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Worksheetspaper 2 quiz
Total questions: 95
Worksheet time: 48mins
How many bytes are there in 10 megabytes (mb)?
10,000,000 bytes
1,000,000 bytes
10,240,000 bytes
1,024,000 bytes
Convert 200000 megabytes (mb) to gigabytes (GB).
200 GB
20 GB
2000 GB
2 GB
How many bits are there in 10000 bytes?
80,000 bits
100,000 bits
800,000 bits
10,000 bits
How many bytes are there in 2 terabytes (TB)?
2,000,000,000,000 bytes
2,147,483,648 bytes
200,000,000,000 bytes
2,000,000 bytes
What is the value of 1 byte in bits?
4 bits
8 bits
1000 bits
16 bits
How many bytes are there in 1 kilobyte (kB)?
100 bytes
1000 bytes
1024 bytes
8 bytes
What does 1 nibble represent?
2 bits
8 bits
4 bits
16 bits
How many kilobytes are in 1 megabyte (MB)?
100 kilobytes
1000 kilobytes
1024 kilobytes
10000 kilobytes
How many gigabytes are there in 1 terabyte (TB)?
100 gigabytes
1024 gigabytes
1000 gigabytes
10 gigabytes
How many terabytes are there in a petabyte?
100 terabytes
1000 terabytes
1024 terabytes
10000 terabytes
When converting from hexadecimal to decimal, what do you multiply the left-hand digit by?
10
2
16
8
What is the decimal equivalent of the hexadecimal number 2A?
42
52
32
22
What is the decimal equivalent of the hexadecimal number 27?
37
39
40
47
How many bits are there in a binary word used for conversion to hexadecimal in the given example?
4 bits
16 bits
8 bits
2 bits
What is the first step in converting a binary word to hexadecimal according to the material?
Divide into two nibbles of 4 bits
Convert each nibble into its hex value
Take a binary word of 8 bits
Rejoin the converted hex values
Into how many nibbles should the 8-bit binary word be divided for conversion to hexadecimal?
One nibble of 8 bits
Two nibbles of 4 bits each
Four nibbles of 2 bits each
Eight nibbles of 1 bit each
What is the hexadecimal equivalent of the binary nibble 1110?
1
5
E
A
What is the hexadecimal equivalent of the binary nibble 0101?
1
5
E
A
What is the hexadecimal representation of the binary word 11100101?
E5
1E
A5
5E
When adding the binary values 1011 and 1011, what is the correct binary sum?
10110
11100
11010
10101
What is an overflow error in the context of binary numbers?
When the computer performs an operation faster than usual
When the result of an addition is smaller than the number of bits the computer can handle
When the result of an addition is too large for the number of bits the computer works with, resulting in an overflow error
When the computer loses power during a calculation
What is an overflow error in the context of binary numbers?
When the computer performs an operation faster than usual
When the result of a subtraction is too small for the computer to handle
When the result of an addition is too large for the number of bits the computer works with
When the computer runs out of memory to store numbers
What is the decimal ASCII value for the character 'A'?
64
65
66
67
If the ASCII value of 'a' is 97, what is the ASCII value of 'c'?
98
99
100
101
Which character is represented by the binary ASCII code 01100001?
A
a
b
c
What is the binary ASCII code for the character 'space'?
00100000
00100001
00100010
00100011
How do you calculate the size of a sound file in bits?
Sampling rate + resolution + seconds
Sampling rate / resolution / seconds
Sampling rate x resolution x seconds
Sampling rate - resolution - seconds
If you have a sampling rate of 6 samples per second, a resolution of 16 bits, and a duration of 3 seconds, what is the file size in bits?
96 bits
288 bits
18 bits
3 bits
How many bytes are in a sound file that is 288 bits?
36 bytes
288 bytes
24 bytes
72 bytes
How do you calculate the file size of an image in bits?
width + height + bit depth
width x height x bit depth
width x height + bit depth
width + height x bit depth
If an image has a resolution of 10 pixels by 10 pixels with a 2 bit depth, what is the file size in bits?
100 bits
200 bits
20 bits
1024 bits
What does lossy compression do to the data?
Temporarily removes some data
Permanently removes some data
Compresses data without removing any part of it
Makes a copy of the data without compression
How does lossy compression recreate the file after compression?
By using the original data without any changes
By using encryption algorithms to secure the data
By using the remaining data and algorithms to guess the removed content
By asking the user to input the missing data
Is the uncompressed data from a lossy compression technique the same as the original?
Yes, it is exactly the same
No, it is not the same
Yes, but it is encrypted
No, it is in a different format
Would lossy compression be suitable for compressing a computer program?
Yes, because it makes the program run faster
No, because the program might not function correctly
Yes, because it enhances the program's features
No, because it increases the size of the program
What does lossless image compression do?
Permanently removes some data to reduce file size
Finds groups of repeating data and records the data only once along with the number of times it was repeated
Reduces the color range of the image to compress the file size
Encrypts the image data to make it smaller
What is the method called where data is compressed by recording groups of repeating data only once along with the number of times it was repeated?
Data Encryption
Zip Compression
Run Length Encoding (RLE)
Huffman Coding
When data is uncompressed using Run Length Encoding (RLE), how is it restored?
It is restored with some loss of quality
It is restored to a version smaller than the original
It is restored exactly as it was in the original
It is restored with additional data added
What does RLE stand for in the context of data compression?
Run Length Encoding
Random Length Encoding
Run Level Encoding
Range Length Encoding
What does RLE use to encode each run length of the same colored pixel?
Color/length pairs
Frequency/data pairs
Data/size pairs
Pixel/number pairs
Assuming black is represented as '1' and white as '0', how would the run of pixels in the provided example be encoded using RLE?
40 121
4 12
0000111111111111
4 '0's and 12 '1's
What does a Huffman code analyze in a body of text?
The complexity of the text
The frequency with which characters are used
The grammatical correctness of the text
The length of words in the text
In a Huffman tree, where are the most frequently occurring characters placed?
At the bottom of the tree
Randomly throughout the tree
Nearest the top of the tree
Outside of the tree
What type of structure is used to place characters in a Huffman tree?
Linear array
Binary tree structure
Circular linked list
Graph structure
What is the frequency of the character 'S' in the given sentence "she sells sea shells"?
1
4
6
3
Which character has the lowest frequency in the sentence "she sells sea shells"?
E
L
Space
A
How many characters have a frequency of 4 in the sentence "she sells sea shells"?
1
2
3
4
What does the Huffman tree diagram represent in the context of the given sentence "she sells sea shells"?
The binary representation of each character
The order of characters in the sentence
The frequency of each character
The hierarchical structure of character frequencies
Using the Huffman tree provided, how would the letter 'E' be encoded?
00
01
10
11
According to the Huffman tree, what is the encoding for the letter 'L'?
01
10
11
100
How would the word 'LEASH' be encoded using the Huffman tree shown?
01 00 1000 11 1001
10 01 0001 00 0110
11 10 0010 01 0101
00 11 1111 10 1100
How would a space character be encoded using the Huffman tree?
10
01
00
11
What is the output of an AND gate if both inputs are 1?
0
1
2
Undefined
What is the output of an AND gate if at least one input is 0?
0
1
2
Undefined
Which logic statement represents the function of an AND gate?
P = A OR B
P = A XOR B
P = A AND B
P = NOT A
According to the truth table, what is the output when input A is 1 and input B is 0?
0
1
2
Undefined
Based on the truth table, what is the output when input A is 0 and input B is 1?
0
1
2
Undefined
What is the output of an OR gate if both inputs A and B are 0?
0
1
2
3
What is the output of an OR gate if input A is 1 and input B is 0?
0
1
2
3
What is the output of an OR gate if at least one input is 1 (TRUE)?
0
1
2
It depends on the other input
Which logic statement represents the function of an OR gate?
P = A AND B
P = A OR B
P = A XOR B
P = NOT A
What is the logic diagram symbol for an OR gate?
A triangle
A rectangle
A curved shape with two inputs and one output
An arrow
What is the output of a NOT gate if the input is 0?
A) 0
B) 1
C) 2
D) The output is unpredictable
What is the output of a NOT gate if the input is 1?
A) 0
B) 1
C) The gate does not accept the input 1
D) The output is unpredictable
Which of the following logic statements correctly represents the operation of a NOT gate?
A) P = NOT A
B) P = A AND B
C) P = A OR B
D) P = A XOR B
What is the standard symbol for a NOT gate in a logic diagram?
A) A triangle without a circle at the output
B) A triangle with a circle at the output
C) A rectangle
D) An oval
What is the output P when the inputs A and B are both 1 in the given logic circuit diagram?
0
1
2
3
Which logic gates are combined in the circuit diagram to create a more complex circuit?
AND and OR
OR and NOT
AND and NOT
XOR and NOT
What is the logic statement that represents the output P in the circuit?
P = NOT (A OR B)
P = A AND B
P = NOT (A AND B)
P = A OR NOT B
What is the output P when input A is 0 and input B is 1?
0
1
2
3
What is the output P in the truth table when S=1, N=0, and B=1?
0
1
2
3
According to the logic statement P = (S AND N) OR B, what will be the value of P if S=0, N=1, and B=0?
0
1
2
3
In the given logic circuit, which logic gate represents the AND operation?
The first gate where inputs S and N are entering
The second gate where inputs R and B are entering
The gate where input B is entering
The output gate P
What is the logic statement that represents the circuit diagram?
P = S OR N AND B
P = S AND N OR B
P = (S OR N) AND B
P = (S AND N) OR B
What is a network?
A single computer that stores data for a user
A series of computers and other devices that are connected together and can share data and resources
A type of software used for data analysis
A government-owned communication system
Which of the following statements is true about the Internet?
It is the smallest network in the world
It is owned by a single person or organization
It is a collection of networks all around the world
It is a network that cannot share data or resources
Who owns the Internet?
A single person
A private corporation
No one person or organization
The government of a specific country
What is a Wide Area Network (WAN)?
A network that is limited to a single building or campus
A network in which computers communicate using resources supplied by a "third party carrier" such as British Telecom
A private network that is contained within an enterprise
A network that connects computers in a small geographic area, like a home, school, or office building
Which of the following is often used by a WAN to connect different geographical areas?
Fiber optic cables within a building
Cables, telephone lines, satellites, and radio waves
Bluetooth connections
USB cables
What characteristic is common to WANs in terms of ownership?
Single ownership and management
Collective or distributed ownership
Owned by a single organization
No ownership, as they are public domains
Which of the following is an example of a Wide Area Network (WAN)?
A local area network (LAN) in a school
The Internet
A personal area network (PAN) connecting wearable devices
A metropolitan area network (MAN) within a city
What is the term used to describe the dedicated connection set up between two people during a telephone call?
Packet switching
Circuit switching
Line sharing
Multiplexing
Why is circuit switching not suitable for the billions of people sending data across the Internet?
Because it is too expensive
Because it is too slow
Because there could never be enough lines for everyone
Because it uses too much data
What technology is used to address the limitation of circuit switching for Internet data transmission?
Line sharing
Multiplexing
Packet switching
Circuit switching
What does each node in the diagram represent in the context of computer networks?
Computers
Packets
Routers/Nodes
Data files
How are packets depicted in the diagram?
As numbers
As dotted lines
As red dots
As arrows
What is the topic of the learning material page based on the diagram?
Internet security
Sending packets across the Internet
Social media networks
Programming languages
What does the recipient computer do with the packets in data reassembly?
Discards all packets
Re-orders the packets into the correct order
Ignores the order of packets
Sends the packets to another recipient
What happens to corrupt packets during the data reassembly process?
They are ignored
They are deleted
They are requested to be resent
They are repaired by the recipient
What does each data packet contain?
A) A different number of bytes
B) The same number of bytes
C) Only the packet number
D) Only the total number of packets in the transmission
What is each data packet marked with?
A) The sender's address and the receiver's address
B) The encryption key for the data
C) The packet number and the total number of packets in the transmission
D) The type of data being transmitted
What will the recipient computer do when it receives packets?
It will discard the packets
It will acknowledge receipt of packets
It will encrypt the packets
It will request more packets
What happens to packets that are not acknowledged after a set time interval?
They are deleted from the network
They are stored in the recipient computer
They are automatically resent by the sending computer
They are ignored by both sending and recipient computers
What is the role of each node in a network?
To store data packets until they are requested
To direct data packets to their destination along the least busy path
To create new data packets for transmission
To serve as a static point without any data packet management
What is the job of a router in a network?
To increase the speed of data packet transmission
To encrypt data packets for secure transmission
To direct data packets to their destination along the least busy path
To store data packets for long-term archiving
