Quiz 2

Representation of hexadecimal number (6DE)H in decimal: Select one: a. 6 * 16^2 + 12 * 16^1 + 13 * 16^0 b. 6 * 16^2 + 13 * 16^1 + 14 * 16^0 c. 6 * 16^2 + 11 * 16^1 + 14 * 16^0 d. 6 * 16^2 + 14 * 16^1 + 15 * 16^0

b. 6 * 16^2 + 13 * 16^1 + 14 * 16^0

Original ASCII, extended-ASCII and Unicode UTF-16 use __________________ respectively to represent characters. Select one: a. 4 bits, 8 bits and 16 bits b. 7 bits, 8 bits and (16 or 32) bits c. 8 bits, 10 bits and 16 bits d. None e. 7 bits, 8 bits and (8 or 16) bits

b. 7 bits, 8 bits and (16 or 32) bits

The expression for Absorption law is given by _________ Select one: a. A + AB = B b. A + AB = A c. AB + AA' = A d. A + B = B + A

b. A + AB = A

Mathematics used in expressing, analyzing, and designing of digital electronic circuits. Select one: a. Logical mathematics b. Boolean algebra c. Numerical methods d. Statistical approach

b. Boolean algebra

Which system groups number by sixteen and power of sixteen: Select one: a. None of these options b. Hexadecimal c. Binary d. Octal

b. Hexadecimal

Any signed negative binary number is recognised by its ________ Select one: a. Nibble b. MSB (most significant bit) c. LSB (least significant bit) d. Byte

b. MSB (most significant bit)

A binary number with 4 bits is called a_________: Select one: a. Bit b. Nibble c. None of these options d. Bytes

b. Nibble

The decimal equivalent of the binary number (1011.011)2 is ________ Select one: a. (9.23)10 b. (11.175)10 c. (11.375)10 d. (10.123)10

c. (11.375)10

In 1's complement representation, what is the value of the number "1111 1000"? Select one: a. 7 b. 248 c. -7 d. 0 e. None

c. -7

Find the sum of binary number 1010 and 0011. Select one: a. 1111 b. 1021 c. 1101 d. 1011

c. 1101

The most practical way of converting hexadecimal numbers to binary is to give each number its _________ equivalent bits. Select one: a. Two b. Three c. Four d. Five

c. Four

_________ stores data and program code. Select one: a. I/O b. CPU c. Memory d. None e. Monitor

c. Memory

An output of logic zero can be generated by what logic gate(s) if all inputs are zero? Select one: a. NAND gate b. AND gate c. OR gate d. NOR gate

c. OR gate

The parameter through which 16 distinct values can be represented is known as ________ Select one: a. Nibble b. Byte c. Word d. Bit

c. Word

For the following Boolean laws, fill up the blanks with the correct answer A . A' =___, and A' + A = ___ Select one: a. None b. {A, A} c. {0, 1} d. {1, 1} e. {0, 0}

c. {0, 1}

Octal to binary conversion: (24)8 =? Select one: a. (111100)2 b. (111101)2 c. (101010)2 d. (010100)2

d. (010100)2

What is the one's complement form of the number "0110 1100"? Select one: a. (1001 1100) b. (0110 1001) c. None d. (1001 0011) e. (0110 1100)

d. (1001 0011)

Convert the binary number (01011.1011)2 into decimal: Select one: a. (10.7893)10 b. (10.9876)10 c. (11.5874)10 d. (11.6875)10

d. (11.6875)10

The representation of octal number (532.2)8 in decimal is ________ Select one: a. (531.668)10 b. (340.67)10 c. (532.864)10 d. (346.25)10

d. (346.25)10

The boolean function A + BC is a reduced form of ____________ Select one: a. (A + C)B b. A'B + AB'C c. AB + BC d. (A + B)(A + C)

d. (A + B)(A + C)

DeMorgan's theorem states that _________ Select one: a. A' + B' = A'B' b. (AB)' = A' + B c. (A + B)' = A' * B d. (AB)' = A' + B'

d. (AB)' = A' + B'

What is the parity bit (using even-parity) for the following 7-bit ASCII character: 0101110? Select one: a. None b. 1 c. 11 d. 0 e. 00

d. 0

According to boolean law: A + 1 = ? Select one: a. 0 b. A' c. A d. 1

d. 1

Not considering the sign of the number, using 4-bits we can represent ________ different numbers. Select one: a. 9 b. 24 c. None d. 16 e. 32

d. 16

A 24 Byte memory consists ... Select one: a. 60 bits b. 84 bits c. 200 bits d. 192 bits e. 96 bits

d. 192 bits

A(A + B) = ? Select one: a. 1 b. AB c. (1 + AB) d. A

d. A

Simplify Y = AB' + (A' + B)C. Select one: a. A'B + AC' b. AB + A c. AB + AC d. AB' + C

d. AB' + C

The binary number system is also called a __________: Select one: a. Base one system b. Binary system c. Base system d. Base two system

d. Base two system

An important drawback of binary system is ________ Select one: a. It requires large string of 1's and small string of 0's to represent a decimal number b. It requires small string of 1's and large string of 0's to represent a decimal number c. It requires sparingly small string of 1's and 0's to represent a decimal number d. It requires very large string of 1's and 0's to represent a decimal number

d. It requires very large string of 1's and 0's to represent a decimal number

A logic gate whose output is HIGH when a single HIGH at its input is present. Select one: a. NOR gate b. AND gate c. NAND gate d. OR gate

d. OR gate

Conversion from binary to octal number system needs a grouping of bits by Select one: a. Five b. Two c. Four d. Three

d. Three

For the following Boolean laws, fill up the blanks with the correct answer 0. A = ___, and 0 + A = ___ Select one: a.None b. {0, 1} c. {A, A} d. {0, A} e. {0, 0}

d. {0, A}

For the following Boolean laws, fill up the blanks with the correct answer 1.A = ___, and 1+A = ___ Select one: a. {1, A} b. {A, A} c. {1, 1} d. {A, 1} e. None

d. {A, 1}

_________ is the brain of the computer and it is built out of logic gates. Select one: a. I/O b. Memory c. AND Gate d. None e. CPU

e. CPU

For the following Boolean laws, fill up the blanks with the correct answer A . A =___, and A + A = ___ Select one: a. None b. {A, 1} c. {A, 0} d. {1, A} e. {A, A}

e. {A, A}

Complement of the expression A'B + CD' is _________ Select one: a. (A + B')(C' + D) b. (A' + B)(C' + D) c. (A' + B)(C' + D) d. (A + B')(C + D')

a. (A + B')(C' + D)

(A + B)(A' * B') = ? Select one: a. 0 b. AB c. 1 d. AB'

a. 0

In the case of signed binary numbers, how do we represent "-2" in 4-bit 2's complement format? Select one: a. 1110 b. 1010 c. 1011 d. 1111 e. None

a. 1110

The binary equivalent of the hexadecimal number ECE5 Select one: a. 1110 1100 1110 0101 b. 1110 1100 1110 101 c. 1101 1100 1101 0101 d. 1101 1100 1101 101

a. 1110 1100 1110 0101

Not considering the sign of the number, using 4-bits we can represent ________ different numbers. Select one: a. 16 b. 32 c. None d. 24 e. 9

a. 16

Express the following base 10 number "3.5" in scientific notation. Select one: a. 3.5 X 10^0 b. None c. 0 d. 0.35 X 10^1 e. 35 X 10^-1

a. 3.5 X 10^0

A 64-bit word contains ... Select one: a. 8 bytes b. 2 bytes c. 12 bytes d. 3 bytes e. 4 bytes

a. 8 bytes

In boolean algebra, the OR operation is performed by which properties? Select one: a. All of the Mentioned b. Distributive properties c. Associative properties d. Commutative properties

a. All of the Mentioned

Binary numbers can also be expressed in this same notation by _________representation: Select one: a. Floating point b. Binary point c. Decimal point d. None of these options

a. Floating point

What is the smallest part of a computer language? Select one: a. bit b. binary c. byte d. word

a. bit

The following numbers, (i) 1110 and (ii) 1111 are already in the 2's complement form (length 4 bit). What is the sum of these two numbers? Select one: a. -1 b. -3 c. There is an overflow d. 1 e. 3

b. -3

In the case of 4-bit binary numbers (length 4 bit), how do we represent "-4" in 2's complement format? Select one: a. 1010 b. 1100 c. 1111 d. 1011 e. None

b. 1100

In the case of signed binary numbers, how do we represent "-2" in 2's complement format? Select one: a. 1011 b. 1110 c. 1010 d. 1111 e. None

b. 1110

Convert the number (127)10 to binary. Select one: a. None b. 1111111 c. 10000000 d. 1110111 e. 1000000

b. 1111111