Test
Week 2
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Preguntas del test (14)
1What is 23 in Binary?
- A10111
- B110010
- C1010110
- D10110
2What is 111000 in Decimal?
- A56
- B64
- C72
- D31
3How many values can a 8 bit binary word represent?
- A128
- B264
- C256
- D512
4The formula for calculating the range of values for a binary word is 0.... 2n - 1
- AVerdadero
- BFalso
5what is 0x 2E in decimal?
- A46
- B34
- C52
- D48
6What is 1011010 + 110101?
- A11010101
- B10001111
- C110101010
- D11101010
7One's Complement involves simply flipping the bits
- AVerdadero
- BFalso
8Two's Complement involves flipping the bits and adding 1
- AVerdadero
- BFalso
9Which of the following is incorrect?
- ABYTE = 8 bits
- BSHORT INT = 32 bits
- CLONG INT = 32 bits
- DWORD = 16 bits
- EDWORD = 32 bits
- FCHAR = 8 bits
10What is HELLO WORLD in ASCII?
- A48454C4C4F20574F524C44
- B78907CFDEA65C9C1B!A532
- C5A726C910232100698CABD
- DFEB1768943291A8A0A2B1010
11Other standards for representing character data are:
- AUnicode
- BEBCDIC
- CADBBS
- DWChar Standard
12Which of the following is true of bitmap images?
- AA bitmap image is just a 2D array of unsigned numbers where each element specifies the colour at that location.
- BEach individual element in the array is called a pixel
- CThe number of bits used to represent each pixel defines the number of colour shades that the bitmap can contain
13Which of the following is inaccurate?
- AGreyScale – uses up to 8 bits/pixel to generate output from black (0) to white (255).
- BColour mapped – uses 8 bits for each pixel as an index into a 32-bit colour (RGB) lookup table to display up to 255 colours.
- CTrue Colour – uses 24-bits / pixel to represent the 3 primary colour components (R,G,B) using 8 bits each. May use 5 bits per component (15/16 bit colour).
Black(0,0,0), White (255,255,255), Red(255,0,0), Blue(0,0,255) etc
Some formats (MSWindows) use BGR instead of RGB
Some formats use 32bits to support an additional alpha channel that specifies transparency for each pixel as well as the RGB colour. - DBitmaps – use a single bit to represent each pixel (ON / OFF).
14Waveform Audio file format is simply a digitised audio sound wave.
Analogue audio is captured using a microphone and converted to digital in the sound card and stored as PCM.
Analogue to Digital conversion first takes discrete samples or snapshots of the value of the sound wave in time and then quantises (or converts) the value of each sample into an unsigned number using a determined wordsize.
The resulting representation is an array of unsigned words and is called Pulse Code Modulation (PCM)- AVerdadero
- BFalso
Información
- Descripción
- Undergraduate (History/Evolution of Computers ) Computer Systems and Networks Test sobre Week 2, creado por mmcgregor30 el 09/11/2014.
- Autor
- mmcgregor30
- Idioma
- English
- Visitas
- 16
- Etiquetas
- Valoración
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