All Computer Organization & Architecture questions

List I                              List II
P. Immediate                        1. Element of an array
Q. Indirect                         2. Pointer
R. Base with index                  3. Element of a record
S. Base with offset/displacement    4. Constant

Single correct

• AP–4, Q–3, R–1, S–2
• BP–4, Q–2, R–1, S–3
• CP–1, Q–4, R–3, S–2
• DP–2, Q–3, R–1, S–4

Single correct

• AADD Z, X, Y
• BLOAD R0, X ; ADD Z, R0, Y
• CADD R0, X, Y ; STORE Z, R0
• DLOAD R0, X ; LOAD R1, Y ; ADD R2, R0, R1 ; STORE Z, R2

Single correct

• ARead-after-read
• BRead-after-write
• CWrite-after-read
• DWrite-after-write

One or more correct

• A$Z = X + Y$
• B$Z = X - Y$
• C$Z = -X + Y$
• D$Z = -X - Y$

Single correct

• A35C80000
• B35CC0000
• C35E80000
• D35EC0000

Single correct

• A$N = M + L$
• B$N = M - L$
• C$N = M + K$
• D$N = M - K$

Numerical answer

Single correct

• ABoth S1 and S2 are true
• BBoth S1 and S2 are false
• CS1 is true and S2 is false
• DS1 is false and S2 is true

One or more correct

• A$N1 + N2$
• B$N2 + N3$
• C$N3 - N4$
• D$N1 + N4$

Numerical answer

Single correct

• A8
• B4
• C64
• D16

One or more correct

• AEvery access to P results in a cache miss
• BEvery access to R results in a cache hit
• CEvery access to Q results in a cache miss
• DExcept the first access to S, all subsequent accesses to S result in cache hits

Numerical answer

Numerical answer

Single correct

• A(iii), (i), (ii)
• B(i), (iii), (ii)
• C(i), (ii), (iii)
• D(iii), (ii), (i)

One or more correct

• A1000 1010 in 8-bits
• B1111 1010 in 8-bits
• C1000 0000 0000 1010 in 16-bits
• D1111 1111 1111 1010 in 16-bits

One or more correct

• AThe data path can implement arithmetic operations involving two registers.
• BThe data path can implement arithmetic operations involving one register and one immediate value.
• CThe data path can implement arithmetic operations involving two immediate values.
• DThe data path can only implement arithmetic operations involving one register and one immediate value.

Single correct

• A$6 \times 2^{10}$
• B$8 \times 2^{10}$
• C$2^{12}$
• D$2^{14}$

ADD R1, #25     // R1 = R1 + 25

Single correct

• A16
• B20
• C22
• D24

Numerical answer