Description : What organization has published safety guidelines for the maximum limits of RF energy near the human body? A. The American National Standards Institute (ANSI). B. The Environmental Protection ... Communications Commission (FCC). D. The Institute Of Electrical and Electronics Engineers (IEEE).
Last Answer : A. The American National Standards Institute (ANSI).
Description : The Federal Communications Commission (FCC) allows ______ kHz for each FM station. A) 20 B) 100 C) 200 D) none of the above
Last Answer : 100
Description : The Federal Communications Commission (FCC) allows ______kHz for each AM station. A) 5 B) 10 C) 20 D) none of the above
Last Answer : 0
Description : The document standards for EDI were first developed by large business house during the 1970s and are now under the control of the following standard organisation: (A) ISO (B) ANSI (C) ITU-T (D) IEEE
Last Answer : (B) ANSI
Description : Which of the following organisations looks at standard for representation of data on the internet ? 1) ISOC 2) W3C 3) IEEE 4) IETE
Last Answer : 2) W3C
Description : Which of the following organisations looks at standard for representation of data on the internet ? 1 ISOC 2 W3C 3 IEEE 4 IETE
Last Answer : 2 W3C
Description : ______ isa standard developed by ITU-T. A) SONET B) SDH C) either (a) or (b) D) neither (a) nor (b)
Last Answer : either (a) or (b)
Description : ______ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T. A) X.25 B) Frame Relay C) ATM D) none of the above
Last Answer : ATM
Description : IEEE 802.3ab defines Gigabit Ethernet transmission over unshielded twisted pair (UTP) category 5, 5e or 6 cabling known as .................... a. 1000 BASE-T b. 1000 BASE-SX c. 1000 BASE-LX d. 1000 BASE-CX
Last Answer : a. 1000 BASE-T
Description : Who developed standards for the OSI reference model? a. ISO - International Standards Organization b. ANSI - American National Standards Institute c. IEEE - Institute of Electrical and Electronics Engineers d. ACM - Association for Computing Machinery
Last Answer : a. ISO - International Standards Organization
Description : What power did the Interstate Commerce Commission (ICC) have over railroad operations?
Last Answer : The ICC could make railroads submit their records toCongress.
Description : What is the difference between the Ethernet frame preamble field and the IEEE 802.3 preamble and start of frame Delimiter fields? a. 1 byte b. 1 bit c. 4 bit d. 16 bit
Last Answer : a. 1 byte
Description : What difficulties were involve with interstate commerce?
Last Answer : Trade laws differed from state to state as a result of statesfollowing their own interests, making trade difficult for thosewhose businesses crossed state lines.
Description : What interstate commerce act forced all railroads and steamships to charge the same?
Last Answer : What is the answer ?
Description : If the FCC had given the license to CB Operators, instead of cellphones, how would this have effected communications as we now know it?
Last Answer : How would that have worked? CB is transceiver to transceiver, and cell/mobile is transceiver to tower and backhaul with a backbone wired network.
Description : Binary communications systems are better because A. they can interface directly with the analog telephone network B. the components are simpler, less costly, and more reliable C. people think better in binary D. interstate calls are less costly
Last Answer : B. the components are simpler, less costly, and more reliable
Description : Which agency developed standards forphysical connection interfaces and electronic signalingspecifications? A) EIA B) ITU-T C) ANSI D) ISO
Last Answer : EIA
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 : IEEE 802.11b, has a datarate of _____Mbps. A) 1 B) 2 C) 5.5 D) none of the above
Last Answer : 5.5
Description : The original IEEE 802.11,has a data rate of _____Mbps. A) 1 B) 6 C) 11 D) 22
Last Answer : 1
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 : The original IEEE 802.11,uses _________. A) FHSS B) DSSS C) OFDM D) either (a)or (b)
Last Answer : either (a)or (b)
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 : The IEEE 802.11standardfor wireless LANs defines twoservices: ______and_______. A) BSS; ASS B) ESS; SSS C) BSS; ESS D) BSS; DCF
Last Answer : BSS; ESS
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 : The IEEE 802.3 Standard defines _________ CSMA/CD as the access method for first-generation 10-Mbps Ethernet. A) 1-persistent B) p-persistent C) non-persistent D) none of the above
Last Answer : 1-persistent
Description : IEEE 802.1d specification, defines _________criteria for a transparent bridges. A) two B) three C) four D) none of the above
Last Answer : three
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 : Who developed standards for the OSI reference model? A. ISO B. ANSI C. IEEE D. ACM
Last Answer : A. ISO
Description : And ITU-T specification code that deals with the telephone circuits. A. X series B. T series C. V series D. I series
Last Answer : C. V series