Kafli 1

D. 11111011

Which of the following bit patterns represents the value -5 in two's complement notation? A. 00011010 B. 11111011 C. 00000101 D. 11111011

D. 100001001

Assuming that each of the following bit patterns originally had even parity, which one contains an error? A. 100110100 B. 110000011 C. 000011000 D. 100001001

C. 00101000

Which of the following bit-patterns represents the smallest value using the floating-point format in which the most significant bit is the sign bit, the next three bits represent the exponent field in excess notation, and the last four bits represent the mantissa? A. 01001000 B. 01011000 C. 00101000 D. 01111000

A. Main memory

Which of the following data storage systems provides the most efficient random access to individual data items? A. Main memory B. Magnetic disk C. CDs/DVDs D. Flash drives

B. MIDI

Which of the following is a means of encoding music? A. ASCII B. MIDI C. JPEG D. GIF

B. 1234545

Which of the following is a possible LZW compression of the message "xyz xyz xyz"? A. 1234 B. 1234545 C. 232 D. 12

D. 100.101

Which of the following is the binary representation of 4 5/8? A. 100.11 B. 10.011 C. 110.101 D. 100.101

D. GIF

Which of the following provides a compressed representation of an image by limiting the number of different pixel colors to 256, thereby enabling each pixel in an image to be represented by a single byte whose value indicates which of a palette of entries represents the pixel's color? A. ASCII B. MPEG C. JPEG D. GIF

A. 00000010

Which of the following representations in two's complement notation represents the largest value? A. 00000010 B. 11111111 C. 00000001 D. 11111110

C. CDs/DVD

Which of the following storage systems is best suited for storing and retrieving long strings of data that are processed in their sequential order? A. Main memory B. Magnetic disk C. CDs/DVD

C. ASCII

Which of the following systems is least efficient when encoding numeric values? A. Two's complement notation B. Excess notation C. ASCII D. Floating-point notation

C. 65,536

How many different symbols can be encoded using Unicode? A. 256 B. 4,096 C. 65,536 D. 1,046,476

A. AND

1. Which of the following Boolean operations produces the output 1 for the fewest number of input patterns? A. AND B. OR C. XOR

D. 11111100

1. Which of the following representations in two's complement notation represents the smallest value? A. 00000010 B. 11111111 C. 00000001 D. 11111100

B. An OR followed by a NOT

2. Which of the following best describes the NOR operation? A. An XOR followed by a NOT B. An OR followed by a NOT C. A NOT followed by a NOT C. An AND followed by a NOT

B. 0100 + 0100

9. In which of the following addition problems (using two's complement notation) does an overflow error occur? A. 0011 B. 0100 C. 1100 + 1010 + 0100 + 1100

A. 3

How many errors per pattern could be corrected when using an error-correcting code in which any two code patterns differ by a Hamming distance of 8? A. 3 B. 4 C. 5 D. 6

B. 10111001

What is the result of the following addition problem (using two's compliment notation)? 00001111 + 10101010 A. 011000101 B. 10111001 C. 01010101 D. 10110101

A. 011000101

What is the result of the following subtraction problem (using two's compliment notation)? 00001111 - 10101010 A. 011000101 B. 10111001 C. 01010101 D. 10110101

B. 1 1/2

What value is represented by the bit pattern 01011100 when interpreted using floating-point format in which the most significant bit is the sign bit, the next three bits represent the exponent field in excess notation, and the last four bits represent the mantissa? A. -1 1/2 B. 1 1/2 C. -3/8 D. 3/8

D. Flash drives

Which of th Which of the following mass storage system does not require physical motion? A. Magnetic tape B. Magnetic disk C. DVDs D. Flash drivese following mass storage system does not require physical motion? A. Magnetic tape B. Magnetic disk C. DVDs D. Flash drives

C. A6

Which of the following bit patterns (represented in hexadecimal notation) represents a negative number in two's complement notation? A. 7F B. 55 C. A6 D. 08

A. 7F

Which of the following bit patterns (represented in hexadecimal notation) represents a positive number in two's complement notation? A. 7F B. F7 C. A8 D. 8A

C. 110011

Which of the following bit patterns cannot be expressed in hexadecimal notation? A. 11111111 B. 1001 C. 110011 D. 100000000001

C. 00000101

Which of the following bit patterns represents the value 5 in two's complement notation? A. 00011010 B. 11111011 C. 00000101 D. 11111011

D. 6 1/4

Which of the following values cannot be stored accurately using a floating-point format in which the most significant bit is the sign bit, the next three bits represent the exponent field in excess notation, and the last four bits represent the mantissa? A. 2 1/2 B. 3/16 C. 7 D. 6 1/4