25-10-2017, 11:17 PM
Hello team...Would you please do a favour by uploading viva questions and answers for Systems Programming which is a subject of IT curriculum we need it.
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system programming lab viva questions and answers pdf
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Hello team...Would you please do a favour by uploading viva questions and answers for Systems Programming which is a subject of IT curriculum we need it.
26-10-2017, 09:58 AM
QUESTIONS WITH ANSWERS
1. Define the system software.
It consists of a variety of programs that support the operation of
computer. This software makes it possible for the user to concentrate on the other problems that must be solved without needing to know how the machine works internally.
Example: operating system, assembler, loader.
2. Give some applications of the operating system.
• to make the computer easier to use
• to manage resources on the computer
• process management
• data and memory management
• to provide safety to the user.
The operating system acts as an interface between the user and the system
For example: windows, linux, unix, two
3. Define the compiler and the interpreter.
The compiler is a set of programs that converts all the high level
language program to machine language program. Interpreter is a set of programs that converts the high-level language program into a machine
language program line by line.
4. Define the loader.
Loader is a set of programs that loads the machine language translated by the translator into the main memory and prepares it for execution.
5. What is the need to register MAR?
MAR (memory address register) is used to store the
memory from which the data will be read or to which the data will be written.
6. Draw the SS instruction format.
opcode L B1 D1 B2 D2
0 7 8 15 16 19 20 31 32 35 36 47
This is a 6-byte instruction used to move data from L + I bytes from the storage
location1 to storage location2.
Storage location1 = D1 + [B1]
Storage location2 = D2 + [B2]
Ex: MOV 60,400 (3), 500 (4)
7. Provide two differences between base relative addressing and program counter
relative address used in SIC / XE.
8. Define indirect addressing
In the case of immediate addressing, the operand field provides the memory
Location. The given address word is captured and gives the address of the operand.
Example: ADD R5, [600]
Here the second operand is given in indirect addressing mode. First, the word is searched at the memory location 600 and it will give the address of the operand.
9. Define immediate addressing.
In this addressing mode, the value of the operand is provided directly. There is no need to refer memory. The immediate addressing is indicated by the prefix '#'.
Ex: ADD # 5
In this instruction, an operand is in the accumulator and the second operand is an immediate value, the value 5 is added directly to the contents of the accumulator and the result is stored in the accumulator.
10. Make a list of two CISC and RISC machines.
CISC Power PC, Cray T3E
RISC - VAX, Pentium Pro architecture
11. The following is a memory configuration:
Address Value Record R
1 5 5
5 7
Sixty-five
What is the result of the following statement?
Relative addressing of the base Relative addressing of the PC Here the destination address is calculated using the formula
Destination address = Offset + [B] Base register B
Here the destination address is calculated using the formula Destination address = Offset + [PC]
PC Counter
The offset is between 0 and 4095 The offset is between -2048 to
2047
twenty-one
ADD 6 (immediate) to R (indirect)
Here 6 is the immediate data and the next value is the indirect data. that is, the register contains the address of the operand. Here the address of the operand is 5 and its corresponding value is 7.
6 + [R] = 6+ [5] = 6+ 7 = 13
12. The following is a memory configuration:
Address Value Record R
4 9 6
5 7
6 2
What is the result of the following statement?
SUB 4 (direct) to R (direct)
Here an operand is in address location 4 (direct addressing) and the next operand is in the register (direct register).
The resulting value is 9 -6 = 3.
13. What is the name of A and L registered in the SIC machine and also specify its use?
A-accumulator
Used for arithmetic operation. that is, in the case of arithmetic operations, one operand is in the accumulator, and another operand can be an immediate value, a register operand or memory contents. The operation given in the instruction is performed and the result is stored in the accumulator register.
L-linkage register
It is used to store the return address in the case of subroutine (JSUB) instructions.
14. What are the instructional formats used in the SIC / XE architecture? Give it a unique format.
Format 1 (1 byte), Format 2 (2 bytes), Format 3 (3 bytes) and Format 4 (4
bytes)
Format 2:
8 4 4
OPCODE R1 R2
15. Consider the instructions in programming SIC / XE
10 1000 LENGTH RESW 4
22
20 ----- NEW WORD 3
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