Important I.T. Questions of the Days Ques. : 1 The United States is divided into many _______. 1) LECs 2) LATAs 3) IXCs 4) All the above 5) none of the above Ans.) 2 Ques. : 2 The carrier that handles intra-LATA services is called a(n) _____ . 1) POP 2) IXC 3) LEC 4) All the above 5) none of the above Ans.) 3 Ques. : 3 The carrier that handles inter-LATA services is called a(n) _______. 1) POP 2) IXC 3) LEC 4) all of the above 5) none of the above Ans.) 2 Ques. : 4 In ______signaling, the same circuit is used for both signaling and data. 1) in-band 2) out-of-band 3) mixed 4) All the above 5) none of the above Ans.) 1 Ques. : 5 . In ________signaling, a portion of the bandwidth is used for signaling and another portion for data. 1) in-band 2) out-of-band 3) mixed 4) All the above 5) none of the above Ans.) 2 Ques. : 6 In _____ coding, we divide our message into blocks, each of k bits, called ___. 1) block; blockwords 2) linear; datawords 3) block; datawords 4) All the above 5) none of the above Ans.) 3 Ques. : 7 We add r redundant bits to each block to make the length n = k + r. The resulting n-bit blocks are called _________. 1) datawords 2) blockwords 3) codewords 4) All the above 5) none of the above Ans.) 3 Ques. : 8 The ________ between two words is the number of differences between corresponding bits. 1) Hamming code 2) Hamming distance 3) Hamming rule 4) All the above 5) none of the above Ans.) 2 Ques. : 9 To guarantee the detection of up to 5 errors in all cases, the minimum Hamming distance in a block code must be _______. 1) 5 2) 6 3) 11 4) All the above 5) None of these Ans.) 2 Ques. : 10 To guarantee correction of up to 5 errors in all cases, the minimum Hamming distance in a block code must be ________. 1) 5 2) 6 3) 11 4) All the above 5) none of the above Ans.) 3 Ques. : 11 . ________ is a type of transmission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal. 1) Attenuation 2) Distortion 3) Noise 4) Decibel 5) None of these Ans.) 2 Ques. : 12 ________ is a type of transmission impairment in which an outside source such as crosstalk corrupts a signal. 1) Attenuation 2) Distortion 3) Noise 4) Decibel 5) None of these Ans.) 3 Ques. : 13 When propagation speed is multiplied by propagation time, we get the ________. 1) throughput 2) wavelength of the signal 3) distortion factor 4) distance a signal or bit has traveled 5) None of these Ans.) 4 Ques. : 14 Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A. 1) one-half 2) twice 3) the same as 4) indeterminate from 5) None of these Ans.) 2 Ques. : 15 A sine wave is ________. 1) periodic and continuous 2) aperiodic and continuous 3) periodic and discrete 4) aperiodic and discrete 5) None of these Ans.) 1 Ques. : 16 A ________ switch is a multistage switch with microswitches at each stage that route the packets based on the output port represented as a binary string. 1) crossbar 2) TSI 3) banyan 4) all of the above 5) none of the above Ans.) 3 Ques. : 17 In a banyan switch, for 8 inputs and 8 outputs, we have _____ stages. 1) 8 2) 4 3) 3 4) 2 5) None of these Ans.) 3 Ques. : 18 A ________ switch combines space-division and time-division technologies to take advantage of the best of both. 1) TST 2) SSS 3) TTT 4) all of the above 5) none of the above Ans.) 1 Ques. : 19 The most popular technology in time-division switching is called the _________. 1) STI 2) ITS 3) TSI 4) all of the above 5) none of the above Ans.) 3 Ques. : 20 Based on the Clos criteria, if N = 200, then n must be equal to or greater than ____. 1) 10 2) 20 3) 30 4) 40 5) None of these Ans.) 1 Ques. : 21 The largest portion of the bandwidth for ADSL carries _______. 1) voice communication 2) upstream data 3) downstream data 4) control data 5) none of these Ans.) 3 Ques. : 22 _______ was designed as an alternative to the T-1 line. 1) VDSL 2) ADSL 3) SDSL 4) HDSL 5) none of these Ans.) 4 Ques. : 23 HDSL encodes data using _______. 1) 4B/5B 2) 2B1Q 3) 1B2Q 4) 6B/8T 5) none of these Ans.) 2 Ques. : 24 Another name for the cable TV office is the _______. 1) splitter 2) fiber node 3) combiner 4) head end 5) none of these Ans.) 4 Ques. : 25 A traditional cable TV network transmits signals ______. 1) upstream 2) downstream 3) upstream and downstream 4) all of the above 5) none of the above Ans.) 2 Ques. : 26 What term is used to describe two or more computers that are linked to each other? 1) Star connection 2) Computer system 3) Computer network 4) Net 5) None of these Ans.) 3 Ques. : 27 What interface card do you need to connect to a network? 1) ISP card 2) Wireless card 3) Router 4) NIC 5) None of these Ans.) 4 Ques. : 28 Which of the following is not described as a typical network classification? 1) Local area network 2) Wide area network 3) Metropolitan area network 4) County area network 5) None of these Ans.) 4 Ques. : 29 What type of network device allows you to share your connection to the Internet with other computers in your home? 1) Ethernet card 2) NIC 3) Router 4) Cat 5 5) None of these Ans.) 3 Ques. : 30 What is another name for a shared network? 1) WAP 2) Switch 3) Broadband router 4) Hub 5) None of these Ans.) 4
Posted on: Sat, 08 Jun 2013 10:35:42 +0000
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