Description : The original IEEE 802.11,uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : either (a)or (b)
Description : 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
Last Answer : c) DSSS IEEE 802.11b
Description : The IEEE 802.11g, uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : OFDM
Description : The IEEE 802.11b, uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : DSSS
Description : The IEEE 802.11a, uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Description : 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
Last Answer : d) IEEE 802.11b
Description : 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
Last Answer : c) IEEE 802.11
Description : Which of the following standard committee specifies Bluetooth and other Personal Area Networks (PAN)? a) IEEE 802.11b b) IEEE 802.15 c) IEEE 802.11g d) IEEE 802.16
Last Answer : b) IEEE 802.15
Description : Which of the following is not a standard of WLAN? a) HIPER-LAN b) HIPERLAN/2 c) IEEE 802.11b d) AMPS
Last Answer : d) AMPS
Description : 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
Last Answer : d) IEEE 802.11g
Description : The ______ technique expands the bandwidthof a signal by replacing each data bit with n bits. A) FDM B) DSSS C) FHSS D) TDM
Description : Which multiple access technique is used by IEEE 802.11 standard for wireless LAN? a. ALOHA b. CSMA/CA c. CDMA d. none of the mentioned
Last Answer : b. CSMA/CA
Description : Which of the following scheme is used by Bluetooth? a) Frequency hopping TDD scheme b) Frequency hopping FDD scheme c) DSSS TDD scheme d) DSSS FDD scheme
Last Answer : a) Frequency hopping TDD scheme
Description : The original IEEE 802.11,has a data rate of _____Mbps. A) 1 B) 6 C) 11 D) 22
Last Answer : 1
Description : _____ is used for transmission of packets in the cellular switched architecture. a) Packet switching techniques b) Circuit switching techniques c) Packet and circuit switched technique d) Datagram technique
Last Answer : a) Packet switching techniques
Description : Bluetooth uses ______method in thephysical layer to avoid interference from other devicesor othernetworks. A) DSSS B) FHSS C) FDMA D) none of the above
Last Answer : FHSS
Description : _____________ is a collection of wired Ethernet standard for the link layer. A. IEEE 802.3 B. IEEE 802.11 C. IEEE 802.16 D. IEEE 802.15.4
Last Answer : A. IEEE 802.3
Description : Explain direct sequence spread spectrum (DSSS) transmitter with block diagram.
Last Answer : In direct sequence, the serial binary data is mixed with a higher frequency pseudorandom binary code at a faster rate and the result is used to phase-modulate a carrier. The ... 1010 with odd parity. le of spread spectrum modulation and demodulation using PSK for primary modulation.
Description : The advantage of following the IEEE Standard for drawing up a Project Management Plan (SPMP) - see IEEE Standard 1059.1 1987 - is a) It is drawn up by representatives from major ... each organisation for a particular applicationarea, development team or technique. e) All of the above.
Last Answer : e) All of the above.
Description : How is bandwidth increased in Cdma2000? a) Clubbing adjacent radio channels b) Changing the hardware of base stations c) Change of spectrum d) Change of RF equipment
Last Answer : a) Clubbing adjacent radio channels
Description : What is the minimum spectrum allocation required by W-CDMA? a) 5 MHz b) 20MHz c) 1.25 MHz d) 200 KHz
Last Answer : a) 5 MHz
Description : 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
Last Answer : a) UNII
Description : WLANs use high power levels and generally require a license for spectrum use. a) True b) False
Last Answer : b) False
Description : The IEEE 802.11 wireless LANs use ________ types of frames. A) four B) five C) six D) none of the above
Last Answer : none of the above
Description : IEEE 802.11g, has a datarate of _____Mbps. A) 1 B) 2 C) 11 D) 22
Last Answer : 22
Description : . In IEEE 802.11, the addressing mechanism can include upto ______addresses. A) four B) five C) six D) none of the above
Description : In IEEE 802.11, the MAC layer framehas ______ fields. A) four B) five C) six D) none of the above
Last Answer : four
Description : In IEEE 802.11, the ______ is a timerused for collision avoidance. A) NAV B) BSS C) ESS D) none of the above
Last Answer : NAV
Description : In IEEE 802.11, the access method used in the PCF sublayer is ______. A) contention B) controlled C) polling D) none of the above
Last Answer : polling
Description : In IEEE 802.11, the access method used in the DCF sublayer is _________. A) ALOHA B) CSMA/CA C) CSMA/CD D) none of the above
Last Answer : CSMA/CA
Description : In IEEE 802.11, when a frame isgoingfrom one AP to another AP in a wireless distribution system, the address flag is_____ A) 00 B) 01 C) 10 D) 11
Last Answer : 11
Description : In IEEE 802.11, when a frame isgoingfrom a station to an AP, theaddress flag is _____. A) 00 B) 01 C) 10 D) 11
Last Answer : 10
Description : In IEEE 802.11, when a frame is coming from an AP and going to astation, the address flag is _______. A) 00 B) 01 C) 10 D) 11
Last Answer : 01
Description : In IEEE 802.11, when a frame isgoingfrom one station in a BSS toanother without passing through thedistribution system, the address flag is _____ A) 00 B) 01 C) 10 D) 11
Last Answer : 00
Description : In IEEE 802.11, _______ isan optionalaccess method that can be implemented inan infrastructure network (not in an ad hocnetwork). A) DCF B) PCF C) either (a) or (b) D) neither (a) nor (b)
Last Answer : PCF
Description : In IEEE 802.11, astation with ________ mobility can move from one ESS toanother. A) no-transition B) BSS-transition C) ESS-transition D) none of the above
Last Answer : ESS-transition
Description : In IEEE 802.11, astation with ________mobility can move from one BSS toanother, but the movement is confined inside one ESS. A) no-transition B) BSS-transition C) ESS-transition D) none of the above
Last Answer : no-transition
Description : In IEEE 802.11, astation with ________ mobility iseither stationary (not moving) or moving only insidea BSS. A) no-transition B) BSS-transition C) ESS-transition D) none of the above
Description : . In IEEE 802.11, communication between two stations in twodifferent BSSs usually occurs viatwo ________. A) BSSs B) ESSs C) APs D) none of the above
Last Answer : APs
Description : In IEEE 802.11, a BSS with an AP is sometimes referred toas ____________. A) an ad hocarchitecture B) an infrastructurenetwork C) either (a) or (b) D) neither (a) nor (b)
Last Answer : an infrastructurenetwork
Description : In IEEE 802.11, a BSS without an AP is called an _________. A) an ad hocarchitecture B) an infrastructurenetwork C) either (a) or (b) D) neither (a) nor (b)
Last Answer : an ad hocarchitecture
Description : In IEEE 802.11, a___ is made of stationary or mobile wireless stations and anoptional central base station, known as the access point (AP). A) ESS B) BSS C) CSS D) none of the above
Last Answer : BSS
Description : IEEE hasdefined the specifications fora wireless LAN, called _______, whichcovers the physical and data link layers. A) IEEE 802.3 B) IEEE 802.5 C) IEEE 802.11 D) IEEE 802.2
Last Answer : IEEE 802.11
Description : Match the following IEEE No to their corresponding Name for IEEE 802 standards for LANs. i) 802.3 a) WiFi ii) 802.11 b) WiMa iii) 802.15.1 c) Ethernet iv) 802.16 d) Bluetooth a. i-b, ii-c, iii-d, iv-a b. i-c, ii-d, iii-a, iv-b c. i-c, ii-a, iii-d, iv-b d. i-b, ii-d, iii-c, iv-a
Last Answer : c. i-c, ii-a, iii-d, iv-b
Description : Which of the following statements is TRUE about CSMA/CD a. IEEE 802.11 wireless LAN runs CSMA/CD protocol b. Ethernet is not based on CSMA/CD protocol c. CSMA/CD is not suitable for a high propagation delay network like satellite network d. There is no contention in a CSMA/CD network
Last Answer : CSMA/CD is not suitable for a high propagation delay
Description : Match the following IEEE No to their corresponding Name for IEEE 802 standards for LANs. i) 802.3 a) WiFi ii) 802.11 b) WiMa iii) 802.15.1 c) Ethernet iv) 802.16 d) Bluetooth A) i-b, ii-c, iii-d, iv-a B) i-c, ii-d, iii-a, iv-b C) i-c, ii-a, iii-d, iv-b D) i-b, ii-d, iii-c, iv-a
Last Answer : C) i-c, ii-a, iii-d, iv-b
Description : Which IEEE standards specify the technologies for wireless LANs 802.11 a. IEEE 802.11 b. IEEE 802.10 c. IEEE 279.6 d. IEEE 275.4
Last Answer : a. IEEE 802.11
Description : IEEE 802.11 standards provide data rates ______________ A. 10 Gbit/s. B. 1 Gbit/s C. 1 Mb/s to up to 6.75 Gb/s D. 250 Kb/s
Last Answer : C. 1 Mb/s to up to 6.75 Gb/s
Description : __ is a collection of standards for LR-WPANs. A. IEEE 802.3 B. IEEE 802.11 C. IEEE 802.16 D. IEEE 802.15.4
Last Answer : D. IEEE 802.15.4