InterviewSolution

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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.	Timeliness is the period between production of information and its availability to the subscriber.(a) True(b) FalseThis question was posed to me in an internship interview.Query is from Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» CORRECT option is (a) True To elaborate: Timeliness is one of key parameters of military applications. Timeliness is the period between PRODUCTION of information and its availability to the subscriber. Process and queuing DELAYS increase the DURATION of this period.

2.	Which of the following is not a key parameter of information services in military application?(a) Quantity(b) Suitability(c) Multi-tenancy(d) Timeliness (QQT)The question was asked in examination.The query is from Architecture Evolution in division Architecture Evolution of Cognitive Radio
Answer» Right OPTION is (c) Multi-tenancy To EXPLAIN I would SAY: QUANTITY, quality, timeliness (QQT), and suitability are the KEY parameters of information services in military application.

3.	Military applications need __________ in addition to mobile subscriber sets.(a) fixed infrastructure(b) mobile infrastructure(c) partitioned infrastructure(d) parted infrastructureThe question was posed to me in class test.Question is from Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» Right answer is (B) mobile infrastructure Best explanation: Commercial applications are supported by fixed infrastructure such as cell PHONE TOWERS and BASE stations. However such facilities are not available for military APPLICATION. Thus, a mobile infrastructure is required.

4.	Which protocol is used to control Digital Modular Radio over Ethernet?(a) OSPF(b) SNMP(c) IPX(d) TELNETThis question was addressed to me in my homework.Enquiry is from Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» The correct option is (b) SNMP For EXPLANATION I would say: A DIGITAL Modular Radio has four channels with full duplex communication. It is controlled over an Ethernet interface which uses SIMPLE Network Management PROTOCOL (SNMP).

5.	Which was the first Software Defined Radio that included a programmable voice coder?(a) SPEAKeasy – 1(b) SPEAKeasy – 2(c) ICNIA(d) Cluster HMSThis question was addressed to me by my college professor while I was bunking the class.I'd like to ask this question from Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» CORRECT option is (B) SPEAKeasy – 2 The EXPLANATION is: SPEAKeasy – 2 was an appropriately sized radio with features such as PROGRAMMABLE voice coder, DSP resources to support different waveforms.

6.	______ has many single- purpose radios in one structure.(a) SPEAKeasy – 2(b) Modular multifunctional information transfer system (MMITS)(c) Integrated communications, navigation, and identification architecture (ICNIA)(d) Cluster HMSI got this question during a job interview.My query is from Architecture Evolution in portion Architecture Evolution of Cognitive Radio
Answer» The correct option is (c) Integrated communications, navigation, and identification ARCHITECTURE (ICNIA) The best explanation: ICNIA design consists of many single-PURPOSE radios in one structure. HOWEVER the MODERN Software Defined Radio behaves as a GENERAL purpose device generating different waveforms at different frequencies using the same radio tuner and processors.

7.	Which of the following is not a standard body that involves in inter networking?(a) ETSI(b) ITU(c) IEEE(d) VSOThis question was addressed to me in unit test.Question is taken from Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» The correct OPTION is (d) VSO To explain I would say: ITU, ISO, ETSI, ARIB, IEEE, TIA, and ANSI are the standard bodies overlooking inter NETWORKING. VSO is a standard body that monitors bus/backplane HARDWARE.

8.	Quantity is measured in terms of ________(a) BER(b) link availability(c) peak data rate(d) bandThis question was addressed to me by my college director while I was bunking the class.I'm obligated to ask this question of Architecture Evolution topic in division Architecture Evolution of Cognitive Radio
Answer» CORRECT option is (c) peak data rate Easy explanation: QUANTITY is measured in terms of two factors. One is the number of different communication MODE present in the software radio. The other is the peak and AVERAGE data RATES available to the subscribers.

9.	Which of the following does not extend from military application to commercial application?(a) Carrier Sense Multiple Access(b) Frequency Hopping(c) Direct Sequence Spread Spectrum(d) Emitter LocationThe question was posed to me by my school teacher while I was bunking the class.I want to ask this question from Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» The correct option is (a) CARRIER Sense MULTIPLE Access The best explanation: Frequency hopping, direct sequence spread spectrum, demand-assigned multiple access, variable data rates are some TECHNIQUES which have extend from military application to COMMERCIAL application.

10.	Which of the following is not an advanced requirement in terms of Software Defined Radio?(a) Adaptive networks(b) Adaptive diversity(c) Multiband(d) Innovation signalingThis question was addressed to me in quiz.The above asked question is from Architecture Evolution topic in division Architecture Evolution of Cognitive Radio
Answer» Right choice is (c) Multiband Best EXPLANATION: Adaptive networks, adaptive DIVERSITY, transparent bridging, CHANNEL modeling, innovation signaling are some advanced functional needs of SDR. These techniques can elevate the quality of voice, data and WIRELESS services.

11.	What does cost effectiveness mean in terms of military requirements?(a) Backward compatibility(b) Cheap replacement of existing radios(c) Futuristic design(d) Fast replacement of existing radiosThe question was asked during an online interview.My question is based upon Architecture Evolution topic in chapter Architecture Evolution of Cognitive Radio
Answer» CORRECT option is (a) Backward compatibility Best explanation: Cost effectiveness means the new design must be ABLE to communicate with previous versions of RADIOS. The design must be compatible with radios which are MEETING the end of their lifetime.

12.	Which of the following is not directed by Air Interface Standards?(a) Channel modulation(b) Interconnects(c) Frequency allocation(d) Access protocolsThe question was asked in semester exam.My enquiry is from Architecture Evolution topic in portion Architecture Evolution of Cognitive Radio
Answer» The correct choice is (b) Interconnects The best I can explain: Channel modulation, frequency ALLOCATION and access protocols are few AIR INTERFACE standards. They affect interoperability over the air.

13.	When was SDR forum found?(a) 1992(b) 1994(c) 1996(d) 1995This question was addressed to me in an online quiz.My enquiry is from Architecture Evolution in chapter Architecture Evolution of Cognitive Radio
Answer» Right choice is (c) 1996 The EXPLANATION is: The SDR FORUM was found in 1996 by WAYNE Bonser of AIR Force Rome Lab to develop industry standards for SDR hardware and software.