Osmania University (OU) 2006-2nd Sem B.E Electronics & Tele-Communication Engineering 4/4 (E.C.E)(ESTER)SUPPLEMENTARY ,IL, Design of fault tolerant system - Question Paper
B.E 4/4 (E.C.E)(II-SEMESTER)SUPPLEMENTARY EXAMINATION,APRIL,2006
Design of fault tolerant system
Code Ho.10344/N
PJCUZGF K3GINXSR.IHG B JE.4/4 (BCE) Il-Seoaster (Mew) Main Examination, April 2006 Subject1 Design of Fault. Tolerant Systems
(Elective-II)
Tlmei 3 Hours. Max.Marksi 75
Hotel Answer all questions of Part A and any five questions from Part. B.
PA8T-A (25 narks)
1. Define the following* 3
a) CbaXi.abi.llty b) Availability c) Maintainability
2. Hhat 1 MTBF. 2
3. T2>irentlata between transient and intermittent faults. 3 4* Vtaat is Fail-Soft operation. 2 5* E&lfferentiate between observability and aontrollability. 3 6. Wiat is raeant by Fail Safe fa sign. 2 7* Mention the advantages of XtSSD technique. 3 B. Yhat is pluribus and where do you. use it. 2
9. 'What is self-checking PI*A. Give its structure. 3
10. Define the terms Bioco/Bnao. 2
PART-b {SxlOSO marks)
11. a) Hhat are temporary faults and what are the &&iiqtMfS that are used to
present then* 3
b) Per the eirouit below find the tests to deteat Sfc-e-0 and 8-a-l faults
It and k by using Boolean difference method. 7
B-
C
JD
12* What Is fault-toleranoe Sacplain in detail the nethod of fault toleranoe
by a) Static redundancy b) self-purging redundantly c) Hybrid redundancy. 10
13. a) Design a eheck bit generator circuit for totally self checking ahecker
for Berger cede for the aase information bits % * 7# oheak bits * 3. 7
b) Hrlte short motes on self-ohooking aheaker far Lowoost residue aode. 3
14 Saqplain In detail, the features, rules and advantages of MU58> testable
circuits. 10
t 9 f
IS. Bacplain in detail The Keed-Kuller expansion technique and 3 level cet-AREM* design' for realisation of testable combinational logie airouits. 1
b!!t 8t "aul*r *** C0 1, lth ooBwr.tar. tor end colleatar circuits for 3-channel fin.
17* Write short notes cut
1) *tact at faults
2) VKO rail aheaker
3)
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