একটি XOR লজিক গেট নিম্নলিখিত কোন লজিক গেট/ গেটগুলোর সমবায়ে গঠিত হতে পারে? (An XOR logic gate can be constructed from the combination of which of the following logic gate/gates?)

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?

ক

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

খ

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

গ

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

ঘ

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?

ক

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

খ

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

গ

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

ঘ

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

কোন লজিক গেট দুটিকে সার্বজনীন গেট বলে?

ক

AND OR

খ

OR,NOT

গ

NOR,AND

ঘ

NAND,XOR

যে ইলেক্ট্রনিক লজিক গেইটের আউটপুট লজিক 0 শুধুমাত্র যখন সকল ইনপুট লজিক 1 তার নাম

ক

AND গেইট

খ

OR গেইট

গ

NAND গেইট

ঘ

কোনটিই নয়

নিম্নের কোনটি মৌপিক লজিক গেট (Logic gate) নয়?

ক

খ

AND

গ

NAND

ঘ

NOT

2-ইনপুট XOR গেট তৈরি করার জন্য কয়টি 2-ইনপুট NAND গেট প্রয়োজন?

ক

3 টি

খ

4 টি

গ

5 টি

ঘ

6 টি

A universal logic gate is one which can be used to generate any logic function. Which of the following is a universal logic gate?

ক

খ

AND

গ

XOR

ঘ

NAND

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

ক

i, ii, iii, iv

খ

i, ii, iii

গ

i, ii

ঘ

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

ক

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

খ

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

গ

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

ঘ

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