Tag: mainframe

Questions Related to mainframe

What is a VALUE clause?
technology mainframe

  1. It specifies the initial contents of a data item or the values associated with a condition-name.

  2. It specifies the data item location.

  3. It describes the picture clause.

  4. All of the above

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Correct Option: A

Binary format can hold --- binary digits in one byte.
technology mainframe

  1. 2

  2. 4

  3. 6

  4. 8

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Correct Option: D

After successful execution of ADD instruction below. A R1, Data1 Where Data1 DC X’85’ and R1 = 2 What is the result?
technology mainframe

  1. R1 will hold 2 and condition code is set to 0

  2. R1 will hold 87, Data1 will hold 85 and condition code is set to 2.

  3. Data1 will hold 87, R1 will hold 2 and condition code is set to 2.

  4. None of the above

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Correct Option: C

Pick the correct execution statement for BAS instruction.
technology mainframe

  1. The address of the next sequential instruction (NSI) is placed in the 1st-operand register. Subsequently a branch is made to the location given by a 2nd-operand label.

  2. The address of the next sequential instruction (NSI) is placed in the 2nd-operand register. Subsequently a branch is made to the location given by a 1st-operand label.

  3. BAS instruction is not there in Assembler

  4. None of the above

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Correct Option: A

For Instruction BCTR R2 = 8 A1 = ADDR1 BC R2,A1 - - - ADDR1: MVC A,B - - -Which of the following is true?

technology mainframe

  1. ADDR1 will execute until R2 becomes 0.

  2. ADDR1 will execute until R2 becomes 8.

  3. ADDR1 will never be executed.

  4. All of the above.

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Correct Option: A

Which of the following is true for Compare instruction in assembler?
technology mainframe

  1. The data of the 1st-operand register is compared with the data of the 2nd-operand field. The result of the comparison is indicated in the condition code which may be checked further.

  2. The data of the 1st-operand register is compared with the data of the 2nd-operand field. The result of the comparison is indicated in the condition code which will not be checked further.

  3. The data of the 1st-operand register is compared with the data of the 2nd-operand field. Condition codes are not at all checked.

  4. None of the above.

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Correct Option: A

How the quotient and remainder get stored in registers after successful execution of Divide instruction of Assembler
technology mainframe

  1. The quotient is placed in the 1st-operand odd-register and the remainder in the even-register.

  2. The remainder is placed in the 1st-operand odd-register and the quotient in the even-register.

  3. Both are stored in even register.

  4. Both are stored in odd register

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Correct Option: A

Which of the following Instructions is used to allocate Memory in Assembler
technology mainframe

  1. DC

  2. DS

  3. No Such Instruction Exists

  4. 1 and 2

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Correct Option: A

Which of the following Instructions is used to define a Constant in Assembler?
technology mainframe

  1. DS

  2. DC

  3. No such instruction exists.

  4. Both 1 and 2

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Correct Option: A

If name of gdg is MYFILE.LIB.TEST then what is the corresponding GDG dataset name that are derived from GDG?
technology mainframe

  1. MYFILE.LIB.TEST.G001

  2. MYFILE.LIB.TEST.G0001V00

  3. MYFILE.LIB.TEST1

  4. WE CANNOT DETERMINE

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Correct Option: B