service Protocol b) Wireless Internet Service Provider c) Wireless Instantaneous Source Provider d) Wideband Internet Source Protocol View Answer Answer: b Explanation: WISP is wireless Internet Service Provider used to explore public LANs (publican). It builds a nationwide infrastructure of WLAN access points in selected hotels, restaurants or airports. It then charges a monthly subscription fee to users who wish to have always on Internet access in those selected locations. 15. The price of WLAN hardware is more than 3G telephones and fixed wireless equipment. a) True b) False View Answer Answer: b Explanation: As, WLAN could be used to provide access for the last 100 meters into homes and businesses. Therefore, the price of WLAN hardware is far below 3G telephones and fixed wireless equipment.

This set of Wireless & Mobile Communications Multiple Choice Questions & Answers (MCQs) focuses on “Third Generation (3G) Wireless Networks”.

1. Which of the following is not a characteristic of 3G network? a) Communication over VoIP b) Unparalleled network capacity c) Multi-megabit Internet access d) LTE based network View Answer Answer: d Explanation: Multi-megabit Internet access, communication using Voice over internet Protocol (VoIP), voice activated calls, unparalleled network capacity

are some of the characteristics of 3G network. 3G systems promise unparalleled wireless access which is not possible in 2G systems. LTE (Long term Evolution) is a standard of 4G systems. 2. What is the term used by ITU for a set of global standards of 3G systems? a) IMT 2000 b) GSM c) CDMA d) EDGE View Answer Answer: a Explanation: International Telecommunications Union (ITU) used the term IMT2000 in 1998. It is used for a set of global standards for third generation (3G) mobile telecoms services and equipment. 3. Which of the following leads to evolution of 3G networks in CDMA systems? a) IS-95 b) IS-95B c) CdmaOne d) Cdma2000 View Answer Answer: d Explanation: 3G evolution of CDMA system leads to cdma2000. It is based on the fundamentals of IS-95 and IS-95B. IS-95 is a 2G standard for CDMA systems. IS-95B is a CDMA system for 2.5G networks. 4. Which of the following leads to the 3G evolution of GSM, IS-136 and PDC systems? a) W-CDMA b) GPRS c) EDGE d) HSCSD View Answer Answer: a Explanation: The 3G evolution for GSM, IS-136 and PDC systems leads to WCDMA (Wideband CDMA). It is based on the network fundamentals of GSM, as well as merged versions of GSM and IS-136 through EDGE. GPRS, EDGE and HSCSD are 2.5G networks. 5. What is 3GPP? a) Project based on W-CDMA b) Project based on cdma2000 c) Project based on 2G standards d) Project based on 2.5G standards View Answer Answer: a Explanation: 3GPP is a 3G Partnership Project for Wideband CDMA standards based on backward compatibility with GSM and IS-136. The project was established in December 1998. Its initial scope was to make a globally applicable third generation mobile phone system. Subscribe Wireless and Mobile Communication Newsletter

6. What is 3GPP2? a) Project based on W-CDMA b) Project based on cdma2000 c) Project based on 2G standards d) Project based on 2.5G standards View Answer Answer: b Explanation: 3GPP2 is a 3G Partnership Project for Cdma2000 standards based on backward compatibility with earlier CdmaOne 2G CDMA technology. It was initiated by IMT-2000 to cover high speed, broadband and Internet Protocol (IP) based mobile systems. It mainly focuses on North American and Asian regions. 7. Which of the following is not a standard of 3G? a) UMTS b) Cdma2000 c) TD-SCDMA d) LTE View Answer Answer: d Explanation: UMTS (Universal Mobile Telecommunication System), TD-SCDMA (Time Division Synchronous Code Division Multiple Access), Cdma2000 are the standards defined for 3G networks. LTE (Long Term Evolution) is a 4G standard for high speed wireless communication. 8. Which of the following 3G standard is used in Japan? a) Cdma2000 b) TD-SCDMA c) UMTS d) UTRA View Answer Answer: c Explanation: Japan uses UMTS (W-CDMA) standard for its 3G network. The standards used are UMTS 800, UMTS 900, UMTS 1500, UMTS 1700 and UMTS 2100. They are standardized by ARIB (Association of Radio industries and Business). 9. What does the number 2000 in IMT-2000 signifies? a) Year b) Number of subscribers per cell c) Number of cells d) Area (Km) View Answer Answer: a Explanation: The International Telecommunication Union (ITU) defined the third generation (3G) of mobile telephony standards, IMT-2000 to facilitate growth, increase bandwidth, and support more diverse applications. The number 2000 in IMT-2000 indicates the start of the system (year 2000) and the spectrum used (around 2000 MHz). 10. Which of the following is not an application of third generation network? a) Global Positioning System (GPS) b) Video conferencing

c) Mobile TV d) Downloading rate upto 1 Gbps View Answer Answer: d Explanation: 3G applications include GPS (Global Positioning System), MMS (Multimedia Messaging System), video conferencing, location based services, video on demand, wireless voice telephony and high data rates with peak downloading rate of 100 Mbps. For 4G networks, the peak downloading rate is 1 Gbps.

1. Which of the following is not a characteristic of 3G network? a) Communication over VoIP b) Unparalleled network capacity c) Multi-megabit Internet access d) LTE based network 2. 2. What is the term used by ITU for a set of global standards of 3G systems? a) IMT 2000 b) GSM c) CDMA d) EDGE 3. 3. Which of the following leads to evolution of 3G networks in CDMA systems? a) IS-95 b) IS-95B c) CdmaOne d) Cdma2000 4. 4. Which of the following leads to the 3G evolution of GSM, IS-136 and PDC systems? a) W-CDMA b) GPRS c) EDGE d) HSCSD 5. 5. What is 3GPP? a) Project based on W-CDMA b) Project based on cdma2000 c) Project based on 2G standards d) Project based on 2.5G standards 6. 6. What is 3GPP2? a) Project based on W-CDMA b) Project based on cdma2000 c) Project based on 2G standards d) Project based on 2.5G standards 7. 7. Which of the following is not a standard of 3G? a) UMTS b) Cdma2000 c) TD-SCDMA d) LTE 8. 8. Which of the following 3G standard is used in Japan? a) Cdma2000 b) TD-SCDMA c) UMTS d) UTRA 9. 9. What does the number 2000 in IMT-2000 signifies? a) Year

b) Number of subscribers per cell c) Number of cells d) Area (Km) 10.10. Which of the following is not an application of third generation network? a) Global Positioning System (GPS) b) Video conferencing c) Mobile TV d) Downloading rate upto 1 Gbps

This set of Wireless & Mobile Communications Multiple Choice Questions & Answers (MCQs) focuses on “4G Network Architecture”. 1. Which ty...