Question 1

Which number representation method is often used to store the exponential value of a fractional part?&#10;A) unsigned integers&#10;B) two's complement&#10;C) Excess&#10;D) ten's complement

Accepted Answer

Excess notation is often used to store the exponential value of a fractional part, especially in floating-point number representation. This method involves adding a bias value to the actual exponent to represent it as a positive value, making it easier to perform arithmetic operations.

Question 2

A 32-bit code called _______ represents symbols in all languages.&#10;A) ANSI&#10;B) Unicode&#10;C) EBCDIC&#10;D) Extended ASCII

Accepted Answer

Unicode is the encoding standard that represents symbols and characters in all languages using a 32-bit code. It is designed to be a single character set that can handle all writing systems and characters found in modern and historic scripts. The other options, ANSI, EBCDIC, and Extended ASCII are all character encoding standards, but they do not support all languages and scripts like Unicode does.

Question 3

In a set of 64 symbols, each symbol requires a bit pattern length of _______ bits.&#10;A) 4&#10;B) 5&#10;C) 6&#10;D) 7

Accepted Answer

To determine the bit pattern length needed for a given number of symbols, we can use the formula 2^n = number of symbols. Solving for n, we get n = log2(number of symbols). In this case, log2(64) = 6, so each symbol requires a bit pattern length of 6 bits. Therefore, the best choice is C.

Question 4

If the ASCII code for E is 1000101, then the ASCII code for e is _______. Answer the question without consulting the ASCII table.&#10;A) 1000110&#10;B) 1000111&#10;C) 0000110&#10;D) 1100101

Accepted Answer

The difference between the ASCII code for capital letters and their corresponding lowercase letters is that the sixth bit changes from 0 to 1. In the case of E, the sixth bit is 0, so changing it to 1 results in the binary code 1100101, which corresponds to lowercase e. Therefore, the correct answer is D (1100101).

Question 5

When a fractional part is normalized, the computer stores the _______.&#10;A) only the sign&#10;B) only the exponent&#10;C) only the mantissa&#10;D) the sign, exponent, and mantissa

Accepted Answer

Normalizing a fractional part involves adjusting the mantissa and exponent to represent the same number with a smaller exponent. Therefore, to fully represent a normalized fractional part, the computer must store both the sign, exponent, and mantissa.

Question 6

The precision of the fractional part of a number stored in a computer is defined by the _______.&#10;A) sign&#10;B) exponent&#10;C) mantissa&#10;D) last digit

Accepted Answer

The fractional part of a number stored in a computer is represented by the mantissa, which determines the precision or accuracy of the decimal fraction stored. The sign represents the positivity or negativity of the number, the exponent determines the size or magnitude of the number, and the last digit represents the least significant digit of the number. Therefore, the best choice is C, mantissa.

Question 7

In the _______ graphic method of representing an image in a computer, each pixel is assigned a bit patterns.&#10;A) bitmap&#10;B) vector&#10;C) quantized&#10;D) binary

Accepted Answer

In the bitmap method, each pixel is assigned a specific binary pattern to represent the image. This method is commonly used for digital images and graphics. The vector method uses mathematical equations to represent shapes and lines, while the quantized method involves reducing the number of colors in an image. The binary method simply refers to the use of binary code in representing data.

Question 8

Assume a new Excess system uses 17 bits to represent the exponent section. What is he bias value in this system?&#10;A) 17&#10;B) 16&#10;C) 65535&#10;D) 65536

Accepted Answer

The answer of Assume a new Excess system uses 17...

Question 9

How many symbols can be represented by a bit pattern with ten bits?&#10;A) 128&#10;B) 256&#10;C) 512&#10;D) 1024

Accepted Answer

Each bit can represent two possible values (0 or 1). Therefore, with ten bits, there are 2^10 (2 multiplied by itself ten times) possible combinations or patterns, which equals 1024. This means that 1024 symbols can be represented by a bit pattern with ten bits. Therefore, choice D is the best answer.

Question 10

What is the value of exponent section in the Excess-127 representation?&#10;A) 4&#10;B) -4&#10;C) 127&#10;D) 123

Accepted Answer

In Excess-127 representation, the exponent is stored as an unsigned integer with a bias of 127. If the actual exponent is 4, the stored exponent would be 4 + 127 = 131. However, the question seems to imply a different context or error, as 123 is the closest to a typical stored value for a small positive exponent.

Question 11

A byte consists of _______ bits.&#10;A) 2&#10;B) 4&#10;C) 8&#10;D) 16

Accepted Answer

The answer of A byte consists of _______ bits.&#10;A) 2&#10;B)...

Question 12

The combination of sign and mantissa of a real number in IEEE standard floating point format is stored as an integer in the ____________ representation.&#10;A) unsigned&#10;B) sign-and-magnitude&#10;C) two's complement&#10;D) one's complement

Accepted Answer

The answer of The combination of sign and mantissa of...

Question 13

In the _______ graphic method of representing an image in a computer, the image is decomposed into a combination of geometrical figures.&#10;A) bitmap&#10;B) vector&#10;C) quantized&#10;D) binary

Accepted Answer

The answer of In the _______ graphic method of representing...

Question 14

In the _______ graphic method of representing an image in a computer, re-scaling of the image creates a ragged or grainy image.&#10;A) bitmap&#10;B) vector&#10;C) quantized&#10;D) binary

Accepted Answer

The answer of In the _______ graphic method of representing...

Deck 3: Data Storage