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1、S.6SpectrumALL-IN-ONEJournalforEngineeringStudents,2013CodeNo.:9A05602/R09B.Tech.IIIYearIISemesterRegularExaminationsSet-2April/May-2012SolutionsUNIXINTERNALS(ComputerScienceandEngineering)Time:3HoursMax.Marks:70AnsweranyFIVEQuestionsAllQuestionscarryequa
2、lmarks---1.(a)MentionthecharacteristicsoftheUNIXfilesystem.Drawandexplainthesamplefilesystemwithatreestructure.(Unit-I,TopicNo.1.2)(b)Drawandexplaintheblockdiagramforthesystemkernel.(Unit-I,TopicNo.1.5.1)2.Whatarethedifferentscenariosthatthekernelfollowsi
3、ngetblktoallocateabufferforadiskblock?Explainthemindetail.(Unit-II,TopicNo.2.3)3.(a)Writeshortnotesonthestructureofaregularfile.(Unit-III,TopicNo.3.2)(b)Writeandexplainanalgorithmforallocationofin-coreinodes.(Unit-III,TopicNo.3.1)4.(a)Discussindetailabout
4、thewritesystemcall.(Unit-IV,TopicNo.4.1)(b)Givebriefdescriptionaboutmountingthefilesystem.(Unit-IV,TopicNo.4.11)5.(a)PresentadetailnoteontheUareaofaprocess.(Unit-V,TopicNo.5.1)(b)Explainindetailabouttheinterruptsandexceptionsofaprocess.(Unit-V,TopicNo.5.1
5、)6.(a)Howcanwechangethesizeofaprocess?Explainitindetail.(Unit-VI,TopicNo.6.7)(b)Describeanimplementationofthekillsystemcall.(Unit-VI,TopicNo.6.2)7.(a)Explainthevarioussystemcallsfortime.(Unit-VII,TopicNo.7.2)(b)Explainhowtocontroltheprocessprioritieswiths
6、uitableexamples.(Unit-VII,TopicNo.7.1)8.(a)Explaintheterminaldriversusingtherawmode.(Unit-VIII,TopicNo.8.3)(b)Writeapseudocodeformultiplexingwindows.(Unit-VIII,TopicNo.8.3)B.Tech.III-YearII-Sem.(JNTU-Anantapur)UnixInternals(April/May-2012,Set-2)JNTU-Anant
7、apurS.7SOLUTIONSTOAPRIL/MAY-2012,SET-2,QPQ1.(a)MentionthecharacteristicsoftheUNIX(b)Explainindetailabouttheinterruptsfilesystem.Drawandexplaintheandexceptionsofaprocess.samplefilesystemwithatreestructure.Answer:April/May-12,Set-2,Q5(b)Answer:April/May-12,
8、Set-2,Q1(a)Ingeneral,aninterruptcanbedefinedasaneventForanswerreferUnit-I,Q3,Topic:FeaturesofUnixthatchangesthesequenceofinstructionsintheexecutionFileSystemandUnixFileStructure.ofaprocessor.Interruptsareclassifiedi