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WorksheetsInformatics Challenge for Grade 7
Total questions: 15
Worksheet time: 8mins
What is a data structure?
A data structure is a type of computer program.
A data structure is a method for writing code.
A data structure is a specialized format for organizing, processing, and storing data.
A data structure is a hardware component for data storage.
Name two types of data structures.
Trees, Graphs
Stacks, Queues
Hash Tables, Sets
Arrays, Linked Lists
What is the purpose of a linked list?
To ensure data is always sorted in order
To store data in a fixed-size array
The purpose of a linked list is to provide a dynamic data structure for efficient insertion and deletion of elements.
To provide a static data structure for fast access
Explain the difference between a stack and a queue.
A stack allows random access, while a queue does not.
Both stack and queue use LIFO.
A stack uses FIFO, while a queue uses LIFO.
A stack uses LIFO, while a queue uses FIFO.
What is the function of a router in a computer network?
To provide internet access to devices.
To encrypt data for secure transmission.
To store data packets for later use.
The function of a router in a computer network is to direct data packets between different networks.
Define the term 'IP address'.
A type of software used for network security.
A protocol for sending emails over the internet.
A physical device that connects to the internet.
An IP address is a unique numerical label assigned to each device on a network that uses the Internet Protocol for communication.
What is the difference between LAN and WAN?
LAN is a type of WAN.
WAN is used for local connections only.
LAN and WAN are the same type of network.
LAN is for local connections; WAN is for long-distance connections.
What does cybersecurity aim to protect?
User interface design
Physical security measures
Publicly available data
Sensitive information, systems, and networks.
Name one common type of malware.
Spyware
Trojan
Virus
Worm
What is encryption in cybersecurity?
A method to delete sensitive data permanently.
Encryption in cybersecurity is the process of converting information into a secure format that can only be read by someone who has the correct decryption key.
A way to compress files for faster transfer.
A technique to create backups of data.
What is the role of an operating system?
To manage only software resources
The role of an operating system is to manage hardware and software resources and provide a user interface.
To run applications without user input
To provide internet connectivity
Name two popular operating systems.
Linux
Android
iOS
Windows, macOS
What is a process in the context of operating systems?
A process is a type of hardware component.
A process is a static file stored on disk.
A process is a user interface element.
A process is an instance of a program in execution, managed by the operating system.
Explain what virtual memory is.
Virtual memory is a type of physical RAM.
Virtual memory is a method to increase the speed of the processor.
Virtual memory is a memory management technique that uses disk space to extend the available memory beyond the physical RAM.
Virtual memory is a technique that only uses CPU cache.
What is the purpose of a firewall?
To monitor employee productivity on the network.
To provide a backup for lost data.
To enhance internet speed by caching data.
The purpose of a firewall is to protect networks by controlling traffic and preventing unauthorized access.
