What is the primary function of disk access and data management?

Tracks and manages files on disk and memory

What does multitasking allow a CPU to do?

Run multiple actions at the same time

How does an OS support networking?

Manages connections and interactions with networks

What is the purpose of a dialogue box in a GUI?

Allows users to respond to specific choices

What is the main purpose of cache memory?

Temporarily store frequently accessed data for faster processing

What is the role of the ALU in a CPU?

Performing arithmetic and logical operations

What happens in the 'Fetch' stage of the instruction cycle?

Instructions are fetched from primary memory to the CPU

Why must data be copied to RAM before being accessed by the CPU?

The CPU cannot access secondary memory directly

What does the Memory Address Register (MAR) hold?

Memory address of data to be fetched or stored

Which of the following is NOT a function of the Control Unit (CU)?

Performing arithmetic calculations

How does an OS provide security?

Uses authentication and tracks user activities

What is a logic gate?

A Boolean operation implementation in a circuit

How do you convert a decimal number to binary?

Divide by 2 and record the remainder

What is the main difference between a GUI and CLI?

GUI is more user-friendly with graphical elements

What does the acronym WIMP stand for in GUIs?

Windows, Icons, Menus, Pointers

What does the Memory Address Register (MAR) store?

The memory address of the data to be fetched or stored

How does an OS manage memory?

Ensures applications do not interfere with each other’s memory

What is a key role of resource monitoring?

Tracks processor time and memory use

What is a disadvantage of secondary memory?

It is slower than primary memory

Why is secondary memory necessary?

It provides permanent data storage

What is a register in the CPU?

A small storage location holding data

What is the function of Boolean logic in computer circuits?

It determines the logical operations of circuits

Why must instructions and data be copied into RAM?

CPU can only access RAM directly

Which of the following statements about RAM is true?

It is faster than secondary memory

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IBDP Computer Science T2: Computer Organization

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Questions 94

Answers

1
What happens to RAM contents when power is lost?
Data is permanently stored
Data is transferred to secondary memory
Data is wiped
Data is encrypted
2
What is the primary function of disk access and data management?
Enhances GUI appearance
Increases processor speed
Tracks and manages files on disk and memory
Speeds up internet browsing
3
What are the digits used in the binary system?
0 to 15
A to F
0 and 1
0 to 9
4
What service does an OS provide for hardware devices?
Internet browsing
Programming interface
Peripheral communication
Software development
5
How are logic gates represented in circuit diagrams?
As labeled circles
As arrows
As Venn diagrams
As numbers
6
What does the OR operator do when at least one input is 1?
Requires an additional input
Produces 0
Produces random output
Produces 1
7
What does multitasking allow a CPU to do?
Delete old processes automatically
Improve internet speed
Run multiple actions at the same time
Increase RAM capacity
8
How does an OS support networking?
Runs only offline applications
Manages connections and interactions with networks
Enhances graphical processing
Stores files permanently
9
What does the interior of a Venn diagram region represent in Boolean logic?
When the input variable is 1
When the input variable is 0
When the output is 0
When the circuit is incomplete
10
How does the CPU interact with primary memory?
Using external storage
Using registers only
Using secondary memory
Using Memory Buses
11
What is the purpose of a dialogue box in a GUI?
Displays a list of commands
Allows users to respond to specific choices
Increases RAM capacity
Stores user preferences permanently
12
What is the main purpose of cache memory?
Temporarily store frequently accessed data for faster processing
Provide additional storage space for users
Store software applications
Store permanent system data
13
How many Boolean operators are there?
7
4
5
6
14
What is the role of the ALU in a CPU?
Performing arithmetic and logical operations
Managing input/output devices
Fetching instructions from memory
Storing permanent instructions
15
What happens in the 'Fetch' stage of the instruction cycle?
Instructions are fetched from primary memory to the CPU
Data is retrieved from secondary storage
The instruction is decoded for execution
The CPU performs arithmetic operations
16
Why must data be copied to RAM before being accessed by the CPU?
The CPU cannot access secondary memory directly
RAM has higher storage capacity
Secondary memory is too slow
RAM is non-volatile
17
What is the base of the hexadecimal number system?
2
8
10
16
18
How many bytes are in a word for a 64-bit computer?
8 bytes
32 bytes
16 bytes
4 bytes
19
How many inputs does an AND Boolean operator have?
4
2
3
1
20
What does the Memory Address Register (MAR) hold?
The result of calculations
Instructions for ALU
Memory address of data to be fetched or stored
Data to be processed
21
Which of the following is a permanent storage memory that cannot be altered?
Virtual memory
RAM
ROM
Cache
22
What is the smallest controllable element in a display?
Bit
Byte
Pixel
Character
23
Which of the following is NOT a function of the Control Unit (CU)?
Providing data and instructions to the ALU
Controlling the execution sequence of instructions
Performing arithmetic calculations
Retrieving instructions from primary memory
24
How does an OS provide security?
Removes passwords for faster access
Allows unrestricted access to all users
Uses authentication and tracks user activities
Provides antivirus software by default
25
What is a logic gate?
A Boolean operation implementation in a circuit
A component of a truth table
A way to store binary values
A programming function
26
Which storage type is used for holding data permanently?
RAM
Secondary memory
Cache
CPU Register
27
What is the output of an AND gate when both inputs are 0?
Depends on the circuit
1
Undefined
0
28
What is the basic unit of information in computer systems?
Decimal
Byte
Hexadecimal
Bit
29
How are colors typically stored in digital systems?
Using ASCII encoding
Using binary fractions
Using hexadecimal RGB values
Using decimal values only
30
How do you convert a decimal number to binary?
Multiply by 2 and record the remainder
Divide by 16 and record the remainder
Multiply by 10 and subtract 1
Divide by 2 and record the remainder
31
What is the main difference between a GUI and CLI?
GUI requires programming knowledge
GUI is more user-friendly with graphical elements
CLI has icons and toolbars
CLI is easier for beginners
32
What does the acronym WIMP stand for in GUIs?
Windows, Internet, Management, Programs
Wireless, Input, Mouse, Programming
Windows, Icons, Menus, Pointers
Web, Internet, Multitasking, Processing
33
What system do computer circuits use to represent data?
Hexadecimal
Decimal
Binary
Octal
34
Which of the following is NOT a major operating system?
Microsoft Windows
Linux
OS X
Python
35
How does two’s complement represent negative numbers?
By inverting bits and adding 1
Using a special negative sign bit
By subtracting from 255
By doubling the number
36
What does the Memory Address Register (MAR) store?
The memory address of the data to be fetched or stored
The actual data being processed
The results of ALU operations
The binary code of instructions
37
How does an OS manage memory?
Assigns memory randomly to applications
Deletes memory after use
Provides unlimited memory to applications
Ensures applications do not interfere with each other’s memory
38
What is a key role of resource monitoring?
Tracks processor time and memory use
Connects to networks
Installs new software automatically
Deletes unused resources automatically
39
What is a disadvantage of secondary memory?
It is expensive
It has low capacity
It is slower than primary memory
It is volatile
40
Why is secondary memory necessary?
It provides permanent data storage
It improves primary memory access
It increases CPU speed
It reduces power consumption
41
What encoding system is used to represent characters in computers?
ASCII
Two’s complement
Unicode
Binary
42
What is a register in the CPU?
A permanent storage location
A small storage location holding data
A type of external memory
A component controlling all CPU operations
43
How many rows does a truth table with 3 inputs have?
10
6
4
8
44
What is the function of Boolean logic in computer circuits?
It controls memory allocation
It determines the logical operations of circuits
It enhances the speed of computation
It converts decimal numbers to binary
45
Why must instructions and data be copied into RAM?
RAM is non-volatile
RAM stores data permanently
Secondary memory is faster than RAM
CPU can only access RAM directly
46
Which of the following statements about RAM is true?
It has unlimited capacity
It is faster than secondary memory
It remains full when the computer restarts
It stores data permanently
47
How does the NOR operator differ from the OR operator?
It inverts the OR output
It produces the same result
It requires three inputs
It adds an extra condition
48
Which of the following is NOT a common software application?
Spreadsheets
Web browser
RAM booster
Word processor
49
What base is the decimal number system?
Base-2
Base-16
Base-10
Base-8
50
How many bits are in a byte?
32
16
8
4
51
Which of the following is a characteristic of secondary memory?
Faster than RAM
Directly accessed by the CPU
Persistent storage
Volatile
52
What is unique about the XOR operator?
It produces 1 only when both inputs are 1
It produces 0 when one input is 1
It produces 1 only when inputs differ
It has more than two outputs
53
What is the final step in the machine instruction cycle?
Store
Fetch
Decode
Execute
54
What is the most significant bit (MSB) in a binary number?
The fraction part of the number
The rightmost bit
The least important bit
The bit with the greatest value
55
What is the range of a two-digit hexadecimal number?
0 to 1024
0 to FF
0 to 256
0 to 99
56
What is the output of an XOR gate when both inputs are the same?
Random
1
Undefined
0
57
Which of the following correctly describes the four stages of the machine instruction cycle?
Input, Process, Output, Store
Encode, Retrieve, Execute, Output
Fetch, Decode, Execute, Store
Fetch, Encode, Process, Store
58
What is the primary function of an operating system?
Execute application programs
Design computer hardware
Control hardware resources and provide services for programs
Run programming languages
59
What is a key feature of secondary memory?
It is volatile
It provides persistent storage
It has a lower capacity than RAM
It is faster than primary memory
60
Which statement is true about secondary memory?
It has a lower capacity than primary memory
It is volatile
It is slower but has a higher capacity than primary memory
It is directly accessed by the CPU
61
Which logic gate has only one input?
NOT
AND
OR
XOR
62
What is the purpose of a truth table?
To perform mathematical calculations
To visualize circuit layouts
To design user interfaces
To represent logical statements using inputs and outputs
63
What is the function of a toolbar in a GUI?
Displays available commands in a list
Communicates system errors
Provides buttons, icons, and menus for quick access
Saves files automatically
64
What is stored in ROM?
The computer's boot instructions (BIOS)
Temporary application data
Executing program instructions
User files and documents
65
What is the primary role of the CPU in a computer system?
Process data by following instructions
Manage network connections
Store data permanently
Display information to users
66
What is virtual memory?
A backup for RAM
Using secondary memory as primary memory
Extra RAM installed in a computer
A type of fast storage
67
What occurs in the 'Decode' stage of the machine instruction cycle?
The CPU retrieves the instruction from RAM
The CPU executes the instruction
The instruction is interpreted and required data is fetched
The result is stored in memory
68
Where is L1 cache located?
Between RAM and the processor
In secondary storage
Inside the CPU itself
On the motherboard
69
How many bits are in one byte?
2
8
16
4
70
What type of memory is directly accessible by the CPU?
Cloud storage
Virtual memory
Primary memory
Secondary memory
71
What is a key difference between primary and secondary memory?
Primary memory is faster but smaller in capacity
Secondary memory is directly accessed by the CPU
Secondary memory is faster than primary memory
Primary memory is non-volatile, secondary is volatile
72
How many inputs do most logic gates have?
4
1
3
2
73
What is the purpose of a logic diagram?
To store electrical charge
To create complex truth tables
To replace programming functions
To visualize Boolean expressions in circuit form
74
Which of the following is an example of secondary memory?
Hard Drive
Register
CPU Cache
RAM
75
What is a key feature of graphical user interfaces (GUIs)?
Includes icons, menus, and toolbars
Requires programming knowledge to use
Uses only text-based commands
Has no visual elements
76
Why is secondary memory important?
It provides persistent storage
It clears unused data automatically
It speeds up CPU processing
It replaces RAM
77
Which characteristic defines primary memory?
It is directly accessible by the CPU
It is slower than secondary memory
It has unlimited capacity
It is non-volatile
78
How many different values can be represented using an 8-bit register in two’s complement?
128
512
256
1024
79
What does a NAND operator output when both inputs are 1?
Depends on voltage
1
Undefined
0
80
Which digits are included in hexadecimal representation?
0 to 9 only
0 to 15
A to Z
0 to 9 and A to F
81
In a simple electrical circuit, what does an open switch represent in binary?
-1
1
2
0
82
Which of these is NOT an example of secondary memory?
RAM
Hard drive
USB Flash drive
DVD-RW
83
What is the primary function of the Arithmetic Logic Unit (ALU)?
Retrieve instructions from memory
Control data flow in the CPU
Perform arithmetic and logical operations
Store frequently accessed data
84
How does virtual memory work?
It swaps programs between primary and secondary memory
It deletes unused programs
It compresses RAM data
It expands the physical RAM
85
What is the difference between DRAM and SRAM?
DRAM is faster and more expensive than SRAM
Both types have equal speed and cost
DRAM is a type of non-volatile memory
SRAM is faster and more expensive than DRAM
86
Which register holds the data being transferred to or from the RAM?
ALU
MAR
MDR
CU
87
What is the primary function of the CPU?
Run only graphical applications
Generate electricity for the computer
Process data by following instructions
Store large amounts of data
88
How is data stored in a computer system?
In hexadecimal code only
As direct text and numbers
In sequences of binary digits (1s and 0s)
In decimal format
89
How many inputs does a NOT Boolean operator have?
3
4
2
1
90
How many distinct colors can be represented in a six-digit hexadecimal RGB system?
16,777,216
256
65,536
4,096
91
What type of memory is used for executing programs and storing temporary data?
HDD
RAM
Cache
ROM
92
What is the primary characteristic of primary memory?
Slower than secondary memory
Directly accessible by CPU
Non-volatile
Stores data permanently
93
What component of the CPU is responsible for retrieving and executing instructions?
Control Unit (CU)
Memory Address Register (MAR)
Arithmetic Logic Unit (ALU)
Memory Data Register (MDR)
94
Which type of memory is volatile?
ROM
BIOS
Cache
RAM

IBDP Computer Science T2: Computer Organization Flashcards | StudBud