JAIHINDPURAM, MADURAI 11. Mobile: 9080035050 Computer Science TRB Unit Test 31 (Digital Logic) A. To tell the time of the day 1. To build a mod-19 counter the number of B. To tell how much time has elapsed flip-flops required is since the system was turned on A. 3 C. To carry data signals B. 5 D. To synchronize events in various C. 7 parts of a system D. 8 10. With the use of an electronic counter 2. A multiplexor with a 4 bit data select sixty capsules are to be filled in bottles input is a automatically. In such a counter what A. 4:1 multiplexor will be the number of flip-flops required? B. 2:1 multiplexor A. 3 C. 16:1 multiplexor B. 4 D. 8:1 multiplexor C. 6 3. The astable multivibrator has D. 8 A. Two quasi stable states 11. J K flip-flop has its J-input connected to B. Two stable states logic level 1 and its input to the Q output C. One stable and one quasi-stable state pulse is fed to its clock inputs. The flipflop will now of these 4. Which of the following circuit can be A. Change its state at each clock pulse used as parallel to serial converter? B. Go to state 1 and stay there A. Multiplexer C. Go to state 0 and stay there B. Demultiplexer D. Retain its previous state C. Decoder 12. Due to which of the following reasons D. Digital counter parallel operation is preferred? 5. How many truth tables can be made A. Circuitry is simple from one function table? B. It requires less memory A. One C. It is faster than series operation B. Two D. All of the above C. Three 13. When an inverter is placed between both D. Any number inputs of an SR flip-flop the resulting 6. Which of the following devices selects flip-flop is one of several inputs and transmits it to a A. JK flip-flop single output? B. D flip- flop A. Decoder C. T flip-flop B. Multiplexer D. Master slave JK flip-flop C. Demultiplexer 14. A shift register can be used for D. Counter A. Parallel to serial conversion 7. The master slave JK flip-flop is B. Serial to parallel conversion effectively a combination of C. Digital delay line A. An SR flip-flop and a T flip-flop D. All of these B. An SR flip-flop and a D flip-flop 15. How many flip-flops are needed to divide C. A T flip-flop and a D flip-flop the input frequency by 64? D. Two T flip-flop A. 4 8. Which of the following flip-flops is free B. 5 from race around problem? C. 6 A. T flip-flop D. 8 B. SR flip-flop 16. The function of a multiplexer is to C. Master slave JK flip-flop A. Decode information D. All of these B. Select 1 out of N input data sources 9. The clock signals are used in sequential and to transmit it to single channel logic circuits., CS TRB, Madurai. Call / WhatsApp: 9080035050 Page 1
C. Transit data on N lines D. Perform serial to parallel conversion 24. In a flip-flop, ratio of the frequency of an output pulse wave to the input wave 17. The advantage of serial transfer pulse is compared with parallel transfer for data transmission is that A. It is faster B. It needs only one wire C. BCD is compatible D. All of these 18. A stable multivibrator are used as A. Comparator circuit B. Squaring circuit C. Frequency to voltage converter A. ½ B. 1 C. 2 D. 4 25. The number of flip-flops required in a decade counter is. A. 3 B. 4 C. 5 D. 10 D. Voltage to frequency converter 19. What table shows the logical state of a digital circuit output for every possible Your Answers. combination of logical states in the 1 2 3 4 5 inputs? A. Function table B. Truth table C. Routing table D. ASCII table 20. The function difference between SR flipflop 6 11 7 12 8 13 9 14 10 15 and JK flip-flop is that 16 17 18 19 20 A. JK flip-flop is faster than SR flip-flop B. JK flip-flop has a feedback path 21 22 23 24 25 C. JK flip-flop accepts both inputs 1 D. JK flip-flop does not require external clock 21. The flip-flops which operate in synchronism with external clock pulses are called A. Synchronous flip-flop B. Asynchronous flip-flop C. Either(a) or (b) of these 22. How many bits are required to encode all twenty six letters, ten symbols and ten numerals? A. 5 B. 6 C. 7 D. 46 23. Which of the following input combinations is not allowed in an SR flip-flop? A. S=0,R=0 B. S=0,R=1 C. S=1,R=0 D. S=1,R=1 For 100% sure success in Computer Science TRB Exam Join Today. MADURAI 11. Mobile: 9080035050 Admission going on for Regular Classes Week End Classes Distance Mode Classes More than 100 Unit Test More than 25 Revision Test More than 5 Model Exams Unit wise Study Materials prepared by Subject Experts Classes handled by Experienced College Professors We are the FIRST to provide DISTANCE MODE CLASSES for Computer Science TRB (Wherever you are in Tamilnadu you can join in Distance Mode Class and get 100% SURE SUCCESS in Computer Science TRB Exam), CS TRB, Madurai. Call / WhatsApp: 9080035050 Page 2
JAIHINDPURAM, MADURAI 11. Mobile: 9080035050 Computer Science TRB Unit test 44 (System Software) 1. The separates characters of the source language into groups that logically belong together, these groups are called tokens A. Scanner B. Parser C. Code generator of these 2. is a optional phase designed to improve the intermediate code so that the multiple object program runs faster and /or takes less space 8. Each replacement of the right side of a production by the left side in the process is called A. Reduction B. Handle C. Overload 9. parser scan the input from left to right and construct a rightmost derivation in reverse A. LR A. Lexical analyzer B. Top down B. Code optimization C. Code generation of these 3. A compiler may run on one machine and produce object code of another machine is called A. Cross compiler B. Assembler C. Machine compiler 4. The set symbols used in a programming C. Bottom up 10. The postfix notation for (a+b)*c is A. Ab+c* B. abc* C. ab*c+ 11. In the allocation, the position of an activation record in memory is fixed at compile time language is called its A. Stack A. Alphabet B. Static B. String C. Heap C. Word D. All 5. A specialized kind of flowchart for lexical analyzer called a A. Transition diagram B. Finite Autometa C. Data flow diagram 6. A grammar that produces more than one parse tree for some sentence is said to be A. Regular B. Context Sensitive C. Context Free D. Ambiguous 7. A for grammar G is a program that takes as input a string w and produces as output either a parse free for w, if w is a sentence of G or error message indicating that w is not a sentence of G A. Parser B. Scanner C. Optimizer 12. Which of the following translation program converts assemble language program to object A. Assembler B. Compiler C. Macro processor D. Linker 13. Assembler is a program that A. Place programs into memory and prepares them for execution B. Auto mates the translation of assembly language into machine language C. Accepts a program written in a high level D. Appears to executes a resources as if it were machine language 14. An interpreter is a program that A. Place programs into memory and prepares them for execution B. Auto mates the translation of assembly C. Accepts a program written in a high level, CS TRB, Madurai. Call / WhatsApp: 9080035050 Page 1
D. Appears to executes a resources as if it were 23. A bottom up parser generates machine language A. Left most derivation 15. A compiler is a program that A. Place programs into memory and prepares them for execution B. Auto mates the translation of assembly language into machine language C. Accepts a program written in a high level D. Appears to execute a resources as if it were machine language 16. Local and loop optimization in turn provide motivation for A. Date flow analysis B. Constant folding C. Peephole optimization B. Right most derivation C. Right most derivation in reverse D. Left most derivation in reverse 24. Recursive descent parsing is an example of A. Top down parsers B. Bottom up parsers C. May be top down or bottom up 25. In operator precedence parsing, precedence relations are defined A. Top down parsers B. Bottom up parsers C. To delimit the handle D. DFA and constant folding 17. The graph that shows the basic blocks and their Your Answers. successor relationship is called 1 2 3 4 A. a DAG 5 B. Flow graph C. a graph with cycles 6 7 8 9 10 18. In an absolute loading schema, which loader 11 12 13 14 15 function is accomplished by programmer? A. Allocation 16 17 18 19 20 B. Linking C. Reallocation 21 22 23 24 25 D. Both A and B 19. In an absolute loading schema, which loader function is accomplished loader? A. Allocation B. Linking C. Reallocation D. Both A and B 20. In an absolute loading schema, which loader function is accomplished by loader? A. Allocation B. Linking C. Reallocation D. Loading 21. Type checking is normally done during A. Lexical analysis B. Syntax analysis C. Syntax directed translation D. Code optimization 22. A top down parser generates A. Left most derivation B. Right most derivation C. Right most derivation in reverse D. Left most derivation in reverse For 100% sure success in Computer Science TRB Exam Join Today. MADURAI 11. Mobile: 9080035050 Admission going on for Regular Classes Week End Classes Distance Mode Classes More than 100 Unit Test More than 25 Revision Test More than 5 Model Exams Unit wise Study Materials prepared by Subject Experts Classes handled by Experienced College Professors We are the FIRST to provide DISTANCE MODE CLASSES for Computer Science TRB (Wherever you are in Tamilnadu you can join in Distance Mode Class and get 100% SURE SUCCESS in Computer Science TRB Exam), CS TRB, Madurai. Call / WhatsApp: 9080035050 Page 2
JAIHINDPURAM, MADURAI 11. Mobile: 9080035050 Computer Science TRB Unit test 45 (MS Word) 1. In which view Headers and Footers are D. Fill Style visible 9. What item contains detailed information about A. Normal View something in the text? B. Draft View A. Footer C. Page Layout View B. Header D. Print Layout View C. Head Note 2. Text-styling feature of MS word is D. Foot Note A. Word Color 10. To change line height to 1.5 we use shortcut B. WordArt key C. WordFont A. Ctrl+1 D. WordFill B. Ctrl+2 3. Which items are placed at the end of a C. Ctrl+4 document D. Ctrl+5 A. Footer 11. We can change the thickness of a line from B. Foot Note A. Line width C. End Note B. Line Height D. Header C. Line Thick 4. A number of letter that appears little below the D. Line Style normal text is called 12. The space left between the margin and the A. Superscript start of a paragraph is called B. Subscript A. Spacing C. Supertext B. Gutter D. Toptext C. Indentation 5. The direction of a rectangular page for D. Alignment viewing and printing is called 13. To apply center alignment to a paragraph we A. Orientation can press B. Direction A. Ctrl + C C. Print Layout B. Ctrl+S D. Preview C. Ctrl + C + A 6. We can remove / hide border of a shape by D. Ctrl + E selecting 14. The process of removing unwanted part of an A. No Line image is called B. No Outline A. Hiding C. No Border B. Bordering D. White Line C. Cutting 7. Which feature starts a new line whenever a D. Cropping word or sentence reached a border? 15. A number of letter that appears little above the A. Text Line normal text is called B. New Line A. Superscript C. Text Align B. Subscript D. Text Wrapping C. Supertext 8. Color and pattern used to fill a closed shape is D. Toptext called 16. We can insert a page number at A. Shape A. Header B. Fill Back B. Footer C. WordArt C. Both (A) and (B), CS TRB, Madurai. Call / WhatsApp: 9080035050 Page 1
of the above 17. Which one can be used as watermark in a word document A. Text B. Image C. Both (A) and (B) 25. Which item is printed at the bottom of each page? A. Header B. Foot Note C. Title D. Footer of the above 18. The minimum number of rows and column in Your Answers. a MS word document? 1 2 3 4 A. 1 and 1 5 B. 2 and 1 C. 1 and 2 D. 2 and 2 6 7 8 9 10 19. Where footnotes appear in a document? A. End of document B. Bottom of a Page 11 12 13 14 15 C. End of Heading D. Both (A) and (B) 20. Which item appears dimly behind the main 16 17 18 19 20 body text? A. Water Color B. Back Color C. Background 21 22 23 24 25 D. Watermark 21. How many columns you can insert in a word document in maximum? For 100% sure success in Computer Science A. 40 TRB Exam Join Today. B. 45 C. 50 D. 55 22. What is the smallest and largest font size available in the font size tool in formatting toolbar? A. 8 and 72 B. 8 and 68 C. 6 and 72 D. 6 and 68 23. Which of the following is not a font style? A. Bold B. Italics C. Regular D. Superscript 24. What is place to the left of horizontal scroll bar? A. Tab stop buttons B. View buttons C. Split buttons of the above MADURAI 11. Mobile: 9080035050 Admission going on for Regular Classes Week End Classes Distance Mode Classes More than 100 Unit Test More than 25 Revision Test More than 5 Model Exams Unit wise Study Materials prepared by Subject Experts Classes handled by Experienced College Professors We are the FIRST to provide DISTANCE MODE CLASSES for Computer Science TRB (Wherever you are in Tamilnadu you can join in Distance Mode Class and get 100% SURE SUCCESS in Computer Science TRB Exam), CS TRB, Madurai. Call / WhatsApp: 9080035050 Page 2