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Bits
Nibbles
Bytes
Numbers
ASCII
100
Why do we choose to represent digital data in binary?
It is simpler, more reliable, and uses fewer resources to build machines that have to distinguish between binary states.
100
You have a coordinate grid that is 96 x 96. What is the minimum number of bits that you will need to encode a coordinate in that space?
At least 14 bits are required to encode two independent values that can be as high as 128 (7 bits each).
100
How many more values can be represented by 8 bits than by 4 bits?
What is 2^4 = 16 times as many values.
100
What is the 5-bit binary equivalent for the number 20?
What is 10100?
100
This is the minimum number of bits you would need to encode the 26 letters of the alphabet as capital and lowercase plus a period and a space (54 characters)?
What is 6 bits (64 possible permutations)?
200
If you click on a web link and the linked site begins to load immediately, how would you describe the latency?
What is low. (the first bit is received immediately upon requesting the information.)
200
What's the simplest way to determine whether a binary number is odd?
Any binary value that ends in "1" is odd.
200
Each cell in a spreadsheet is encoded using an an 4 bit value for column position and an 8 bit value for row position. What is the maximum number of rows in the spreadsheet?
What is 256 rows that can be encoded using 8 bits.
200
Put the following binary values in order from GREATEST to LEAST: 01010 010000 1110
What is: 010000 1110 01010
200
This is the most commonly used and basic standard for character encoding in use in the United States.
What is the American Standard Code for Information Interchange--ASCII
300
6 bits can represent 64 different values. How many bits are needed to represent 32 different values?
5 bits are needed to represent 32 different numbers.
300
This is the set of rules governing the exchange or transmission of information of data between devices.
What is a protocol?
300
This is the number of bits in one byte.
What is 8?
300
The number of students at Mandeville High School has grow quickly. In years past, student ID numbers were encoded using 9 bits. Now that the student population includes 2,012 current students, what is minimum number of bits needed to create a unique ID # for each student?
11 bits can encode 2048 unique values. 11 bits can encode values 0 through 2047.
300
Why is does ASCII exist?
ASCII is necessary because it allows us to have a shared scheme for translating between numbers, which we can represent in binary, and symbols.
400
A bitrate is generally measured in what units?
bit rate is usually measure in Hertz (which is a frequency equal to the number of times PER SECOND). We often use different prefix multipliers like kilo-, mega-, giga-, tera-, peta-,exa-, and zetta-. Bitrates are sometimes written as bits per second.
400
This is the time it takes for a bit to travel from its sender to its receiver.
What is LATENCY?
400
This is the transmission capacity or maximum possible bitrate using a specific means of sending and receiving bits.
What is bandwidth?
400
Each cell in a spreadsheet is encoded using a 4 bit value for column position and an 8 bit value for row position. What is the maximum number of columns in the spreadsheet?
16 unique column values can be encoded using 4 bits.
400
Convert 9 in decimal to octal.
9 in decimal is 11 in octal.
500
A binary message consisting of 4 bits was sent to you by a friend. The message was supposed to be 0101. Unfortunately, your friend sent the message at one-half the bit rate you agreed upon, while you read the message at the original rate. What message did you receive instead?
You would have read 0011.
500
A nibble is equivalent to this many bits.
What is 4? 4 bits are also known as half-bytes, nybbles, semi-octet, quadbit, or quartet. A nibble has 2^4 possible values.
500
How high can you count using 10 bits (starting at 0)?
You can count from 0 to 1023 using 10 bits.
500
Translate the hexidecimal value 1B into decimal.
1B in hexadecimal is equivalent to 27 in decimal. (Its one in the 16th place, and eleven in the ones place.) (This is more challenging than anything you'll be asked to do on the test, but it is a good way to determine whether you understand number systems.)
500
Convert 20 in decimal to the equivalent quantity in a base 20 number system.
20 in decimal is 10 in base 20.