The 2-input XOR has a high output only when the input values are

In AES, to make the s-box, we apply the transformation b’_i = b_i XOR b_(i+4) XOR b(i+5) XOR b_(i+6) XOR b_(i+7) XOR c_i What is c_i in this transformation?

A

c_i is the ith bit of byte c with value 0x63

B

c_i is the ith bit of byte c with value 0x25

C

c_i is the ith bit of byte c with value 0x8F

D

c_i is the ith bit of byte c with value 0x8A

In AES, to make the s-box, we apply the transformation – b’i = bi XOR b(i+4) XOR b(i+5) XOR b(i+6) XOR b(i+7) XOR ci What is ci in this transformation?

A

ci is the ith bit of byte c with value 0x63

B

ci is the ith bit of byte c with value 0x25

C

ci is the ith bit of byte c with value 0x8F

D

ci is the ith bit of byte c with value 0x8A

Which of the following statements is/are correct? 1. A system is said to be Finite Impulse Response (FIR), if the output samples of the system depend only on the present input and a finite number of past or previous input samples. 2. If the output of a system y(n) depends only on the present input and past inputs, but not on past outputs, then it is called a non-recursive system. 3. If the output of a system y(n) depends only on the present input and past inputs, but not on past outputs, then it is called a recursive system.

A

1 only

B

1 and 2 only

C

1 and 3 only

D

3 only

A system provides output yi(t) when xi(t) is applied. If the system is said to be LTI then which of the following properties must satisfy? (i).If the input is x3 = ax1(t) + bx2(t), then output must be y3(t) = ay1(t) + by2(t) (ii).If the input is x(t – T), then the output must be y (t – T) (iii).If the input is x3 = ax1(t) + bx2(t), then output must be y3(t) = ay1(t) * by2(t) (iv).If the input is x(t – T), then the output must be y(t + T)

A

(i), (ii) and (iv)

B

(i), (ii) and (iii)

C

(ii), (iii) and (iv)

D

(i) and (ii)

Which of the following statements are true? i) practical application of XOR linked lists are in environments with limited space requirements, such as embedded devices. ii)xor lists are not suitable because most garbage collectors will fail to work properly with classes or structures that don’t contain literal pointers iii)in order to calculate the address of the next node you need to remember the address of the previous node iv)xor lists are much efficient than single, doubly linked lists and arrays

A

i, ii, iii, iv

B

i, ii, iii

C

i, ii

D

i

The inverse s-box permutation follows, b’_i = b_(i+2) XOR b(i+5) XOR b_(i+7) XOR d_i Here d_i is

A

d_i is the ith bit of a byte ‘d’ whose hex value is 0x15

B

d_i is the ith bit of a byte ‘d’ whose hex value is 0x05

C

d_i is the ith bit of a byte ‘d’ whose hex value is 0x25

D

d_i is the ith bit of a byte ‘d’ whose hex value is 0x51

The Chi function is defined as ← a XOR ( aXOR 1) AND a) b) a ← a AND ( aXOR 1) AND a) c) a ← a AND ( a XOR a) d) a ← a XOR ( a AND a)

A

a ← a XOR ( aXOR 1) AND a)

B

x

C

x

D

x

The inverse s-box permutation follows, b’i = b(i+2) XOR b(i+5) XOR b(i+7) XOR di Here di is –

A

di is the ith bit of a byte ‘d’ whose hex value is 0x15

B

di is the ith bit of a byte ‘d’ whose hex value is 0x05

C

di is the ith bit of a byte ‘d’ whose hex value is 0x25

D

di is the ith bit of a byte ‘d’ whose hex value is 0x51

In the question one statement is given, followed by two conclusions, I and II. You have to consider the statement to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statement. Statement: A function is a relation between a set of input elements and a set of possible output elements where each input is related to exactly one output. Conclusion I: Every input element is related to every output element. Conclusion II: Every input element is related to one element of the output.

A

Only conclusion I follows

B

Only conclusion II follows

C

Neither I nor II follows

D

Both I and II follows

The 2-input XOR gate has a high output only when the input bits are _____

A

even

B

different

C

low

D

high

E

None of the above

The 2-input XOR has a high output only when the input values are

Related Questions