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A 5-stage pipelined processor has Instruction Fetch (IF), Instruction Decode (ID), Operand Fetch (OF), Perform Operation (PO) and Write Operand (WO) stages. The IF, ID, OF and WO stages take 1 clock cycle each for any instruction. The PO stage takes 1 clock cycle for ADD and SUB instructions, 3 clock cycles for MUL instruction, and 6 clock cycles for DIV instruction respectively. Operand forwarding is used in the pipeline. What is the number of clock cycles needed to execute the following sequence of instructions? Instruction Meaning of instruction I0 : MUL R2, R0, R1 R2← R0 * R1 I1 : DIV R5, R3, R4 R5 ← R3 / R4 I2 : ADD R2, R5, R2 R2 ← R5 + R2 I3 : SUB R5, R2, R6 R5 ← R2 – R6
Which one of the following is the correct syntax for performing substitution using sed? s /expr1/ expr2 b) sed s /expr1 expr2 c) sed s /expr1/ expr2/ flags d) sed s
Which is the correct syntax for sed on command line? ‘’ . b) sed ‘’ . c) sed ‘’ d) sed ‘’ .
Consider the following code sequence having five instructions I1 to I5. Each of these instructions has the following format. OP Ri, Rj, Rk Where operation OP is performed on contents of registers Rj and Rk and the result is stored in register Ri I1: ADD R1, R2, R3 I2: MUL R7, R1, R3 I3: SUB R4, R1, R5 I4: ADD R3, R2, R4 I5: MUL R7, R8, R9 Consider the following three statements. S1: There is an anti-dependence between instructions I2 and I5 S2: There is an anti-dependence between instructions I2 and I4 S3: Within an instruction pipeline an anti-dependence always creates one or more stalls Which one of the above statements is/are correct?
How many objects will be created? String a = new String("Examveda"); String b = new String("Examveda"); String c = "Examveda"; String d = "Examveda";
Which of the following statements are correct? 1. Pseudo instruction is a machine instruction. 2. A pseudo instruction is an instruction to the assembler. 3. The ORG (origin) is an example of pseudo instruction. 4. It is not possible to use ORG more than once in a program. Select the correct answer using the code given below.
For the given syntax of sed, which among the following is not a correct option? General syntax of sed: /pattern/action
Suppliers(Sid: integer, sname:string, city:string, street:string) Parts(pid:integer, pname:string, color:string) Catalog(sid:integer, pid:integer, cost:real) Consider the following relational query on the above database: SELECT S.sname FROM Suppliers S  WHERE S.sid NOT IN (SELECT C.sid FROM Catalog C WHERE C.pid NOT IN (SELECT P.pid FROM Parts P WHERE P.color < > ‘blue’)) Assume that relations corresponding to the above schema are not empty. Which of the following is the correct interpretation of the above query?
What is the output of the following JAVA program? class Test { public static void main (String [ ] args) { Test obj = new Test (); obj.start (); } void start () { String stra="do”; String strb = method (stra); System.out.print(“:” + stra + strb); } String method (String stra) { stra=stra+”good”; System.out.print (stra); return “good”; } }
For a pipelines CPU with a single ALU, consider the following : A. The j + 1st instruction uses the result of jth instruction as an operand B. Conditional jump instruction C. jth and j + 1st instructions require ALU at the same time Which one of the above causes a hazard?