©Jason McConnel 2025 ALL RIGHTS RESERVED.
CEA201 Exam Questions With Correct
Answers A+
What is the definition of "Information"?
a. It is the newspaper
b. It is a hard disk, which can store a lot of data.
c. Data communicated or received that resolves uncertainty about a particular fact or
circumstance.
d. It is the internet - Answer✔Data communicated or received that resolves uncertainty about a
particular fact or circumstance.
A /an __________ is an unambiguous mapping between bit strings and the set of possible data.
a. communication
b. store data
c. decoding
d. encoding - Answer✔communication
How many bits are needed to encode the 10 decimal digits {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}?
a. 2
b. 4
c. 9
d. 10 - Answer✔4
How many bits are needed to encode the 128 ASCII characters (Control and Printable)?
a. 7
b. 8
c. 9
d. 128 - Answer✔7
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
We have four symbols, we might choose a unique two-bit string for each: "A" could be "00", B =
"01", C = "10" and D = "11". The encoding for the message "CBAD" would be__________?
a. 00001111
b. 10101010
c. 10010011
d. 10011001 - Answer✔10010011
The binary number 00010011 is equal to the decimal number ______.
a. 33
b. 3
c. 19
d. 131
e. 13 - Answer✔19
The largest unsigned decimal number that can be represented in binary using eight bits is
______.
a. 64
b. 127
c. 128
d. 255
e. 256 - Answer✔255
The decimal number 21 is equal to the binary number ______.
a. 11110
b. 10001
c. 10101
d. 10110
e. 11101 - Answer✔10101
2's complement of '-6' in 4 bits format is ______.
a. 1101
b. 1011
c. 0101
d. 1010
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
e. 0110 - Answer✔1010
Which of the number is not a representative of hexadecimal system?
a. 1234
b. ABBA
c. 1001
d. DEFG
e. 2018 - Answer✔DEFG
Addition with signed numbers 8 bits (in 2's complement form): 10001011 + 00010001 =
________.
a. 10101110
b. 10001011
c. 11110110
d. 10011100
e. Overflow - Answer✔10011100
Addition with signed numbers 4 bits (in 2's complement form): 0110 + 0011 = _____.
a. 1001
b. 0001
c. 1010
d. 0011
e. Overflow - Answer✔Overflow
The binary number for 0xA0F18 is ______. (binary and hexadecimal numbers using the format
0b____ and 0x____, respectively)
a. 0b 1111 0000 1111 0001 0000
b. 0b 1010 0000 1111 0001 1001
c. 0b 1010 0000 1111 0001 1111
d. 0b 1010 0000 1111 0001 1000
e. 0b 1010 0000 1111 0001 0000 - Answer✔0b 1010 0000 1111 0001 1000
A system uses EVEN parity for error detection. If the 7 data bits and 1 parity bit are 0010101 1,
then the error will go undetected if the received bits are _________.
a. 0011101 1
CEA201 Exam Questions With Correct
Answers A+
What is the definition of "Information"?
a. It is the newspaper
b. It is a hard disk, which can store a lot of data.
c. Data communicated or received that resolves uncertainty about a particular fact or
circumstance.
d. It is the internet - Answer✔Data communicated or received that resolves uncertainty about a
particular fact or circumstance.
A /an __________ is an unambiguous mapping between bit strings and the set of possible data.
a. communication
b. store data
c. decoding
d. encoding - Answer✔communication
How many bits are needed to encode the 10 decimal digits {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}?
a. 2
b. 4
c. 9
d. 10 - Answer✔4
How many bits are needed to encode the 128 ASCII characters (Control and Printable)?
a. 7
b. 8
c. 9
d. 128 - Answer✔7
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
We have four symbols, we might choose a unique two-bit string for each: "A" could be "00", B =
"01", C = "10" and D = "11". The encoding for the message "CBAD" would be__________?
a. 00001111
b. 10101010
c. 10010011
d. 10011001 - Answer✔10010011
The binary number 00010011 is equal to the decimal number ______.
a. 33
b. 3
c. 19
d. 131
e. 13 - Answer✔19
The largest unsigned decimal number that can be represented in binary using eight bits is
______.
a. 64
b. 127
c. 128
d. 255
e. 256 - Answer✔255
The decimal number 21 is equal to the binary number ______.
a. 11110
b. 10001
c. 10101
d. 10110
e. 11101 - Answer✔10101
2's complement of '-6' in 4 bits format is ______.
a. 1101
b. 1011
c. 0101
d. 1010
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
e. 0110 - Answer✔1010
Which of the number is not a representative of hexadecimal system?
a. 1234
b. ABBA
c. 1001
d. DEFG
e. 2018 - Answer✔DEFG
Addition with signed numbers 8 bits (in 2's complement form): 10001011 + 00010001 =
________.
a. 10101110
b. 10001011
c. 11110110
d. 10011100
e. Overflow - Answer✔10011100
Addition with signed numbers 4 bits (in 2's complement form): 0110 + 0011 = _____.
a. 1001
b. 0001
c. 1010
d. 0011
e. Overflow - Answer✔Overflow
The binary number for 0xA0F18 is ______. (binary and hexadecimal numbers using the format
0b____ and 0x____, respectively)
a. 0b 1111 0000 1111 0001 0000
b. 0b 1010 0000 1111 0001 1001
c. 0b 1010 0000 1111 0001 1111
d. 0b 1010 0000 1111 0001 1000
e. 0b 1010 0000 1111 0001 0000 - Answer✔0b 1010 0000 1111 0001 1000
A system uses EVEN parity for error detection. If the 7 data bits and 1 parity bit are 0010101 1,
then the error will go undetected if the received bits are _________.
a. 0011101 1
