ET245 TEST 1 Study Guide (math)
In an even parity scheme, each byte should contains ________ number of ones.
even
What is the decimal equivalent of AF16_16? Select one: A. 44,822 B. 127,425 C. 127,426 D. 44,821
A.
Which of the following represents the correct counting sequence from 9FE16? Select one: A. 9FF, A00, A01, A02, A03, A04 B. 9FF, 1AF0, 1AF1, 1AF2, 1AF3, 1AF4 C. 9FF, 1A00, 1A01, 1A02, 1A03, 1A04 D. AFF, 1AF0, 1AF1, 1AF2, 1AF3, 1AF4
A.
Which of the following statements BEST describes parity checking? Select one: A. Parity checking is best suited for detecting single-bit errors in transmitted codes. B. Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another. C. Parity checking is capable of detecting and correcting errors in transmitted codes. D. Parity checking is not suitable for detecting single-bit errors in transmitted codes.
A.
The hexadecimal equivalent for 1100 1010 0111 10012 is: Select one: A. DA87 B. CA87 C. DA79 D. CA79
D
The hexadecimal equivalent of 15,90710 is: Select one: A. 3C23 B. 3D23 C. 3B23 D. 3E23
D
What is the decimal weight of the MSB in a 12-bit number? Select one: A. 4,096 B. 1,024 C. 8,192 D. 2,048
D
Alphanumeric codes should include at least: Select one: A. the ability to represent decimal numbers greater then 12810 in a straight binary format. B. the capacity to represent the alphabet upper and lowercase characters and the decimal numbers in a straight binary format. C. the capacity to code all possible decimal numbers in a direct octal representation of BCD codes. D. the alphabet upper and lowercase letters, the decimal digits, the 7 punctuation marks, and other characters or symbols.
D.
Select the correct transmission code group for a hexadecimal value of 52 if the even parity method of error detection is used. The parity bit is to the left of the code MSB. Select one: A. 1101000 B. 01010001 C. 01010010 D. 11010010
D.
The binary equivalent for 16910 is: Select one: A. 011111011 B. 11101101 C. 11010111 D. 10101001
D.
What is the largest decimal value that can be represented using nine binary bits? Select one: A. 1024 B. 1023 C. 512 D. 511
D.
Which of the following decimal numbers is represented by the binary bits 1011_2? Select one: A. 15 B. 13 C. 9 D. 11
D.
The binary equivalent for DFA16 is: Select one: A. 1101111110102 B. 1110101110102 C. 0110110110112 D. 1111011001012
A.
The hexadecimal equivalent of 011110111012 is: Select one: A. 3DD B. DD3 C. 7B5 D. 5B7
A.
The binary equivalent of 37 is
100101
Select the correct ASCII code representation of the hexadecimal number 5A. Select one: A. 101 1010 B. 011 0000 C. 101 1000 D. 101 1001
A
A computer with a 32-bit address bus is capable of generating ________ addresses. Select one: A. 4,294,967,296 B. 128,000,000 C. 256,000,000 D. 1,048,576
A.
Convert the BCD number 0011 0111 0101 1001 to its decimal equivalent. Select one: A. 3,759 B. 14,168 C. 14,169 D. 3,758
A.
Which of the following represents the correct counting sequence from FEE16? Select one: A. FED, FEC, FEB, FEA, FEA, FFB B. FEF, FF0, FF1, FF2, FF3, FF4 C. FF0, FF1, FF2, FF3, FF4, FF5 D. FEF, FFF, 1FF0, 1FF1, 1FF2, 1FF3
B
How many binary digits make up a byte? Select one: A. 32 B. 8 C. 4 D. 16
B.
How many different numbers can be obtained using five binary bits? Select one: A. 63 B. 32 C. 31 D. 64
B.
The uppercase letter Q has an ASCII code of 101 0001. What is the hexadecimal representation of this value? Select one: A. 4F B. 51 C. 50 D. 4E
B.
What is the largest decimal number that can be represented using five binary bits? Select one: A. 64 B. 31 C. 32 D. 63
B.
Convert 11001101_2 to its decimal equivalent using the sum-of-weights position method. Select one: A. 409 B. 205 C. 410 D. 207
B. 205
The ASCII code is an alphanumeric code that has 2^7 = 128 possible code groups. How many bits are required to accommodate 128 different code groups? Select one: A. 6 B. 9 C. 7 D. 8
C
How many bytes are required to represent the decimal number 107 in binary? Select one: A. 4 B. 2 C. 1 D. 3
C.
What is the binary equivalent of the decimal value 437? Select one: A. 101111111 B. 101101011 C. 110110101 D. 11111100
C.
Which of the following groups of codes represent all the invalid BCD codes? Select one: A. 1001, 1010, 1011, 1100, 1101, 1110 B. 1000, 1001, 1010, 1011, 1100, 1110 C. 1010, 1011, 1100, 1101, 1110, 1111 D. 1000, 1001, 1010, 1011, 1100, 1101
C.